SECTION 1 INTRODUCTION

ADDENDUM #4 SCIENCO R/A ON-SITE SODIUM HYPOCHLORITE GENERATOR

TM-55-1930-209-14P-4 Water Purification Barges (NSN 1930-01-234-2165) Winch Double Drum Diesel Engine Driven 40 000 lb Capacity Connmaco Model 270 Manual
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SECTION 1 INTRODUCTION Electric capacity controls for mRoy metering pumps consist of a family of controls to adjust the flow rate of the pumps in accordance with manual or electronic input signals. This control is achieved by use of two distinct, separate devices: the actuator and the controller. The actuator mounts on the pump body and contains a reversible motor to drive the pump capacity adjustment. The controller, which can be mounted remotely, contains electronic circuitry to accept an input signal and commands the actuator to drive to a corresponding position. Two actuators are described in this manual, one for the mRoy A and one for the larger mRoy B. Five types of controllers are described, any one of which will control either actuator. Figure 1. mRoy A Simplex and Duplex Pumps with Electric Capacity Control Actuator Assemblies 1

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