1. Unscrew the filler plug 4 slowly.
2. Top up to bring the oil to the correct level.
3. Replace the plug sealing ring if necessary and screw in the plug.
Start the machine and carry out a test 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 system.
3. After about 10 minutes, check the oil level again and top up if necessary.
4. Switch off the machine and visually check for leaks.
10.15 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 following components:
■ oil separator tank
■ oil cooler
■ airend
■ internal heat recovery system (option W1/W2/W3)
➤ Always change the oil filter and oil separator cartridge when changing the oil.
➤ Contact KAESER Service representative if condensate is detected in the cooling oil. It is
necessary to adjust the airend discharge temperature to suit operating conditions.
Compressed air helps to expel the cooling oil. This compressed air can be taken either from the
machine 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 needed for venting is stowed beneath
the oil separator tank.
WARNING
There is risk of burns from hot components and oil.
➤ Wear long-sleeved clothing and gloves.
10 Maintenance
10.15 Changing the Cooling Oil
74
Service Manual Screw Compressor
ASD T Tri-Voltage 9_5721 06 USE
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