Operating instructions for S 40-3...S 150-3 series screw compressors Page 65
Maintenance 6.4 Maintenance work at fixed service intervals
2. Close ball valve at the compressed air outlet.
3. Remove the cover on the maintenance side.
4. Vent the compressor fully (as described at the beginning of this section).
5. Wait approx. 3 minutes to allow the oil to settle.
6. Unscrew dirty oil filter (3) by hand or with a strap wrench in the direction
shown by the arrows on the oil filter (see illustration below).
Æ Catch the draining oil and dispose of it properly in line with environmen-
tal regulations.
Fig. 6.6: Changing the oil filter
7. Fill the new oil filter (3) with compressor oil.
8. Lightly oil the seal on the new oil filter.
9. Screw in new oil filter by hand.
10.Put the cover back on on the maintenance side
11.Open ball valve at the compressed air outlet.
12.Switch the compressor on and let it heat up until it reaches the operating
temperature.
WARNING: Risk of injury!
Danger of burning due to hot oil!
Wear protective gloves while working!
WARNING!
Do not use tools to screw on the new oil filter!
You might damage the oil filter or its sealing ring.
A hand-tight fit of the oil filter is sufficient.
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