Pump-To-Driver Alignment; Alignment Checks - Goulds Pumps 3700 Installation, Operation And Maintenance Manual

Pump-to-driver alignment

Precautions
WARNING:
• Follow shaft alignment procedures in order to prevent catastrophic failure of drive components or
• Always disconnect and lock out power to the driver before you perform any installation or
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 methods
Three common alignment methods are used:
• Dial indicator
• Reverse dial indicator
• Laser
Follow the instructions from the equipment manufacturer when you use the reverse dial
indicator or laser methods. Detailed instructions for using the dial indicator method are
contained in this chapter.

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
Initial alignment (cold alignment)
check
Final alignment (hot alignment)
check
Initial alignment (cold alignment) checks
When
Before you grout the baseplate
After you grout the baseplate
After you connect the piping
Final alignment (hot alignment) checks
When
After the first run
Periodically
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
unintended contact of rotating parts. Follow the coupling installation and operation procedures from
the coupling manufacturer.
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical
injury.
When it is used
Prior to operation when the pump and the driver are at ambient
temperature.
After operation when the pump and the driver are at operating
temperature.
Why
This ensures that alignment can be accomplished.
This ensures that no changes have occurred during the grouting
process.
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.
Why
This ensures correct alignment when both the pump and the driver
are at operating temperature.
This follows the plant operating procedures.
Installation
23