Fig. 33 Changing the compressor oil
1
Oil filler port
2
Oil sight glass
3
Oil drain plug
Draining the oil
1. Remove the crankcase vent from the oil filler.
2. Prepare a oil receptacle.
3. Remove the drain plug and allow oil to drain into the receptacle.
4. Replace the drain plug after making sure the gasket is not damaged.
Dispose of the old oil in accordance with valid environmental protection regulations.
Filling with compressor oil
1. Fill with new oil to the maximum mark on the oil sight glass.
2. Replace the crankcase vent.
3. Start the machine and check the oil level again after about 2 minutes, topping up again, if nec‐
essary.
4. Switch off the machine and check for leaks.
The compressor oil has become milky white?
It is contaminated with condensate.
➤ Change the oil immediately.
➤ Contact immediately KAESER SERVICE if condensate is detected in the oil.
10.11 Check the pressure relief valve
➤ To test the pressure relief valve, it must be removed from the machine by a
KAESER SERVICE technician and installed on a test rig.
Further information See chapter 2.7 for the activating pressure of the valve.
10.11.1 Pressure relief valves on the cylinder head, collecting pipe and air cooler
To prevent the pressure relief valve's seat from sticking, ensure that the valve is regularly activated
- once a year at the very least.
10 Maintenance
10.11 Check the pressure relief valve
No.: 9_5753 24 E
Assembly and operating manual 2-stage piston compressor
EPC-2-G
71
