Flushing Kit K700 - EnG_rev0

May 24, 2018 | Author: hissen88 ali | Category: Air Conditioning, Valve, Technology, Nature

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Flushing Kit K700 - EnG_rev0...

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FLUSHING KIT ON KONFORT SERIES 700 This document is aimed to describe the procedure to install and to set-up the Flushing Kit (article no. ACKF01) ACKF01 ) on Konfort 700 series units.

INTRODUCTION The purpose of the Flushing Kit is that of employ the refrigerant contained into the tank of the Konfort unit to perform the maintenance of the A/C systems, in order to flush and to clean up: 

lubricant (PAG or POE oil);

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UV additive;

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detritus (metallic impurities and powders)

which are remaining into the hydraulic circuit (this clean action is absolutely necessary after a break of a main component of the A/C system, such the compressor). The flush of an A/C system (especially after a first component break) is very important, because: 

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the removal of stuck impurities from the inner part of the hydraulic circuit of the system avoids, after the replacement of the broken part, that in few time also the new part could break; many component manufacturers require a declaration of occurred flush of the A/C system before proceeding with the failed component replacement. This oblige is required for the recognition of the warranty on warranty on the replaced component (this is the reason for which we suggest to provide the Konfort unit also with a thermal printer, in order to perform a printout of the flushing report).

WHY USING THE REFRIGERANT FOR FLUSHING The main advantage of using refrigerant to flush and clean the i nner parts of the A/C system is is given by the fact that the refrigerant is characterized by excellent solubility properties against the residual lubricant inside the system (this lubricant usually sticks the metallic impurities into the deepest parts of the A/C system). Therefore, it ensures excellent cleaning performances and avoids the risk of damage of the inner components of the A/C system by other types of detergents. It guarantees a full compatibility compatibility with the A/C system, as it is the fluid with which the system works in normal conditions. TEXA Flushing Kit ensures to the end user the chance to be provided pr ovided with a flushing equipment which consists only in an accessory of the Konfort unit, thus not obliging him to buy specific tools for flushing and by guaranteeing excellent cleaning performances with low costs. ��

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FLUSHING KIT CONNECTION TO THE KONFORT UNIT In order to install the TEXA Flushing Kit canister to the Konfort unit, the following operations will need to be performed: 

put the screws with the corresponding aluminum rings (all included into the package) on the corresponding holes on the side of the unit. Lock the screws with a proper Allen wrench:

Image 1 – Support rings and screws connection

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connect the canister to the two rings on the side of the unit:

Image 2 – Canister connection to the side of Konfort 700 unit

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The two aluminum rings must be inserted on the holes of the metallic pad behind the canister. Once inserted, the canister must shift down in order to be locked:

Image 3 – Locking of the canister on the rings on the side of a Konfort 700 unit

Once the canister installation will be performed, the following hydraulic connections must be performed: 

The red flushing hose (part no. 3900171) must be connected to the input of the flushing canister:

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Image 4 – Connection of the red flushing hose to the input of the canister

The role of the black canister is that of improving the vacuum during the flushing process, thus allowing the refrigerant to reach the part which needs to be flushed with a higher force. The bigger diameter of the red flushing hose has the function of improving the high pressure refrigerant flow towards the part to be flushed. ��

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The blue LP hose of the Konfort unit must be connected to the output of the flushing canister:

Image 5 – Konfort LP hose connection to the output of the flushing canister

This connection will allow the Konfort unit to recover the refrigerant from the canister once the flushing process will be completed. 

The other end of the red flushing hose must be equipped with the 1/4” x 3/8” adapter (part no. 3900172):

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Image 6 – Connection of the 1/4” x 3/8” adapter to the red flushing hose

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Connect the 1/4” x HP R134a adapter (part no. 3900173) to the HP quick coupler of the unit:

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Image 7 – Connection of the 1/4” x HP R134a adapter to the HP quick coupler 

If the Audi-Volkswagen adapter set is used, connect the 3/8” x HP R134a adapter (part no. 3900174) to the HP quick coupler of the unit:

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Image 8 – Connection of the 3/8” x HP R134a adapter to the HP quick coupler

WARNING: The Audi-Volkswagen adapter set is not included into the TEXA flushing kit, it must be purchased directly from the VAG Group.

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Before starting the flushing process, ensure that the DRAIN oil bottle of the Konfort unit will be empty. This will prevent the oil/UV from coming out from the bottle during the cleaning process:

Image 9 – Ensure that the DRAIN oil bottle will be empty before starting the flushing process 

Before starting the flushing process, ensure that the internal tank of the Konfort unit will contain at least 5 kilograms of refrigerant:

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At least 5 kg of refrigerant

Image 10 – Refill at least 5 kg of refrigerant inside the Konfort unit before starting the flushing process

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FLUSHING KIT CONNECTION TO THE A/C SYSTEM In order to get information about how to perform the hydraulic connection of the flushing kit to the A/C system (or to a part of the A/C system) of the vehicle, refer to Chapter 5 (Introduction to Flushing with Refrigerant ) and Chapter 6 (Flushing Method with ACKF01 Kit ) of the user manual supplied together with the ACKF01 kit.

HOW TO START THE FLUSHING PROGRAM WARNING: Before starting the flushing process, ensure that the firmware of the Konfort unit will be updated to the latest version. Refer to the Konfort 700 operative manual in order to get the information about the firmware version. In order to launch the flushing program, access the Additional functions from the main menu of the Konfort unit:

Image 11 – The Additional functions option in the Konfort main menu

then select the option named A/C system flushing:

Image 12 – The A/C system flushing option to start the flushing process

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By selecting this function with the ENTER   button, the unit will provide the chance to choose between Single Flushing or Multiple Flushing:

Image 13 – Possibility to choose between Single Flushing mode and Multiple Flushing mode

INTRODUCTION TO FLUSHING MODES SINGLE FLUSHING: This program mode is performing only one flushing cycle. This configuration is used in case of small contamination and/or simple oil/UV additive removing. MULTIPLE FLUSHING: This program mode allows to perform up to 10 consecutive flushing cycles (except for the vacuum which is performed only one time at the beginning). This configuration is used in case of heavy contamination due to a major failure as compressor damage.

Choose the preferred flushing mode by scrolling with the UP and DOWN button and by confirming with the ENTER   button on the desired selection. By choosing the Multiple Flushing option, the machine will allow to program up to 10 consecutive flushing cycles:

Image 14 – Choice of the number of flushing cycles in the Multiple Flushing mode

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Once the flushing mode will be selected, enter the Customer and the Vehicle data on the next pages, then press ENTER  button to confirm. The Konfort unit will ask to perform a preliminary Internal Cleaning before starting the flushing process:

Image 15 – Konfort internal cleaning request before starting the flushing process

By pressing the ENTER  button, the unit will show the following message:

Image 16 – Request to connect the quick couplers to the lateral ports of the Konfort unit

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Connect the HP and LP quick couplers of the Konfort unit to the corresponding lateral ports on the side of the equipment:

Image 17 – Connection of the HP and LP quick couplers to the lateral ports of the unit

then press the ENTER  button to confirm. The unit will show the following message:

Image 18 – Request to screw the valves on the HP and LP couplers

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Screw the valves on the two HP and LP quick couplers:

Image 19 – Screwing of the valves on the two quick couplers

then press the ENTER  button to confirm. The unit will start to perform the preliminary internal cleaning:

Image 20 – Konfort internal cleaning in progress

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Once the cleaning will be completed and the oil recovered during this phase will be drained to the oil bottle, the unit will show the following message:

Image 21 – Request to connect the HP quick coupler to the A/C system

Performed the described connection of the HP port to the part of the A/C system to be flushed according to what has been described by the previous Image 7 or Image 8 (depending on the vehicle brand and model, see also the ACKF01 user manual on Chapters 5 and 6). Ensure that the valve of the HP coupler will be screwed (hydraulically open) and that the thick red flushing hose will be also connected to the part of the A/C system to be flushed (see Image 6 and the ACKF01 user manual on Chapters 5 and 6). Then press the ENTER  button to confirm. The unit will show the following message:

Image 22 – Request to connect the LP quick coupler to the external flushing canister

Ensure that the LP quick coupler will be connected to the output of the flushing canister, as depicted on Image 5. Ensure also that the valve of the LP coupler will be screwed (hydraulically open).

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Then press the ENTER   button to confirm. The machine will start to perform a 5 minutes vacuum phase which is necessary for the flushing process for the creation of the right pressure condition which will ensure a proper cleaning of the part to be flushed:

Image 23 – Vacuum phase during the flushing process

Once the vacuum condition will be reached, the unit will automatically perform a 3 minutes vacuum hold test in order to ensure that the system will not leak during the next refrigerant flushing process:

Image 24 – Vacuum hold test during the flushing process

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At the end of the leak test, the unit will start to fill liquid refrigerant to the part of the A/C system to be flushed in order to clean the part from any possible impurity or contaminant:

Image 25 – Liquid refrigerant filling in order to clean the part of the A/C system which is being flushed

At the end of the refrigerant filling the unit will automatically start a recycling phase, followed by an oil drainage, in order to collect the refrigerant and the contaminants (oil/UV additive) from the part of the A/C system which has been flushed:

Image 26 – Refrigerant recycling during the flushing process

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Image 27 – Drainage of the recovered oil at the end of the flushing process

Once the recycling process will be completed, the unit will automatically show the following message:

Image 28 – Confirmation of the completion of the flushing process

thus indicating that the flushing process has been successfully carried out and by reporting the amount of oil/UV additive which has been extracted during the process. If the Konfort unit is provided with thermal printer, the unit will also perform a printout of the flushing report.

MONITORING THE FLUSHING PROCESS In order understand how to monitor the status of the flushing process from the sight glass mounted at the input of the flushing canister, refer to the description reported on Paragraph 6.7 of the ACKF01 user manual.

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MAINTENANCE In order to understand how to perform the maintenance of the flushing kit and of the unit after each flushing process, refer to the description reported on Chapter 8 of the ACKF01 user manual.

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Flushing Kit K700 - EnG_rev0

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