EXCESSIVE COOLING.

TM 5-4120-364-13

Table 3-2. Organizational Troubleshooting (continued)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 4. H i g h pressure cutout switch tripped.

R e s e t high pressure cutout switch.

Step 5. T h e r m a l overload switch tripped.

Allow rotor to cool and reset itself.

5. EXCESSIVE COOLING.

Step 1. Thermostat set for too cool operation.

R e s e t thermostat for temperature desired,

S e c t i o n V. Maintenance Procedures

GENERAL.

3-8.

T h e entire air conditioning unit is enclosed in single unit frames with removable

p a n e l s for easy access to components. T h e s e frames are bolted together to form a

s t a c k e d vertical unit. For purposes of maintenance, t h e u n i t i s c o v e r e d b y s e c t i o n s

b e g i n n i n g at the top of the unit with the evaporator fan section, then the evaporator

c o i l s e c t i o n , e t c . , e n d i n g with the bottom section which is the compressor section.

EVAPORATOR FAN SECTION.

3-9.

Covers, Fanels and Frame.

(1) Removal. R e m o v e the covers and panels by turning the fasteners one-

quarter turn counterclockwise. (See figure 3-3).

( 2 ) Cleaning.

C l e a n all parts with a damp cloth and dry thoroughly.

(3) Inspection.

(a)

Inspect

covers and panels for dents or other damage.

(b)

Inspect

fasteners and receptacles for security of attachment.

(c)

Inspect

gaskets for wear.

(d)

Inspect

insulation for security of attachment and for condition.

(4) Repair.

(a) Replace defective covers and panels.

3-7