Rothenberger ROREC Pro A3 Bedienungsanleitung Seite 27

Liquid push/pull mode:
An electronic scale is needed to monitor the recovery process to prevent overfilling!
Preparation:
Connect the hoses correctly and firmly. Make sure all valves are closed.
1. Turn the knob to "FAST".
2. Connect hose 1 to the vacuum pump.
3. Start the vacuum pump to pump the vacuum.
4. Let the vacuum pump run for 20 secs, close the ball valve on hose 1 turn oft the vacuum
pump, and remove the hose from the vacuum pump.
5. Connect hose 2 and repeat step 2, 3, 4.
6. Connect the hoses to the gas port of the system and the liquid port of the refrigeration tank.
Start operation:
7. Open the vapor valve, liquid valve of the HVAC system.
8. Open the ball valves on the connecting hose 1 and hose 2.
9. Open the vapor valve, liquid valve of the tank.
10. Press "START" button to start machine, then it starts liquid push/pull mode.
If the reading on the scale keeps the same or changes slowly, it means liquid in HVAC system
has been recovered and vapor recovery mode can be underway.
11. Turn the knob slowly to "Purge" and start purging mode for the liquid.
12. Turn the knob to "Close".
13. Close the vapor valve, liquid valve of the HVAC system.
14. Close the vapor valve, liquid valve of the tank.
15. Close the ball valves on the hose connecting the recovery machine outlet and the system.
16. Close the ball valves on the hose connecting the refrigerant tank and the system.
17. Reconnect the hoses, and start recovery mode for the vapor.
ENGLISH 23