EVAPORATOR COIL, MALE COUPLING HALF AND EXPANSION VALVE - continued

TM9-4120-423-14&P

Using screwdriver, remove the three screws that hold the three clamps that support the expansion

valve and expansion valve capillary line.

Using wrench, carefully disconnect the low and high condenser to evaporator Refrigerant R-22

metal hose line connectors from the coupling halves. (See WP0091).

Using wrench, remove the two each jam nuts and gasket seals from the inside of the access area.

WARNING

When handling coils, wear gloves to avoid cuts and reduce fin damage on the coil.

Using screwdriver, remove six screws and washers while supporting the evaporator coil.

Using gloves to protect your hands and coil fins, carefully lift the coil and tubing up and

out of the unit.

Unwrap insulation tape (black cork tape) from joints that are to be debrazed and from the

sensing bulb.

Loosen the two screws and nuts in the bulb straps that attach the sensing bulb to the

suction line, and pull the bulb out of the straps. Take care to note the position (center top

of suction line) of the bulb.

CAUTION

Use care to not damage or kink the capillary.

Note exact position of expansion valve on Refrigerant R-22 line.

Wrap wet rags around expansion valve body and distributor tubes.

Using torch, debraze and separate the distributor, elbow and equalizer line tubing from the

expansion valve. See WP0072.

Remove expansion valve.

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.

Rinse thoroughly in clear water.

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