Thrush Horizontal Water CCirculators User Manual download pdf

8/08

Peru, IN 46970 (765) 472-3351

www.thrushco.com

Thrush Co., Inc.

P.O. Box 228 * 340 West 8th St.

9636-0270

INSTALLATION & OPERATING INFORMATION

HORIZONTAL WATER CIRCULATOR

CASING POSITIONS

Installing Circulator

This circulator is shipped from the factory with the casing set for mounting in a vertical pipe as

shown above. When the circulator is to be installed in a horizontal pipe, turn casing 1/4 turn to right

or left according to direction of the flow. MOTOR MUST ALWAYS REMAIN IN THE SAME POSITION

WITH OIL CUPS UP. Install flanges on pipe before connecting flanges to circulator casings. Be

sure ring gaskets are in place on casing before drawing up flange bolts. The circulator should be

supported only by the piping in which it is installed. DO NOT ADD SUPPORT TO THE MOTOR.

Lubrication

Oil all three cups before starting and every three months thereafter. Fill motor oil cups with S.A.E.

#20 non-detergent oil. Use S.A.E. #30 non-detergent oil for the bracket or the zoom spout oiler

that comes with the circulator or bracket assembly. For high temperature or continuous operation,

more frequent oiling will be necessary.

Wiring

Circulator motors have openings for BX connector and two wiring posts under terminal cover. Be

sure two lead wires are securely fastened under terminal nuts. DO NOT CONNECT SOLID

CONDUIT TO CIRCULATOR MOTOR. Use 18" of flexible conduit between end of solid conduit and

the motor.

Motor Rotation

All motors on Thrush circulators have counter-clockwise rotation looking at shaft end. W hen looking

at motor end, rotation will be clockwise.

Caution

Mechanical seal life is affected adversely by the presence of abrasive impurities in the system. One

of the most common abrasive is black iron oxide (FE3O4). Another important factor in seal life is

water treatment. It is recommended that the chromate content of the system does not exceed 250

P.P.M.

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8/08Peru, IN 46970 (765) 472-3351www.thrushco.comThrush Co., Inc.P.O. Box 228 * 340 West 8th St.9636-0270INSTALLATION & OPERATING INFORMATIONH

To Remove and Reinstall MotorHORIZONTAL WATER CURCULATOR1. Turn off the electrical current and disconnect wiring to motor.2. Loosen set screw "B&

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Thrush Horizontal Water CCirculators User Manual