Installation and Commissioning Guide - Split Ducted Indoor Unit
Doc. No.0525-074
Ver. 3 200811
Installation and Commissioning Guide
Split Ducted Indoor Units
36
17. Maintenance Frequency Checklist
Regular servicing of equipment by a qualified technician is recommended every 12 months for residential applications and
every quarter for commercial applications. Regular servicing of your unit helps in maintaining its optimum performance and
reliability.
The following checklist and service periods are provided as a guide only, as some sites may require more
frequent servicing.
Electrical
Parts
Service Period
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 Period
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.
Reading 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 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.
Damper Motors
(if fitted)
Visual inspection of motors
open/closing. Ensure no
obstructions
Drive motors opened and
closed. Ensure correct operation
* Service period for filter cleaning may vary depending on operating time and surrounding environment.
