Audiovox AOM-713WP Specifications download pdf (Page 146)

Proposal Number PSDF #P09-0004

Enable system setup and full range system diagnostic functions.

Indicate on LED bargraph foam concentrate is being injected and the foam system capacity.

Indicate on LED bargraph when system capacity is not within design parameters.

Store independent default values for Class A foam concentrate injection.

Flash a “low concentrate” warning when the foam concentrate tank runs low.

Flash a “no concentrate” warning and shut the system off when the foam tank is empty.

Flash a "low battery” warning when battery voltage is low enough to affect system operation.

Flash a "hot" warning when system is running hot due to low voltage or radiant heat.

A distribution box shall be attached to the base plate to provide ease of installation. The distribution box

shall be sealed to a NEMA 4X or equal rating to permit installation in the pump compartment. Foam

concentrate flow feedback shall be provided to the control unit through the distribution box by a sensor

mounted in the foam pump body. Rotors in the foam discharge side of the foam pump shall provide the

targets to pulse the sensor to generate a feedback signal.

The distribution box shall receive 12 volt direct current power from the apparatus electrical system as the

only source of power to operate the system and power component sensors. Control power shall be

distributed to the control unit, flow meter sensor and foam concentrate feedback sensor through a conductor

in the 100% electrically shielded cable sets provided by the foam proportioner manufacturer. The

microprocessor in the control unit shall process input signals from the flow meter sensor and foam feedback

sensor to determine the proper duty cycle for the electric motor to run. The distribution box shall provide

power to the electric motor, based on signals received from the control unit, at a variable rate to ensure that

the correct proportion of foam concentrate, preset by the pump operator on the control unit, is injected into

the water pump discharge stream. The distribution box shall have a main power control switch and over

current protection for the foam proportioning system. All primary electrical wires for the foam concentrate

system shall be type SXL or GXL (SAE J1128) per NFPA requirements. Electrical connections shall be

made using heavy duty 5/16 inch diameter studs and nuts.

WATER TANK

The water tank shall be "L" shaped and shall have a maximum capacity of 900 US gallons.

TANK LID & FILL TOWER

The tank shall have a combination vent and fill tower. The fill tower shall be constructed of 1/2” thick

Polyprene and shall be a minimum dimension of 8”x 8” outer perimeter. The tower shall have a 1/4” thick

removable Polyprene; screen and a Polyprene hinged-type cover. Inside the fill tower, there shall be a

combination vent overflow pipe. The vent overflow shall be a minimum of schedule 40 pipe with a

minimum ID of 4” that is designed to run through the tank, and shall be piped behind the rear axle beneath

the tank.

The tank cover shall be constructed of recessed 1/2” thick white Polyprene & Mac226, stress relieved, UV

stabilized material. A minimum of two lifting dowels shall be drilled and tapped to accommodate the lifting

eyes.

OVERFLOW AND VENT PIPE

The fill tower shall be fitted with an integral 4" ID, Schedule 40 PVC combination overflow/vent pipe

running from the fill tower through the tank to a 4" coupling flush mounted into the bottom of the tank to

allow water to overflow beneath the chassis.

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Audiovox AOM-713WP Specifications Page 146

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