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. 17 Coupling
1 Airend
2 Coupling
3 Safety screen
4 Arrow showing direction of rotation
1. Remove the safety screen 3 .
2. Turn the coupling 2 by hand in the direction indicated by the arrow 4 .
3. Replace the safety screen 3 .
7.7 Check 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, start the machine very briefly and observe the direction of rotation of the motor cooling
fan.
1. Check the direction of phase rotation with a phase sequence meter.
2. If the direction is incorrect, reverse the 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.
7.8 Starting the machine for the first time
Precondition No one is working on the machine,
all access doors are closed,
all removable panels in place and secured.
1. Open the shut-off valve to the compressed air system.
2. Switch on the main power supply disconnecting device.
After the controller has carried out a self-test, the green LED
Power ON
lights.
3. As required
Change the display language as described in chapter 7.10.
4. Press the «LOAD/IDLE» toggle key.
The green LED
IDLE
lights.
7 Initial Start-up
7.7 Check Direction of Rotation
9_5721 06 USE
Service Manual Screw Compressor
ASD T Tri-Voltage
43
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