FUSIBLE PLUG

TM5-4110-234-14

TO 40R7-5-7-1

(4)

Be sure dry nitrogen is flowing through the system, then position the valve body and braze the joints of

the refrigerant tubing to the valve body.

(5)

Be sure that the inside surfaces of the valve body are clean.

(6)

Disconnect the nitrogen source and connect the flare nuts to the receiver outlet valve.

(7)

Place the seat disc into the valve body with the smaller diameter end facing up.

(8)

With the other hand, place the enclosing tube over the plunger, making sure the gasket is in position.

(9)

Install the enclosing tube lock nut and tighten to 20 ft/lbs (27.1 Nm).

(10) Install the coil and nameplate and secure with the lock nut.

(11) Install the connector. (May be removed from old solenoid valve if not damaged.)

(12) See tags and wiring diagram figure 4-5 or 4- and connect wires.

(13) Replace the drier. (See para 5-19).

(14) Leak test the valve, all newly connected tubing connections and all connections in the area of the newly

brazed joints per paragraph 5-7.

(15) Evacuate and charge the system as directed in paragraphs 5-10 and 5-11a.

(16) Close all access doors.

5-18.

FUSIBLE PLUG See figure 5-5 or 5-6.

Removal.

(1) Discharge the system (para 5-8).

(2) Unscrew the threaded fusible plug, which is located on the top center portion of the receiver tank.

(3) Examine the plug. If it is blown, replace it with a new one.

Installation.

(1)

Screw the fusible plug into the receiver.

(2)

Replace the drier. (See para 5-19).

(3)

Leak test the newly installed plug and drier connections per paragraph 5-7.

(4)

Evacuate and charge the system per paragraphs 5-10 and 5-11b.

5-19.

FILTER-DRIER See figure 5-5 or 5-6.

The filter-drier assembly is a metal container which contains desiccant dehydrating and filtering media through

which the liquid refrigerant must flow. A new filter-drier must be installed in the refrigerant system whenever the system

has been opened. Replacement of the dehydrator should be the final maintenance action before evacuating and charging

the system.

Removal. If system has already been opened go to step (3).

5-19