Airedale DeltaChill FreeCool 110kW - 1080kW - Manual (Page 152)

DELTACHILL
™
Chillers
152
Chillers
Installation, Commissioning and Maintenance Manual : 7025232 12 / 2013
Commissioning Procedure
Refrigeration
Compressor Record on the commissioning sheet compressor details

Type

Serial numbers

Overload settings
Condenser fans Record on commissioning sheets condenser fan details

Type

Size (kW)

Serial number

Controller type

Running currents
The condenser fans can be operated manually through the controller ensuring correct
operation before the refrigeration circuit is energised.

Check rotation
Operating conditions Record the following operating conditions of the unit at stable conditions.

Suction pressure (bar)

Liquid pressure (Bar)

Discharge pressure (Bar)

Suction temperature (°C)

Liquid temperature (°C)

Discharge temperature (°C)

Superheat (°C)

Sub cooling (°C)

Water return temperature (°C)

Water supply temperature (°C)
Liquid line sight
glass Record the status of the liquid line sight glass

Clear/ flashing

Wet/dry
The sight glass is used to indicate

the condition of the refrigerant in the system

lack of sub-cooling

refrigerant deficiency

Moisture content of the refrigerant
The colour of the sight glass depends on the moisture content of the refrigerant. The
recommended moisture levels of a system should be between 30 and 75ppm.
An indication of green/dry are to be considered as perfect conditions meaning full
protection by the filter drier against effects from moisture.
If the green colour starts to fade, the colour change from green to yellow has begun and
the indicator should therefore be watched carefully. If the colour changes to yellow it is a
clear signal that the capacity of the filer drier is exceeded and should be replaced as
soon as possible.