TM 9-4120-408-14
Table 4-4. Unit Troubleshooting Table. (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11. Compressor Starts Normally, but High Pressure Cut Out Switch Soon Trips. (Continued)
Step 3. Test 50 amp relays (K1 and K2) (paragraph 4-18).
a. Replace damaged or defective 50 amp relays (paragraph 4-18).
b. Notify direct support maintenance.
SECTION VI. UNIT MAINTENANCE PROCEDURES
4-10. ACCESS PANEL MAINTENANCE
This task covers:
Remove
Install
Inspect
INITIAL SETUP:
Tools
Equipment Conditions
Tool Kit, Service Refrigeration Unit,
Air Conditioner shut down,
Material/Parts General Safety Instructions
Do not work on equipment without
following standard shop safety
Refer to TM 9-4120-408-24P for part
precautions.
numbers of items to be replaced.
a. Remove.
Remove twelve screws (Figure 4-4, 1), lock washers (2), flat washers (3), and access panel (4).
Discard lock washers (2).
b. Inspect.
(1) Inspect access panel (4) for cracks, holes, damage, or damaged or missing EMI gasket (5).
(2) Inspect mounting hardware for damage.
(3) Replace damaged or missing components.
c. Install.
NOTE
If access panel is to be replaced, refer to paragraph 4-12, remove data plate from damaged access
panel and install on new access panel.
(1) Position access panel (4) on side panel (6).
4-12