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11. Maintenance
Serene Wall Hung Split System
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
& 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 Megger.
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 &
free flow of water.
Clean to eliminate obstructions/
sludge & check condition of pan.
Pour water to ensure free flow.
Filter*
Check for clogging by
dust.
Clean / Replace Filter.
Temperature
Readings
Measure air on & air off.
Place temperature probe in return
& supply air of unit.
*Service period for filter cleaning may vary depending on operating time & surrounding environment
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.
Magnetic
Contactor
Check for loose terminal
connections.
Tighten electrical terminals.
Remove any dust.
