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TM 9-4110-257-14
e.
Check and adjust V-belts as necessary (para 4-38).
CAUTION
Using excessive force when opening or closing valves
can cause damage to the valve seats.
f.
Refrigeration System Valves. The refrigeration system has been pumped down and the valves must be
properly positioned before operating the refrigeration unit.
(1)
Fully open both stop valves (1, fig. 4-4) and (2).
(2)
Remove two caps (3) and fully open two isolation valves (4). Install two caps.
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.
(3)
Remove two caps (5) and fully open two shut off valves (6). Install two caps.
g.
Close both side condenser doors and both front bottom doors.
4-8. PRELIMINARY ADJUSTMENT OF EOUIPMENT.
a.
Open control panel cover and secure open with door holder clips.
b.
Remove two bolts (1, fig. 4-5) and lock washers (2). Open the control box cover (3). Discard lock washers.
4-6
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