Fig. 15 Inlet valve filling port
1 Remove screw plug
2 Inlet valve
1. Unscrew the filler plug from the inlet valve.
2. Pour the stipulated amount of cooling oil into the airend and replace the filler plug.
Fig. 16 Coupling
1 Compressor block
2 Coupling
3 Safety screen
4 Arrow showing direction of rotation
1. Remove the safety screen 3 .
2. Turn the airend 4 by turning the coupling 1 by hand in the direction indicated by the arrow 2 .
3. Replace the safety screen 3 .
7.7 Checking direction of rotation
The machine is designed for a clockwise phase sequence.
Ideally, the direction of phase rotation should be measured with a phase sequence meter.
Alternatively, the machine can be started very briefly and the rotation direction of the motor cooling
fans noted.
1. Check the direction of phase rotation with a phase sequence meter.
2. If the direction is incorrect, reverse supply phases L1 and L2.
You have no phase sequence meter?
➤ Switch the machine on and off again the moment the drive motor begins to turn.
➤ Compare the direction of rotation of the motor with the arrows on the motor and the airend
casing.
➤ If the direction is incorrect, reverse supply phases L1 and L2.
7 Initial Start-up
7.7 Checking direction of rotation
9_5708 08 USE
Service Manual Screw Compressor
BSD
45
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