8 Operation
8.1 Switching On and Off
Always switch the machine on with the «ON» key and off with the «OFF» key.
The power supply disconnecting device has been installed by the user.
Fig. 19 Switching on and off
1 LED
Machine ON
(green)
2 Key «ON»
3 Key «OFF»
8 LED
Controller ON
(green)
8.1.1 Switching on
Precondition No one is working on the machine,
all access doors and panels are closed and secure.
1. Switch on the main power supply disconnecting device.
After the controller has carried out a self-test, the green LED
Power ON
lights.
2. Press the «ON» key.
The green LED
Machine ON
lights.
If a power failure occurs, the machine is not prevented from automatic re-starting.
It can re-start automatically as soon as power is restored.
Result The compressor motor starts as soon as the network pressure is lower than the setpoint value (cut-
out pressure).
8.1.2 Shutdown
1. Press the «LOAD/IDLE» key.
The machine switches to IDLE and the
IDLE
LED flashes.
2. After allowing the machine to IDLE for at 20 minutes:
press the «OFF» key.
The
Machine ON
LED extinguishes.
The machine is ready for operation. You can switch the machine on again.
8 Operation
8.1 Switching On and Off
46
Service Manual Screw Compressor
ASD T Tri-Voltage 9_5721 06 USE
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