KAESER CSD 75, Service Manual, Page: 52 / 81

Maintenance
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9.12.3 Draining the oil using own compressed air
Shut down the compressor unit under full load (see chapter 8.4).
Lock the main disconnect in the ”off” position in accordance with ap-
plicable lock out/tag out procedures to ensure the compressor does
not restart.
Lock the isolation shut-- off valve in the ”closed” position and vent all
compressed air trapped between the compressor and the isolation
shut-- off valve in accordance with applicable lock out/ tag out proce-
dures.
The compressor unit oil circulation system vents automatically.
Remove cover panel (3, siee chapter 9.2).
The pressure gauge on the oil separator tank must indicate zero psig.
Close the vent line ball valve (1).
Close all maintenance doors and reattach all cover panels.
Start the compressor package (see chapter 8.4) and allow to run for approximately 30
seconds.
Stop the compressor package under full load (see chapter 8.4).
Lock the main disconnect in the ”off” position in accordance with ap-
plicable lock out/tag out procedures (example: OSHA CFR 29
§ 1910.147) to ensure the compressor does not restart.
Open the cover panel (2 and 3, see chapter 9.2).
Check the actual pressure on the pressure gauge (2). Open the shut ---off valve (1), let
the pressure on the pressure gauge (2) sink to approximately 40 psig and then close
the shut ---off valve (1) again.
Drain the oil from the oil separator tank and the oil cooler. Proceed as detailed in chap-
ter 9.12.1).
Open the shut ---off valve (1).
Top off the oil. Proceed as detailed in chapter 9.12.2).
Close all maintenance doors and reattach all cover panels.
9.12.4 Procedure for putting back into operation
Refer to chapter 7.8.1 and follow the instructions in section ‘‘Pouring a small quantity
of oil into the air inlet port” .
Refer to chapter 7.8.2 and followthe instructions in section ”Running the compressor
package in idle”.
Refer to chapter 9.9 and follow the instructions in section ‘‘Venting the compressor
package”.
Top off with oil again (see chapter 9.12.2).
Open the shut ---off valve between the compressor package and the air system.
Start the compressor package (see chapter 8.4) and run until working temperature is
reached (see chapter 1.1).
Top off the oil, see chapter 9.11.