Airedale DeltaChill FreeCool 110kW - 1080kW - Manual (Page 150)

DELTACHILL
™
Chillers
150
Chillers
Installation, Commissioning and Maintenance Manual : 7025232 12 / 2013
Commissioning Procedure
Electrical
Electrical
connections Ensure all electrical connections are tight and correctly terminated.
External fuses/
MCB’s Check that the correct electrical supply rating is available to the unit
Electrical continuity Before electrical power is applied to the unit. Electrical continuity checks must be carried
out on the 3 phase power.
Phase rotation Check that the electrical phase rotation is correct. Components in the unit may
malfunction with incorrect phase rotation.
Electrical earthing Check that the unit is correctly earthed.
Remote on/off To ensure that the unit does not start whist doing the pre-commissioning checks the
remote on/off should be in the OFF state.
Voltage Measure the voltage at the following points and record on the commissioning sheet

Voltage at busbar

Dedicated power supply

Voltage at permanent supply

Control voltage at transformer (min 22.5V, max 25V)
The vo
ltage measurements should be carried out with the unit MCB’s turned off.