TM-9-2540-207-14-P
HEATER, VEHICULAR COMPARTMENT, MODEL: A20
TECHNICAL MANUAL; OPERATOR, FIELD, AND SUSTAINMENT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2007
TM-9-2540-207-14-P - Page 199 of 288
TM 9-2540-207-14&P
6-35
6.5.44 F7 - EXHAUST OVERHEAT(Design Iteration 1 & 2 Only)
EXHAUST TEMPERATURE HAS EXCEEDED A SAFE OPERATING TEMPERATURE
CHECK/POSSIBLE CAUSE
REF
.R
EPAIR
1
CHECK TO ENSURE HEATER
DUCTING IS PROPERLY INSTALLED
VEHICLE TM
2.2
2.3
2.7
INSTALL DUCTING CORRECTLY TO HEATER.
ENSURE VENTILATION AIR BLOWS AWAY
FROM HEATER TO ENSURE PROPER AIR
MIXING.
2
CHECK FOR OBSTRUCTIONS IN AIR
INLET OR EXHAUST DUCTING
REMOVE OBSTRUCTIONS
RESTART HEATER
3
CHECK FOR BENDING OR CRIMPING
OF EXHAUST DUCTING
2.3
REPLACE DEFECTIVE DUCTING AND
REMOVE ALL UNNECESSARY BENDS
RESTART HEATER
4
CHECK FOR CARBON
ACCUMULATION INSIDE BURNER
HOUSING
5.3.7
5.4.1
CLEAN BURNER HOUSING
CLEAN HEAT EXCHANGER
5
CHECK FOR CONDITION OF FLAME
TUBE AND BURNER CHAMBER
5.3.2
5.3.5
IF DISTORTED, REPLACE FLAME TUBE AND
BURNER CHAMBER
RESTART HEATER
6
DEFECTIVE BURNER FAN PLATE
5.5.4
REPLACE BURNER FAN PLATE
RESTART HEATER
7
DEFECTIVE ELECTRONIC
PROGRAMMED CONTROLLER
BOARD
5.2.5
REPLACE ELECTRONIC PROGRAMMED
CONTROLLER
RESTART HEATER
6.5.45 F7 - EXHAUST OVERHEAT (Design Iteration 3 Only)
EXHAUST TEMPERATURE HAS EXCEEDED A SAFE OPERATING TEMPERATURE
CHECK/POSSIBLE CAUSE
REF
.R
EPAIR
1
CHECK TO ENSURE HEATER
DUCTING IS PROPERLY INSTALLED
VEHICLE TM
2.2
2.3
2.7
INSTALL DUCTING CORRECTLY TO HEATER.
ENSURE VENTILATION AIR BLOWS AWAY
FROM HEATER TO ENSURE PROPER AIR
MIXING.
2
CHECK FOR OBSTRUCTIONS IN
AIR INLET OR EXHAUST DUCTING
REMOVE OBSTRUCTIONS
RESTART HEATER
3
CHECK FOR BENDING OR
CRIMPING OF EXHAUST DUCTING
2.3
REPLACE DEFECTIVE DUCTING AND
REMOVE ALL UNNECESSARY BENDS
RESTART HEATER
4
CHECK FOR CARBON
ACCUMULATION INSIDE BURNER
HOUSING
5.3.7
5.4.1
CLEAN BURNER HOUSING
CLEAN HEAT EXCHANGER
5
CHECK FOR CONDITION OF FLAME
TUBE AND BURNER CHAMBER
5.3.2
5.3.5
IF DISTORTED, REPLACE FLAME TUBE AND
BURNER CHAMBER
RESTART HEATER
6
CHECK FOR WARPED BURNER
FAN PLATE
5.5.4
REPLACE BURNER FAN PLATE
RESTART HEATER
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