Emerson SZV22 Manuel D’Utilisation

RIGHT SIDE VIEW

Oil is drained from the system through the Schrader valves on the Compressor suction fi ttings, fi rst-stage 
oil separator and oil cooler (see Figure 16 on page 23).

See 4.4 - Oil Capacity and Type on page 20 before adding oil. Also refer to 4.2 - Maintenance Tools  on 
page 19 for information about the tools used in this procedure.

NOTE
Adding oil through the Schrader valve on either compressor suction fi tting permits adding the oil 
with the compressor running.

1.  Turn the knob on the backseating control valve fully 

counterclockwise.

2.  Remove the protective cap from the Schrader valve 

on either compressor suction fi tting and connect the 
backseating control valve.

3.  Connect one end of the oil transfer hose to the back-

seating control valve.

4.  Connect the opposite end of the hose to the oil transfer 

pump.

5.  Pour PAO oil into a clean container and attach the 

extension hose to the threaded neck of the container.

6.  Turn the knob on the backseating control valve clockwise to open the Schrader valve and slowly open 

the oil transfer hose ball valve. 

 When pressure is applied to the oil pump, the handle may extend rapidly.

7.  Move the pump handle slowly using long, slow, full strokes on the pump handle to transfer oil into the 

Compressor until the desired oil level is reached. One full pump stroke dispenses 1.6 oz. (47ml) of oil 
(see 4.3 - Checking the Oil Level on page 21).

8.  Turn the knob on the backseating control valve counterclockwise to close the Schrader valve and 

remove the control valve.

9.  Replace the protective cap on the Schrader valve.

10.  Return the Compressor Package to service.

11.  Check for leaks at all fi ttings that have been disturbed.