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 193 of 288

TM 9-2540-207-14&P

6-29

6.5.36 F2 - BURNER FLAMEOUT (Design Iteration 3 Only)

DURING RUN OPERATIONS THE BURNER TEMPERATURE DROPS BELOW NORMAL OPERATING

LIMITS;- FLAME OUT DURNIG HIGH TO LOW

OR - XT BELOW FLAMEOUT THRESHOLD OR - BT

BELOW FLAMEOUT THRESHOLD OR - XT DROPPED MORE THAN 40C IN 8 SECONDS

CHECK/POSSIBLE CAUSE

REF

.R

EPAIR

1

CHECK IF VEHICLE FUEL FILTER

IS PLUGGED

VEHICLE TM

REPLACE FUEL FILTER

RESTART HEATER

2

CHECK FOR AIR BUBBLES IN THE

FUEL LINE.

BLEED AIR FROM FUEL LINES.

3

CHECK TO SEE IF FUEL LINE

LEADING TO HEATER IS PINCHED

OR OBSTRUCTED

STRAIGHTEN FUEL LINES AND REMOVE

OBSTRUCTIONS

RESTART HEATER

4

CHECK THAT THERE IS AMPLE

FUEL SUPPLY

TABLE 2-1

FILL FUEL TANK WITH FUEL

ENSURE A MINIMUM OF 3PSIG FUEL

PRESSURE IS SUPPLIED TO THE HEATER

INLET

RESTART HEATER

5

CHECK FOR OBSTRUCTIONS IN

ALL HEATER DUCTING

REMOVE OBSTRUCTIONS

RESTART HEATER

6

DEFECTIVE FUEL INJECTOR

5.5.5

REPLACE FUEL INJECTOR

RESTART HEATER

7

CHECK FOR CARBON BUILD-UP

ON BURNER FUEL SHAFT

5.3.7

CLEAN FUEL SHAFT

8

CHECK FOR CARBON

ACCUMULATION OR

OBSTRUCTIONS IN BURNER

5.3

REMOVE CARBON AND CLEAN COMBUSTION

ASSEMBLY

9

DEFECTIVE FLAME TUBE AND

BURNER CHAMBER

5.3.2

5.3.5

REPLACE FLAME TUBE

REPLACE BURNER CHAMBER

10

DEFECTIVE BURNER HOUSING

5.3.7

REPLACE BURNER HOUSING

RESTART HEATER

11

CHECK FOR LOOSE

CONNECTIONS BETWEEN THE

VENT FAN BOARD AND THE

LOGIC BOARD

RECONNECT THE P11 PLUG INTO THE VENT

FAN BOARD AND THE P1 PLUG INTO THE

LOGIC BOARD

RESTART HEATER