Hydrotech C, C PLUS, A PLUS, E, E-DC and E PLUS Series PULSAtron User Manual

Page 6

2.0 UNPACKING THE PUMP

Check all equipment for completeness against the order and for any evidence of shipping
damage. Shortages or damages should be reported immediately to the carrier and to the
seller of the equipment.

The carton should Contain:

-Metering Pump
-Clear Flexible Suction Tubing*
-Stiff White Discharge Tubing*
-Foot valve/Strainer Assembly
-Backpressure Injection
Valve Assembly
-Manual
-Bleed Valve Assembly*
-Strainer Weight*

*Items may or may not be included depending on model.

Make sure that all items have been removed from the shipping carton before it is discarded.

3.0 INTRODUCTION

These installation, operation and maintenance instructions cover your electronic metering
pump. Refer to the pump data label to determine the actual model.

3.1 PRINCIPLE OF OPERATION

Diaphragm metering pumps are used to dispense chemicals or fluids. This is
achieved by an electromagnetic drive mechanism (solenoid), which is connected to
a diaphragm. When the solenoid is pulsed by the control circuit it displaces the
diaphragm, which, through the use of check valves, moves the fluid out the
discharge under pressure. When the solenoid is de-energized it returns the
diaphragm and pulls more fluid into the pump head and the cycle repeats.

The pump stroke rate is controlled by an internal circuit and is changed by turning
the rate knob. The mechanical stroke length is controlled by the stroke length
knob. Some models do not allow stroke rate control and do not have the stroke
rate knob.

3.2 MATERIALS OF CONSTRUCTION

The wetted materials (those parts that contact the solution being pumped)
available for construction are FPP (glass filled polypropylene), PVC, SAN,
Hypalon, Viton, Teflon, 316 Stainless Steel, PVDF, Ceramic and Alloy C. These
materials are very resistant to most chemicals. However, there are some chemicals,
such as strong acids or organic solvents, which cause deterioration of some
elastomer and plastic parts, such as the diaphragm, valve seats, or head.

FIGURE 1