TM-5-4210-249-13-P-1

TACTICAL FIRE FIGHTING TRUCK (TFF) MODEL M1142

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LIST (INCLUDING DEPOT REPAIR PARTS AND SPECIAL TOOLS); PART 1 OF 4

TM-5-4210-249-13-P-1 - Page 268 of 1188

TM 5-4210-249-13&P-1

0045-4

DRAFT

0045

OPERATING IN COLD WEATHER

CAUTION

If main water pump is in a “Wet” (flooded) condition during cold weather

operations, pump must be engaged and re-circulating water to prevent freezing of

pump and plumbing.

Failure to comply may result in damage to equipment.

NOTE

•

Winterization package allows operation of water pump, foam system and body to -25ºF

(-32ºC) for a period no longer than two hours.

This package includes two diesel fired

27,300 BTU heaters, one inside pump compartment and one in rear compartment.

Heaters automatically turn on at 39ºF (+/- 2ºF), (4ºC [+/-1ºC]), and turn off at 57ºF

(+/-3ºF), (14ºC [+/-1ºC]).

•

Two 2,250W heaters are installed in onboard water tank. Tank heaters automatically turn

on at 40ºF (4ºC) and turn off at 60ºF (16ºC) when main circuit breakers (CB1 and CB3)

and tank and pipe heater circuit breakers (CB11, CB13, and CB15) are turned ON and not

tripped.

Pump compartment is sealed to reduce heat loss. Critical piping is also heated

and insulated.

1.

Start vehicle engine (TM 9-2320-347-10).

2.

Proceed to scene.

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NOTE

When arriving at scene, proceed with Step (3).

3.

Start water pump engine (WP 0022).

4.

Put TANK TO PUMP switch (1) to OPEN position.

Indicator light (2) will illuminate.

5.

Prime water pump (WP 0023).

TFFT00646P