Johnson Controls CICM008B21S, Service Manual

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MAINTENANCE
SM-18003
4-13
4.2.10 Removing Liquid Pipe Thermistor, Gas Pipe Thermistor and Expansion Valve Coil
(1) Remove the decorative panel according to Section 4.2.3 “Removing Optional Decorative Panel.”
(2) Remove the bell-mouth and the fan runner according to Section 4.2.4 “Removing Turbo Fan and Fan
Motor.”
(3) Remove the drain pan according to Section 4.2.6 “Removing Drain Pan.”
(4) Remove 5 screws for the partition plate fixing the heat exchanger.
(5) Removing Thermistors
(a) Remove butyl sheet attached to each thermistor.
(b) Remove each thermistor for the gas pipe and the liquid pipe.
NOTE:
Each thermistor is fixed with a thermistor holder.
(6) Removing Expansion Valve
(a) Remove butyl sheet attached to the expansion valve.
(b) Loosen the locknut using a wrench by turning it counterclockwise viewed from the expansion valve
coil.
NOTE:
Remove the expansion valve coil with no pressure applied to it. Otherwise, the pressure would
cause the bellows to pop up. Do not touch the bottom side of the drive part of the expansion valve
coil when using a wrench. Otherwise, the bottom side of the drive part of the expansion valve coil
starts to race and might be damaged.
(7) Turn the locknut to remove the drive part from the expansion valve.
TURN OFF all power source switches.
Partition Plate
Liquid Pipe Thermistor
Gas Pipe Thermistor
Expansion Valve Coil
Expansion Valve
Fixing Screw (6 pcs)
Thermistor Holder
Thermistor Holder
Tool Phillips Screwdriver