(1) Disconnect power at the power source.
(2) Remove the top front cover.
(3) Remove the supply air louver.
(4) Remove the mist eliminator.
b. Inspection of installed items.
(1) Check for accumulated dirt. Clean if an accumulation of dirt is evident.
(2) Check fins for dents, bent edges or any condition that would block or distort air flow. Straighten all
damaged fins with a plastic fin comb.
Compressed air used for cleaning purposes will not exceed 30 psi (2.1 kg/cm2).
Do not use steam to clean coil.
c. Cleaning. Clean coil with a soft bristled brush, vacuum cleaner and brush attachment, or use
compressed air at 30 psi or less from the inside of the coil to blow the dirt out. Take care to avoid fin damage.
When using compressed air wear safety glasses or goggles. Dirt can be blown into your eyes.
d. Repair/Replacement. Should a leak or major damage be evident refer to direct support maintenance.
e. Installation of removed items.
(1) Install the mist eliminator. TOP mark must be up and air flow arrows should point away from coil.
(2) Install the supply air louver.
(3) Install the top front cover.
(4) Connect power at power source.
The L1 and L2 solenoid valves are located in the rear (condenser/compressor) compartment. See figure 4-36.
Disconnect input power from the air conditioner before performing maintenance on any part of the
electrical system. The voltages used can be lethal.