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25 2008SSD-34 (5/08)
Dual-Compressor Module Maintenance
4.6 Cleaning the Inlet Screen
The 30-mesh screen in the inlet block must remain unobstructed for optimal fl ow rate. If the fl ow rate is
lower than expected even when the Compressor is running properly, this screen may be obstructed.
Figure 17 Gas Inlet Block and Screen
To inspect and clean the inlet screen:
1. Turn off and isolate the Compressor from all power sources.
2. Turn off the gas supply.
3. Vent the system to 0 psig.
4. Remove the SAE plug on the side of the inlet block.
5. Remove the screen.
6. Inspect the screen and inside of the block. Clean or replace if necessary.
7. Replace SAE nut.
8. Return the Compressor Package to service.
9. Check for leaks at all fi ttings that have been disturbed.
4.7 Servicing the Scavenge Line Orifi ce
The scavenge line orifi ce in the oil separator block must remain clear of obstruction. If this orifi ce is
restricted, the secondstage oil separator can become saturated, increasing oil consumption.
Note: image shown is 90 degree orifi ce. Procedure is the same for straight orifi ce.
Figure 18 Scavenge Line Orifi ce
Orifice
To inspect and clean the orifi ce:
1. Turn off and isolate the Compressor from all power sources.
2. Turn off the gas supply.
3. Vent the system to 0 psig.
4. Disconnect the tube and remove the fi tting.
5. Inspect the screen. Clean or replace the fi tting assembly if necessary.
6. Replace the fi tting and reconnect the tube. Tighten the swage nut hand tight plus 1/4 turn.
7. Return the Compressor Package to service.
8. Check for leaks at all fi ttings that have been disturbed.