Xylem P81875F Series HSC and HSC-S Centrifugal Pump User Manual
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CHANGING ROTATION
Series HSC and HSC-S centrifugal pumps can be operated
left hand or right hand when viewed from the pump 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 proce-
dures 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. (NOTE: Impeller can only come off from the
outboard end.)
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.
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.
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.
ROTATION
ROTATION
DISCHARGE
DISCHARGE
SUCTION
LEFTHAND ROTATION VIEWED
FROM THE PUMP END
RIGHTHAND ROTATION VIEWED
FROM THE PUMP END
Illustration 9 – Correct Relationship of Impeller and Casing
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Illustration 10 – Main Joint Bolts