•
Ensure that all fasteners are properly tightened and that there are no missing fas-
teners.
CAUTION:
Never draw piping into place at the flanged connections of the pump. This can impose danger-
ous strains on the unit and cause misalignment between the pump and driver. Pipe strain ad-
versely affects the operation of the pump, which results in physical injury and damage to the
equipment.
NOTICE:
Vary the capacity with the regulating valve in the discharge line. Never throttle the flow from the
suction side. This action can result in decreased performance, unexpected heat generation,
and equipment damage.
Piping guidelines
Guidelines for piping are given in the Hydraulic Institute Standards available from the Hydraulic Institute
at 9 Sylvan Way, Parsippany, NJ 07054-3802. You must review this document before you install the
pump.
Checklist
Check
Explanation/comment
Checked
Check that all piping is supported in-
dependently of, and lined up naturally
with, the pump flange.
This helps to prevent:
•
Strain on the pump
•
Misalignment between the pump and the drive unit
•
Wear on the pump bearings, seal, and shafting
Keep the piping as short as possible. This helps to minimize friction losses.
Keep the piping as straight as possi-
ble. Avoid unnecessary bends. Use
45° or long radius 90° fittings where
necessary.
This helps to minimize friction losses.
Check that only necessary fittings are
used.
This helps to minimize friction losses.
Make sure that the inside diameters
match properly when you use flange
joints.
—
Do not connect the piping to the
pump until:
•
The grout for the foundation
and sole plate has hardened
for at least 48 hours.
•
The grout for the barrel or sub-
base has hardened.
•
The anchor bolts for the sub-
base to the foundation have
been tightened.
•
Hold-down bolts for the suction
barrel to the sub-base have
been tightened.
—
4.1 Pre-installation
Model VICR Installation, Operation, and Maintenance Manual
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