TM 9-4110-255-14
4-32. CONTROL TRANSFORMER T1 TESTING AND REPLACEMENT .
This task covers:
a. Testing
b. Removal
c. Installation
INITIAL SETUP
Materials/Parts:
Equipment Conditions:
Lock Washers (2)
Refrigeration unit shut down (para 2-7) and battery
1, Appendix G
disconnected (para 4-35).
Lock Washers (2)
Control box cover door raised and latched.
5, Appendix G
Marker tags (4)
4, Appendix E
a. Testing. (See Figure 1-4.)
(1) Be sure battery has been disconnected then remove two bolts (1) and lock washers (2). Open control
panel (3). Discard lock washers.
Figure 4-26. Control Transformer T1
(2) Tag and disconnect wire leads (4).
(3) Using multimeter set to measure continuity, check control transformer (5) continuity between terminals 1 to
2 and 5 to 8. Continuity should be indicated. If no continuity was indicated, replace control transformer.
(4) Check continuity between either terminals 1 to 5, or 1 to 8. No continuity should be indicated. If continuity
was indicated, replace control transformer.
4-82
