Freon Recovery Procedure

1. Connect service unit to the system.

NOTE: 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 pre-filtered by means of a cleaning dryer installed in the extraction hose. In this case, extract only via the high-pressure side.





2. Open the shut-off 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 for replacement.

NOTE: Do not reuse extracted refrigerating oil.

Replacing Refrigerating Oil
1. Unscrew the red hose on the service unit at connection piece 9 and hold in the container with new refrigerating oil (amount measured during extraction).
2. Switch on vacuum pump, open shut-off valve for low pressure (4) and vacuum pump (7).

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

3. After filling the refrigerating oil, close the shut-off valves and switch off the vacuum pump.
4. Disconnect the service unit.