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INSTALLATION — DUAL PUMP
(1) Select the desired location to mount the control box — should not be more than 6 ft (2 meters) from the floor.
(2) Mount the control box using the hardware provided or other mounting hardware as needed.
(3) Route the Polyethylene suction and discharge the tubing through the openings in the bottom of the case to quick
connect type suction and discharge ports on the air pump. Limit the length of suction line to a maximum of eight
feet. Use the high density 3/8" O.D. Polyethylene tubing.
(4) Route the discharge line to supply pipe or disperse valve accordingly.
(5) Connect the air supply to the 1/4" NPT inlet valve on the right side of the unit. Be sure to use clean dry air only!
The remaining steps are for vacuum switch equipped units only
(6) Mount the vacuum switch enclosure in a convenient location and nearby to a 115 VAC outlet.
(7) Connect tubing from the vacuum source (pipeline) to the barb fitting on the vacuum switch enclosure. Route the
tubing carefully to avoid pinching the tube at any point.
(8) Wire the vacuum switch enclosure to the pump unit as shown in the wiring diagram below. Be sure to route the
wire through the provided strain relief fittings on both the switch enclosure and pump unit.
(9) Plug the transformer into the outlet.
OPERATION — DUAL PUMP
(1) Turn the air inlet valve on (counter-clockwise till handle is vertical) to operate the pump — for units with a
selector valve, choose which pump will be used.
(2) This step is for vacuum switch equipped units only: The pump will run whenever there is vacuum present, or
when the over-ride switch (toggle switch) is turned on. The tee-handle valve on the vacuum switch enclosure
should be in the vertical position for normal operation, but can be used to by-pass the vacuum switch by turning
to the horizontal position. This allows the unit to be controlled by the over-ride switch only.
(3) The air pump will typically be easier to prime when running at a slower speed. The speed and volume delivery of
the pump can be controlled by turning the regulator clockwise to increase pressure and counter-clockwise to
decrease pressure.
(4) Once the pump is primed, adjust the air pressure as needed to achieve the desired feed rate.
Page 4 of 8
0901159 Rev: B (03/05)
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