TM-9-2320-328-13-P-1

HEMTT-BASED WATER TENDER (HEWATT)

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST); PART 1 OF 3

MARCH 2009

TM-9-2320-328-13-P-1 - Page 185 of 1318

TM 9-2320-328-13&P-1

0022-1

DRAFT

0022

Change 1

OPERATOR MAINTENANCE

FOAM AGENT FILLING/DRAINING/FLUSHING

FILLING FOAM AGENT TANK

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CAUTION

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Do not mix different types or manufacturers’ brands of foam agent in foam cell or

piping.

Mixing of different foam agents (either type or manufacturer) may cause

deterioration of foam agent, improper proportioning, and poor performance in a fire

situation.

Mixing of Class A and different types of foam agents may result in a

chemical reaction which can create globules, which can clog orifices and cause

system failure.

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Do not spill foam agent on pressure/vacuum vents.

Clean any spilled foam agent

before continuing with procedures.

If vents become blocked, pressure could build

up in tanks and may cause damage to equipment.

1.

Vehicle should be parked on a level surface.

2.

Ensure all water and other contaminants have been drained from foam tank (1) before filling.

3.

Ensure FOAM SYSTEM DRAIN valve (2) is in CLOSED position.

4.

Unstow right rear access ladder (WP 0012).

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HWT3125