ClimaCool IOM AR2 SERIES - Manual (Page 29)

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compressor has correct rotation . Use pressure gauges to
verify proper rotation . Always use proper electrical safety
precautions .
4 . Slowly close the chiller water inlet isolating valve and note
that the flow switch stops the machine . Note the flow rate at
which this occurs . If too much flow is lost before chiller is
stopped, reset switch setting . The flow switch should be set so
the chiller shuts down when the flow rate to each evaporator
and condenser water circuits drops below 60% of rated ARI
full load conditions (indicating a 10°F temp . change through
both the evaporator and condenser heat exchangers) .
5 . Repeat the tests of all other safety interlocks which may be
connected .
6 . The anti-freeze thermostat for each module should be set to
trip when the leaving chilled water temperature drops below
38°F .
Start Up
An anti-short cycle timer protects the chiller and there will be a
delay before the controller will allow the compressors to start .
1 . If the chilled water temperature is above the normal operating
level, all load should be removed from the chilled water
system and the suction temperature should be monitored to
prevent high current draw .
2 . If the condenser water temperature is below the normal
operating level, ensure that the condenser water temperature
control is in the correct position . Start Up
3 . Re-install all fuses and set the controller .
4 . When all temperatures are within operating limits, all high
and low pressure safety switches should be tested for each
refrigeration system .
5 . The condenser temperature controller should be checked .
Once stable conditions have been achieved, the refrigeration
system’s high and low pressures, compressor amp draw,
voltage Input level, and water system temperatures and
pressures should be logged for each chiller module separately .
6 . Check that oil level is between 1/3 and 1/2 of the sight glass .
See page 51, Oil Levels .
7 . The action of the controller should be checked for correct
operation and control .
Mechanical and General
All covers, panels and doors should be in place and secured .
Start Up Documentation
All start-up paperwork and documentation must be submitted to
ClimaCool .
Start Up