Robinair 348012K Recovery, Recycling, Recharging Unit - Manual (Page 20)

© 2000 Robinair, SPX Corporation
1 8
Operating Instructions
REPLENISHING A/C SYSTEM OIL
Before charging the A/C system, you must replenish any oil removed from the A/C
system during the recovery process.
1. Select the correct oil for the A/C system being serviced. Refer to the vehicle
manufacturer's service manual.
CAUTION! CAUTION! CAUTION! CAUTION! CAUTION!
To prevent air from entering the A/C system, never let the oil
level drop below the pick-up tube while charging or replenishing.
2. Adjust the O-ring around the oil injector bottle to the required oil charge level.
For example, if the bottle's oil level is at 4 ounces and you need 1/2 ounce of
oil to replenish the A/C system, place the o-ring at the 3 1/2 ounce level.
3. Install the bottle on the oil injection assembly on the back of the unit.
CAUTION! CAUTION! CAUTION! CAUTION! CAUTION!
Never open the oil injection valve while there is positive
pressure in the A/C system. This action could blow oil back through the bottle
vent.
4. Place the Low Side valve in the Closed position. Place the High Side valve in
the Oil Inject/Charge position.
5. Turn the oil injection valve at the top of the bottle and watch the level of oil
being drawn into the A/C system. This process takes only seconds—watch
carefully!
6. Turn OFF the valve when the required oil charge has been pulled into the
system.
Oil
Injector
Bottle
IMPORTANT!
You can charge
oil through either
the low side or
high side, or
both, depending
on the vehicle
manufacturer’s
recommendation.
Just open the
appropriate
manifold valve or
valves.
Oil
Drain
Bottle
Closed
Oil Inject/Charge
INST 0770 INST 0713