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(2) Replace a damaged cover or grille.
b. Servicing. Refer to figure 3-4 and service the
condenser coil.
c. Installation. Refer to figure 3-5 and install
the cover and grille.
c. installation. Refer to figure 3-5 and install
the grille and screen.
3-11. Condenser coil
3-12. Sight Glass
a. Removal. Refer to figure 3-5 and remove the
Inspect the sight glass (fig. 1-2) for cracks, bro-
condenser gille and screen.
ken glass, and dirt,
Section IV. TROUBLESHOOTING
3-13. General
3-.14. Troubleshooting Instructions
This section provides information useful in diag-
Refer to table 3-2 for the list of malfunctions
nosing and correcting unsatisfactory operation or
failure of the air conditioner or its components.
and the corrective action procedures. Each mal-
function is followed by a list of probable causes
of the trouble. The corrective action recom-
mended is described opposite the probable cause.
Section V. FIELD EXPEDIENT REPAIRS
3-15. General
Organizational maintenance troubles may occur
while the air conditioner is operating in the field
where supplies and repair parts are not available
and normal corrective action cannot be per-
formed. When this condition exists, the following
expedient repair may be used in emergencies,
upon decision of the unit commander. Equipment
so repaired must be removal from service as soon
as possible and properly repaired before being
put into service again.
Section VI. ORGANIZATIONAL
3-18. General
The air conditioner is constructed with removable
aluminum panels and grilles. The front access
panel (fig. 1-1) provides access to the control
panel, the control box, and service valves. A dis-
charge grille protects the evaporator coil and
controls the discharge of conditioned air. The in-
take grille protects the air conditioning filter and
regulates the amount of air intake. The con-
denser coil grille (fig. 1-2) protects the condenser
coil. A fan guard (fig. 3-5) is mounted on the
rear to protect operating personnel from the con-
denser fan. The fresh air inlet screen permits the
entry of outside air, which is controlled by a
damper door control (fig. 1-1). The C/B cover is
provided
for
ease
of
instillation
of
a
chemical/biological filter when required.
3-16. Compressor Inoperative
Trouble
Expedient remedy
Compressor overload pro-
Bypass the protector by
tector malfunctioning.
installing ‘two insulated
jumper wires between
the connection terminals
on the compressor.
3-17. Control Circuit Inoperative
Trouble
Expedient mamiu
Fuse blown.
Remove the front access
panel, control box cover,
and fuse. Install jumper
wire
MAINTENANCE PROCEDURES
3-19. Fan Guard, Condenser
Fresh Air Inlet Screen
and bypass fuse.
Screen and
a. Removal. Refer to figure 3-5 and remove the
fan guard, condenser grille and screen, and fresh
air inlet screen.
b. (Waning. Clean the screens with compressed
air.
c. Inspection, Inspect the guard and screens for
bends, dents breaks or other damage.
d. Replacement. Replace a badly damaged
guard or screen with a serviceable one.
e. Installation. Refer to figure 5 and install the
guard, condenser screen and grille, and fresh air
inlet screen.
3-20. Evaporator Fan and Inlet Ring
a. Removal.
3-9
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