Wartung.pm6.5 - USA
Page 5.16
Maintenance
BOGE Operating instructions for S 40-2...S 341 / SF 40-2...SF 220 series screw compressors
Oil change
Change: – After 9000 operating hours,
however, at the latest after two years.
– For other types of oil the appropriate oil change intervals
must be complied with.
NOTICE:
The service life of the oil, the oil filter and oil separators is reduced under the
following conditions:
– When the compressor is operated at extreme ambient temperatures.
– When the intake air is extremely soiled.
Building up a pressure cushion
The combined compressed air / oil receiver is located at the lowest point of
the system. Therefore, a light pressure cushion (approx. 30 psig system
pressure) must be applied to drain the oil. This pressure cushion forces the
oil through the drain hose into a suitable collecting basin.
DANGER: Risk of injury!
Switch off the main switch and secure it against unintentional switch-on.
– Screw cap nut onto the vent hole of the solenoid valve on the suction
controller by hand.
The cap nut (M8) is located in the storage compartment of the switch
cabinet.
CAUTION!
Never use any tools to screw on the cap nut!
Damage af the solenoid valve might result.
– Switch on the compressor again and allow it to start up.
If necessary, let out some air from the compressed air receiver until the
switch-on pressure of the compressor is reached.
– Switch off the compressor at approx. 30 – 44 psig system pressure using
the EMERGENCY-OFF-button.
DANGER: Risk of injury!
Switch off the main switch and secure it against unintentional switch-on.
– Slowly loosen cap nut until compressed air escapes.
– Let off compressed air until the system pressure gauge shows a residual
pressure of approx. 30 psig.
– Tighten cap nut by hand.
DANGER: Risk of injury!
Danger of burning due to hot oil!
Draining old oil
– Place the oil drain hose into a suitable container .
– Slowly open the stop valve.
The pressure cushion forces the oil into the container.
– Once the compressed air/oil receiver has been completely drained, close
the stop valve.
– Remove the cap nut from the solenoid valve.
5.3 Regular maintenance work
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