Pentair ISO PRO Installation, Operation And Maintenance Manual page 20

Iso 5199 standard centrifugal pumps
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ISO PRO Centrifugal Pump
Section 5....................................................................................Installation
ANGULAR
MISALIGNMENT
The alignment is achieved by adding or removing shims under the motor feet and also moving the
motor horizontally as required. In some cases where the alignment cannot be achieved it will be
necessary to move the pump before recommencing the above procedure.
5.2 Shims
The shims between the equipment feet and mounting surface should be clean and dry. This is
especially critical for pumps in service for some time and need to be realigned. Water, dirt and rust
may change the height of the shim pack over a period of time. Shims should be made large enough
to support the weight of the equipment on its mounting foot. Do not use many thin shims as this may
result in a spongy mounting. Move the equipment vertically by adding or removing the calculated
thickness of shims.
6. ASSEMBLE COUPLING
a) Assemble coupling as per the manufacturer's instructions.
b) Install coupling guard
7. PIPING
DO NOT USE PUMP AS A SUPPORT FOR PIPING
7.1 Piping Good Practice
a) In order to minimise friction losses and hydraulic noise in the pipework it is a good practice to
choose pipework that is one or two sizes larger than the pump suction and discharge.
b) Typically main pipework velocities should not exceed 2 m/s suction and 3 m/s on the discharge.
7.2 Suction Piping
a) The inlet pipe should be one or two sizes larger than the pump inlet bore and pipe bends should be
as large radius as possible.
b) Double bends must be avoided in suction line and a straight run of pipe, equal to 8 or 10 times the
PARALLEL
MISALIGNMENT
CORRECT
ALIGNMENT
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