Airedale Ultima Compact Condensing Unit 30kW - 450kW - Manual (Page 31)

Condensing Units ULTIMA COMPACT
Condensers & Condensing Units
31
Installation & Maintenance : 6259675 IM V1.4.0 10/2013
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Commissioning Procedure
COMMISSIONING
CHECKLIST The following should be carried out with a load on the system, otherwise the unit is likely
to short cycle. The following tests are to be carried out on 1 circuit at a time.
 Switch the door interlocking MCCB to the ON position but again only on the circuit
which is to be tested.
 Adjust the temperature supply and return set points to match the
system requirements.
To switch the unit ON, use the microprocessor keypad as follows:
Press
Prg
, press , press , press & finally .
 Check pressures at suction and discharge ports for correct phase rotation.
CAUTION If no differential pressure occurs, isolate immediately.
RECORD  Measure and record the compressor amps once the compressors are fully loaded
and at the unloading stage.
 Measure and record full speed amps of each condenser.
CAUTION The microprocessor LP setting is adjustable via the microprocessor keypad,
factory set to 3.2BarG.
RECORD  Check the liquid line sight glass is clear and dry.
 Check the superheat setting adjusts the expansion valve to maintain a superheat
setting of 5 – 8°C at all operating loads.
 Check and record the following:
Suction and discharge pressures
Liquid, discharge and suction line temperature
 Ensure the above are all within the design parameters.
 Repeat as follows for each circuit:
 To switch the unit OFF, use the microprocessor keypad as follows:
Press
Prg
, press , press , press & finally .
 To switch the unit ON, repeat above.
The unit is now commissioned and will provide many years of trouble free operation
providing the following maintenance schedule is followed.