10.14 Changing the cooling oil
The machine must be isolated from the compressed air network and completely vented before
undertaking any work on the pressure system.
Drain the oil completely from the oil separator tank and oil cooler. Always change the oil filter
and oil separator cartridge when changing the oil.
Compressed air helps to expel the oil. This compressed air can be taken either from the compressor
itself or from an external source.
An external source of compressed air is necessary in the following cases:
■ The machine is not operational.
■ The machine is to be restarted after a long period of standstill.
Material Cooling oil
Cooling oil receptacle
The maintenance hose with hose coupling and shut-off valve is stowed beneath the oil separator tank.
WARNING
There is risk of burns from hot components and oil.
➤ Wear long-sleeved clothing and gloves.
Fig. 33 Changing the cooling oil, oil separator tank
1
Hose coupling (air cooler venting)
2
Pressure gauge
3
Hose coupling (oil separator tank venting)
4
Oil filler port with plug
5
Cooling oil level indicator
6
Male hose fitting
7
Shut-off valve
A
Shut-off valve open
B
Shut-off valve closed
8
Maintenance hose
9
Hose coupling (oil drain)
10
Shut-off valve (venting line)
11
Shut-off valve (oil drain)
10 Maintenance
10.14 Changing the cooling oil
Number: 9_6945 01USE
Service manual Screw compressor
Aircenter SX 3/7.5 SIGMA CONTROL BASIC
67
