Goulds Pumps 3296 EZMAG - IOM - Manual (Page 30)

Installation
Checklist
Check Explanation/comment Checked
Check that all piping is supported This helps to prevent:
independently of, and lined up
• Strain on the pump
naturally with, the pump flange. • Misalignment between the pump and the drive unit
• Wear on the pump bearings, seal, and shafting
Keep the piping as short as pos- This helps to minimize friction losses.
sible.
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 and the driver are tight-
ened.
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
This helps to prevent misalignment due to linear expan-
elevated temperatures, make sion of the piping.
sure that the expansion loops and
joints are properly installed.
Example: Installation for expansion
Correct Incorrect
1. Expansion loop/joint
Suction-piping checklist
Performance curve reference
Net positive suction head available (NPSH
A
) must always exceed NPSH required (NPSH
R
) as
shown on the published performance curve of the pump.
Refer to the Hydraulic Institute for NPSH and pipe friction values needed in order to evaluate
suction piping.
28 Model 3296 EZMAG Installation, Operation, and Maintenance Manual