Robinair 34134-2K Refrigerant Recovery, Recycle, Recharge Unit - Manual (Page 11)

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34134-2K Recovery, Recycling and Recharging Unit
Operating Instructions
RECOVERING REFRIGERANT
Use the following steps to take refrigerant out of a vehicle:
1. Connect the unit’s 60" (1.5m) red high side hose with the service coupler to
the high side fitting of the A/C system, then open the service coupler valve.
2. Connect the unit’s 60" (1.5m) blue low side hose with the service coupler to
the low side fitting of the A/C system, then open the service coupler valve.
3. Check the manifold gauges — both should register above zero. If there is no
system pressure, there is no refrigerant in the system to recover.
4. Be sure the oil drain valve (see page 5 for oil drain valve location) is closed.
5. Open both manifold valves.
6. Verify both tank valves are open.
7. Plug the unit into the correct voltage outlet.
8. Turn the control panel switch to RECOVER. Recover refrigerant until the low
side manifold gauge reads 13 in. Hg (0.44 Bar).
9. Close both manifold valves.
10. Turn the RECOVER/VACUUM switch to OFF.
11. Wait 5 minutes. Monitor the manifold gauges for a pressure rise above zero. If
a rise occurs, repeat steps 5 – 10.
CAUTION!
Drain the oil from the separator only after each recovery. Do not
depressurize the oil separator.
12. Be sure the oil catch bottle is empty, then slowly open the oil drain valve, and
drain the oil into the oil catch bottle. This oil was removed from the A/C
system during recovery. When all the recovered oil has completely drained,
close the valve and record the amount of oil in the bottle.
The A/C system is empty. Make any repairs at this time.
EVACUATING THE A/C SYSTEM
To ensure complete evacuation of the A/C system, use the following steps:
1. With the high side and low side hoses connected to the A/C system, open both
manifold valves.
2. Verify both tank valves are open.
3. Turn the control panel switch to VACUUM. Follow the manufacturer's
recommendations for evacuation time.
4. Turn the RECOVER/VACUUM switch to OFF.
5. Wait 5 minutes. Monitor the manifold gauges. Any rise indicates a leak in the
A/C system. Locate and repair. Repeat steps 3 – 5 until there is no longer a
rise on the gauges.