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Service and Maintenance M5MSY_(i)
Air Filter
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.
Recess on
main unit
2. Pull out the air fi lters.
• Push a little upwards the tab at the center of each air fi lter, then pull it down.
3. Clean or replace each fi lter.
• When shaking off remaining water, do not wring the fi lter.
4. Set the air fi lter and close the front panel.
• Insert claws of the fi lters into slots of the front panel. Close the front panel slowly and push the panel at
the 3 points. (1 on each side and 1 in the middle.)
• The air fi lter have a symmetrical form in the horizontal direction.
FRONT
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.
Pre Start Up Maintenance
(After Extended Shutdown)
• Inspect thoroughly and clean indoor and outdoor units.
• Clean or replace air fi lters.
• Clean condensates drain line.
• Clean clogged indoor and outdoor coils.
• Check fan imbalance before operation.
• Tighten all wiring connections and panels.
• Check for refrigerant leakage.
Outdoor Models
The design of the M5MSY outdoor series allows servicing to be carried out easily. The removal of the top, front
and side panels makes almost every part accessible.
Under normal circumstances, these outdoor units only require a check and cleaning of air intake coil surface
once every 3 months. However, if a unit is installed in areas subjected to much oil mist and dust, the coils must
be regularly cleaned by qualifi ed Air Conditioner Service Technicians to ensure suffi cient heat exchange and
proper operation. Otherwise, the systems life span may be shortened.
Caution
• Do not charge OXYGEN, ACETYLENE OR OTHER FLAMMABLE and poisonous gases into the unit when
performing a leakage test or an airtight test. These gases could cause severe explosion and damage if exposed to
high temperature and pressure.
• It is recommended that only nitrogen or refrigerant be charged when performing the leakage or airtight test.
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