Robinair 34988 Recovery, Recycling, Recharging Unit - Manual (Page 20)

18
System Flush
6. Attach the compressor block adapter (from the
flushing kit) to the system side of the compressor
block.
7. Configure the block connectors to provide
forward- or back-flushing of the refrigerant.
Note: Refrigerant flows from the red high-side
connector to the blue low-side connector.
8. Open the red service coupler.
9. Connect the filter housing to the desired return
side of the adapter block and to the blue low-
side hose.
10. Open the blue service coupler.
11. Verify that a flushing filter is correctly installed
in the flushing filter housing. Open the isolation
valve on the hose.
Operating Instructions
1. Select SYSTEM FLUSH.
2. Select START to accept the default flush time of
10 minutes, or enter the desired flush time using
the keypad and select START .
3. The vacuum pump runs for five minutes to
remove air from the A/C system, if needed.
4. The unit flushes the system for the designated
length of time, and then enters a recovery mode.
5. Oil that has been collected drains into the
graduated oil drain bottle. Remove the bottle and
measure the oil.
Dispose of oil according to the laws in your
jurisdiction. It is the responsibility of the user to
determine if a material is a hazardous waste at
the time of disposal.
6. When the unit displays FLUSH COMPLETE,
close service couplers, remove hoses, and
reassemble the vehicle’s A/C system to its
original state.
7. Open the valve on the source tank.
8. Evacuate and recharge the vehicle according to
the instructions in this manual.
WARNING: Do NOT disconnect
service couplers during the flushing
process . Refrigerant could spray out
of the fittings, and exposure may
cause personal injury .
Operating Tips
If the external flushing filter is plugged,
the unit displays
NO FLOW DETECTED. FLUSH FILTER
MAY BE BLOCKED.
CHECK CONNECTIONS AND VALVE
POSITIONS.
TO CLEAR FILTER FOR
REPLACEMENT, CLOSE FLUSH
FILTER ADAPTER VALVE AND
SELECT START.
SELECT EXIT TO ABORT
OR RETRY TO CONTINUE WITHOUT
REPLACING FILTER.
The message repeats until the filter is
replaced.