Bell & Gossett P71396C Series 80-SC Spacer-Coupled Vertical In-Line Centrifugal Pump - Manual (Page 13)

Installation
Preinstallation
Precautions
WARNING:
• When installing in a potentially explosive environment, make sure that the motor is
properly certified.
• You must earth (ground) all electrical equipment. This applies to the pump
equipment, the driver, and any monitoring equipment. Test the earth (ground) lead to
verify that it is connected correctly.
• Motors without built-in protection must be provided with contactors and thermal
overload protection for single-phase motors, or starters with heaters for three-phase
motors. (See the nameplate on the drive unit to select properly-sized overloads.)
NOTICE:
Supervision by an authorized Xylem representative is recommended to ensure proper
installation. Failure to do so may result in equipment damage or decreased performance.
Evaluate the installation in order to determine that the Net Positive Suction Head Available
(NPSH
A
) meets or exceeds the Net Positive Suction Head Required (NPSH
R
), as stated by
the pump performance curve.
Pump mounting guidelines
Series 80–SC pumps can only be mounted with the motor shaft vertical (motor shaft
down).
The optional Integrated Technologic with Sensorless Control (ITSC) can be oriented to
different positions relative to the pump nozzles. This can be easily changed during pump
installation by removing the motor mounting capscrews, raising the motor assembly
slightly, 0.015 to 0.030” (if needed), and rotating the motor assembly around the pump
centerline. Raising the motor assembly more than 0.030” could damage the mechanical
seal. Replace the motor capscrews when the preferred position is determined.
CAUTION:
The pump and motor assembly must be properly supported during this procedure to
prevent the pump unit or motor assembly from falling. Failure to properly support the
pump and motor assembly could result in personal injury and or property damage.
Pump location guidelines
WARNING:
Assembled units and their components are heavy. Failure to properly lift and support this
equipment can result in serious physical injury and/or equipment damage. Lift equipment
only at the specifically identified lifting points. Lifting devices such as eyebolts, slings, and
spreaders must be rated, selected, and used for the entire load being lifted.
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.
Installation
Series 80-SC Installation, Operation, and Maintenance Manual 11