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 211 of 1318

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

0029-1

DRAFT

0029

Change 1

OPERATOR MAINTENANCE

FOAM SYSTEM FLUSHING

FOAM AGENT PIPING FLUSH PROCEDURE

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Be sure to wear proper eye protection to prevent injury or death.

Open and close all

valves slowly during any procedure.

Sudden changes in pressure may cause

equipment to react faster than personnel can be alerted.

Make sure surrounding

personnel are aware of changes being made to settings on equipment.

Failure to

comply may result in injury or death to personnel and damage to equipment.

CAUTION

Foam agent can cause operating components, such as valves, to stick if solution is

allowed to dry.

Many types of foam agents have penetrating properties, which can

remove or accelerate deterioration of greases and/or lubricants.

Special attention

should be given to lubrication requirements of equipment normally in contact with

foam solution such as valves, monitors, nozzles, etc.

More frequent lubrication

may be necessary.

It is recommended that the water pump and delivery system

components be flushed before they are returned to a “ready” condition.

NOTE

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Close all valves once water runs clear.

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Foam system flushing procedure must be done using onboard water tank.

1.

Using pressure governor, decrease water pressure (WP 0017).

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WARNING

ICON 66 AND 26