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AFEX is a specialist in the manufacture of fire protection systems for mobile
heavy equipment. They recognize that any "down-time" of this valuable
equipment results in lost productivity and earnings. AFEX is dedicated
to helping you protect your investment in heavy equipment from loss
through fire
35 years of discovery, innovation, manufacture and testing of
fire suppression systems designed exclusively for mobile heavy equipment
ensures that your equipment is protected with a reliable, proven system.
No matter how hostile your equipment environment, AFEX can customize, install, and guarantee a
fire suppression system that works. AFEX equipment distribution through HIFAX INDUSTRIAL
is personalized and responsive to your specific requirements.
AFEX is uniquely positioned to meet your fire protection needs. They know heavy equipment.
Their engineering personnel have backgrounds in heavy equipment. AFEX designs reliable systems
that function and protect, but do not deter operation. All systems can be easily serviced and recharged
in the field with common everyday hand tools decreasing down-time while protecting your valuable
capital investment from fire.
AFEX fire supression systems are available for a wide array of industries like Mining, Landfill
Forestry, Steel & Slag, Resource Recovery, Pulp & Paper and Mass Transit
If you need more detailed information please call
Steve Lerch from Hifax Industrial
How Do AFEX Fire Supression Systems Work?
DETECTION
The AFEX detector is a point thermal type that is shock and vibration resistant. The detectors are
installed in and adjacent to the high hazard areas. The detector's switch contact closes at 300°F and
reopens at 270°F. The detectors are wired in parallel with a shielded two wire conductor that is
especially designed and constructed for AFEX. The detector is housed in a carbon steel bracket and is
designed to be easily bent to facilitate placement. The power for the detection system is provided by the
vehicle battery. The detection system may be enhanced by the addition of a Circuit Monitor Panel.
Note that the detection system is only used with Automatic Systems.
ACTUATION
In an automatic system, the closing of any one of the heat detectors will cause an electrical
actuation of the system by discharging an explosive squib. The force from the squib powers a puncture
pin which pierces the seal of a compressed nitrogen cartridge. The released gas flows to the extinguisher
cylinder. Manual actuation is accomplished by pulling a safety pin and applying force to the push knob
on a mechanical actuator assembly. This also forces the puncture pin into the seal of a compressed
nitrogen cartridge. Mechanical actuators should be located in the operator cab and on the outside of
the vehicle near the operator egress path.
DISTRIBUTION
The pressurizing gas enters a tube at the top of the extinguisher. The gas passes through
perforations in this tube, which extends to the bottom of the extinguisher. In so doing, the gas fluidizes
the powder, even when severely packed. As the gas increases the pressure in the cylinder, it ruptures the
bursting disc in the discharge outlet at the bottom, forcing the powder through the distribution network.
The distribution network consists of stainless steel tubing and/or hydraulic hose. Finally, the dry chemical
is disbursed through cone spray nozzles, which permit the broad distribution of the agent that is necessary
for a total flooding system. These nozzles are protected by a spring loaded cap.
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