TM 9-2320-240-34-2
17-25. PERSONNEL HEATER TESTING (Contd)
e. Blower Motor Test
1. Place switch (5) in START position and hold.
2. When indicator lamp (6) illuminates, place switch (5) in RUN position. Allow heater (2) to run for
a few minutes.
a. If blower motor (9) does not run, replace blower motor (9) (para. 17-20).
b. If blower motor (9) runs, but heater (2) fails to ignite, replace ignition components
NOTE
Perform steps c through e for late model personnel heaters.
c. If shunt resistor (12) glows bright, remove screw-assembled lockwasher (11) and blower motor
lead (14) from flame detector switch (13).
d. If shunt resistor (12) turns dull, replace blower motor (9) (para. 17-20).
e. If shunt resistor (12) continues to glow bright, check heater wiring.
f. Overheat Switch Test
1. Place switch (5) in START position.
2. When indicator lamp (6) illuminates, place switch (5) in RUN position and allow heater (2) to
operate for one minute.
3. Partially restrict air inlet with a sheet of cardboard or sheet metal. Overheat switch (10) should
activate and shut down heater (2) within five minutes.
4. If heater (2) does not shut down after five minutes, replace overheat switch (10) (para. 17-22).
g. Test Equipment Removal
WARNING
Allow time for heater to cool before removing from test equipment.
Failure to do so may result in injury to personnel or damage to
equipment.
1. Close fuel shutoff valves (1).
2. Disconnect lead (3) from power source (4).
3. Remove heater (2) from test equipment.
4. Place guard (7) on heater (2) and turn two dzus fasteners (8) to secure.
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