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www.hlu.eu
06.2019
The following conditions must be met:
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Compliance with the national regulations relating to the public utilities.
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The supply voltage at the place of installation and the mains frequency must correspond to
the values specified on the motor type label.
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The power supply cable must be protected against damage and dimensioned adequately
for the power rating.
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Set the thermal overcurrent relay to the nominal current specified on the motor type label
and follow the instructions given in the motor operating instructions. We reserve ourselves
the right to cancel the motor warranty in the event of failure to comply with this protective
measure.
Make sure that the
rotating direction
is correct. To check the rotating
direction, switch on the motor shortly and compare the impeller rot-
ating direction with the arrow marked on the housing. If the rotating
direction is wrong, change the motor polarity in compliance with the
safety regulations. After reaching the operating speed, measure the
power consumption immediately and compare it to the motor current
specified on the type label.
24 h
after initial commissioning: Check the tightness of the housing
and the quiet run of the fan and re-tighten the screws.
Caution
The fan pipe connections may be performed only using flexible cou
-
plings (compensators).
6.7 Operating modes
The fan is switched on and off via an on-site operating unit provided by the user, or operated via
an on-site supervisory system. It is designed for continuous operation.
The fan may be connected to the supply voltage and switched on
only, when the pipe (on the inlet and outlet side) has been connected
completely.
Installation must be performed according to the connecting diagram in
the motor operating instructions only by adequately trained and qua-
lified personnel.
Operating manual
Centrifugal fans
HF R | RV | MRV
