Operation; Check List For The Initial Start-Up Of Water Recirculating Chillers; Water Requirements - omi CHW 09 Manual De Uso Y Mantenimiento

710.1760.00.01-00
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.
The glycol must contain anti-corrosion additives. In the standard configuration, the CHW series, ethylene
glycol in concentrations of 20% up to a maximum of 34% may be used for minus temperatures down to
–10°C. Add antifreeze for ambient temperatures of approx. ±0°C.
When antifreeze is used, it is important to make sure that the current consumption remains within the
data indicated on the identification plate on the motor.
Holes for feeding through the power cable
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22/07/2009