Do not reconnect the non-flexible coupling until after you complete the alignment operation. The
baseplate does not need to be level.
7.
After the foundation bolts are lightly torqued, recheck the alignment requirements.
If the alignment must be corrected, then add or remove shims or wedges under the baseplate.
4.3 Pump-to-driver alignment
Precautions
WARNING:
•
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 installa-
tion or maintenance tasks.
•
Electrical connections must be made by certified electricians in compliance with all
international, national, state, and local rules.
•
Refer to driver/coupling/gear manufacturer's installation and operation manuals
(IOM) for specific instructions and recommendations.
4.3.1 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 misalignment
Type of misalignment
Description
Angular misalignment
Shafts have an axis concentric at the intersection but not parallel.
Parallel offset misalignment
Shafts have an axis parallel but offset.
Check and correct angular misalignment before correcting parallel misalignment.
Permissible coupling misalignment
Type of misalignment
Single element coupling
Double element (spacer) coupling
Parallel misalignment
0.1 mm | 0.004 in. TIR (4 mils)
1.52 mm | 0.060 in. TIR per foot of spacer
length
Angular misalignment
0.1 mm | 0.004 in. TIR per inch of radius.
0.51 mm | 0.002 in. TIR per inch of radius
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.
To make the final alignment, move and shim the motor on its base until the coupling hubs are within the
recommended tolerances measured in total runout. Take all measurements with the pump and driver
bolts tightened. Make the final alignment check after the unit has attained its final operating temperature.
4.3 Pump-to-driver alignment
28
Model 3410 Installation, Operation, and Maintenance Manual
Содержание GOULDS PUMPS 3410
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