Installation and Commissioning Guide
Variable Capacity Commercial
55
Installation and Commissioning Guide- Package Ducted Variable Capacity Commercial
Doc. Part No. 0525-076 Ver. 3 210414
OUTDOOR SECTION
Parts
Service Period
Detail of Service Check
Service Methods
1
Mth
3
Mths
6
Mths
1
Yr
2
Yrs
3
Yrs
4
Yrs
5
Yrs
Casing / Panels
and Frames
Visual check for damage, rust
and dust accumulation.
For highly corrosive
environment, wash panels
quarterly with water and neutral
detergent solution. Wax panels.
Repair / re-paint where required.
Insulation
Visual check for insulation
conditions.
Repair / replace insulation
material.
Fan
Visual check for run out of
balance and dust attached
Clean off dust as necessary to
negate possibility of fan running
out of balance
Motor
Ω
Visual check on wiring.
Insulation resistance check
to be carried out annually
Measure insulation resistance
to earth with insulation tester.
Insulation resistance should be
more than 1MΩ.
Heat
Exchanger
Check for clogging by dust.
Check for leaks / damage.
Clean air inlet side as necessary.
Straighten any bent fins using
fins comb.
Condensate
Drain Line
(if available)
Check for obstructions and
free flow of water
Clean to eliminate obstructions/
sludge and check condition of
drain line. Pour water to ensure
free flow.
Compressor
Ω
Check for high / low
pressure. Measure
insulation resistance. Check
compressor for abnormal
noise/vibrations
Measure insulation resistance.
Should be more than 1MΩ.
Refrigeration
Operational
Readings
Make note of operational
reading in test cool/heat
Check operating pressures,
record superheat and subcooling
values
Safety
Devices
Check calibration of safety
devices such as HP and LP
controls, sensors, etc
Check resistance of sensors,
pressure cut in / cut out of
pressure controls
Faults
Check for any previous fault
history on unit.
Investigate any causes for
previous faults, reset fault
history.
Outdoor
Fan Speed
Capacitor
Check for any bulge on the
capacitors & capacitance.
Make it electrically safe prior
to measure the capacitor
capacitance. Measured
capacitance should be with in
the printed tolerances on the
capacitor.
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