Covering the politics, Business and technology of defense - Subscribe Today

TM-9-2540-207-14&P Sustainment Manual for A20 Heater for M113 2540-01-396-2826 Download

Page 187 of 288

TM 9-2540-207-14&P 6-23 6.5.30 E5 - INLET OVER PRESSURE (Design Iteration 3 Only) AIR IS BEING FORCED THROUGH THE HEATER BY THE NBC SYSTEM AT STARTUP, OR BURNER FAN OPERATING LIMITS ARE OUT OF RANGE AIR PRESSURE IS GREATER ON THE INLET SIDE OF THE BURNER FAN THAN ON THE EXHAUST SIDE CHECK/POSSIBLE CAUSE REF. REPAIR 1 ENSURE ALL DUCTING TO HEATER IS PROPERLY CONNECTED 2.3 2.7 RECONNECT DUCTING RESTART HEATER 2 CHECK THAT NBC SYSTEM IS OFF REF. APPROPRIATE VEHICLE TM VEHICLE TM TURN NBC SYSTEM OFF IF POSSIBLE RESTART HEATER RESTART NBC SYSTEM 5 MINUTES AFTER HEATER ENTERS RUN MODE (07 OR 14) NOTE:THIS IS A WARNING, THE AIR PRESSURE DIFFERENCE IS GREATER THAN 6 IWC; THE HEATER WILL ATTEMPT TO OPERATE, BUT HAS THE POTENTIAL TO FLAME OUT. 6.5.31 E6 - HIGH VOLTAGE (Design Iteration 1 & 2 Only) VOLTAGE SUPPLIED TO THE HEATER IS ABOVE NORMAL VOLTAGE LIMITS (19VDC - 30VDC NORMAL RANGE) CHECK/POSSIBLE CAUSE REF. REPAIR 1 CHECK THE SOURCE VOLTAGE OR BATTERY LEVELS. VEHICLE TM IF VOLTAGE IS GREATER THAN 30VDC THEN CHECK VEHICLE ALTERNATOR - SEE APPROPRIATE VEHICLE TM TURN HEATER OFF UNTIL VOLTAGE SYSTEM REPAIRED 2 DEFECTIVE ELECTRONIC PROGRAMMED CONTROLLER BOARD 5.2.5 REPLACE ELECTRONIC PROGRAMMED CONTROLLER RESTART HEATER