52
Installation and Commissioning Guide - Split Ducted Variable Capacity Commercial Outdoor Unit
Doc. No.0525-066 Ver. 6 221012
Installation and Commissioning Guide
Variable Capacity Commercial
20. Maintenance Frequency Checklist
ELECTRICAL
Parts
Service Frequency
Detail of Service Check
Service Methods
1
Mth
3
Mth
6
Mth
1
Yr
2
Yrs
3
Yrs
4
Yrs
5
Yrs
Printed Circuit
Boards
Visual Inspection
Tighten Terminals as necessary on
printed circuit boards
Electrical
Connections
Check all electrical terminals,
mains, communications, etc
Re-tighten if loose.
INDOOR UNIT
Parts
Service Frequency
Detail of Service Check
Service Methods
1
Mth
3
Mth
6
Mth
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.
Drain Pan/
Condensation
line
Check for obstructions and
free flow of water
Clean to eliminate obstructions/
sludge and check condition of pan.
Pour water to ensure free flow.
Filter*
Check for clogging by dust.
Clean Filter
Temperature
Readings
Measure air on and air off
Place temperature probe in return
and supply air of unit.
Ducting
Inspect duct works for air
gaps.
Re-tape any loose ducts.
*
1-3 month, subject to operating conditions and environment.
