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 260 of 1318
TM 9-2320-328-13&P-1
0034-2
DRAFT
0034
Change 1
CAUTION
•
Watch cab instrument panel and pump operator’s panel closely.
If there are any
unusual readings, check as soon as possible!
•
All snow and ice should be removed from vehicle as soon as possible.
Snow and
ice may slow or stop movement of critical parts if allowed to pile up.
•
Special care must be used during operations in extreme cold environment.
In
extreme cold, water can freeze almost instantly if not circulating.
Hoses, plumbing,
fittings, pipes, pumps, tanks, turrets, nozzles, drains, etc., can freeze and crack.
Foam concentrate may get thick and stiff.
Rubber may crack or break easily.
•
HEWATT has been designed to withstand temperatures down to -25°F (-32°C) for a
period no longer than two hours.
If either of these limits are exceeded, damage to
equipment may result.
•
During cold weather operations below 20°F (-7°C), Class A foam agent rated for at
least -20°F (-29°C) must be used.
Failure to comply may result in damage to
equipment.
•
HEWATT must be kept in a protective environment above 55°F (13°C) when water is
present in water tank and lines.
Only store HEWATT in an unprotected environment
with temperatures below 32°F (0°C) if water system has been completely drained
and blown out, and foam system has been completely drained.
Failure to comply
may result in damage to equipment.
•
In cold weather, valves and drains may become frozen.
Do not force valves and
drains open or closed.
It may be necessary to thaw valves and drains before
attempting to open or close.
Failure to comply may result in damage to equipment.
NOTE
A complete HEWATT crew is required to perform firefighting operations.
Refer to the following manuals for additional cold weather operating information:
1.
Basic Cold Weather Operations Manual; FM 31-70.
2.
Northern Operations; FM 31-71.
3.
Operation and Maintenance of Ordnance Materiel in Cold Weather; FM 9-207.
4.
8X8 Heavy Expandable Mobility Tactical Trucks (HEMTT) Operator’s Manual; TM 9-2320-422-10.
5.
First Aid; FM 4-25.11.
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