Engine Ops Equipment PDF

WATER CAN Also called or pw can (pressurized water) Common model is the Amerex 240 H (shown on the right) The UL (Underwriters Laboratories) Classification/Rating System is a water equivalency rating; this model has a 2A rating Each A = 1.25 gallons (2A = 2.5, 3A = 3.75, etc.) Intended for Class A f...

WATER CAN Also called or pw can (pressurized water) Common model is the Amerex 240 H (shown on the right) The UL (Underwriters Laboratories) Classification/Rating System is a water equivalency rating; this model has a 2A rating Each A = 1.25 gallons (2A = 2.5, 3A = 3.75, etc.) Intended for Class A fires Six year warranty Polished stainless-steel construction 2.5 gallon capacity (7.5 lbs. empty; roughly 28.3 lbs. full) Max effective range is 44-55 feet with a 55 second discharge time DRY CHEMICAL EXTINGUISHER Common model is the Ansul Sentry 10 (shown on the right) Has Class A:B:C capabilities Use caution with certain electrical equipment; the powder is corrosive Use caution in small/contained areas; the powder is an irritant UL rating comes with two different ratings: 10-A:60-B:C 10-A means the agent is as effective as 12.5 gallons of water 60-B:C is equivalent to the square footage an operator can extinguish; 60-B:C means it will cover 60 square feet 10 lbs. of extinguishing agent (17 lb. weight total) Max effective range is 19 feet with a 21 second discharge time After use, can be exchanged at Tools and Equipment Should be inspected yearly; check the inspection tag CO2 EXTINGUISHER Common model is the Badger B10V-1 (shown on the right) Class B:C capabilities; ideal for sensitive electrical equipment because it leaves no residue behind UL Rating is the square footage that an operator can extinguish; 10-B:C means it will cover 10 square feet Note the lack of a pressure gauge; operating pressure is 850 psi Max effective range is 3-8 feet with a ten second discharge time. The reach is greatly affected by any wind or air movement Five year hydrostatic test interval; six year warranty After use, can be exchanged at Tools and Equipment Should be inspected yearly; check the inspection tag Second Edition 01/31/22 17 AMEREX 240 H WATER CAN 1) The water can should be filled any time it is discharged. The pressure gauge should be inspected daily to ensure that there has not been an undetected leak, or that the extinguisher was not recharged after previous use. 2) Ensure that the extinguisher is fully depressurized prior to removing the valve assembly. 3) The extinguisher can be depressurized via normal operation of the discharge handle (discharging both air and the water), or by inverting the extinguisher and operating the discharge handle (air and the contents within the pickup tube). 4) Remove the valve assembly and pickup tube by unscrewing the valve collar nut. 5) Prior to filling the extinguisher, rinse the unit with clean water to remove any residue that may be left over from foam/soap. Filling the unit without rinsing can lead to excessive foaming, giving a false indication through the fill tube that the unit is full. 6) When filling the extinguisher, ensure the plastic fill tube is in place. The extinguisher is full once the water overflows from the top of the fill tube. 7) Once the extinguisher is full, remove the fill tube. An additive can then be added to the extinguisher. This can either be Class A Foam concentrate or normal dish soap. A few ounces of additive should be sufficient (about 1 cup). Soap will not have the blanket effect like Class A foam, but it will still reduce the surface tension in the water to al of Class A materials. Second Edition 01/31/22 18 8) Replace the fill tube and valve assembly. The locking collar only needs to be installed hand tight. Using a wrench can cause overtightening and damage the collar and valve assembly. 9) Use the Schrader valve to pressurize the extinguisher until the gauge reads 100 psi; over pressurizing can cause the valve assembly to fail (eye protection is recommended). Be sure not to rely solely on the pressure gauge when inspecting the extinguisher during morning checks. There may be times the extinguisher has adequate air pressure, but contains less than the rated 2.5 gallons of water. Pull the extinguisher from the bracket to feel its weight (roughly 28 lbs. full). If in doubt about the extinguisher s water level, depressurize it and fill it. BADGER WP-61 The Badger model of extinguisher can only be filled via the nozzle. This model can be identified by the lack of a Schrader valve opposite the pressure gauge. These extinguishers require the firefighter to hold the fill line onto the nozzle of the extinguisher to keep it from detaching while pressurizing. For air to enter into the extinguisher, the firefighter will also have to open the discharge handle. Firefighters must remember to release the discharge handle prior to detaching the air hose! Second Edition 01/31/22 19