TM 9-4120-385-14
WARNING
High voltage can kill.
1. Disconnect power supply.
2. Remove eleven screws and top panel.
3. Inspect for loose electrical and refrigeration connections and evidence of electrical
shorts.
b. TESTING.
WARNING
Use great care to avoid contact with liquid refrigerant or refrigerant
gas being discharged from any container under pressure. Sudden
and irreversible tissue damage can result from freezing. Wear
thermal protective gloves and a face protector or safety glasses in
any situation where skin or eye contact is possible.
Prevent contact of refrigerant gas with flame or hot metal surfaces.
Heat causes the refrigerant to break down and form carbonyl
chloride (phosgene), a highly toxic and corrosive gas. In case of
refrigerant leaks, ventilate area immediately.
1. Release refrigerant. Refer to Paragraph 5-5.
2. Remove four mounting screws (5) and enclosure (4).
3 . Remove motor.
4. Pressure Switch Testing.
NOTE
Switch may be tested without removal from enclosure.
(a) Tag and disconnect electrical leads and connect a multimeter across the
electrical contacts 2 and 3 of the pressure switch.
(b) Loosen the flare nut and disconnect the pressure switch line.
5-70
