Check
Explanation/comment
Checked
If quick-closing valves are installed in the
system, check that cushioning devices are
used.
This protects the pump from surges and water hammer.
Example: Discharge piping equipment
Correct
Incorrect
1
2
3
4
1.
Bypass line
2.
Shut-off valve
3.
Check valve
4.
Discharge isolation valve
2
1
1.
Check valve (incorrect position)
2.
The isolation valve should not be positioned be-
tween the check valve and the pump.
4.5.5 Final piping checklist
WARNING:
A build-up of gases within the pump, sealing system, or process piping system may result in
an explosive environment. Make sure the process piping system, pump and sealing system are
properly vented prior to operation.
Check
Explanation/comment
Checked
Check that the shaft rotates smoothly.
Rotate the shaft by hand. Make sure there is no rubbing that
can lead to excess heat generation or sparks.
Re-check the alignment to make sure that
pipe strain has not caused any misalign-
ment.
If pipe strain exists, then correct the piping.
4.5 Piping checklists
36
Model 3296 EZMAG Installation, Operation, and Maintenance Manual