Tesla TA36FFUL-1232IA [49/56] Procedures of charging refrigerants
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Tesla TA36FFUL-1232IA [49/56] Procedures of charging refrigerants

Tesla TA36FFUL-1232IA [49/56] Procedures of charging refrigerants
49
ENG
Removal and Vacuum Pumping
1. Make sure there is no ignited fire source near the outlet of the vacuum pump and the ventilation is well.
2. Allow the maintenance and other operations of the refrigeration circuit should be carried out according to the
general procedure, but the following best operations that the flammability is already taken into consideration are
the key. You should follow the following procedures:
• Remove the refrigerant.
• Decontaminate the pipeline by inert gases.
• Evacuation.
• Decontaminate the pipeline by inert gases again.
• Cut or weld the pipeline.
3. The refrigerant should be returned to the appropriate storage tank. The system should be blown with oxygen
free nitrogen to ensure safety. This process may need to be repeated for several times. This operation shall not
be carried out using compressed air or oxygen.
4. Through blowing process, the system is charged into the anaerobic nitrogen to reach the working pressure
under the vacuum state, then the oxygen free nitrogen is emitted to the atmosphere, and in the end, vacuumize
the system. Repeat this process until all refrigerants in the system is cleared. After the final charging of the
anaerobic nitrogen, discharge the gas into the atmosphere pressure, and then the system can be welded. This
operation is necessary for welding the pipeline.
Procedures of Charging Refrigerants
Scrap and Recovery
As a supplement to the general procedure, the following requirements need to be added:
- Make sure that there is no contamination among different refrigerants when using a refrigerant charging device.
The pipeline for charging refrigerants should be as short as possible to reduce the residual of refrigerants in it.
- Storage tanks should remain vertically up.
- Make sure the grounding solutions are already taken before the refrigeration system is charged with refrigerants.
- After finishing the charging (or when it is not yet finished), label the mark on the system.
- Be careful not to overcharge refrigerants.
Scrap:
Before this procedure, the technical personnel shall be thoroughly familiar with the equipment and all its features,
and make a recommended practice for refrigerant safe recovery. For recycling the refrigerant, shall analyze the
refrigerant and oil samples before operation. Ensure the required power before the test.
1.Be familiar with the equipment and operation.
2.Disconnect power supply.
3.Before carrying out this process, you have to make sure:
• If necessary, mechanical equipment operation should facilitate the operation of the refrigerant tank.
• All personal protective equipment is effective and can be used correctly.
• The whole recovery process should be carried out under the guidance of qualified personnel.
•The recovering of equipment and storage tank should comply with the relevant national standards.
4. lf possible, the refrigerating system should be vacuumized.
5. If the vacuum state can’t be reached, you should extract the refrigerant in each part of the system from many
places.
6. Before the start of the recovery, you should ensure that the capacity of the storage tank is sufficient.
7. Start and operate the recovery equipment according to the manufacturer’s instructions.
8. Don’t fill the tank to its full capacity (the liquid injection volume does not exceed 80% of the tank volume).
9. Even the duration is short, it must not exceed the maximum working pressure of the tank.
10. After the completion of the tank filling and the end of the operation process, you should make sure that the
tanks and equipment should be removed quickly and all closing valves in the equipment are closed.
11. The recovered refrigerants are not allowed to be injected into another system before being purified and tested.
Note: The identification should be made after the appliance is scrapped and refrigerants are evacuated. The
identification should contain the date and endorsement. Make sure the identification on the appliance can reflect
the flammable refrigerants contained in this appliance.

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