Flowserve Polybase baseplates - Manual (Page 20)

Polybase Baseplate INSTRUCTIONS ENGLISH 71569284 – 12-10
Page 20 of 24 flowserve.com
7 FAULTS: CAUSES AND REMEDIES
TROUBLESHOOTING
The following is a guide to troubleshooting problems with Flowserve Polybase baseplates. Common problems
are analyzed and solutions offered. Obviously, it is impossible to cover every possible scenario. If a problem
exists that is not covered by one of the examples, then contact a Flowserve Sales Engineer or
Distributor/Representative for assistance.
FAULT SYMPTOM
Threaded insert is chemically attacked
Threaded insert pulls out
Corner of baseplate breaks off
Baseplate breaks during rigging
Motor is bolt bound and alignment is not possible
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⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓
⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓
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PROBABLE CAUSES POSSIBLE REMEDIES
Leaking product.
Fix leak source. Replace the damage insert(s) per the
direction given in Section 6.3.
High vibration combined with excessive
mounting forces.
Reduce the amount of vibration energy in the system.
Only torque bolts to the values recommended in Section
6.5.
Anchor bolts or nuts are tightened too much
prior to grouting.
Do not tighten the anchor bolt or nuts prior to grouting.
Arrange the shims under the baseplate so that they are
directly under the anchor studs or bolts to prevent a
bending moment from over tightening.
Rough handling of the Polybase baseplate. Follow the handling recommendations in Section 2.
Piping loads are too large.
Construct suction and discharge piping so that the
flanges mate to the pump without inducing high loads.
Motor studs are not perpendicular to the
baseplate.
For small diameter studs, they can be lighted impacted
with a rubber mallet to bend them slightly (with the motor
removed) to facilitate alignment. Larger stud diameters
will require the motor foot holes be enlarged or the
baseplate to be reworked or replaced.