Procedures Of Charging Refrigerants; Scrap And Recovery - Beko BEVPA 090 Owner's Manual

11 Maintenance Notice
• D econtaminate the pipeline by inert gases.
• E vacuation.
• D econtaminate the pipeline by inert gases again.
• C ut 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.

11.7 Procedures of Charging Refrigerants

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.

11.8 Scrap and Recovery

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:
• I f necessary, mechanical equipment operation should facilitate the operation of the refrigerant tank.
• A ll personal protective equipment is effective and can be used correctly.
• T he whole recovery process should be carried out under the guidance of qualified personnel.
48 / 220 EN
Split type wall mounted air-conditioner / Owner's Manual