![background image](http://html1.mh-extra.com/html/kaeser/aircenter-sx-3/aircenter-sx-3_service-manual_3173165079.webp)
Draining the oil from the cooler
Fig. 34 Changing the cooling oil, oil cooler
1
Oil cooler
2
Hose coupling (oil drainage)
3
Shut-off valve
6
Male hose fitting
7
Shut-off valve
1. Have an oil receptacle ready.
2. With the shut-off valve closed, insert the male hose fitting
6
into the hose coupling
2
.
3. Place the end of the maintenance hose in the oil receptacle and secure it in place.
4. Open the shut-off valve
3
.
5. Slowly open the shut-off valve
7
and allow cooling oil and air to escape completely until the
pressure gauge reads 0 psig.
6. Close the shut-off valve
2
and unplug the male hose fitting.
➤ Dispose of used oil in accordance with environmental protection regulations.
Filling with oil
1. Slowly unscrew the filler plug
4
2. Fill with cooling oil.
3. Check the filler plug and ring seal for damage and screw the plug back in again.
Start the machine and carry out a trial run
1. Close all access doors, replace and secure all removable panels.
2. Open the user's shut-off valve between the machine and the compressed air network.
3. Switch on the power supply and reset the maintenance interval counter.
4. Start the machine and check the oil level again after about 10 minutes, topping up if necessary.
5. Switch off the machine and check visually for leaks.
10.15 Changing the oil filter
The machine must be isolated from the compressed air network and completely vented before
undertaking any work on the pressure system.
All the cooling oil has run out of the filter 1–2 minutes after shutting down. A cooling oil receptacle is
not needed.
10 Maintenance
10.15 Changing the oil filter
Number: 9_6945 01USE
Service manual Screw compressor
Aircenter SX 3/7.5 SIGMA CONTROL BASIC
69