Pentair Berkeley Manual Del Usuario página 6

Installation • Direct Coupling Drive
Centerline
Course Alignment
Rotating shaft can catch and trap
clothing or body. Coupling guard must ALWAYS be in
place when pump is running. Coupling guard shown in
phantom for pictorial clarity.
ALIGNMENT OF PUMP AND MOTOR SHAFT
• A flexible coupling (except for double universal joint
shaft) will not compensate for misalignment. After
the pump unit is fastened on the foundation, it is
necessary to see that the shafts of the pump and
motor are properly aligned.
• Each motor and pump foot should be shimmed to
avoid shifting or soft foot.
COURSE ALIGNMENT
• By moving the entire unit, bring suction and discharge
openings of the pump into alignment with the system
piping. Pipes should align without force with the pump
(see Installation Section).
• Bring the pump and motor shaft into approximate
alignment by shifting or shimming the motor. Use a
straight edge to check alignment of the shafts.
• Use calipers, or a wedge thickness gauge to check
the distance between coupling halves. The distance
between halves should be equal at 90 degree
intervals around the coupling, and the shafts should
be concentric when checked with a straight edge.
Straight Edge
Caliper
FINE ALIGNMENT
• Angular and parallel misalignment of the coupling
• Check and account for indicator sag.
• Clamp dial indicators to the pump and motor shaft as
• Start with angular alignment and finish check with
• Rotate both the shaft and coupling together by hand.
• Continue to rotate both shafts by hand and notice
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Fine Alignment
may be corrected simultaneously. Maintain
a separation between coupling halves, per
manufacturer's specifications, to avoid pre-loading of
pump and motor bearings.
shown above.
parallel alignment.
Notice the total indicated run-out shown on indicator
"A". The maximum allowable angular misalignment is
1 degree. Limits of reading on indicator "A" at various
distances from shaft center-line are shown in Table I.
the run-out shown on indicator "B". The maximum
allow-able total indicated run-out is .005 inches.
Should either angular or parallel misalignment
exceed the value shown, shift or shim the motor until
misalignment is within the allowable limits shown. Do
not move pump unless absolutely necessary. When
shimming, be sure that all feet on the pump and
motor are equally supported to avoid strains on the
castings when the hold down bolts are tightened.
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