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Service Manual
10.3 Maintenance Cautions
If it is necessary to replace components, all the components used shall be made by manufacturer. Otherwise, the supplier shall not
bear the responsibility.
1.Maintenance of Electrical Parts
(1)Replace the power cord and connecting wire with that of the same specification.
(2)When inspecting the circuit with power on, check if there is electric leakage for the metal component such as evaporator or condenser.
During inspection, do not touch the circuit so as to prevent electric shock.
(3)When inspecting the capacitor, ensure that the maintenance area is well ventilated. After conforming there is no refrigeration leakage,
discharge electricity of capacitor.
(4)Before replacing the component, cut of the power supply of the air conditioner.
(5)Cut off the power before disconnecting and connecting the wire. Disconnect the live wire first and then ground wire.
(6)During maintenance, do not remove the protective component. Use the component of same supplier and specification.
(7)When servicing the hermetic parts, cut of the power of the air conditioner before opening the sealing cover. If it is necessary to use
power supply, perform leak test to prevent potential danger.
(8)Do not replace the case which may affect the protective grade.
(9)Ensure that the sealing material is not degraded and that it can prevent entry of flammable gas. The parts used for replacement must
reach the requirement of the suppler.
(1).
Replace electric box
2.Maintenance of Refrigeration System
Before the maintenance, check whether there is any leakage or blockage in the refrigeration system. If yes, it is forbidden to conduct the
maintenance. The unit should be recycled and disposed according to local regulations.
(2).
Replace main board
Maintenance
Concentration
detector
the complete unit
Remove panel
Remove front
The qualified parts
provided by
manufacturer
Concentration
detector
Leakage test for
Leakage
Yes
No
case
Replace
electric box
End
Leakage test for the
complete unit
Leakage
Yes
No
Remove panel
Remove front
case
Remove the
shielding box of
39
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