3.5.2.1
Diaphragm Type
The head of the pump shall be of corrosion-resisting plastic material that
will not react with the hypochlorite solution. The diaphragm of the feeder
shall be chemical resistant material or chloroprene synthetic elastomer.
Foot valve and strainer shall be provided where necessary.
3.5.2.2
Peristaltic Type
Pump shall be of the direct-feed tube type. All parts that which come in
contact with the hypochlorite solution shall be chemically resistant
plastic or synthetic rubber.
3.5.2.3
Motor
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NOTE: Insert electrical power characteristics.
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Motor shall be constant speed, totally enclosed, horizontal type, suitable
for outdoor service, and conforming to NEMA MG 1. The motor shall be of
adequate wattage horsepower to drive the feed pump continuously at the
maximum load encountered under any operating condition without overloading
or exceeding the nameplate rating of the motor. Motor shall be suitable
for operation on [_____] volt, [_____] phase, [_____] Hertz service. Motor
shall be protected against overload, low voltage, and unbalanced voltage.
Motor shall be either direct-connected to pump or provided with V-belt
drive.
3.5.3
Accessories
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NOTE: Use 113.4 L 30 gallon mixing tank capacity
unless larger tank is necessary.
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NOTE: Use 189 or 208 L 50 or 55 gallon solution
tank capacity unless larger tank is necessary.
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NOTE: Delete requirements for heating for plants in
areas where freezing temperatures are not
encountered.
**************************************************************************
Solution and mixing tanks and covers shall be of polyethylene plastic or
fiberglass with foam insulation. Solution mixing tank shall have electric
motor-driven mixer with stainless steel shaft and impeller; capacity shall
be [113.4 L] [[_____] L] [30 gallons] [[_____] gallons]. Hypochlorite
solution tank shall have a capacity of [189 L or 208 L] [[_____] L] [50
gallons or 55 gallons] [[_____] gallons]. Suction, discharge, and siphon
tubing shall be of translucent polyethylene plastic or nylon reinforced
plastic capable of withstanding 1034 kPa 150 psi internal pressure at 54.5
degrees C 130 degrees F. Diffuser shall be located at the inlet to the
chlorine contact tank and shall be of rigid PVC or ABS pipe resistant to
chlorine solution. The diffuser shall be perforated and of the open
SECTION 11375N
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