Goulds Pumps VIT - IOM - Manual (Page 20)

Check Explanation/comment Checked
If the pump handles liquids at
elevated temperatures, make sure
that the expansion loops and
joints are properly installed.
This helps to prevent misalignment due to thermal
expansion of the piping.
Make sure that all piping
components, valves and fittings,
and pump branches are clean
prior to assembly.
—
Discharge-piping checklist
Checklist
Check Explanation/comment Checked
Check that an isolation valve is
installed in the discharge line.
The isolation valve is required for:
• Priming
• Regulation of flow
• Inspection and maintenance of the pump
Check that a check valve is installed in
the discharge line, between the
isolation valve and the pump discharge
outlet.
The location between the isolation valve and the
pump allows inspection of the check valve.
The check valve prevents damage to the pump and
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.
If increasers are used, check that they
are installed between the pump and the
check valve.
—
If quick-closing valves are installed in
the system, check that cushioning
devices are used.
This protects the pump from surges and water
hammer.
If increasers are used, they must be of
the eccentric type.
This prevents air from collecting at the top of the
discharge pipe.
Install a partially-assembled pump
Pumps 20 feet (6 meters) or less in length are usually shipped partially assembled, with the exception of
these parts:
• Driver
• Packing
• Mechanical seal with piping
• Coupling assembly, spacer or non-spacer type
Refer to the Certified Pump Outline Drawing for the location of the anchor-bolt holes.
1. If a sub-base is supplied, install it.
2. Clean the sub-base and the bottom of the discharge head base.
3. Attach shackles to the discharge hand lifting lugs or thread two eye bolts through the bolt holes in the
mounting flange.
4. Hoist the unit into position over the foundation.
Make sure that the shackles, eye bolts, and sling are rated to handle in excess of the pump weight. See
the outline drawing.
5. Carefully guide the unit so that it does not strike the sides of the sub-base or foundation.
6. Lower the unit until the discharge-head flange engages and rests firmly on the sub-base or foundation,
then secure it with the capscrews provided.
7. When a lineshaft is shipped separately, complete these steps:
Installation (Continued)
18 Model VIT Installation, Operation, and Maintenance