TM 9-4110-255-14
5-9.
SERVICE MANIFOLD INSTALLATION.
This task covers:
a. Installation
b. Removal
INITIAL SETUP
Tools:
General Safety Instructions:
Refrigeration Unit Service Tool Kit
WARNING
4, Section III, Appendix B
Refrigerant Recovery and Recycle Unit
5, Section III, Appendix B
Heat may cause the refrigerant to
decompose and release irritating, toxic,
Equipment Conditions:
and corrosive gases. Prevent contact of
refrigerant with flame or hot surfaces.
Refrigeration unit shut down (para 2-7) and battery
disconnected (para 4-35)
Rotating parts are used in the refrigeration
Front door and right side door open.
unit. Personal injury can result if battery
is connected.
General Safety Instructions:
Dangerous chemical refrigerant under
pressure is used in the operation of this
WARNING
equipment. Use great care to avoid
contact with liquid refrigerant. Work in a
Compressor lubricating oil used in this
well ventilated area.
refrigeration system is caustic. Wear gloves
Sudden and irreversible tissue damage
and a face protector or safety glasses in any
can result from freezing. Wear gloves and
situation where skin or eye contact is possible.
face protector or safety glasses in any
If oil does contact skin, wash with soap and
situation where skin or eye contact with
water.
refrigerant is possible.
a.
Installation.
CAUTION
Using excessive force when opening or closing valves can cause damage to the valve seats.
NOTE
The compressor shut off valves can be adjusted to three positions, fully closed to block the
refrigerant tubes and isolate the compressor and service port, fully open to allow flow from
piping to compressor but not the service port, and cracked (one turn closed from fully open) to
allow flow from piping to compressor and service port on valve.
(1)
Remove two shut off valve caps and turn the shut off valves fully counterclockwise to back seat them.
(2)
Remove two flare coupling caps.
(3)
Check that all four service manifold valves are closed.
5-12
