fiac AIRBLOK 40, Руководство по эксплуатации и обслуживанию, Страница: 17 / 68

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INSTALLATION 4
1
2
3
for SD models:
Power Hp Rated voltage
380/415V 220/415V
Magneto thermal switch Fuse Magneto thermal switch Fuse
40 63A 100A / /
50 80A 125A / /
Note! The parameters of the magneto thermal switches refer to switches type K .
Ensure the installed power in kW is at least double the input of the electric motor, for SD models, the installed
power in kW must be the same as that absorbed by the compressor. All silent rotary screw compressors
avail of Star/Delta starting, which enables the motor to start with as little electrical energy consumption
upon start-up as possible.
The mains voltage must correspond with that indicated on the electrical data nameplate of the machine;
the admitted tolerance must remain /- 6%.
EXAMPLE
:
Voltage, 400 Volt: minimum tolerance 376 Volt - maximum tolerance 424 Volt
The plug of the power supply cable must never be used as a switch but must be plugged into a power
socket that is controlled by an adequate differential switch (magneto thermal switch).
Never use the earth connection instead of the neutral. The earth connection must
be achieved according to the EN 60204 industrial safety standards.
Ensure that the mains voltage corresponds with that required for the correct
operation of the compressor.
It is advised to quarterly verify the serration of feeding cables machine on the magnetotermic.
CHECK THE ROTATION DIRECTION
When connecting the compressor to the electrical mains for the first time ensure that the STOP ALARM is
not triggered, which is pointed out by the red LED lit steady, by a buzzer and by a warning on the display 1
stating:
ROTATION ALARM.
This alarm points out the incorrect connection order of the electrical power supply cables (relative to the
three phases) that causes the incorrect rotation direction of the screw unit. Once the cable connection has
been rectified press the RESET key
3 .
Warning! The incorrect rotation direction for more than 20 seconds will irreparably damage the
compressor.
Note! In SD models, the “ROTATION ALARM” means that the motor of the fan is running
in the wrong direction. This causes the incorrect cooling of the radiator with
consequent “TEMPERATURE ALARM”.