Goulds Pumps 3296 EZMAG - IOM - Manual (Page 33)

Installation
Discharge piping checklist
Checklist
Check Explanation/comment Checked
Check that an isolation valve is in- The isolation valve is required for:
stalled in the discharge line. • Priming
• Regulation of flow
• Inspection and maintenance of the pump
See Example: Discharge piping equipment for
illustrations.
Check that a check valve is installed in The location between the isolation valve and the
the discharge line, between the isola-
pump allows inspection of the check valve.
tion valve and the pump discharge The check valve prevents damage to the pump and
outlet. seal due to the back flow through the pump, when
the drive unit is shut off. It is also used to restrain
the liquid flow.
See Example: Discharge piping equipment for
illustrations.
If increasers are used, check that they See Example: Discharge piping equipment for
are installed between the pump and
illustrations.
the check valve.
If quick-closing valves are installed in
This protects the pump from surges and water
the system, check that cushioning de- hammer.
vices are used.
Example: Discharge piping equipment
Correct Incorrect
1. Check valve (incorrect position)
1. Bypass line
2. The isolation valve should not be positioned
2. Shut-off valve
between the check valve and the pump.
3. Check valve
4. Discharge isolation valve
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 Rotate the shaft by hand. Make
smoothly. sure there is no rubbing that can
lead to excess heat generation or
sparks.
Model 3296 EZMAG Installation, Operation, and Maintenance Manual 31