TM 10-8145-222-23
MAINTAINER MAINTENANCE
MICROPROCESSOR CONTROLLER ASSEMBLY
REPLACE, SERVICE
INITIAL SETUP:
Tools and Special Tools
References
Service Refrigeration Ordnance
TM 10-8415-222-10
Tool Kit (WP 0096, Table 2, Item 6)
Personnel Required
Equipment Condition
Utilities Equipment Repairer
Refrigeration unit shut down (TM 10-8415-222-10)
External electrical power disconnected (TM 10-8415-
222-10)
REPLACE
WARNING
Electrical voltage and current cannot be seen, and when contacted can result in
death, render you unconscious, or severely burn you. Use extreme care when
working around or with energized equipment. Electricity is unlike most other
dangerous things you can come in contact with because it gives no warning.
Do not perform any maintenance on electrical equipment unless all power is
removed.
1. Disconnect battery negative (-) terminal (WP 0053, Disconnect).
2. Open control panel door (Figure 1, Item 7).
3. Remove 24 screws (Figure 1, Item 1) securing cover assembly (Figure 1, Item 2) to controller. Retain screws for
reinstallation.
4. Remove cover assembly (Figure 1, Item 2). Retain for reinstallation.
5. Remove two screws (Figure 1, Item 3) securing controller (Figure 1, Item 4) to controller bracket (Figure 1,
Item 5).
6. Carefully pull controller (Figure 1, Item 4) away from control panel assembly to access electrical connector
(Figure 1, Item 6).
7. Disconnect electrical connector (Figure 1, Item 6) from controller (Figure 1, Item 4).
8. Remove controller (Figure 1, Item 4) from control panel assembly.
9. Install replacement controller (Figure 1, Item 4) into control panel assembly and secure to controller bracket
(Figure 1, Item 5) using two screws (Figure 1, Item 3).
10. Reconnect electrical connector (Figure 1, Item 6) to controller (Figure 1, Item 4).
11. Install cover assembly (Figure 1, Item 2) onto controller (Figure 1, Item 4) and secure using 24 screws
(Figure 1, Item 1).
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