Operation; Check List For The Initial Start-Up Of Water Recirculating Chillers; Water Requirements - OMI CHW 09 Manuel D'utilisation Et D'entretien

710.1760.00.02-03A
Install a general isolating switch for the electricity mains close to the chiller. The connecting circuit for the
chiller must be equipped with a circuit breaker and residual current protective device.
You can find information on the electrical power input values for the chiller in the supplement.
Before you connect the chiller to the mains, make sure that the general isolating switch disconnects the
chiller from the electricity mains.
Pass the wires in the flexible polymer cable gland in the control panel (see photo for position) to connect
the power cable. Feed the connecting lead through the aperture in the rear plate (CHW 29 - CHW 149) on
the base of the chiller. Lay the cable on the upright up to the gland on the base of the switch cabinet
(CHW 162 - CHW 3652). Inside the switch cabinet lay the cable in the installation duct up to the main
switch, where it is connected directly.
Check that the screws on the terminal clamps are firmly seated!
Cable inlet
6.

OPERATION

6.1 CHECK LIST FOR THE INITIAL START-UP OF WATER RECIRCULATING
CHILLERS
After extraordinary maintenance work or after turning off the main switch for more than 1 hour, each
start-up should be treated as an initial start-up.
The initial start-up calls for a number additional checks to ensure safe and reliable performance of the
system.
:
Before start-up
Make sure that the pump motor is not blocked: simply move the fan of the pump motor one
quarter of a turn.

WATER REQUIREMENTS

Quality:
Standard chillers require water of mains water quality. If no water of mains quality is available, please
contact the manufacturer for advice.
If additives are being used, make sure that these are suitable for use with the materials and components
of the chiller. Note that the quantity of additives may impair the performance of the chiller, e.g. due to
unsuitable viscosity).
The pipelines of the water circuit may be made of copper, stainless steel or plastic.
General operating conditions:
In standard recirculating chillers the outlet temperature of the cooling medium must be between +5°C
and +20°C. If temperature values of more than +20°C are required for the preset temperature, please
contact the manufacturer for appropriate adaptations.
Conditions during commissioning:
The inlet temperature of the cooling medium should not be more than +25°C.
If temperature values of less than +5°C apply to the preset temperature, antifreeze must be used.
Holes for feeding through the power cable
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26/11/2012