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6. Start-up
6.1. Start-up preparation
Each compressor unit is tested in the factory and carefully inspected to ensure proper machine
performance and meeting the specifications declared.
Strictly obey the following rules before starting the machine for the first time:
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Get thoroughly familiar with the compressor Operating and Maintenance Manual and the
Warranty Book.
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Check the power cables for possible damage, short-circuits and electrical breakdowns. Only
authorised / qualified electrician can perform work on electrical equipment and components.
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Make sure the power supply voltage is correct and the required protections are in place; do not
connect the compressor to a power source of different voltage than that specified in the
Operating and Maintenance Manual.
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Connect the phase conductors so that the
rotation direction is as indicated on the screw
assemble.
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Check the oil level in the screw block, top it up, if necessary.
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Connect the compressor to the compressed air system with a flexible conduit.
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A compressed air receiver tank is necessary for proper compressor operation (min. 2500l).
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When the compressed air receiver tank is located outside the compressor room, install the
pressure gauge, connected to the tank or pressure conduit supplying the tank, in a visible
location.
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Do not operate the compressor above the maximum operating pressure that is given on the
identification plate. It is not recommended to operate the compressor at the delivery pressure
below 0.5 MPa. Please contact our technicians when it is necessary to set that overpressure.
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Check if all doors/covers are closed.
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Open the valve that shuts off the compressor from compressed air system.
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Check the “EMERGENCY STOP” button position.
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Switch on the compressor power supply.
When the compressor and compressed air system condition is checked, you can proceed with
starting the compressor.
To start the compressor, press the "START" button on the control panel. The compressor motor
starts working and depending on the overpressure in the compressed air system, the machine
switches to the loaded operation mode or, if the overpressure in the compressed air systemis
higher than the minimum start pressure, it switches to the stand-by mode and starts again after
its drop.
Incorrect rotation direction of the screw block rotors for more than 5 seconds will damage
the screw compressor.
