Figure 5-7. Solenoid valve, disassembly and reassembly.

Figure 5-7. Solenoid valve, disassembly and reassembly.

c. Removal and Disassembly.

trols the flow of refrigerant through the system

when it is in the bypass circle. It is closed during

(1) Remove top cover (para 3-15).

the cooling cycle of operation.

(2) Discharge the refrigerant (para 6-1).

b. On-Equipment Testing.

(3) Refer to figure 5-6 and remove the hot

(1) Remove the top cover (para 3-15).

gas bypass valve.

(2) Start the air conditioner. In the bypass

(4) Refer to figure 5-7 and disassemble the

mode of operation the tubing from the discharge

hot gas bypass valve.

side of the valve should become warm immedi-

(5) Remove the tubing from valve body.

d. Reassembly.

ately. If not, stop the unit and check the electri-

cal connection (para 513) and the solenoid coil.

Caution: Heat must not be applied to as-

If the valve fails to click upon the start of the by-

sembled valve.

pass cycle, stop the unit and check the electrical

connection and coil. Refer to figure 56 and re-

(1) Solder the tubing to the valve body.

move the electrical leads. Test the valve termi.

(2) Complete reassembly of the hot gas by-

nals for continuity with a multimeter set on the

pass valve by reversing the order of disassembly.

e. Installation.

ohm scale. Continuity should exist between con-

tacts. Connect one coil lead to the air conditioner

(1) Install the hot gas bypass valve by rev-

casing and the other end to either coil lead, conti-

ersing the order of removal.

nuity should not exist.

(2) Replace the top cover (para 3-15).

5-10