Maintenance
10 --- 67
Manually venting the compressed air cooler
With the shut---off valve closed, insert the male hose fitting (6) into the hose coupl-
ing (1).
Open the shut---off valve (7) slowly to release pressure.
Withdraw the male hose fitting and close the shut---off valve.
Topping up the cooling oil
Open the filler plug (4) slowly.
Top up the cooling oil.
Replace the plug gasket if necessary and re---insert the plug.
Start the machine and carry out a test run
Close all access doors; replace and secure all removable panels.
Open the user’s shut---off valve between the machine and the air main.
Start the machine and allow it to idle for at least one minute. Then switch to LOAD.
After about five minutes, check the oil level and top up if necessary.
Carry out a visual check for leaks.
10.13 Changing the Cooling Oil
Material: Cooling oil
Oil catchment container
Danger of burns from hot components and oil.
Wear long---sleeved clothing and gloves.
Work carefully.
Dispose of the old oil in accordance with local environment protection re-
gulations.
Drain the oil thoroughly from:
Oil separator tank
Oil cooler
Airend
The heat recovery system (if installed).
Compressed air helps to expel the oil.
This pressure can be generated by the machine itself.
Alternatively, an external source of compressed air can be used.
External air is necessary if:
the machine is not operational,
the machine is to be restarted after a long standstill period.
CAUTION
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