5.10 THERMISTOR RELAY F12 MAINTENANCE.

Figure 5-23 Diodes, Time Relay, Power Supply Maintenance.

Figure 5-24 Control Cabinet Assembly, Circuit Breaker F1 to F11, Thermistor relay F12, True Power Measure Transformer P4A Maintenance

TM-9-6115-668-13 5Kw 28VDC Auxiliary Power Unit (APU) MEP 952B Manual
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TM 9-6115-668-13 5.10 THERMISTOR RELAY F12 MAINTENANCE. This task covers: a. Removal b. Installation Equipment Conditions General Mechanic’s Tool Kit Reference (item 2, appendix B) Generator Set 150 kW shut Automotive Fuel and Electrical System Repair, Tool Kit down, (item 3, appendix B) paragraph 25.2 Materials/Parts Cable ties (item 10, appendix E) WARNING Disconnect the negative battery cable first and then the positive bat- tery terminal cables. Failure to observe this warning could result In se- vere personal Injury or death. C A U T I O N Tag all cables prior to removal to ensure correct connection of the cables during Installation. 1. 2. 3. 4. 5. Open flap (2, figure 5-24) on unit hood assembly (1). Open front panel (4) on control cabinet assembly (3) and secure with prop (5). Open cable conduit (47) and cable conduit (60). Record labeling and position of cables and disconnect cables (58, 49) from terminals (48, 59) of thermistor relay F12 (17). Use a screwdriver to push unlocking element on thermistor relay F12 (17) downward, tilt thermistor relay F12 (17) upward and remove from mounting bar (14). 1. Hook thermistor relay F12 (17) into top of mounting bar (14) and clip in at the bottom. 2. Noting labeling and position of cables install cables (49, 58) to terminals (48, 59) of thermistor relay F12 (17). 3. Close cable conduit (47) and cable conduit (60). 4. Stow prop (5) and close front panel (4). 5. Close flap (2). 5-110

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