TM 9-4120-395-14&P
4-23. CONTROL BOX WIRING.
This task covers:
a. Inspection
b. Testing
c. Repair
d. Removal
e. Installation
INITIAL SETUP:
Tools:
Tool Kit, service, refrigeration unit
Materials:
Tape, Pressure Sensitive (Appendix F, Item 13)
Equipment Conditions:
Power off at power source.
Both front door assemblies removed. See para 4-17.
General Safety Instructions:
Disconnect input power to the unit before performing any internal maintenance.
Voltages used can kill. Shutting the unit off at the thermostat does not disconnect
unit power.
a. Inspection.
(1) Remove the control box cover (1, Figure 4-19) from the control box (2) by removing the two screws (3).
(2) Check that all wiring is attached and secure.
(3) Attach the control box cover to the control box by installing the two screws.
(4) Install both front door assemblies. See para 4--17.
b. Testing.
(1) Remove the control box cover (1, Figure 4-19) from the control box (2) by removing the two screws (3).
(2) Check any suspect wiring for continuity with a multimeter. If no continuity is indicated, replace defective
wiring.
(3) Attach the control box cover to the control box by installing the two screws.
(4) Install both front door assemblies. See para 4-17.
c.
Repair.
(1) Remove the control box cover (1, Figure 4-19) from the control box (2) by removing the two screws (3).
(2) Wrap any bare wire with pressure sensitive tape.
(3) Install control box cover on control box with two screws.
(4) Install both front door assemblies. See para 4-17.
d. Removal.
(1) Remove the control box cover (1, Figure 4-19) from the control box (2) by removing the two screws (3).
NOTE
Mark wiring connection points so replacement wiring can be connected in the same way.
(2) Remove any damaged wire by loosening securing screws.
4-32