Airedale DeltaChill FreeCool 110kW - 1080kW - Manual (Page 149)

Chillers DELTACHILL
™
Chillers
149
Installation, Commissioning and Maintenance Manual :7025232 12/ 2013
Commissioning Procedure
General To be read in conjunction with the commissioning sheets provided.
CAUTION Please ensure all documents have been completed correctly and return to Airedale
Technical Support immediately to validate warranty.
Pre Commissioning Checklist
CAUTION ALL work MUST be carried out by Technically Trained competent personnel.
The equipment contains live electrical and moving parts, ISOLATE prior to
maintenance or repair work.
All pipework is complete and insulated where necessary.
Refrigerant standing
pressure The refrigerant charge is to be checked to ensure correct refrigerant type. This is done
by measuring the liquid line standing pressure and temperature. This can then be
compared to refrigerant data tables or Comparator.
Standing pressures can only be measured in the liquid state.
The standing pressure of a system can identify if non condensable are present in the
system.
IMPORTANT Due to the boiling point of R410A refrigerant it is highly recommended that
suitable Personal protective equipment (PPE) is used.
Mains Power Mains power supply connected to chiller and electrically tested.
(The recommended mains fuse supply is indicated on the serial plate).
Permanent supply Each chiller also requires a 16 Amp single phase permanent supply (L4) as shown on
the electrical wiring diagrams. Permanent power supply connected to chiller and
electrically tested.
Pump Interlock 24Vac interlock cable for flow switch and/or pumps are sized correctly in order to
eliminate voltage drops. If the pump interlock is not wired back to the chiller then
the visit will be aborted and the unit left isolated.
Flow Switch A “paddle type” flow switch is fitted, wired to the chiller control panel and tested. This
should be fitted on the outlet of the evaporator & before isolation valves.
Chiller water flow rate is correct with all air removed. The required flow rates can be
obtained from SERVICE at AIREDALE. An Airedale technician may request water-
balancing data prior to commencement of commissioning. To include condenser water
flow rates where applicable
Glycol type Please advise Glycol type and content
Adequate heat load Adequate heat load is available in order to maintain the required water temperatures
during commissioning.
Binder points Binder points should be fitted to both the flow and return pipework adjacent to the chiller
evaporator.
Water strainer A water strainer must be fitted to the inlet side of the chiller evaporator. Failure to do so
may result in severe damage and will void the AIREDALE warranty.
Crankcase heater The power supply to the compressor crankcase heaters must be switched on at least 24
hours prior to AIREDALE technicians’ attendance. Please ensure the relevant internal
MCB (MCB 3) is switched on and proven.