Robinair 25200B Refrigerant Recovery Unit - Manual (Page 10)

8
Troubleshooting Tips
Compressor does not start
Problem: Compressor circuit breaker has tripped.
Solution: Depress the circuit breaker switch.
Problem: HIGH PRESSURE light is on.
Solution: The high side pressure switch has tripped; verify the tank and
hose ball valves are open. Check tank and verify it is not full.
Problem: COMPRESSOR switch is not on.
Solution: Press the COMPRESSOR switch to ON.
Compressor runs but does not move refrigerant
Problem: The ball valves on the hoses are not open.
Solution: Open the ball valves.
Problem: The tank valves are not open.
Solution: Open the valves.
During recovery, unit shuts off on high pressure
Problem: The refillable tank valves are not open.
Solution: Open the tank valves.
Problem: Valves on hoses are shut.
Solution: Open valves.
Unit will not pull down to appropriate vacuum level
Problem: There is a leak in the A/C system.
Solution: Fix the leak.
Problem: Trapped pockets of refrigerant.
Solution: Allow system to stabilize then heat with a heat gun.