Operation Under Rainy or Humid Conditions

exposed metal is greatly accelerated in salt water areas.

lubricate, and reinstall. Clean all the machined surfaces

Coat all exposed metal surfaces with an approved

of the pump and control linkages to remove

lubricant. When the fire truck has been partly immersed

accumulated dust and sand.

or sprayed with salt water, wash down with fresh water.

Electrical Systems. Keep the insulation

Pumping Salt Water. Do not use salt water

electrical connections, and all motors free from dust and

except in case of extreme emergency. At the earliest

sand to prevent wear and short circuits. Cover the siren

opportunity after pumping salt water, flush the tank

when not in use.

piping and fire pump thoroughly with fresh water. After

flushing, drain the water pump.

25. Operation Under Rainy or Humid Conditions

27. Operation at High Altitude

General. High humidity causes a rusting

and corrosive action to exposed metal surfaces with oil

General. Operation at high altitude presents

or grease.

special problems due to lower atmospheric pressure and

wide differences in temperature, which occurs during the

Fuel System.. Keep the fuel tank as full as

day and night. Protect the fire truck at all times from the

possible to eliminate condensation. Clean the fuel line

lowest anticipated temperature.

sediment bowl daily (TM 9-2320-235-10).

Cooling System. Keep the cooling system

Electrical System.

Keep the electrical

clean and filled to the proper level. Inspect frequently

system clean an(d dry. Wipe off any excess moisture.

as water evaporates more rapidly at high altitudes.

Pay particular attention to electrical connections.

Keep the radiator clean and engine compartment doors

26. Operation in Salt Water Areas

and radiator shutters open when in operation.

General. The deterioration and corrosion of

Section V. OPERATION OF AUXILIARY MATERIEL USED IN CONJUNCTION WITH FIRE TRUCK

its location; turn the handle and work the handle like a

28. Carbon Dioxide and Carbon Tetrachloride Type

pump. Direct the stream at the base of flame.

Fire Extinguishers

Warning

Carbon Dioxide Type.

Be extremely careful when using a

(1)

Description. The carbon dioxide fire

carbon tetrachloride fire extinguisher

extinguisher is suitable for use on

in an enclosed area.

Provide

electrical and flammable fires.

The

adequate ventilation before entering

carbon dioxide type is of the 15-pound

size.

The 15-pound extinguisher is

an enclosed area where carbon

portable.

tetrachloride has been used.

(2)

Operation.

Remove the fire

(3)Maintenance.

For maintenance of the

fire

extinguisher from its location, break the seal, operate

extinguisher, refer to TM 5-687 and TM 9-1799.

the control valve, and direct the stream at the base of

29.

Monobromotrifluoromethane and Foam Type

the flame.

Fire Extinguishers

(3)

Refilling and Maintenance.

For

Monobromotrifluoromethane Type.

detailed information on refilling and maintenance, refer

to TM 5-687 and TM 9-1799.

(1)

Description.

The monobromotrifluoromethane

type fire extinguisher is generally suitable for all types of

Carbon Tetrachloride Type.

fire, except fire involved with LOX (liquid oxygen)

(1)

Description. The carbon tetrachloride

generating equipment. The fire extinguisher is furnished

type fire extinguisher is suitable for electrical fires

with a disposable type cylinder.

because it will not damage electrical equipment or

(2)

Operation.

To operate the fire

conduct electricity. It is a 1-quart, vaporizing-liquid,

extinguisher, perform the following:

pump operated extinguisher.

(2)

Operation.

Remove fire extinguished from

TAGO 6839A