Model H1301 Recovery and Recycling System
Installation, Operation and Maintenance Manual
Revision-L September, 2019
Page 85 of 105
VII. System Maintenance Procedures (continued)
O. Vapor Compressor Oil Renewal
The vapor compressor oil should be changed at least once a year or more often with
heavy usage of the machine. When an oil change is anticipated the machine should be
allowed to operate through normal recovery until the oil level in the compressor just falls to
the bottom of the compressor sight glass. This will result in minimum oil spillage during the
renewal procedure. Refer to section-F figures 8 and 9 for component location.
Required Materials:
Straight Blade Screwdriver
Philips Drive Screwdriver
1” Socket Torque Wrench
Oil Sump Pump
Funnel with Flexible Fill Tube
Cloth Rags
Vacuum Pump
Vacuum Gauge
Nitrogen Gas Source
Leak Detector Fluid
Teflon Pipe Thread Tape
Compressor Oil 3GS 150 Grade
Cut a ¼” refrigeration service hose to form a hose with one fitting end containing a Schrader
valve core depressor and the opposite end of the hose is the open cut end
Clean 18 ounce container
1. Place the System Power Switch to the OFF Position.
2. Disconnect the main electrical power from the machine.
3. Open the filter access door of the hood and separate the two halves of the hood fan
electrical connector.
4. Remove the three screws along the top of the control panel and the three screws on
both sides of the control panel hood. With a helper, lift the hood up and over the control
panel.
5. Close filter maintenance ball valve MV-2
6. Place a small container under the oil sight glass of the compressor.
7. Remove the sight glass using the 1” wrench.
8. Clean any thread tape residue from the threads of the sight glass and the threads of the
compressor spud.
9. Complete removal of the compressor oil by feeding a tube down into the compressor
housing through the empty sight glass spud and sucking the oil out with the oil sump
pump.
10. Use the funnel with the flexible fill tube to fill the compressor housing will the 3GS
compressor oil until the oil level is just at the bottom of the sight glass spud.
11. Apply Teflon thread tape to the threads of the sight glass and install the sight glass
back into the compressor-housing spud using the torque wrench with the 1” socket.
WARNING! DO NOT OVER TIGHTEN THE SIGHT GLASS above 20 foot-pounds
of torque. DO NOT reuse the sight glass if the viewing window is cracked,
scratched, or marred in any way.
12. Remove the cap from the AV-3 oil fill maintenance valve.
13. Adjust the pressure of the nitrogen source to 200 psi.
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