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Service & Maintenance MWM-J_(ii)
Service & Maintenance
Warning
• Disconnect from main supply before servicing the air conditioner.
• The unit is designed to give long life operation with minimum maintenance required. However, it should be regularly
checked and the following items should be given due attention.
Components Maintenance Procedures Period
Air Filter
(Indoor Unit)
1. Remove any dust adhering to the fi lter by using a vacuum cleaner
or wash in lukewarm water (below 40˚C) with a neutral cleaning
detergent.
2. Rinse the fi lter well and dry before placing it back onto the unit.
3. Note: Never use gasoline, volatile substances or chemicals to
clean the fi lter.
At least once every 2
weeks.
More frequently if
necessary.
Indoor Unit 1. Clean any dirt or dust on the grille or panel by wiping it with a
soft cloth soaked in lukewarm water (below 40˚C) and a neutral
detergent solution.
2. Note: Never use gasoline, volatile substances or chemicals to
clean the indoor unit.
At least once every 2
weeks.
More frequently if
necessary.
Condense Drain
Pan & Pipe
1. Check the cleanliness and clean it if necessary.
2. Check the condensate water fl ow.
Every 3 months.
Indoor Fan Check if there is any abnormal noise. If necessary.
Indoor / Outdoor
Coil
1. Check and remove the dirt between the fi ns.
2. Check and remove any obstacles which hinder air fl ow through
the indoor or outdoor.
Every month.
Power Supply 1. Check the running current and voltage for indoor and outdoor
unit.
2. Check the electrical wiring and tighten the wire onto the terminal
block if necessary.
Every 2 months.
Every year.
Compressor No maintenance needed if refrigerant circuit remains sealed. How-
ever, check for refrigerant leak at joint and fi tting.
Every 6 months.
Indoor Models
1. Open the front panel
• Hold the panel at the recesses on the main unit
(2 recesses on right and left sides) and lift it until
it stops.
2. Remove the front panel
• While lifting the front panel further, slide it to the
right and pull it to the front side. The left rotating
shaft is detached. Slide the right rotating shaft to
the left and pull it to the front side to remove it.
3. Attach the front panel
• Align the right and left rotating shafts of the front
panel with the grooves and push them all the
way in.
• Gently close the front panel. (Push both ends
and the center on the front panel.)
Rotating
shaft
Recess on
main unit
Caution
• Don’t touch the metal parts of the indoor unit. It may cause an injury.
• When removing or attaching the front panel, use a robust and stable stool and watch your steps carefully.
• When removing or attaching the front panel, support the panel securely with hand to prevent from it falling.
• For cleansing, do no use hot water above 40°C, benzene, gasoline, thinner, nor other volatile oils, polishing
compound, scrubbing brushes, nor other hand stuff.
• After cleaning, make sure that the front panel is securely fi xed.
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