Operating and Maintenance Manual 09/2019 – part I
Screw compressors
33
8.3.5. Oil level
The proper oil level in the oil tank or screw block is of critical importance for reliable and
correct operation of the compressor.
Maintenance procedure:
- Stop the compressor and close the pressure conduit valve.
- Switch off the power supply and take measures to prevent it from being unintentionally
switched on again by unauthorised persons.
- Verify that the machine has been de-energised (0 V).
- Wait minimum 5 minutes and then open the compressor cover.
- Check that the system has been emptied by slowly unscrewing the oil filler cap (use
protective clothing) (Fig.10). The compressed air can be hot.
- Check the oil level.
- If necessary, fill the oil up to the level that corresponds to 3/4 of the oil level indicator
field height, using the same type of oil.
- Screw the oil fill plug tightly by hand.
- Start the compressor.
- Check the oil fill plug for leaks, and if necessary replace the sealing ring.
Fig. 18 Internal separator.
Fig. 19 Oil level in the compressors.
Seal
Seal
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