Refrigerant Extraction

Refrigerant extraction

1. Connect service unit to the system.

Hinweis
Check at the liquid reservoir whether the sight glass is still transparent. If the sight glass shows signs of brown discoloration on the inside, the refrigerant should be prefiltered by means of a cleaning drier installed in-between in the extraction hose. In this case, extract only via the high-pressure side.

2. Open the shut-oft valve, low pressure (4) shut-off valve, high pressure (5) and shut-off valve, refrigerant inlet (8).

3. Turn the main switch (16) fully to the right. The green pilot lamp lights up.

Note: Extraction takes place automatically. The unit is switched off when all refrigerant has been extracted from the circuit. The red pilot lamp then lights up.

4. Close shut-off valves 4,5 and 8.

5. Open the refrigerating oil drain cock (15) and drain extracted refrigerating oil.

6. Determine the volume of the refrigerating oil.

Note: The refrigerating oil is now sucked into the system via the high-pressure side.

7. Fill system with new refrigerating oil (extracted volume + 10 cm3).