36
/11.2015/
G17D
EN
Route the electric cable into the electrics box from below and connect the hree phases to the main switch, the PE
conductor at the PE rail and the neutral conductor at the neutral terminal, in accordance with the wiring diagram
(part of the unit documents) and secure these cables by the pull relief screw.
Make sure that the phase rotation is correct, the rotating field must turn right !
The scroll compressor is dependent on correct phase rotation. The sense of rotation will be checked at the factory
before dispatch. On site, if the rotating field of the compressor is incorrect, it must be corrected by changing two
phases of the power supply at the isolator. An inverse rotating field can be detected by a raised compressor noise
level and results in overheating and destruction of the compressor after several hours of operation.
For use of leakage-current (FI) circuit breakers, EN 50178 5.2.11.2 must be taken into account. Only
type B pulse-current FI circuit breakers are permitted. FI circuit breakers do not provide protection
against bodily harm during operation of the unit or frequency converters.
Make sure that the power supply corresponds to the indications on the rating plate and that the tolerances according
to the "Application limits" are not exceeded.
In addition to this, the
asymmetry of phase
between the conductors may amount to
2% maximally
. The asymmetry
of phase is determined by measuring the voltage difference between the phase conductors. The average value of
the voltage differences may not exceed 8 V.
