Installation
Check
Explanation/comment
Checked
Check that only necessary fittings This helps to minimize friction losses.
are used.
Do not connect the piping to the
—
pump until:
• The grout for the baseplate or
sub-base becomes hard.
• The hold-down bolts for the
pump are tightened.
Make sure that all the piping joints This prevents air from entering the piping system or
and fittings are airtight.
leaks that occur during operation.
If the pump handles corrosive
fluids, make sure that the piping
allows you to flush out the liquid
before you remove the pump.
If the pump handles liquids at
elevated temperatures, make
sure that the expansion loops and
joints are properly installed.
Alignment criteria for pump flanges
Type
Criteria
Axial
The flange gasket thickness is ±0.03 in. (0.8 mm).
Parallel
Align the flange to be within 0.001 in./in. to 0.03 in./
in. (0.025 mm/mm to 0.8 mm/mm) of the flange
diameter.
Concentric
You can easily install the flange bolts by hand.
Fastening
WARNING:
• Only use fasteners of the proper size and material.
• Replace all corroded fasteners.
• Make sure that all fasteners are properly tightened and that there are no missing fasteners.
Suction-piping checklist
Performance curve reference
CAUTION:
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.
Net positive suction head available (NPSH
A
) must always exceed NPSH required (NPSH
R
) as
shown on the published performance curve of the pump.
Suction-piping checks
Check
Explanation/comment
Checked
Check that elbows in general do
not have sharp bends.
Check that the suction piping is
The suction piping must never
one or two sizes larger than the
have a smaller diameter than the
suction inlet of the pump.
suction inlet of the pump.
Install an eccentric reducer be-
tween the pump inlet and the
suction piping.
Check that the eccentric reducer
at the suction flange of the pump
has the following properties:
• Sloping side down
• Horizontal side at the top
Model 3610, API Type BB1 API 610 11th Edition Installation, Operation, and Maintenance Manual
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