Robinair 25200B Refrigerant Recovery Unit - Manual (Page 8)

6
operating Instructions
self-ClearInG ProCedUre
CAUTION! Do not mix refrigerant types. Always perform the self-
clearing procedure after each recovery. Beginning each job with a
“clean” unit will help eliminate mixing of different refrigerant types.
1. Close the ball valves on the red and blue hoses connected to the A/C-R
system. Disconnect these hoses from the system’s access ports.
2. Close the blue LIQUID valve on the tank and the ball valve on the blue
TANK LIQUID hose. Disconnect the TANK LIQUID hose from the tank.
3. Verify the red TANK VAPOR hose is still connected to the red VAPOR fitting
on the tank. Both the tank’s red VAPOR valve and the ball valve on the red
TANK VAPOR hose should be open.
4. Press the switch to SELF-CLEAR. You will hear the compressor start and the
switch will illuminate.
5. Let the compressor run until the system pressure gauge reaches the
appropriate vacuum level. The system pressure gauge will return to
VACUUM. Press the COMPRESSOR switch to OFF. Unplug the unit from
the electrical source.
6. Close the red VAPOR valve on the tank and the ball valve on the red TANK
VAPOR hose. Disconnect the TANK VAPOR hose from the tank.
WarnInG
To prevent personal injury, disconnect hoses using extreme
caution. All hoses may contain refrigerant under pressure.
7. While the hoses are still connected to the unit, slowly open the ball valve
on each hose to relieve any pressure in the hose. Close the ball valves, then
disconnect the hoses from the unit.