Bell & Gossett P81629F Series 80 In-Line Mounted Centrifugal Pump - Manual (Page 15)

Guideline Explanation/comment
Keep the pump as close to the liquid source as practically
possible.
If the pump is not on a closed system, locate the pump so
that the fewest number of bends or elbows in the suction
pipe are needed.
This minimizes the friction loss and keeps the suction
piping as short as possible.
Make sure that the space around the pump is sufficient. This facilitates ventilation, inspection, maintenance, and
service.
If you require lifting equipment such as a hoist or tackle,
make sure that there is enough space above the pump.
This makes it easier to properly use the lifting equipment
and safely remove and relocate the components to a safe
location.
Protect the unit from weather and water damage due to
rain, flooding, and freezing temperatures.
This is applicable if nothing else is specified.
Do not install and operate the equipment in closed
systems unless the system is constructed with properly-
sized safety devices and control devices.
Acceptable devices:
• Pressure relief valves
• Expansion tanks
• Pressure controls
• Temperature controls
• Flow controls
If the system does not include these devices, consult the
engineer or architect in charge before you operate the
pump.
Take into consideration the occurrence of unwanted noise
and vibration.
The best pump location for noise and vibration
absorption is on a concrete floor with subsoil
underneath.
If the pump location is overhead, undertake special
precautions to reduce possible noise transmission.
Consider a consultation with a noise specialist.
When possible, locate the pump below the fluid level. This facilitates priming, ensures a steady flow of liquid,
and provides a positive suction head on the pump.
Piping checklist
WARNING:
• The heating of water and other fluids causes volumetric expansion. The associated
forces can cause the failure of system components and the release of high-
temperature fluids. In order to prevent this, install properly sized and located
compression tanks and pressure-relief valves. Failure to follow these instructions can
result in serious personal injury or death, or property damage.
• Avoid serious personal injury and property damage. Make sure that the flange bolts
are adequately torqued.
• Never force piping to make a connection with a pump.
Check Explanation/comment Checked
Check that a section of straight pipe, with a length that
is five times its diameter, is installed between the
suction side of the pump and the first elbow, or that a
B&G Suction Diffuser is installed.
This reduces suction turbulence by
straightening the flow of liquid before it enters
the pump.
Check that the suction and discharge pipes are
supported independently by use of pipe hangers near
the pump .
This eliminates pipe strain on the pump .
Check that there is a strong, rigid support for the
suction and discharge lines.
As a rule, ordinary wire or band hangers are not
adequate to maintain proper alignment.
For pumps with flanges, check that the bolt holes in
the pump flanges match the bolt holes in the pipe
flanges.
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Installation
Series 80 Installation, Operation, and Maintenance Manual 13