DISCHARGE PRESSURE REGULATING VALVE

TM5-4110-234-14

TO 40R7-5-7-1

(6)

Lift condenser and shroud from the frame. Use gloves when removing coil to avoid cuts from and/or

damage to the fins.

b. Repair. If serious damage or if a leak should be evident in any part of the coil, notify general support

maintenance.

Installation.

(1) Install condenser coil and shroud to the frame and secure them with 8 each cap screws and lock nuts.

(2)

Braze the inlet and outlet connections.

(3)

Tighten the flare nut to the receiver inlet valve and remove the nitrogen source connection.

(4)

Replace the drier (See para 5-19.)

(5)

Leak test the coil, newly connected tubing and tubing connections in the area of the newly brazed joints

per paragraph 5-7.

(6)

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

(7)

Install the condenser air inlet screen and secure with 8 each screws and lock washers.

(8)

Close all access doors.

5-14.

DISCHARGE PRESSURE REGULATING VALVE See figure 5-5 or 5-6.

Access. Open left side condenser section access door.

Adjust. Factory set point of assembled refrigerators is 100 psig (689.5 kPa) minimum.

(1)

This valve has an operating point adjusting range of 50 to 195 psig (344.8 to 1344.5 kPa).

(2) One full turn of the adjusting stem will change the setting by 21 psig (144.8 kPa). Turn the stem

clockwise to increase, counterclockwise to decrease.

(3) After a new valve is installed, operate the unit, remove the cap and adjust the valve stem to a gage

indication of 100 psig (689.5 kPa) minimum.

Removal.

(1) Pump the system down in accordance with paragraph 5-6.

(2) Connect a dry nitrogen source to the compressor discharge service tee and loosen the flare nut to the

receiver inlet valve. Purge this section of tubing in accordance with paragraph 5-9.

(3)

Debraze (See para 5-12) the tubes to the valve and remove the discharge pressure regulating valve.

Installation.

(1) Braze (see para 5-12) the tubes to the discharge pressure regulating valve.

(2)

Tighten the flare nut to the receiver inlet valve and remove the nitrogen source connection.

(3)

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

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

the newly brazed joints per paragraph 5-7.

5-13