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Installation Instructions for the MOTORIZED Simple Pump System
(Scotch Yoke Drive option)
page 6

Section 5: Electrical Connection

Notice there is a terminal block on the inside of the stainless enclosure in the photos directly right and directly below this text. Make the necessary electrical connections there.

The photo in the bottom right corner shows the terminal block covered by a rectangular stainless steel junction box. This junction box arrives attached to the motorized system with SYD mechanism. In the other two pictures, it was removed prior to this installation, so that the electrical connections could be made.

The junction box has a 7/8" diameter access hole intended to accommodate 1" electrical conduit for the two wires feeding the unit with 12VDC or 24VDC power.

Attach your positive and negative power leads to the terminal block so that the final output rotation is counter-clockwise. This rotation direction will provide a constant tightening torque on the driven cam roller and will prevent the cam roller from walking off of the crank arm.

A counter-clockwise rotation direction will also take advantage of the up angle on the scotch yoke and will reduce the amperage draw slightly.

Make sure that the wiring from your power source is at least 16 gauge, and can maintain a minimum of 11.5 volts with the 12VDC motor at a full load of 15 Amps, or 23.5 volts with the 24VDC motor at a full load of 8 amps. Note that the greater the distance to the power source, the higher gauge wire required. Also, at 24 volts, line loss is significantly lower compared to 12 volts. For example, at the same power draw and distance, 24V DC transmission requires a lesser gauge wire, compared to 12V.


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SIMPLE PUMP COMPANY, LLC
1140 Amarillo Drive, Gardnerville, Nevada 89460-7504