Bell & Gossett P2001406C Series e-1510 Centrifugal Pumps - Manual (Page 19)

Pump-to-driver alignment
Precautions
WARNING:
• Follow shaft alignment procedures in order to prevent catastrophic failure of drive
components or unintended contact of rotating parts. Follow the coupling installation
and operation procedures from the coupling manufacturer.
• Always disconnect and lock out power to the driver before you perform any
installation or maintenance tasks. Failure to disconnect and lock out driver power will
result in serious physical injury.
NOTICE:
Proper alignment is the responsibility of the installer and the user of the unit. Check the
alignment of frame-mounted units before you operate the unit. Failure to do so can result
in equipment damage or decreased performance.
Alignment checks
When to perform alignment checks
You must perform alignment checks under these circumstances:
• The process temperature changes.
• The piping changes.
• The pump has been serviced.
Types of alignment checks
Type of check When it is used
Initial alignment (cold alignment)
check
Prior to operation when the pump and the driver are at ambient
temperature.
Final alignment (hot alignment)
check
After operation when the pump and the driver are at operating temperature.
Initial alignment (cold alignment) checks
When Why
Before you grout the baseplate This ensures that alignment can be accomplished.
After you grout the baseplate and
tighten the anchor bolts
This ensures that no changes have occurred during the grouting process.
After you connect the piping This ensures that pipe strains have not altered the alignment.
If changes have occurred, you must alter the piping to remove pipe strains on
the pump flanges.
Final alignment (hot alignment) checks
When Why
After the first run This ensures correct alignment when both the pump and the driver are at
operating temperature.
Periodically This follows the plant operating procedures.
Installation
Series e-1510 Installation, Operation, and Maintenance Manual 17