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 185 of 288

TM 9-2540-207-14&P

6-21

6.5.27 E4 - REVERSE BURNER AIR FLOW (Design Iteration 1 & 2 Only)

BURNER FAN IS MEASURING REVERSE AIR THROUGH THE HEATER, OR IS OPERATING OUT

OF RANGE

CHECK/POSSIBLE CAUSE

REF

.R

EPAIR

1

CHECK THAT DUCTING OF THE

COMBUSTION AIR SYSTEM TO THE

INLET AND THE EXHAUST DUCTING

ARE CORRECTLY ATTACHED TO

THE HEATER

2.2

RECONNECT COMBUSTION AIR DUCTING

CORRECTLY

RESTART HEATER

2

CHECK THAT COMBUSTION AIR AND

EXHAUST DUCTING IS FREE FROM

OBSTRUCTIONS

REMOVE OBSTRUCTIONS

RESTART HEATER

3

CHECK FOR CARBON

ACCUMULATION OR

OBSTRUCTIONS IN COMBUSTION

ASSEMBLY

5.3

REMOVE CARBON AND CLEAN COMBUSTION

ASSEMBLY

RESTART HEATER

CHECK CONDITION OF FLAME TUBE

AND BURNER CHAMBER

5.3.2

5.3.5

IF DISTORTED, REPLACE FLAME TUBE AND

BURNER CHAMBER

RESTART HEATER

4

DEFECTIVE BURNER FAN

5.5.4

REPLACE BURNER FAN PLATE

RESTART HEATER

5

DEFECTIVE HEAT EXCHANGER

5.4.1

REPLACE HEAT EXCHANGER

RESTART HEATER

6

DEFECTIVE ELECTRONIC

PROGRAMMED CONTROLLER

BOARD

5.2.5

REPLACE ELECTRONIC PROGRAMMED

CONTROLLER

RESTART HEATER