2. Switch on the «Controller ON» key.
■ The controller boots up and the operating indicators appear on the display.
■ The
Ready indicator flashes if the controller has no fault.
Starting the engine
➤ Press the «START» key.
■ The machine automatically preheats; the preheating time depends on the ambient temper‐
ature.
■ The engine is started.
■ The machine is in
warm-up phase and runs at IDLE speed.
■ The machine is ready to be switched to LOAD as soon as the specified
airend discharge
temperature (ADT) is attained.
(for temperature settings, see chapter 2.5.4)
■ If the starting sequence fails or is interrupted by pressing the «QUICK STOP» button, the
"re-start inhibit" is activated for 20 seconds. The display shows the remaining time before
another start can be attempted.
Despite "preheating", the engine does not start in cold weather.
The engine is still too cold.
➤ Restart the controller:
➤ Switch off «Controller ON».
➤ Switch on «Controller ON».
➤ Press the «START» key.
The engine again preheats.
Switching the machine to IDLE operation
Precondition Specified value for the
engine coolant temperature (ECT) is attained
➤ Press «LOAD/IDLE» key.
The machine switches to LOAD mode and is ready to deliver compressed air.
Precondition Specified value for the
engine coolant temperature (ECT) is not attained
➤ Press «LOAD/IDLE» key.
■ The load demand is saved.
■ The engine runs up.
■ As soon as the specified
engine coolant temperature (ECT) is attained, the machine auto‐
matically switches to LOAD and is ready for operation.
8.2.4 Setting the compressed air discharge pressure
The compressed air discharge pressure can be modified only when this option is activated in the
machine controller.
(See also the separate user manual for SIGMA CONTROL SMART.)
The compressed air discharge pressure (nominal pressure) can be set when the engine is in stand‐
still (with the controller activated) or during operation (with the machine running).
■ The pressure can only be set at lower than the nominal working pressure of the machine.
8
Operation
8.2
Starting and stopping
No.: 901765 05 USE
Operator Manual Screw Compressor
M114 SIGMA CONTROL SMART
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