TM-9-2540-207-14&P Sustainment Manual for A20 Heater for M113 2540-01-396-2826 Download
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TM 9-2540-207-14&P 3-3 3.5 Shutdown Procedures !WARNING! In the event that an emergency shut down is required, disconnect the heater power by detaching the MS Power Connector from the heater, or disconnect the breaker to the heater. !WARNING! In the event of an emergency shut down, DO NOT TOUCH the heater until it has had sufficient time to cool. The Heat Exchanger remains at full temperature and the heater will not have completed a purge cycle, both of which will pose a safety hazard. Note: The heater will also automatically shut down if an unsafe operating condition or component fault is detected. 3.5.1 Manual Shutdown At any time during Start Up or Run Operation, the heater may be manually shut down by moving the START/OFF/RUN switch to the OFF position. When the switch remains in the OFF position for more than two (2) seconds, the heater will enter Purge Mode, and after three (3) minutes will automatically shut off. During a Manual Shut Down, the Heater’s Diagnostic Display will report the Heater’s Data Codes (ref. 3.6). During Shut Down and Purge, the heater will not respond to the Control Box Switch until the three (3) minute Purge Cycle has been completed. 3.6 Purging the Heater To manually Purge the heater, hold the Control Box Switch in the “Start” position for ten (10) seconds, and the let switch go to “Off” position. The heater will then commence a three (3) minute Purge cycle while the Diagnostic Display Code shows 00 for one minute, then cycles through the Heater Data Codes (ref. 3.6). 3.7 Heater Data Codes Mode To force the heater to Data Codes Mode, hold the Control Box Switch in the “Start” position for one (1) second, then let switch return to “Off” position. The heater will then cycle through the Data Codes. Note: If the Diagnostic Display appears blank and the heater is operating, the Diagnostic Display circuit has failed. Ref to section 5.5.2 for details. Note: The codes below will appear with a lower case “d” for A20 design iteration version 3 and above (see Section 5 for more detail on design iteration versions). D1 Operation Hours D2 Number of Starts D3 Version Level Table 3.7-1. Data Codes