Installation and maintenance manual
H.I.B Hydac International Page 24 of 36
Version: G/DV
Date: 11.01.2023
10.3 Electrical connection
The cooling device is designed in accordance with the electrical circuit diagram (See annex). The
direction or rotation of the axial fan is to be checked. If the direction of rotation is wrong please
switch over the phases on the mains lead (Switch over L1 and L2).
It must be safeguarded in accordance with the current consumption of the chiller
provided. See technical data sheet.
Mains voltage and mains frequency must match the nominal values stated on the
device´s type plate.
The chiller must be integrated into the EMERGENCY–STOP circuit on the customer
side and can thus be switched off without voltage.
Work on electrical systems may only be performed by experts. The relevant local
safety regulations are to be observed.
11.0 Start up and Operation
11.1 Preparation
The unpacked unit has to be left in operating position for some 24 hours prior to start up so
that the refrigerant may collect after transport.
The owner must provide protection according to the applicable standards by means of a
temperature fuse gL/gG and an RCD (envisaged 300mA, ≥ type F). All other data on selection
can be found in the circuit diagram. The local regulations and directives must be adhered to.
The owner must provide sufficient lightning protection, rotating field protection and
overvoltage protection. The local regulations and directives must be adhered to here.
Creating a main power supply.
As a rule, work on the electrical system must be carried out by expert personnel; the
valid wiring diagram and the VDE guidelines must be observed.
Compare the mains voltage at side with the nameplate of the unit.
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