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

Installation

Pump-to-driver alignment

Precautions
WARNING:
• Misalignment can cause decreased performance, equipment damage, and even catas-
trophic failure of frame-mounted units leading to serious injury. Proper alignment is the
responsibility of the installer and the user of the unit. Check the alignment of all drive
components prior to operating the unit.
• Follow the coupling installation and operation procedures from the coupling manufactur-
• Failure to disconnect and lock out driver power may result in serious physical injury or
death. Always disconnect and lock out power to the driver before performing any
installation or maintenance tasks.
• Electrical connections must be made by certified electricians in compliance with all
• Refer to driver/coupling/gear manufacturer's installation and operation manuals (IOM)
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
24 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
er.
international, national, state, and local rules.
for specific instructions and recommendations.
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.
Manual