TM 9-4120-399-14
5-19. SOLENOID VALVE (L1). - Continued.
WARNING
DANGEROUS CHEMICAL
(R22)
is used in this equipment
o r severe injury may result if personnel fail to observe safety
precautions. Use great care to avoid contact with liquid refrigerant
gas being discharged under pressure. Sudden and irreversible tissue
damage can result from freezing. Wear thermal protective gloves and
a face protector or goggles in any situation where skin-eye-contact is
possible. Prevent contact of refrigerant gas with flame or hot surfaces.
Heat causes refrigerant to break down and form carbonyl chloride
(phosgene), a highly poisonous and corrosive gas.
a. Removal.
(1) Remove nut (1) from valve (2).
(2) Remove and set aside nameplate (3) and coil (4) from valve (5).
(3) Remove two screws (6) that secure the plunger assembly (7) to the valve body (8).
(4) Remove the plunger assembly (7), diaphragm (9), and O-ring (10).
(5) Check valve body (8) for visible damage.
Normally valve body replacement is not
necessary.
(6) If valve body is in good condition, skip steps (7) through (13).
(7) Purge the system with nitrogen (See para. 5-8).
(8) Debraze tube connections (See para. 5-9)
(9) Remove four screws (11) and four lock nuts (12) that secure the bracket (13) to
casing.
(10) Remove bracket (13) and valve body (8).
(11) Remove two screws (14) and lock washers (15) that secure the valve body (8) to
bracket (13).
(12) Remove valve body (8).
(13) Tag and disconnect coil wires.
5-40
