Row
-DENCO
Electrical Connection
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications
51
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Power to the unit
must be turned on only after installation work (refrigerant circuit
and electrical) has been completed.
•
All electrical connections
must be carried out by qualified personnel in
accordance with legislation in force in the country concerned
•
Respect instructions
for connecting phase, neutral and earth conductors.
The power line should be fitted upstream with a suitable device to protect against
short-circuits and leakage to earth, isolating the installation from other equipment.
•
Voltage
must be within a tolerance of ±10% of the rated power supply voltage for
the unit (for three phase units, the unbalance between the phases must not exceed
3 %).
If these parameters are not respected, contact the electricity supply company.
•
For electrical connections
, use double insulation cable in conformity with
legislation in force in the country concerned.
•
If local and national standards require installation of a residual current circuit breaker
upstream, use a type B device with threshold Id=300 mA.
Choose a model that features:
– high frequency current filtering
– timer to help prevent disconnection due to the load of stray capacitance on start
up
•
Before starting
the unit, check the tightness of all the electrical connections and
cables on the unit, as these may have come loose during handling and transport.
•
If these devices are not visible
from the electrical panel of the unit, they should be
lockable
•
An effective earth connection is
obligatory
.
The manufacturer cannot be held liable for any damage caused by the failure to
correctly earth the unit.
•
I
n the case of three phase units
, ensure the phases are connected correctly.
9.1.1 Electrical panel
The electrical panel is located inside the unit at the top of the technical compartment
where the various components of the refrigerant circuit are also to be found. To access
the electrical panel, remove the front panel of the unit by undoing the self-tapping
screws. To access the components in the electrical panel and the terminal blocks,
undo the four screws on the panel itself.
Fig. 9-1
•
Before performing any work on the electrical parts, make sure that there is no live
voltage.
•
Check that the mains voltage corresponds to the rated values for the unit (voltage,
no. of phases, frequency) shown on the electrical panel. The power supply voltage
must be between ± 10% of the rated value: operation at voltages outside of these
limits may void the warranty.
PERSONAL injury!
•
Do not use water pipes to earth the unit.