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.
TFFT has been designed to withstand temperatures down to -25ºF (-32ºC) 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 20ºF (-7ºC), Class A foam agent or Class B
foam agent rated for at least -20ºF (-29ºC) must be used. Failure to comply may
result in damage to equipment.
TFFT must be kept in a protective environment (above 55ºF [13ºC]) when water is
present in water tank and lines. Only store TFFT in an unprotected environment
with temperatures below 32ºF (0ºC) 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.
A complete TFFT crew is required to perform firefighting operations.
Refer to the following manuals for additional cold weather operation information:
Basic Cold Weather Operation Manual; FM 31-70
Northern Operations; FM 31-71
Operation and Maintenance of Ordnance Material in Cold Weather (0ºF to -65ºF
[-18ºC to -54ºC]); FM 9-207
8X8 Heavy Expanded Mobility Tactical Trucks (HEMTT) Operator's Manual;
First Aid; FM 4-25.11