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 TM 9-4120-430-14
0057 00
WARNING
Individuals, who have chronic or recurrent respiratory conditions, including allergies
and asthma, should not be employed in this environment.
WARNING
Avoid bodily contact with liquid refrigerant and avoid inhaling refrigerant gas. Be
especially careful that refrigerant does not come in contact with eyes. Use an air-
filtering mask. In case of refrigerant leaks, ventilate area immediately.
CAUTION
When performing brazing/debrazing operations, wrap valves with wet rags to act as a
heat sink.
NOTE
Replace filter-drier whenever refrigerant system is opened.
REMOVAL
Expansion Valve
1.
Locate bulb (1) strapped with insulation (2) to suction line (3). See figure 1.
2.
Remove insulation (2) covering bulb (1).
3.
Withdraw bulb (1) from suction line (3) taking care to prevent damage to capillary tubes (4).
4.
With dry nitrogen flowing through refrigerant system, debraze tubing to valve (8) at debrazing points (5, 6, and 7)
(see WP 0046 00).
5.
Remove expansion valve (8) from unit.
CAUTION
Damaged capillary will cause unit to malfunction. Use care not to damage or kink
capillary.
INSTALLATION
Expansion Valve
1.
With dry nitrogen flowing through refrigeration system, braze valve to tubing (see WP 0046 00).
CAUTION
Take care to avoid kinking capillary tube.
2.
Coil excess capillary tubing.
0057 00-2
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