6 Inch M-Seal Model Blowers Stokes

 

M -SEA L BLO BLOWE WER R INSTRUCTIONS

6 INCH M -SEA L M ODEL BLOW B LOWERS ERS BLOWE RS SERIAL SERIA L NO. NO.

Copyright © 2000 All Rights Reserved Revision 1.3 8/01 STOKES V AC UUM INC., 55 5500 00 TABOR ROAD, PHILADELP HIA, PA . 191 19120 20 USA 215-831215-831-5400 5400 FAX 215-831215-831-5420 5420 http://www.stokesvacuum.com

 

 

 TO YOU, OUR VALUABLE CUSTOMER, YOUR COMPLETE COMP LETE SATISFAC SATISFACTION SATISFACT SATISFACTION TION ION IS OUR GOAL. GOAL. USE ST STOKES OKES GENUINE OEM PARTS, PREVENTIV PREVENTIVE E M AINTENANCE AINTENANCE AND OIL REQUIREM ENTS TO ASSURE YOUR SATISFACTION AND WARRANTY.

SERVICE ADVICE BY PHONE.. J U ST PHONE CALL 1-800-537-1913.

GENUINE STOKES OEM PARTS SHIPPED FAST. 90% WITHIN 24 HOURS. PA RTS HOTLINE HOTLINE CALL 1-800-445-3411.

VACUUM PUMP MAINTENANCE  TRA INI NG A T Y OU R SITE OR OURS.

DETAILED MAINTENANCE MANUALS

STOKES AFTERMARKET CUSTOMER SERVICE PREVENTIVE MAINTENANCE PLANS AND SERVICE CONTRACTS

FACTORY REPAIR & REBUILD SERVICE (5 CENTERS IN THE U.S.)

OPERATING INSTRUCTION MANUALS

ON SITE FIELD SERVICE BY FACTORY TRAINED EXPERTS

USE YOUR INSTRUCTION MANUAL.  YOU WILL FIND FIND A PREVEN PREVENTI PREVENTIV PREVENTIVE TIVE E MAINTENANCE M AINTENANCE CHECKLIST, CHECKLIST, THE  TYPE OF OF LUBRICANTS LUBRICANTS TO BE USED, A RECOMM ENDED SPARE PARTS LIST, LIST, ACCESSOR ACCESSORIES IES FOR OUR VACUUM VAC UUM PUM PS AND BLOWER AND OTHER HELPFUL INFORMATION. INFORM ATION.

STOKES VACUUM INC. HAS BEEN A WORLD RENOWNED M ANUFACTURER STOKES ANUFACTURER OF HIGH QUALITY VACUUM VAC UUM EQUIPM EQUIPM ENT FOR OVER 100 10 100 0 YEARS.

STOKES VA CUUM INC., 5500 5500 TABOR ROAD, PHILADELPHIA, PA . 19 19120 120 USA 215215-831 831--5400 -5400 5400 FAX 215 215---831 831831 --5420 5420 http://www.stokesvacuum.com

 

 

For equipment equipment covered spe speci ci fi cally cally o orr indi rectly in this ins truc tion manua manual, l, it is important that that al alll pe pers rs onnel observe s afety precautions to mini mize the chances of injur y. A mong the ma many ny consi dera derations tions , the foll follow ow ing should pa parti rti cularly cularly be be noted noted:: ü

ü

Pump c asi ng and a ass ss ociate ociated d piping or accessori es may be become come hot en enoug oug h to cause major major s k in burns on conta contact. ct. Internal and external rotating pa parts rts of the booster and drivi ng equipme equipment nt can  p  prr o du c e s er i o u s ph y s i c al i n j u r i es . D o n o t r eac h i n t o an anyy o pe pen ni ng i n the b bo o o s t er w hile it is opera operating ting , or w hile subject to acc identa identall starting . C over e external xternal moving pa parts rts w ith ad adequa equate te g ua uards rds .

ü

D isc onne onnect ct a all ll power sourc es be before fore doing any w ork , a and nd DO N OT bypa bypass ss or render inoperative inoperative any safety or protective devices .

ü

If booster is ope operate rated d wi th piping disc onnected onnected,, pl pla ace a str ong coarse scr ee een n over the inlet inlet a and nd disc ha harg rg e.

ü

 S t ay c le lear ar o f o pe pen n i n le lett pi pi n g (s u c t i o n ar ea) an and d o pe pen n di s c h ar g e blas b las t .

ü

 S t ay c le lear ar o f t h e b blas las t f r o m t h e p prr es s u r e r eli el i ef v alv es an and d t h e s u c t i o n ar ea o f vacuum r el elief ief val valves. ves.

ü

Us e p proper roper care and g ood procedure in ha handl ndling ing , lif lif ting , ins ta tall lling ing , ope operating rating and mainta ma intaining ining the eq equipme uipment. nt. D o not use the moto motorr for lifting .

ü

Impelller casing and g ea Impe earr housi ng pressure must not exceed 25 psi (172 k pa pa))  g au augg e. D o n o t pr es s u r i z e v en t ed c avi av i t i es f r o m an ex t er n al s o u r c e, n o r r es t r i c t the vents.

ü

ü

When add adding ing to or dra draw w ing oil from or othe otherw rw is e servicing eq equipme uipment nt w hich has been bee n pumping toxi c, f lammab lammable le,, explosive or other haz haza ardous subs tances, observe appropriate appropriate preca precautions utions to a avoid void s erious personal injur y. D O NOT exceed 80 psig ma maximum ximum in the motor cool cooling ing ja jack ck et. A llo low w w ater to  f low lo w f o r 1 5 m i n u t es m i n i m u m af t er s h u t do w n o f bl blo o w er t o c o o l d do ow n the m otor w inding s. D O NOT do any work or ma maintena intenance nce w ith wate waterr on on..

ü

C ool down booster before do doing ing any w ork or mainte maintena nance. nce.

ü

Br ea eakk va vacuum cuum i nside boo booster ster before do doing ing any w ork or mainte maintena nance. nce.

 

 

VA CUU M BOOSTE BOOSTER R IS IS SHIPP ED WITH WITH OIL OIL IN SEPA RATE CONTAINERS. BEFORE BEFOR E OPERA TING, PU T THE REQUIRE REQUIRED D A M OUN T OF OIL OIL INTO THE TWO OIL RESERVIORS RESERVIORS P ER INS TRUC TIONS U NDER SECTION 5.5 LUBRICATION. DO NOT FI FILL LL OIL OIL RESERVOIR RESERVOIRS S U NTIL VA CU UM BOOSTER BOOSTER IS IS M OUNTED IN IN ITS OPERA OPERA TING L LOCA OCA TION. TION.  

VA CUU M BOOSTE BOOSTER R IS IS S HIPP ED WITH WITH HEA T TRAN SFER SFER FLUID FL UID IN IN SEP A RATE CONTA INERS. INERS. BEFOR BEF ORE E OPERA TING, PU T THE THE REQUIR REQUIRED ED A M OUN T OF HEA HEA T  TRA  T RA N S FER FE R FL F L U ID IN T O T HE M OTOR OT OR FIL FI L L P ORT OR T P ER INSTRUC TIONS U NDER SECTION 5.4 5.4 HEA HE A T TRA NS FER FER FLUID. FLUID. DO NOT FILL FILL M OTOR OTOR UNTIL VA CUU M BOOSTE BOOSTER R IS IS M OUNTED IN IN ITS OPER OPERA A TING L LOCA OCA TION. TION.  

 

 

ü

DISCONNECT P OWER OWER B BEF EFORE ORE W WORKING ORKING ON P UM P OR MOTOR.

ü

GROUND M OTOR BEFOR BEFORE E CONNECTIN G TO ELE ELECTRICA CTRICA L P OWER. OWER.

ü

FAILURE TO TO GR GROUND OUND M OTO OTOR R CA N CA USE SEVERE OR FA FA TA L ELECTRI ELE CTRICA CA L SHO SHOCK CK HARA RD.

ü

SUP PLY VOLTAGE MUS T BE BE WITHIN ITHIN 10% 10% OF NA M EPLA TE VOLTA GE. INCORR INCORRECT ECT VOLTA GE CA N CA US E FIRE FIRE OR SERIOUS SERIOUS DA M A GE TO M OTO OTOR R A ND VOIDS VOIDS W WA A RR RRA A NTY . IF IN DOUB DOUBT T CONSULT STOKES STOKES VA CUUM INC.

 

Safety Precautions DON’T Run the machine unless all all GUA RDS are in position  The  Th e OSH OSHA A req equ uires ires manufa fact ctu urer ers s to fit fit guards onand all exposed rotating couplings belt drives, etc...shafts, It is glands, incumbent upon the opera operatorto torto ensure ens ure that these are in position before the machine is operated.

DO Wear suitable HEARING PROTECTION when work ing in the vicinity vicinity of noisy machinery.    The noise  The oise lev levels els e em mitte itted d by rot ota ary machin chiner ery y may vary depending on rotational speed, application, and environment, and on certain installations these noise levels can be sufficiently high to cause hearing damage if exposure is prolonged. On such installations, correct hearing protection must always be worn if working in the immediate vicinity.  vicinity.  DO NOT A Attempt ttempt ttempt maintena mainte maintenan nance nce ce wo work rk or adjustments unl adjustments unless ess w ea earing ring suit able PROTECTIVE CLOTHING.   Rotary equipment may cause cause severe injuries if incorrect clothing is worn when maintenance work is attempted if machines are in operation.

 Temp  T  Te emperat mperat erat ur e

Casing and associated piping and accessories may ma y become hot enough to c cause ause major skin burns on contact.

 

GENERAL It is important that plant operators are made aware of the responsibilities incumbent upon them to take all necessary precautions to ensure their health and safety, and also that plant authorities implement the procedures necessary towards this end, i.e. by providing relevant protective clothing and devices, and by bringing to the attention of the operators the official safety recommendations. DON DON'T 'T A ttempt ttempt any any maintenance maintena aintenance nce w work ork unt until il all electrical ele electric ctric al gear gear has has been been isolated. Isolate all electrical supplies before removing any guards, covers or accessories from any rotating machinery installation. Before re-connecting the electrical supply ensure that all guards, covers and access accessories ories are correctly replaced. DO Ensure that maintenance maintenance work on machine handling TOX IC materials is carried out in a wellwell --ventilated ventilated ventilated atmosphere w when hen toxic fumes have been been purged. A lso o observe bserv bserve e all all necessary neces necessa sary ry FIRE precautions. precautions. On installations involving toxic materials or vapors, operators should ensure that they are familiar with the regulations relating to contact with these materials and vapors, and also the correct procedures in case of fire. DO Ensure that that all a all ll RELIEF RELIEF VA VALVES LVES and and other SA SAFET FETY  Y D DEVICES EV IC ES are are k kept ept operative and are tested regularly. Rotating machinery installations in the Rotary Compressor, Liquid Ring Pump and Rotary Lobe category should be equipped with standard safety devices to prevent the units being operated outside their design range. These safety devices take therelief, form high of spring or weight va valves lves ffor or press pressure, ure, s spring pring loaded valve valve only for for vacuum pressure, high loaded va vacuum cuumrelief and high temperature switches, low water flow and low oil level switches etc... and normal installations can include individua individuall or multiple combinations of any or a all ll of them. These w would ould normally be supplied pre-set from multiple combinations of any or all of them. They would normally be supplied pre-set from the factory, or they would be finally set, on site, during commissioning. commissio ning. Unauthorized a adjustment djustment of any of these safety devices can lead to a potentially dangerous dangerous operating operating condition. condition. DO NOT LEAVE ELECTRICAL ELECTRICAL GEA R LIVE AND U NA TTENDED WITH WITHOUT OUT A SUITA BLE WARNING WA WA RNING NOTICE. NOTICE. Distinctive warning notices must be provided for posting in a conspicuous position to any piece of electrical equipment or machinery on which maintenance is being carried out, and which, for any reason whatsoever, is liable to be left unattended while in a live condition. OTHERS Stay clear of open inlet piping of pressure blowers and the open discharge blast from a vacuum blower. Place a strong coarse screen over over on an an open inlet piping. Do not use an air blow blower er on explosive or hazardous gases, unless the system is designed for the application.

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S  T A B L E O F C O N T E N T S 1. 1.0 0  GENERAL 1.1  1.2 

PRINCIPLE OF OPERATION   SAFETY PRECAUTIONS  

2. 2.0 0  BLOWER INFORMATION

1-10 

1-11  1-12  2-1 

2.1  2.2 

BLOWER MODELS  BELT DRIVE BLOWERS  

2-1  2-1 

2.3 2.4   2.5  2.6  2.7 

IRECT DRIVE BLOWERS   D I NTEGRAL BYPASS  PROCESS ISOLATION  CANNED MOTORS  OXYGEN SERVICE 

2-1 2-2   2-2  2-2  2-3 

3. 3.0 0  INSTALLATION

3-1 

3.1  LOCATING & MOUNTING  3.2  VACUUM & EXHAUST PIPING  3.2.1  Vacuum Inlet Piping 3.2.2  Types of Vacuum Piping 3.2.3   Accessory Port Piping 3.2.4   Exhaust Piping 3.2.5  Oxygen Service Piping 3.3  BELT DRIVE BLOWERS  

3-1  3-1  3-1  3-2  3-2  3-2  3-2  3-3 

   Belt Section IRECT DRIVE BLOWERS   3.4   D 3.5  WATER SYSTEM  3.5.1   Process Isolation Blowers 3.5.2  Can Motor Blowers 3.6  LUBRICATION  3.6.1 Hydrocarbon Oils 3.6.2 Oxygen Service Lubrication 3.7  HEAT TRANSFER FLUID (CAN MOTORS) 3.8  ELECTRICAL SYSTEMS & R OTATION OTATION  3.8.1  Standard Motor Wiring 3.8.2  Can Motor Wiring 3.9  MOVING, STORAGE AND SHIPPING  3.9.1 Moving  M-Seal Blowers Canned Motor Blowers 3.9.2  Storage 3.9.3  Shipping

3-3   3-4 3-5  3-5  3-5  3-5  3-5  3-6   3-7  3-7  3-7   3-8  3-9  3-9  3-9  3-9  3-9  3-9 

4. 4.0 0  OPERATION 4.1  4.2  4.3 

PRE-START CHECK   STARTUP   SHUTDOWN  

5. 5.0 0  MAINTENANCE AND REPAIRS 5.1  5.2  5.3 

GENERAL  MAINTENANCE SCHEDULE  TROUBLE SHOOTING 

4-1 

4-1  4-1  4-1  5-1 

5-1  5-1  5-2 

PA GE 1-9 1-9 

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

1.0 General The Stokes Vacuum M Seal 6 inch blowers are standard with keyless timing, roller bearings, mechanical vacuum seal and large oil level sight glasses. The Stokes Vacuum hermetically sealed (canned (canned motor) blowers also incorporate these features without a dynamic mechanical mechanical seal. These features facilitate maintenance and improve reliability. Every blower is tested at the factory to stringent performance req requirements. uirements.

The blowers are single stage, positive displacement precision engineered machines. The vacuum blowers must be  backed with a suitable backing pump or roughing pump. The vacuum blowers are not intended for stand-a stand-alone lone operation. The impellers counter-rotate in synchronous mesh in the body housing. Precision helical gears are use used d for quiet operation and maintain proper impeller timing. The blowers are not intended for duty as positive pressure  blowers. Stokes Vacuum recommends installation, operation and maintenance guidelines described further in this manual. Years of trouble free operation will result from proper care and operation. operation. The blower nameplate contains mod model, el, lot and serial number information required when inquiring for advice, parts or service from the factory. Blowers are not shipped with lubrication in the oil reservoirs reservoirs but is provided in a separate ccontainer. ontainer. Special service  blowers (oxygen service) are specially prepared free of hydrocarbons from the factory and typically not supplied with the initial charge of lubricant. Canned motor blowers require heat transfer fl fluid uid for cooling the motor windings. The heat transfer fluid is provided in a separate container. Read the appropriate manual instructions BEFORE operating the equipment. Follow all safety precautions explicit or implied by this manual. manual. Any unauthorized modification or failure to follow the installation, operation requirements or procedures are the sole responsibility of the client and shall cancel any guarantees and warranties. Stokes Vacuum’s liability shall not exceed the original price of the vacuum blower.

PA GE 1-10 1-10

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

1.1 P rinci ri nciple ple o off Operation The basic operation of the two lobe vacuum blower is illustrated below. The bypass valve ope operation ration shown is only  present on applicable bypass models.

Position 1 - Gas enters from the left side into the  blower body. The top impeller rotates clock wise

and the lower impeller rotates counter clockwise.

INLET

  Position 2 - Gas is trapped between the lower impeller and the blower blower body wall. The upper impeller rotates with precise timing to maintain  proper clearance limiting gas back flow.

INLET

  Position 3 – The lower impeller discharges the trapped gas to the discharge port as it continues to rotate. The blower discharges four volumes per one rotation of the drive shaft.

INLET

  Bypass Operation –The optional integral bypass valve limits the compression acros acrosss the blower. If the compression creates an excessive pressure differential, the bypass valve opens allowing compressed gas to flow back to the inlet side of the  blower.

GAS BACK FLOW  

PA GE 1-11 1-11

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

1.2 S afet fetyy P reca recaut utions ions For equipment covered specifically or indirectly in this instruction manual, it is required that all personnel observe appropriate safety precautions precautions to prevent the chance of of injury. The following precautions should particularly be followed: 1.

Disconnect and lock lockout out all power source sourcess before doing any work or maintenance.

2.

Pump casing and associated piping and accessories accessories may become become hot enough enough to cause major skin burns on contact. Allow sufficient time for the equipment to cool before doing any work or maintenance.

3.

Internal and external rotating parts of the blower and driving equipment can produce serious physical injuries. Do not reach into any opening opening in the blower while it is operating operating or subject to accidental starting. Cover external moving parts with adequate guards.

4.

NEVER bypas bypasss or render inoperative any safety safety or protective devices devices.. The blower should be isolated from vacuum system using appropriate lockout and tag out procedures.

5.

Personnel mu must st stay clear of open inlet (suction area) and discharge discharge piping.

6.

Stay clear of blast from pressure relief and suction areas of vacuum break valves.

7.

Use prope properr care and handling handling procedures procedures when lifting, installing, operating and maintaining the equipment. DO  NOT use the motor for lifting on direct drive or can motor blowers.

8.

Blower exceed d 25 psi (172 kPa) gauge. Do not pressurize v vented ented cavities or restrict any vent. body pressure must not excee

9.

Break ssystem ystem va vacuum cuum be before fore doing any w work ork or maintenance on the blower.

11. Ensure proper safety and handling procedures are followed when performing maintenance on equipment with toxic or hazardous process materials. 12. Regularly check safety devices and relief valves to verify proper performance.

PA GE 1-12 1-12

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

2.0 Blower Information The Stokes Vacuum M Seal blower 6 inch series is available in hori horizontal zontal and vertical configurations. The basic M Seal models are based on Stokes Vacuum 607, 615 and 622 blowers. The M Seal blowers are typically belt driven. They are also available in direct drive and canned motor versions. The M Seal blower gear center distance is 6 inches. The blowers have three basic body lengths of 7, 15 and 22 inches. The blowers have normal operation limits from 800 to 3600 RPM. The volumetric pumping rates increases increases with body length and rotational speed. The following application data is used used to determine operational limits for the blower. The limits are based on compression and pumping speeds for the specific application. application. The following indicate performance limits not to be be exceeded. The following limits, backing pump speed and gas loads determine cut in pressure and continuous continuous operation pressure limits. Blower Body Size

607 615 615 By Pass 622

Max Pressure Differential (TORR) 380 380  N/A

Maximum Temperature Rise (° (°F)

Maximum Discharge Temperature (° (°F)

275 275 275

375 375 375

250

250

350

Stokes Vacuum can recommend cut in and operation limits when supplied with chamber size, backing pump and gas load information. The first limit reached during operation is the limiting factor. Control devices such as timers,  pressure, temperature, and flow switches may be required to properly control operation of the blower.

 2.1 B lower Models Several variations of the base design design blowers are available. The product code and model information determines the exact configuration of each blower. blower. Blowers are available in horizontal and vertical connections. The 615 blowers are available with an optional integral bypass valve allowing operation from atmosphere to shorten  pump down time. Process isolation blowers have 4 mechanical mechanical seals that isolate the pumping chamber chamber from the mechanical components. components. Blowers can be prepared free of of hydrocarbons for oxygen service. service. The Stokes Vacuum canned motor blowers feature a hermetically sealed motor to eliminate dynamic dynamic shaft seals. Variable frequency drives are available for Stokes Blowers. Variable frequency drives are also referred to as va variable riable speed drives, inverters and sensorless vector drives. Consult your Stokes Vac Vacuum uum representative for application information.

 2.2 B elt D ri ve B lower lowerss The M Seal blowers have been design to withstand loading from standard V-belts. The blower is design for standard operation from 800 to 3600 RPM. The loads induced into the drive shaft increase increase with horsepower. Stokes specifies a minimum pulley diameter for the blower shaft based on motor power. Never use a pulley with a smalle smallerr diameter than specified. specified. See installation 3.3 for specific details on pulley diameters. Stokes Vacuum can provide  blowers and motors sized for most applications.

 2.3 D ir ect Dr i ve B lower lowerss The M Seal blowers are available with direct drive drive motors. Direct drive eliminates tension loads associated with  belt blowers are designed for easy conversion from to direct drive. The direct drive M Sealdrives. blower Stokes consistsMofSeal a standard stand ard blower, a coupling, a motor support, andbelt a C-face motor. Optional variable frequency drives are available from Stokes to improve performance performance on blowers without bypass valves. Consult your

PA GE 2-1 2-1 

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S Stokes representative for application information. Various voltages, frequencies, speeds speeds and horsepower motors are are available. Large horsepower motors (30 HP+) can not be supported by C-face motor support alone.

 2.4 In Integ teg ral B Bypas ypas s The 615 M Seal blower has an optional bypass valve for operation from atmosphere. The bypass regulates the amount of compression compression across the blower body. The limiting speed for the bypass blower blower is 3600 RPM. The  bypass valve regulates the pressure differential across the blower to 60 Torr. Maximum discharge temperature and maximum temperature rise are the same as the standard standard 615 blowers. Under some operating conditions, it is not  possible to operate the bypass blowers continuously due to heat generated generated from gas compression. These conditions are dependent on chamber size and backing backing pump speeds. Consult factory if pump down excee exceeds ds 45 minutes. See section 1.1 for a bypass blower cross section view.

 2.5 P ro roces ces s Is olat olatio ion n Stokes Vacuum process isolation blowers have 5 mechanical seals that isolate the pumping chamber from the  bearing housings. These blowers are used on applications with dirty process gasses gasses that tend to contaminate oil and aggravate mechanical wear. The process isolation blowers have water-cooled bearing housings.

 2.6 C anned Motors The canned motor derives its name from the thin walled stainless steel "can" that isolates the shaft-mounted rotor rot or from the stator and ambient atmosphere. The hermetically sealed can provides a vacuum vacuum tight drive without the use of a dynamic shaft seal. These blowers greatly reduce down time associated with dynamic shaft seals. Review sections 3.5.2, 3.6, 3.7 and 3.8.2 3.8.2 thoroughly before operating any can canned ned motor blower. Stokes requires all can motors blowers be protected with the integral winding over-temperature switch and a water flow switch. The safety devices must must interrupt blower operation if heat transfer fluid or water-cooling is lost. These devices must be incorporated into the motor control circuitry. Water flow switches are available from Stokes Stokes as an accessory. accessory.  Never operate can motor blower without cooling water and heat transfer fluid.  Failure to install a proper water flow switch, heat transfer fluid and motor winding over-temperature switch and incorporate the switches into the motor control circuitry shall cancel any guarantees and warranties. Incorporation of the water flow switch is the sole responsibility of the customer. Stokes Vacuum shall not be held liable for the failure of the motor or pump due to improper installation or maintenance performed by the customer. Canned Motors Standard Model Canned Blowers

20 HP – 3450 RPM 900-615-CV2 900-615-CH2

(cfm) 2600 2600

900-61B-CV2 900-61B-CH2 900-622-CV2 900-622-CH2 208V- 60 Cont. 80 Inter. 230V- 54 Cont. 74 Inter. 460V- 27 Cont. 37 Inter. 3φ /60 Hz. 3450 RPM 16 Horse Power 190V- Cont. Inter. 380V- 26 Cont. Inter. 3φ /50 Hz. 2850 RPM 115 VAC / 6 Amp NC  Normally Closed 2 - 3 GPM Minimum

2600 2600 3900 3900

Motor Current (Amps) Cont. – Continuous Duty Inter. – Intermittent Duty Line Frequency Motor Current (Amps) Cont. – Continuous Duty Inter. – Intermittent Duty Line Frequency Temperature Switch Set point 350° 350°F Cooling Water (85° (85°F)

900-615-CH1 1300 900-615-CV1 1300 900-61B-CV1 1300 900-61B-CH1 1300 208V- 33 Cont. 48 Inter. 230V- 30 Cont. 44 Inter. 460V- 15 Cont. 22 Inter. 3φ /60 Hz. 1750 RPM 8 Horse Power 190V- Cont. Inter. 380V- 15 Cont. Inter. 3φ /50 Hz. 1450 RPM 115 VAC / 6 Amp  Normally Closed 2 – 3 GPM Minimum

Heat Transfer Fluid

4.3 Liters GE SF 97-50

4.1 Liters GE SF 97-50

CFM is for 60 Hz.

10 HP - 1750 RPM 900-607-CH1 900-607-CV1

(cfm) 612 612

PAGE 2-2

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S Some applications may require horsepower exceeding exceeding the nameplate continuous duty rating. It is possible to exceed the continuous duty rating for short periods of time. Consult Stokes Vacuum on applications exceeding continuous duty amperage limits. It may be necessary to use overloads with ampe amperage rage ratings greater than specified for continuous duty to avoid motor cutouts. Under no circumstances should overloads be sized larger than those specified for intermittent duty. Consult Stokes Vacuum for application of variable frequency drives on canned canned motor blowers. Operation of the can motor other than described in this manual manual or without first consulting Stokes Vacuum may void warranty.

 2.7 Ox yg en S Serv erv i ce Stokes Vacuum can prepare blowers for hazardous gas service. The blowers are prepared free of hydrocarbons. hydrocarbons. The blowers use inert lubrication that does not react with oxygen. Special care must be used in operating oxyge oxygen n service blowers. Stokes usually paints oxygen service equipment blue and does not usually supply an initial charge of lubrication. Blower color does not guarantee service type. Always check check the blower nameplate to verify service type. Consult Stokes Vacuum for proper installation and use of oxygen service blowers. Vacuum equipment intended for oxygen-service requires special preparation and handling. Intrusion of dirt, di rt, hydrocarbon oils and greases must be prevented. Always use inert or other safe gasses to purge and break vacuum. Oxygen service equipment requires special lubricants. Only Fomblin® Y-25/6 is to be used.

WARNING-Substitute lubricants cannot be used. used. Substitutes or hydrocarbon conta contamination mination can result in an explosion. Stokes recommends that any major repairs needed for the oxygen service service equipment be done at the factory. Minor repairs can be made in the field. Because of the possibility of a dangerous reaction to dirt and chemical chemical compositions in an oxygen rich environment, absolute cleanliness of parts, tools, wipers and assemblers' hands and clothes is mandatory.

PAGE 2-3

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

3.0 Installation On receipt of unit, check for any damage that may have occurred occurred during shipping. Report any damaged, missing or incorrect parts immediately and not later than 30 days after receiving the equipment. Follow the guidelines outlined  below for proper installation. Consult your local Stokes Representative if you have any questions regarding regarding the installation or operation instructions. Disconnect all power sources before performing any work. During installation protective coverings should be left in  place to prevent rusting and reduce the chance of foreign material entering the equipment. Review safety safety precautions in section 1.2 before continuing.

 3.1 L ocat oc atii ng & Mou Mountin ntingg The vacuum blower should be mounted on a smooth, flat level surface. The degree of variation in level should not exceed 1/16" per horizontal foot (1 mm per per 20 cm) in any direction. Check to see that all four feet contact the mounting base. Do not distort the blower body. Mount blower in the final operating location location before adding fluids. Verify that no foreign material is present in the vacuum piping or impeller cavities. The blower interior is protected for shipment by small bags of moisture absorbent material attached to the flange covers. Check for free rotation of the impellers. Stokes blowers are designed for optimal performance in clean environments with ambient temperatures of 50°F to 135°F (10-57°C). Use of these units in areas of higher temperatures will result in higher discharge temperatures and  possible over-temperature cutouts. Use of the units in dirty locations or where oil vapor is present can result in overheating of the motor, belt slippage or premature wear. Be sure tto o inspect and clean the equipment as necessary if used in a dirty environment. Locate the pump close to the equipment being evacuated. Place equipment so water, electrical and piping connections can be conveniently made. made. Provide adequate space and lift access for conv convenient enient servicing where  possible. The blowers weigh 450 to 1200 lbs. depending on the model. See Section 3.9.1 for specific model weight. Long piping runs from the chamber being evacuated to the blower should be avoided. The blowers are precision balanced devices. The blower must be mounted on a sufficiently rigid base and secured to the floor to reduce potential system vibration. Vacuum piping attached to the blower can vibrate excessively excessively if not properly supported or secured. Blower vibration usually results from insufficient support.

 3.2 V acuu acuum m & E x haus t P i pi ping ng All vacuum lines should be as short as possible and should should be no smaller than the blower inlet. When running a long line, the pipe size should be increased over the inlet diameter of the pump. The lines must be conductance checked to ensure the pumping speed of the system will not be decreased. Consult your local Stokes representative for help in sizing lines for long runs. A clean rag dampened with Loctite Safety Solvent may be used to clean the blower impellers i mpellers and flanges if they have accumulated dirt during installation or storage. The fore-line of the vacuum blower should have a valve to isolate the vacuum pumps from the chamber chamber or vacuum system. Clean surfaces are very important important in making a good vacuum seal. 3.2.1

Vacuum Inlet Piping

Be sure all vacuum piping is tight. Install a flexible connection between the blower inlet and vacuum piping to reduce vibration and prevent blower blower body distortions. Properly support the piping system to eliminate the potential for vibration. The blower body must not b bee used to support long runs of piping. A high vacuum full opening valve is recommended to facilitate start-up and for checking pump blank off pressure. This valve should isolate the vacuum vacuum pumps from the rest of the vacuum system. Installation of a vacuum pressure gauge is recommended to verify proper vacuum vacuum pump performance. Also a vacuum break valve shou should ld be installed in the blower inlet or fore line. A filter/silencer should be installed to keep foreign materials from entering the system.

PA GE 3-1 3-1 

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S Make sure the vacuum system and connecting lines are clean and free of weld splatter, dirt or grit.  Foreign matter (particulate) can cause serious damage and premature failure of internal pump parts. Stokes Vacuum recommends installation of a 16-mesh wire screen in front of the pump inlet connection. The screen must be removed after 20 hours of operation. Failure to remove the screen will allow it to deteriorate and can damage damage the  pumps mechanical components. components. Depending on blower size, backing pump capacity and chamber size, other devices such a interstage temperature t emperature switches, timers, vacuum pressure switches, etc. must be incorporated to protect the blower from thermal and mechanical overload.  3.2.2

A.

Types of Vacuum Piping

Standard w wrought rought pipes pipes with welded joints makes makes the best va vacuum cuum piping piping systems. systems.

B. Steel tubing with welded joints makes a lighter weight pipin piping g system and and facilitates handling and installation. C. Copper piping with soldered fittings and joints can be made vacuum tight and has the advantage of  providing a neat, clean installation. 3.2.3

Accessory Port Piping

Accessory connection ports are provided in the blower body. The ports may be used for vacuum breaks and vacuum vacuum gauging. Vacuum pressure gaug gauges es should be conne connected cted as follows: the 3/8" NPT pipe plug sho should uld be replaced with a vacuum ball valve and connected to an elevated elevated gauge. Use a short run of pipe to keep the valve a few inches away from the hot blower body. All threaded vacuum joints must be doped doped with a liquid thread sealant (Loctite 714 or or equivalent). Tape thread sealant will create small vacuum leaks and should not be used. A Stokes McLeod Gauge requires a flexible vacuum vacuum connection. Synthetic smooth bore tubing such as Tygon Tygon will  provide a good flexible vacuum connection. To prevent contaminates from entering the gauge, locate the McLeod gauge approximately 2 ft. (.5M) from the gauge port. 3.2.4

Exhaust Piping

The exhaust lines should be the size of the blower exhaust exhaust outlet. Exhaust gasses must be handled in ac accordance cordance with Local, State and Federal regulations. When mounting a horizontal blower to an oil sealed backing pump, mount the blower above the inlet to avoid potential oil collection in the blower body. Include ports to check system temperatures and pressures. 3.2.5

Oxygen Service Piping

Oxygen service blowers are free of hydrocarbons. hydrocarbons. Oil contamination from vacuum inlet and exhaust piping can can create hazardous conditions. Completely clean all hydrocarbons from all inlet and discharge piping, vacuum system and equipment exposed to system reactants at least three (3) times with Isotron 11 113. 3. Follow all appropriate appropriate safety protoco protocols. ls. Use (Fluroamatics) Oxy-8 paste on on all threaded pipe connections and fittings. Permatex, Loctite or Teflon paste is NOT  permissible. Lightly coat tools and hands with a light film of Fomblin or Krytox. No rust preventative should be used on any oxygen service booster booster parts. Clean bearings with Isotron 113 and lightly coat with Fomblin® or Krytox®. Ensure pump is properly filled fill ed with lubricant and all potential hazards have been properly addressed before starting any vacuum vacuum equipment. Always use inert or other ssafe afe gasses to purge and break vacuum. vacuum. Refer to Section 2.7 for further information.

PAGE 3-2

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

 3.3 B elt D ri ve B lower lowerss Alignment of pulleys and blower belt tension are very important. Follow the installation specifications and inspect the drive system periodically to avoid mechanical problems and unnecessary unnecessary repairs. The following size chart specifies the minimum permissible pulley diameters. Consult factory for motors exceeding 40 HP. Motor (HP) Minimum Pulley Diameter

15 HP or Less

Above 15 to 25 HP

Above 30 to 40 HP

5.2” PD

6.3” PD

7.0” PD

Pulley misalignment can damage damage the bearing, belts belts and seal(s). Pulley alignment does not not change from operation. The motor and blower driveshafts must be parallel to avoid uneven loading of belts. Check for free rotation of the  blower by hand before starting the blower. Never operate the blower without proper safety guarding installed.  New belts usually lose some tension during initial operation and should be rechecked rechecked during the first few days of operation. Always tension the belts according according to the specifications of the belt manufacturer. Excessive tension can induce unnecessary unnecessary loading on the b blower lower bearings and bending bending moments on the blower blower drive shaft. Extreme over tensioning may cause the shaft to break from fatigue. Belt drive blowers that have been packaged by Stokes Stokes come with the pulley and belt tension already set. Re-check the alignment and tension before initial operation using the following procedure. 1.

Shaft, hub and pulley components must be free of of lubricants, corrosion and protective coatings.

2.

Check pulley alignment with a straight edge or tight cord. The pulley faces sho should uld contact the straight edge at all four points. Misalignment of 1/8th inch per foot will significantly aggravate belt wear. If pulley alignment or removal is required, loosen motor hub set screws several turns. Remove one set screw completely. Install the set screw in ce center nter position and tighten to break locking bushing free. Reposition pulley and reinstall set screws in the original position in the locking bushing. Tighten evenly to specified torque. The locking bushing number is stamped on the inner hub face.

3.

Locking Bushing # 1310 1610 1615 2012 2517 2525

Torque (ft-lbs) 14.5 14.5 14.5 23 36 36

Locking Bushing # 3020 3030 3535 4040 4545 5050

Torque (ft-lbs) 67 67 83 141 204 260

4.

Belt span distance, belt deflection and a deflection force determine proper beltthtension. Determine the span distance between contact contact points on the pulleys. The deflection should be 1/64  per 1 inch of span. 5. Determine proper per belt force based on the smallest pulley diameter and belt type. Stokes sup supplied plied belt systems are usually a 3 groove “B” de design. sign. Check each belt belt for even loaded. Uneven load indicates pulley misalignment or non-parallel shafts. Smallest Pulley Diameter RPM Belt Force (lbs) Belt Section (Inches) Range  Normal New Belts (Force per Belt) 4.4-5.6 860-2500 5.3 7.9 B, BX 2501-4000 4.5 6.7 5.8-8.6 860-2500 6.3 9.4 2501-4000 6.0 8.9 3VX 4.12-6.90 1000-2500 4.9 7.3 2501-4000 4.4 6.6 7.1-10.9 500-1740 12.7 18.9 5V, 5VX

11.8-16.0

1741-3000 500-1740 1741-3000

11.2 15.5 14.6

16.7 23.4 21.8

PAGE 3-3

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S 6.

Ideal tension is the minimum tension to overcome peak loading. loading. Never exceed exceed 1.25 times the force spec specified ified above. Lock down tension adjustment mechanism. Turn pulleys over 3 times by hand. Chec Check k for free and easy rotation. Recheck tension before replacing replacing sa safety fety guards and operating the blower.

7. 8.

Replace all belts simultaneously when any one requires r equires changing. Check tension frequently during the first few days of operation. Never apply belt dressing. If customer supplied belt or pulleys pulleys are used, follow the manufacturers’ recommended installation procedures. procedures. Check belts and pulleys pulleys monthly.

 3.4

D i rec t D r iv e B Blowers lowers

Alignment of the drive coupling is very important. Misalignment or a worn out coupling spacer (spider) will damage the blower bearings and seal(s). Follow the installation specifications and inspect the drive system  periodically to avoid mechanical problems and avoid unnecessary unnecessary repairs. Never operate the blower without proper safety guarding installed. Direct drive blowers come with the motor coupling already set. Re-check the alignment before before initial operation. The following values are for L190 couplings. Consult factory for other sizes. sizes. 1. 2. 3.

Shaft, coup coupling ling and components must be free of lubricants, protective coatings an and d burrs. Slide one half-coupling onto each shaft. Check keys for a snug fit. Position the hubs on the sha shafts fts to achieve approximately 1.000 inch inch space between between the hub recesses for the  polymer spider. The hubs should be positioned on the shafts to achieve an equal amount amount of support for both coupling halves. Torque one half-coupling ½-13 set screw(s) to 45-50 ft-lbs. (61-68 N-M) when in its final  position.

1.000

ANGULAR ALIGNMENT MEASUREMENTS

 s traig ht edg edg e  4. 5. 6.

7.

8.

9.

 

Slide the free half-coupling back and and install the polymer spider. Reposition the free half-coupling to the proper spacing and torque set screw(s). If hub cannot be slid back, torque second half-coupling at the proper spacing. Separate the equipment and install the polymer spider. Bring coupling hubs ba back ck together with proper spacing spacing.. Check for pa parallel rallel alignment with a straight edge across across the two half couplings at several places around the coupling. Do not rotate the coupling. Measure the space unde underr the straight edge. The misalignment misalignment measurement must be less than than .015 inches. Reposition the shafts if the maximum misalignment misalignment is exceeded. Determine aangular ngular alignme alignment nt across the coup coupling. ling. The mea measurements surements should be taken from the surface where the couplings neck down from the spider diameter to the diameter with the set screw(s). Find the maximum and minimum values. The difference of these these two measurements measurements must be less than than .040 inches. Reposition the shafts if the maximum tolerance is exceeded. exceeded. Recheck parallel alignment if repositioning was required. Rotate ccoupling oupling after achieving proper alignment. alignment. The sshaft haft should rotate free and ea easy. sy. Never o operate perate a coupling above maximum permissible horsepower or RPM indicated (stamped) on coupling. Never operate an M seal blower above 3600 RPM. Install proper safety guards before operating.

Check coupling spider condition monthly.

PAGE 3-4

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

 3.5 3.5.1

W at ater er S ys tem Process Isolation Blowers

Cooling water must be provided to t o the process isolation blower bearing housings during operation. Water flow control valves should not be placed in the water outlet drain line. Water pressure in the water housings must never exceed 40 psi. A flow meter is recommended to reduce excess water consumption. consumption. The water flow should be divided equally to  both bearing housings. Cooling water should enter through the lower connections to avoid trapping air pockets pockets in the water-cooling passages. 3.5.2

Can Motor Blowers

Failure to install a water flow f low switch and incorporate the water flow switch into i nto the motor control circuitry shall cancel any Stokes guarantee and warranties. Incorporation of the water flow switch is i s the sole responsibility of the customer. Cooling water must be provided to the canned motor water-cooling water-cooling jacket during operation. Stokes Vacuum requires installation of a properly sized water flow switch to assure cooling water is supplied to the canned motor  blower. The flow switch (Stokes P/N 085-052-388: 1.5 GPM, 5A @ 120/240VAC 60 HZ) must be located after the water exits the motor water jacket and wired into the motor control circuitry to prevent operation without proper water flow. The flow switch is an accessory available available from Stokes Vacuum. A flow meter is recommended to reduce excess water consumption. Water flow control valves should not be placed in the water outlet drain line. Water pressure in the water jacket must never exceed 80 psi. Cooling water should be run through the motor water-jacket for a minimum of 15 minutes after stopping the motor to cool the stator windings. Cooling water must enter through the lower connection to avoid trapping an air pocket in the water-cooling jacket. See section 2.6 for flow requirements. Also see Section 3.7, Heat Transfer Transfer Fluid, before operating the canned motor blower. The canned motors mus mustt have heat transfer fluid in the motor windings to prevent failure. Never operate the unit with less than the specified amount of water flow or heat transfer fluid.

 3.6 L ubr ubrii catio cation n Do not operate the blower without verifying verifying lubrication has been added added.. Verify proper levels daily. Always be sure to use the proper lubricant and never add hydrocarbon oil to an oxygen service blower. Substitution of oil types not approved by Stokes Vacuum Inc. may void warranty. warranty. See section 5.0 for maintenance intervals. 3.6.1 Hydrocarbon Oils

Before operating, put the required amount of oil into the oil oil reservoirs. The oil levels should be at the center of the sight glass. Do not attempt to add lub lubricant ricant while the blower is running. Stop the blower and break break vacuum to fill or drain.

V-LUBE H

OUNCES

FILL POINT Horizontal DRIVE END BEARING 26 HOUSING GEAR HOUSING 41 All quantities are approximate.

MILLILITERS Vertical

Horizontal

Vertical

46

750

1350

95

1200

2800

PAGE 3-5

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S The Stokes Vacuum M Seal and Can Motor Blowers have two (2) oil reservoirs: Bearing housing, drive end. Gear bearing housing. Check the interface drawing in the M-Seal Blower Pa Parts rts Lists manual for the fill and drain locations. locations. Older blowers have an oil cup and require this third cavity to be filled. The blowers have a label on the gear cover indicating how many places require lubrication. With blower stopped and not under vacuum, fill both fill ports with V-Lube H until each sight glass is ½ full. See applicable interface drawing for location of ports. Do not overfill or permit the oil level to fall below the bottom bottom of the sight glass. If overfilled, oil may spill over into the blower body and can contaminate the vacuum vacuum system. On blowers with the M Seal, overfilling the drive end of the blower can create a squealing noise from the t he seal. Lower the oil level slightly to eliminate the noise.  The bearings in the drive end reservoir are splash lubricated from an oil slinger slinger that dips into the oil sump. The gears are lubricated by partial immersion in the oil sump. Splashing from the gears lubricates the bearings. When the blower is in operation, the oil level will fluctuate due to the pumping action of the gears and slinger. If viewing the oil level becomes difficult due to a dirty sight glass, remove the sight glass during an oil change and clean the viewing surface. Each time the fill or drain plugs are removed the O-rings O-r ings must be inspected for cuts or damage and replaced if necessary. The plug O-rings produce a vacuum seal. 3.6.2 Oxygen Service Lubrication

Do not operate the blower without verifying lubrication has been added. Quantities are the same as in section 3.6.1 for hydrocarbon oil. Add oxygen service lubricant into the reservoirs. The lubrication levels should be at the center of the sight glass. Never attempt to add lubricant while the blower is running. Stop the blower and shutdown the equipment. Lock out power and break vacuum to fill or drain. Oxygen service equipment requires special special lubricants. Only Fomblin® Y-25/6 is to be used. Do not substitute or mix lubricant types.

WARNING-Substitute lubricants cannot be used. used. Substitutes or hydrocarbon contamination contamination can result in an explosion. Stokes recommends that any major repairs needed for the oxygen oxygen service equipment be done at the factory. Minor repairs can be made in the field. Because of the possibility of a dangerous reaction to dirt and chemical compositions in an oxygen rich environment, absolute cleanliness of parts, tools, wipers and assemblers' hands and clothes is mandatory.

PAGE 3-6

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

 3.7 Heat Tr ans fer F luid ((C C an Motors Motor s ) Failure to install the proper amount of heat transfer fluid into the motor windings shall cancel any guarantees and warranties. Maintaining the proper amount of heat transfer fluid in the motor windings is the sole responsibility of the customer and not the responsibility of Stokes Vacuum. All 6 inch can motor models require heat transfer fluid. See Section 2.6 for heat transfer fluid quantities. quantities. Do not under-fill the heat transfer fluid. Do not substitute substitute other types of heat transfer fluids. The dielectric, temperature and flammability properties are critically important. Do not fill motor windings with gear lubrication. WATER OULET 1/2 NPT (3/8 npt stl hsg) HEAT TRANSFER FLUID ONLY!

 

WATER INLET 1/2 NPT (3/8 npt stl hsg)

Stokes vacuum supplies an initial charge of heat transfer fluid with the t he canned motor in a separate container(s) for filling at installation. Stokes heat transfer fluid is available available in 1-gallon containers (P/N 085-051-648). At room temperature the fluid should be just visible in the fill port. Temperature changes from peak operation or from cold cooling water can significantly raise and lower the level of the fluid. Operation of the ccan an motor at pe peak ak load will determine the proper amount of fluid. Thermal expansion may force heat transfer fluid out out of the top of the motor casing casing if slightly overfilled. A small amount of fluid force forced d out of the motor windings does not necessarily indicate an operating problem. Heat transfer fluid in the motor does not require changing but should be periodically checked to verify proper amount. With the motor winding hot from operation, the fluid should be visible through the fill plug and cover the motor windings. Also see Section 3.5.2, Can Motor Water System, System, before operating the canned motor blower. The canned motors must have cooling water to prevent failure. Never operate the unit with less than the specified amoun amountt of water flow or heat transfer fluid. 

 3.8 E lectri cal S Sys ys tems & R otat otatii on 3.8.1

Standard Motor Wiring

Electrical hookup of blower motors requires that the proper overloads, motor starter, control and safety devices be installed. Control devices may include temperature switches, water flow switches, pressure switches and other control devices. Failure to include the proper control devices can lead to serious injury, damage to the equipment and voids any Stokes warranty.

PAGE 3-7

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S A manual restart should be provided to prevent cycling in the event of an overload. Depending on blower size,  backing pump capacity and chamber chamber size, other devices such as interstage temperature sswitches, witches, timers or vacuum  pressure switches should be incorporated to protect the blower from thermal and mechanical overload. See section 1.1 to determine proper rotation direction. Because of the wide range of applications for the blowers and the various vacuum systems and configurations, specific sizes or models for the t he protective equipment, safety devices and control devices cannot be given here. Information used in the selection of these devices can be found in sections 2.0 Blower IInformation nformation and 2.6 Canned Motors. Contact Stokes Vacuum for recommendations on protection and safety devices regarding your specific application. 3.8.2

Can Motor Wiring

Electrical hookup of can motors requires that the proper overloads, motor starter and safety devices be installed. Failure to include these safety protections can lead to serious injury, damage to the equipment and voids any Stokes warranty. Also follow standard motor wiring guidelines. Stokes requires a control circuit that includes the motor winding temperature switch and a mandatory water flow switch on all canned motor blowers. The safety devices are required to interrupt blower operation if heat transfer fluid or water-cooling is lost. Never operate a can motor blower without cooling water and heat transfer fluid. The integral over-temperature switch, set at 350° 350°F, is provided on the stator for inclusion in the motor control circuitry to limit motor operation in the event of stator over-temperature. over-temperature. The over-temperature switch cconnections onnections are the white leads in the motor wiring connection box. Incorporation of a water flow switch on the motor water jacket discharge of the blower is required to prevent operation without water flow. The flow switch is included on the 20 HP can motor models and is available from Stokes as an accessory for the 10 HP can motor models. See section 2.6 for specifications. A manual restart should be provided to prevent cycling in the event of an overload. Depending on blower size,  backing pump capacity and chamber chamber size, other devices such a interstage temperature sswitches, witches, timers or vacuum  pressure switches should be incorporated to protect the blower from thermal and mechanical overload or damage. Motor should be wired per the following diagram.

It is not possible to view the can motor rotation. The proper rotation can be determined determined by viewing the oil slinger through sight glass the motor end the blower. jog rotate the motor and view through the the large sight glass as theatblower coasts to of a stop. The oilMomentarily slinger should clockwise onthe canslinger motorrotation blowers.  The motor rotates oppo opposite site of the slinger direction.

INLET SIDE

INLET SIDE

flow direction flow direction

 

PAGE 3-8

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

 3.9 Mov Movin ingg , S torag e a and nd S hi hippi pping ng 3.9.1

Moving

When moving the blower, use straps to support the blower under the gear housing and bearing housing (bare shaft  blowers) or under the gear housing and the connecting flange of the motor to blower (direct drive and canned motors). Do not lift by the end of the motor; keep the strap as close to the blower housing as possible to maintain  balance. Use the proper rated straps for lifting. Do not use straps that have tears or show other evidence of damage. Eyebolts may also be used to lift vertical bare shaft blowers. Screw the eyebolts into tthe he inlet flange (top side) of vertical flow blowers for lifting. Use at least two eyebolts when lifting. Eyebolts should not be used to move direct direct drive or canned motor blowers as the unit will not be balanced due to the weight of the motor. APPROXIMATE WEIGHTS OF 6-INCH BLOWERS M-Seal Blowers

Model 607-MV05, -MH05 607-MV20, -MH20 615-MV10, -MH10 615-MV15, MH15 61B-MV10, -MH10 61B-MV25, -MH25 622-MV25, -MH25

3.9.2

Weight, lbs (kg) 590 (268) 700 (318) 705 (320) 775 (352) 750 (340) 925 (420) 1060 (481)

Canned Motor Blowers

Model 607-CV1, -CH1 615-CV1, -CH1 61B-CV1, -CH1 615-CV2, -CH2 61B-CV2, -CH2 622-CV2, -CH2

Weight, lbs (kg) 675 (306) 740 (336) 780 (354) 760 (345) 800 (363) 940 (426)

5 Mechanical Seal Blowers 

Model 607-5VR, -5HR 615-5VR, -5HR 622-5VR, -5HR

Weight, lbs (kg) 475 (215) 550 (249) 740 (336)

Storage

Prior to placing the unit in storage, the vacuum system should be run with an inert gas to purge the blower of corrosive gasses and media. media. If the unit is to be stored for long periods, loose loosen n the drive belts and drain oil for storage. Tag the unit with a checklist for restart. restart. Close off inlet and discharge ports to prevent dirt and contaminants from entering the unit. Desiccant moisture absorption packs should be add added ed to protect the blower’s internal parts. Oxygen service blowe blowers rs must not be ccoated oated with preservative oils. If possible, store the unit in a clean, dry environment, away from temperature extremes and damaging conditions. If the pump will be subjected to temperatures below freezing, drain the water jacket(s) and cooler/silencer (if applicable). The can motors have a motor water jacket; process isolation blowe blowers rs have water-cooled bearing housings. Completely drain all water lines and jacket(s) and cooler/silencer (if applicable) to prevent cracking. 3.9.3

Shipping

When shipping blowers, drain oil and and heat transfer fluid. Drain all water-cooling lines and jackets to avoid freeze damage. [If shipping the unit during winter months, contact Stokes for information to further protect against freezing  by using antifreeze.] Blowers are shipped from Stokes securely mounted on a wooden skid and crated crated to prevent damage. The shipping skid is designed for movement with a fork truck. tr uck. When shipping blowers from the customer’s facility, package to  prevent movement on the skid and protect the unit from consequential consequential damage during shipping.

PAGE 3-9

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

4.0 Operation 4.1 P re-Sta re-Start rt C heck Review all applicable manual sections relevant to the model blower to be operated before attempting to run. 1.

Follow all safety precautions in section 1.2

2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.

The blower and vacuum vacuum piping should be properly mounted and secured. secured. The lubrication reservoirs shou should ld be filled to the center of the sight glasses glasses.. Piping must be chec checked ked for debris in the fore-line, blower and exhaust piping. Unit must be checked for free rotation. Unit must be checked for proper direction of rotation. Check motor-to-blower alignment. (Direct Drive Blower Only) Check alignment of pulley pulleyss and and tensions tensions of belts. (Pulley Driven Driven Blowers Only) Motor shou should ld be wired with proper o overloads verloads and ssafety afety cutouts. Precautions to avoid poss possible ible injury or hazardous situations must b bee taken. Always use inert or other safe gasses to purge process process gasses and break vacuum. vacuum. Cooling water must be flowing through the ca can n motor water jacket and the mandatory ssafety afety flow switch. (Can Motor Blowers Only) 13. The proper amount of he heat at transfer fluid should be in the motor housing. housing. (Can Motor Blowers Only) 14. Cooling water must be flowing through the bearing housings housings (Process Isolation Isolation Blowers Only).

4.2 S ta tartup rtup The following procedure should be followed when starting the vacuum vacuum equipment. If any problems are found, stop the blower equipment and break break vacuum. Do not operate the equipment equipment without correcting all problems. 1. 2. 3. 4. 5. 6. 7. 8.

Review Pre Pre-Start -Start Check, Section 4.1 and assure assure all installation requirements have been met. Isolate vacuum pumps from v vacuum acuum system or chamber. Start backing pump. Start blower when appropriate cut-in pressure is reached. Run at blankoff blankoff for 5 minu minutes. tes. Check for unusual unusual noises and eexcessive xcessive vibration. Run at blankoff blankoff for one hour. hour. Check for unusual unusual noises noises and and excessive excessive vibration. Run at normal operating conditions for about 15 minutes. Check for unusual noises aand nd exce excessive ssive vibration. During the first week of operation, check the following daily. Oil levels should be in the middle of the sight glasses with the blower blower stopped. Check drive system. Check heat transfer fluid on on canned motor blowers.

4.3 Shutd S hutdown own Precautions to prevent hazardous, toxic, flammable or explosive situations in the vacuum system, chamber, chamber, vacuum  pumps and exhaust system system must be taken. Always use inert or other safe gasses to purge p process rocess gasses and b break reak vacuum. Byproducts of the vacuum process could collect collect in the pump lubricants creating potential hazards. 1. 2. 3. 4.

Close the v vacuum acuum system isolation valve to isolate the pumps from the rest of the ssystem ystem or cha chamber. mber. Shutdown the blower motor. Allow cooling wa water ter to flow for a minimum of 1 15 5 minutes to cool motor stato statorr windings (Can Motor Blowers Only). Stop backing pump and brea break k vacuum to avoid reverse operation. operation. Break vacuum vacuum with a ga gass that will not create a hazardous, toxic flammable or explosive situation.

PA GE 4-1 4-1 

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

5.0 Maintenance and Repairs  5.1 G ener eneral al Major repairs beyond normal maintenance should be performed by the factory or trained t rained service personnel. Warranty failures should not be repaired by customers unless written authorization has been obtained from Stokes Vacuum Inc. Unauthorized disas disassembly sembly during the warran warranty ty period may void the warranty. Equipment must h have ave Return Authorization (RMA)your and local Declaration all Hazardous materials prior to being returned for service or repairMaterial to Stokes Vacuum. Contact Stokes of sa sales les office. Stokes also has trained service personnel available for repair and maintenance service 24 hours a day in your facility. For parts parts call 1-800-445-3411. For service call 1-800-537-1913. A consistent program of inspection and maintenance servicing is the most effective method of minimizing blower repairs or operating problems. A simple record of services and and dates is recommended. Lubrication is the most important maintenance item. The blower must be operated according to the Stokes spec specified ified limits. Seal(s) bearing and gears are normal wear items. The bearings and gears supplied with Stokes blowers are generously sized and should give years years of trouble-free service under normal operation. Mechanical shaft seals can have a service life greatly extended by maintaining clean lubrication. lubrication. Drive belts and coupling hardware should be kept in compliance with belt and coupling specifications in this manual.  No attempt is made in this manual to outline procedures for replacing seals, bearings, gears or for timing the impellers. Best results will be obtained by having such repairs done at the factory or by Stokes Maintenance Personnel at your facility. Stokes Vacuum offers training for servicing Stokes Blowers and and Microvacs®.

 5.2 Maintenanc Maintenance eS Sch chedule edule Under severe operating conditions, such as contamination within the vacuum system or excessively high operating temperatures within the vacuum blower, more frequent oil changes are recommended. Operating conditions determine frequency of lubricant lubricant changes. Worn pulleys and over tension shorten belt life as much as 50%. If wear allows the belts to contact the bottom of the pulley, slippage and belt burn may result. Convex wear on the side of the belts indicates pulley groove wear. Alignment problems are evident by significant wear on one side of of a belt only.

Suggested M aniten anitenance anitenance ance Schedule for N ormal Oper Operation ation D ecreas ecreas e interva intervals ls or s evere s ervice cond condition itionss . Oil cond condition ition is the rime indica indicator tor o the need  for shortened shortened service intervals. intervals. IITEM T EM Oil Levels

Daily

Oil Changes

Every 2000 hrs.

Coupling Condition Belts and Pulleys Heat Transfer Fluid (Canned (Can ned M otors) Bearing Condition

Every 2000 hrs. Every 2000 hrs.

MA M A INTENANCE I N T E N A N C E TO T O PERFO PERFORM P E R F O RM RM Add fluid as Required Drain, check m magn agnetic etic plug for filings. Ref Refill ill with clean lubricants. Replace spider, if worn. Replace belts or pulleys, if worn.

Ev Eve ery 6 months

Ma Maiintain Lev Level. Ad Add d as required.

Every 6 months

Check endplay. Service if required. Remove dirt to reduce wear and promote heat transf transfer er Retime blower blower if requi required red.. * Conta Contact ct Stokes Vacuum for service.

Clea Cle an Motor Motor and and Driv Drive e  Ti  Tim ming ing

I N T E RV A L

Ev Ever ery y yea yearr Ev Ever ery y 2 yea earrs

PA GE 5-1 5-1 

 

STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S

 5.3 Trouble Tr ouble S Shooti hooting ng  No pump will give good results on a poor vacuum vacuum system. If the vacuum in the system is unsatisfac unsatisfactory, tory, the usual cause is leakage. leakage. A first step in poor vacuum is to tighten all fittings and verify all valves valves are closed. Pipe connections should be made with liquid sealant not Teflon tape. A leak up rate test will help localize a vacuum leak. Such a test is easily made by succes successively sively isolating and evacuating section thevacuum sys system. tem.leak Thedetector of up each can be mea measured. sured. pressure change rateeach is then noted.of A dein-leakage tector will rate speed theisolated process processsection of locating leaks. StokesThe Vacuum offers vacuum leak detection services.  Note- Helium leak detection may indicate a vacuum vacuum leak at the blower mechanical seal. The mechanical seal leak rate is tested at the factory to not exceed .002 SCFM. New seals generally do not exceed leak rates of .0005 SCFM  but may indicate a helium leak. The specification leak rate is generally not significant significant when compared to the blower  pumping speeds. The seal carrier can be purged with a sealing gas to avoid system air contamina contamination tion when required.

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STOKES VA CUUM 6 IINCH NCH MSEA L MODEL B BLOW LOWER ERS S Problem Machine does not start

 No gas flow

Low capacity

Excessive power

Possible Cause Electrical Rotor rub or damage Casing distortion Foreign material Speed too low Wrong rotation Obstruction in piping Bypass open Speed too low Excessive pressure rise

Insufficient clearances Blower body distortion Excessive operating pressure

Solution Check electrical supply and control wiring. Restore clearances. Relieve pipe stain or body distortion. Check system for material. Check for belt slip and adjust. Check rotation, Switch any two leads. Check piping, valves for open flow path. Free valve using a momentary gas rush. Check backing pump. Check actual inlet and discharge pressure against predicted values. Remove cause. Remove cause. Check system, valves, fittings, plugs for leaks. Check speed. Compare with rated. Check actual inlet and discharge pressure against predicted values. Check rotation. Switch any two leads. Check outside of cylinder, endplates, high temperature areas and impellers for contact. Correct clearances. Relieve pipe strain or body distortion. Remove cause.

Excessive temperature Filter clogged Oil overfilled Excessive pressure differential Poor vacuum Oil level incorrect Dirty lubrication Coupling misalignment Excessive belt tension Insufficient water flow Impeller timing Blower body distortion Excessive operating pressure Excessive temperature Worn bearings Worn gears Drive misalignment Insufficient anchoring support Impeller drag Worn bearings Worn gears Oil cavity plug leak Vacuum leak Worn seal Impeller tip drag Worn bearing Gear backlash Improper belt tension Improper oil level Low heat transfer fluid level Insufficient water flow Safety devices wiring Improper overloads

Remove cause. Clean or replace filter. Adjust oil level. Check cut in pressure and backing pump. Check system for leaks & purge rates. Adjust oil level. Change oil. Realign coupling. Readjust alignment and tension. Adjust water flow. Check timing and readjust as required. Relieve pipe stain or body distortion. Remove cause. Remove cause. Replace bearings. Replace gears. Readjust alignment and tension. Add support to eliminate vibration. Adjust timing and clearance. Replace bearings. Replace gears. Replace plug O-rings. Check seal O-rings and vacuum joints. Replace seal, static ring and O-rings. O-ri ngs. Check timing and readjust as required. Replace bearings. Replace gears. Re-tension belts. Slightly lower oil level. Adjust fluid level. Increase water flow to activate flow switch. Check wiring. Check overloads.

Obstruction in piping Excessive belt slip System leak Speed too high Pressure too high Wrong rotation Impeller rub

Impeller tip drags on impeller or blower  body Excessive blower temperature

Overheating  bearings or gears

Knocking

Vibration

Loss of oil

Abnormal noise

(Seal squeal) Can motor will not operate or motor cuts out

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