TM 9-2350-261-10
OPERATE ENGINE COOLANT HEATER BELOW –25 F(–31 C) — Continued
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2.
Open coolant heater fuel supply valve.
3.
Check to make sure personnel heater fuel supply valve is open.
CAUTION
Overheating will damage batteries. Do not use coolant heater if temperature is above -25 F
(-31 C).
Carrier batteries can discharge. Do not operate carrier lights, radios, or other electrical
equipment while coolant heater is running.
4.
Press PRESS-TO-TEST switch. Check that indicator light comes on.
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