Check the rotation...........................................................................................................................................................28
Thrust bearing lubrication.............................................................................................................................................29
Flush the steady bearings............................................................................................................................................29
Sealed bearings.............................................................................................................................................................29
Lubricate the sealed bearings with grease cups.......................................................................................................30
Shaft sealing with a mechanical seal.............................................................................................................................30
Shaft sealing with a stuffing box...................................................................................................................................31
Steam jacket pumps (molten sulfur construction).....................................................................................................31
Impeller-clearance setting..............................................................................................................................................31
Pump priming..................................................................................................................................................................32
Install the coupling guard...............................................................................................................................................32
Start the pump.................................................................................................................................................................33
Pump operation precautions.........................................................................................................................................33
Shut down the pump......................................................................................................................................................34
Make the final alignment of the pump and driver......................................................................................................34
Maintenance......................................................................................................................................................................35
Maintenance schedule.....................................................................................................................................................35
Bearing maintenance.......................................................................................................................................................35
Thrust bearings............................................................................................................................................................36
Lubricate the bearings after a shutdown period......................................................................................................36
Lubricating-grease requirements...............................................................................................................................36
Steady bearings.............................................................................................................................................................37
Shaft-seal maintenance...................................................................................................................................................37
Mechanical-seal maintenance.....................................................................................................................................37
Packed stuffing-box maintenance..............................................................................................................................38
Disassembly......................................................................................................................................................................38
Disassembly precautions.............................................................................................................................................38
Tools required...............................................................................................................................................................39
Drain the pump............................................................................................................................................................39
Remove the pump from the sump............................................................................................................................39
Remove the impeller....................................................................................................................................................41
Disassemble the column.............................................................................................................................................42
Preassembly inspections.................................................................................................................................................43
Replacement guidelines...............................................................................................................................................43
Shaft replacement guidelines......................................................................................................................................43
Bearings inspection......................................................................................................................................................44
Bearing fits and tolerances..........................................................................................................................................44
Reassembly.......................................................................................................................................................................45
Assemble the column and support plate..................................................................................................................45
Assemble the rotating element...................................................................................................................................46
Assemble the column..................................................................................................................................................46
Assemble the impeller, suction cover, and strainer.................................................................................................47
Troubleshooting...............................................................................................................................................................48
Operation troubleshooting............................................................................................................................................48
Assembly troubleshooting.............................................................................................................................................49
Parts Listings and Cross-Sectional Drawings.........................................................................................................50
Dimensional drawings....................................................................................................................................................50
Parts list.............................................................................................................................................................................51
Cross-sectional diagrams................................................................................................................................................54
Local ITT Contacts.........................................................................................................................................................56
Regional offices................................................................................................................................................................56
Table of Contents
2 Model 3171 Installation, Operation, and Maintenance Manual
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