SANDPIPER ELECTRO-PNEUMATIC SPEED CONTROL SYSTEM User Manual

SERVICE AND OPERATING MANUAL

ELECTRO-PNEUMATIC SPEED

The Warren Rupp Electro-Pneumatic Speed Control System
can be used to control SandPiper® Pumps, as well as most other
air-operated, double diaphragm pumps on the market. The Warren
Rupp Speed Control offers several benefi ts:

· Easy to Install and Operate.

· Increases Flexibility of Entire System.

· Variable Flow Rate Control.

· NEMA 4X Rated Controls.

· Manual Mode

(On-Board, Single-Turn Potentiometer).

· Or Automatic Mode

(Optional 4-20mA Input Terminal).

· Operates on 110 OR 220 VAC Power.

CONTROL SYSTEM

· Rated for maximum inlet pressures of 125 psi.

PRINCIPLE OF

OPERATION

The Warren Rupp Electro­Pneumatic Speed Control System is
comprised of three components that
operate with most diaphragm pumps
to optimize operational variable fl ow
rate demands.

The fi rst component is an
electronically operated proportional
pilot valve that utilizes patented tech­nology to provide extremely accurate
pneumatic control in a NEMA 4X
rated container. (See Figure 1.)

The second component is
a diaphragm, air-piloted pressure
regulator that offers higher fl ow rates
that translate into faster responses.
(See Figure 2.)

CAUTION!

Always disconnect

power before working

on units.

032-022-000 (110V)

032-023-000 (220V)

For ½ " through 4" Pumps

Pressure Regulator Port: 1"

Pilot Valve

Figure 1

WARREN RUPP, INC. • A Unit of IDEX Corporation • P.O. Box 1568 • Mansfi eld, OH 44901 USA • [phone] Fax [phone]

www.warrenrupp.com

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Speed Control Page 1

NOTE! The plug must be removed from the
relief port before operation of the unit.

The third component is the NEMA 4X rated
enclosure housing the power supply necessary
for the proportional valve as well as a control
potentiometer for manual operation. A switch on
the enclosure allows the user to select between
manual control via the provided potentiometer or
a remote control from a user supplied source,
such as a process controller supplying a 4-20
mA signal. (See Figure 3.) A 25-foot length
of electrical cable to the proportional valve is
provided. (See Installation Guide.)

1" Port Model

Figure 3

Figure 2

WARREN RUPP, INC. • A Unit of IDEX Corporation • P.O. Box 1568 • Mansfi eld, OH 44901 USA • [phone] Fax [phone]

www.warrenrupp.com

spdctrol-rev0808

Speed Control Page 2