Fig. 14 MODULATING control: Setting the shut-off valve
1 Control valve (proportional control)
2 Shut-off valve
➤ Open or close the control valve, depending on the required control mode.
The regulating valve is factory set. The setting should not be changed without consultation
with an authorized KAESER service representative.
7.7 Starting the machine for the first time
Precondition No personnel are working on the machine.
All access doors are closed.
All removable panels are in place and secured.
1. Open the shut-off valve to the air network.
2. Switch on the power supply disconnecting device.
After the controller has carried out a self-test, the green
Controller on
LED is lit continuously.
3. If required:
Change the display language as described in chapter 7.10.
4. Press the «ON» key.
The compressor motor runs up and after a short time the machine switches to LOAD and deliv‐
ers compressed air.
➤ Watch for any faults occurring in the first hours of operation.
➤ After the first 50 operating hours, check all electrical connections and tighten where nec‐
essary.
Does the machine stop when the compressor motor rotates in the wrong direction?
➤ Switch off and lock out the power supply disconnecting device, and verify the absence of
voltage.
➤ Changeover phase lines L1 and L2.
➤ Acknowledge any existing alarm messages and switch the machine on again.
7 Initial Start-up
7.7 Starting the machine for the first time
44
Operator Manual Screw Compressor
SM Tri-Voltage, SIGMA CONTROL 2 9_5875 33 USE
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