Xylem 9100 Series Base Mounted Centrifugal Fire Pumps AC User Manual download pdf (Page 22)

CHANGING ROTATION

9100 Series Centrifugal Fire Pumps can be

operated clockwise or counter-clockwise when

viewed from the coupling end of the pump. If you

wish to reverse the suction and discharge nozzles,

this can be accomplished with the same pump as

follows:

IMPORTANT: Refer to the disassembly and

assembly procedures section of this manual for

proper disassembly and assembly techniques:

1. Remove the impeller from the shaft, turn it

180° and replace it on the shaft. (Follow the

disassembly procedures given in this manual.)

2. With the rotating element out of the

casing, remove the casing from the

bedplate and turn 180°.

3. Set the rotating element back in the

casing and reassemble the pump.

NOTE: The impeller and casing are in the same

relationship to each other as they were originally.

The shaft and motor are also in the same

relationship to each other as they were originally.

4. Reassemble pump and realign the

coupling as called for in the alignment

instructions.

WARNING: Rotating Components Hazard

Do not operate pump without all guards in

place. Failure to follow these instructions could result

in serious personal injury or death and property

damage.

5. The rotation of the motor must be changed

by switching the motor leads.

NOTE: Unless the motor rotation is reversed, the

impeller will run backward.

CCW

ROTATION

SUCTION

DISCHARGE

CLOCKWISE ROTATION VIEWED

FROM THE COUPLING END

COUNTER-CLOCKWISE ROTATION

VIEWED FROM THE COUPLING END

FIGURE 10 - CORRECT RELATIONSHIP OF IMPELLER AND CASING

FIGURE 11 - MAIN JOINT BOLTS

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 36 37

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Xylem 9100 Series Base Mounted Centrifugal Fire Pumps AC User Manual Page 22

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