Electrical Connections; Water Connections - Hitecsa EQPL-B 4360 Manual Del Operador

II.7

ELECTRICAL CONNECTIONS

DANGER!
Install a general automatic switch with
characteristic delayed curve, of adequate capacity
and interruption power, in a protected area near the
unit (the device must be able to interrupt the
presumed short circuit current, whose value should
be determined on the basis of the system
characteristics). Earth connection is compulsory by
law to ensure user safety while the machine is in
use.
DANGER!
The electrical connection of the unit must be
carried out by qualified personnel, in compliance
with the regulations applicable in the country where
the unit is installed. Non-conforming electrical
connections releases HITECSA from liability
concerning damage to objects and persons. In
making the electrical connections to the board,
cables must be routed so that they do not touch the
hot parts of the machine (compressor, flow pipe
and liquid line). Protect the wires from any burrs.
DANGER!
Check the tightness of the screws that secure the
conductors to the electrical components on the
board (vibrations during handling and transport
could have caused them to come loose).
IMPORTANT!
For the electrical connections of the unit and
accessories, refer to the relative wiring diagram.
Check the voltage and mains frequency, which should be within the limit
of 400-3-50 ± 6%. Check the phase unbalance: it must be less than 2%.
Example:
L1-L2 = 388V, L2-L3 = 379V, L3-L1 = 377V
Average of values measured = (388+379+377) / 3 = 381V
Maximum deviation from the average = 388-381 = 7V
Unbalance = (7 / 381) x 100 = 1.83 % (acceptable as it is within the
envisaged limit).
DANGER!
Operation outside the limits could affect correct
machine operation.
The safety door interlock automatically prevents electric power being
fed to the unit if the cover panel over the electrical panel is opened.
After opening the front panel of the unit, feed the power supply cables
through the cable clamps in the external panelling and then through the
ducts at the base of the electric board.
SECTION II :: INSTALLATION AND MAINTENANCE
The electrical power supplied by the single-phase or three-phase line,
must be taken to the main isolator switch. The power supply cable must
be flexible with a polychloroprene sheath not lighter than H05RN-F: for
the section, refer to the following table or wiring diagram.
B-S T-Q
4360 4385 mm²
4390 4475 mm²
4435 4460 mm²
5500 5525 mm²
6540 6570 mm²
6590 6625 mm²
6635 6665 mm²
6670 6700 mm²
7730 7760 mm²
8790 8820 mm²
8830 8860 mm²
8870 8920 mm²
(*) Cable type FG7
The earth conductor must be longer than the other conductors in order
to ensure that if the cable fastening device should become slack, it will
be the last to be stretched.
II.7.1.1 Remote management using accessories
supplied loose
It is possible to remote control the entire machine by linking a second
keyboard to the one built into the machine (KTR accessory).
Use and installation of the remote control systems are described in the
Instruction Sheets provided with the same.
II.8

WATER CONNECTIONS

II.8.1 Connection to the system
IMPORTANT!
The layout of the water system and connection of
the system to the unit must be carried out in
conformity with local and national rules in force.
IMPORTANT!
We recommend installing isolating valves that
isolate the unit from the rest of the system. Mesh
filters with a square section (longest side = 0,8 mm),
of a suitable size and pressure drop for the system,
must be installed. Clean the filter from time to time.
○ The units are designed for indoor or outdoor installation and for a
hydraulic circuit at atmospheric pressure.
○ The unit is provided with Victaulic type hydraulic connections on the
water inlet and outlet of the air conditioning system. It is also fitted with
carbon steel fittings for welding.
○ It is recommended to install control valves on the unit's inlet and
outlet connections.
○ To protect the chiller from debris, we recommend installing an inlet
water filter (square mesh filter between 0.8 and 1.6 mm) of an adequate
size with suitable pressure drop. Damage caused by the entrance of
debris is not covered by the warranty.
○ The unit should be positioned to comply with the minimum
recommended clearances, bearing in mind the access to water and
electrical connections.
○ The unit can be equipped with anti-vibration mountings on request
(SAM).
○ Shut-off valves must be installed that isolate the unit from the rest of
the system. Elastic connection joints and system/machine drain taps
also need to be fitted.
○ Correct installation and positioning includes levelling the unit on a
surface capable of bearing its weight.
69
2 x 70 (*) 1 x 70 1,5
2 x 70 (*) 1 x 70 1,5
2 x 95 (*) 1 x 95 1,5
2 x 95 (*) 1 x 95 1,5
2 x 120 (*) 1 x 120 1,5
2 x 120 (*) 1 x 120 1,5
2 x 150 (*) 1 x 150 1,5
2 x 185 (*) 1 x 185 1,5
2 x 185 (*) 1 x 185 1,5
2 x 185 (*) 1 x 185 1,5
2 x 185 (*) 1 x 185 1,5
2 x 185 (*) 1 x 185 1,5