Goulds Pumps 3700 - IOM - Manual (Page 4)

Table of Contents
Couple the pump and driver .................................................................................................. 37
Coupling guard assembly ................................................................................................... 37
Bearing lubrication .............................................................................................................. 46
Shaft sealing with a mechanical seal .................................................................................... 49
Connection of sealing liquid for mechanical seals ................................................................. 49
Pump priming ........................................................................................................................ 49
Prime the pump with the suction supply above the pump ................................................... 49
Prime the pump with the suction supply below the pump ................................................... 50
Other methods of priming the pump ................................................................................... 52
Start the pump ...................................................................................................................... 52
Pump operation precautions ................................................................................................. 53
Shut down the pump ............................................................................................................. 54
Make the final alignment of the pump and driver ................................................................... 54
Dowel the pump casing (optional) ......................................................................................... 54
Maintenance ........................................................................................................................... 56
Maintenance schedule .......................................................................................................... 56
Bearing maintenance ............................................................................................................ 57
Mechanical-seal maintenance .............................................................................................. 57
Disassembly ......................................................................................................................... 58
Disassembly precautions ................................................................................................... 58
Tools required .................................................................................................................... 58
Drain the pump ................................................................................................................... 59
Remove the back pull-out assembly ................................................................................... 59
Remove the coupling hub ................................................................................................... 60
Remove the impeller (3700/3710) ...................................................................................... 60
Remove the impeller (3703) ............................................................................................... 61
Remove the impeller (3700LF) ........................................................................................... 62
Remove the seal-chamber cover ........................................................................................ 62
Remove the optional water-jacket cover ............................................................................. 64
Disassemble the power end ............................................................................................... 64
Preassembly inspections ...................................................................................................... 69
Replacement guidelines ..................................................................................................... 69
Shaft replacement guidelines ............................................................................................. 71
Bearings inspection ............................................................................................................ 71
Wear rings inspection and replacement (Not applicable for 3703/3700LF) ........................ 72
Seal-chamber cover inspection and replacement ............................................................... 78
Bearing-frame inspection ................................................................................................... 80
Bearing fits and tolerances ................................................................................................. 80
Reassembly .......................................................................................................................... 81
Assemble the power end .................................................................................................... 81
Assemble the frame ............................................................................................................ 85
Install the optional water-jacket cover ................................................................................. 90
Install the seal-chamber cover ............................................................................................ 91
Install the cartridge-type mechanical seal and seal-chamber cover ................................... 95
Determining impeller spacer thickness (applicable for 3703/3700LF) ................................ 96
Install the impeller (3700/3710) .......................................................................................... 96
Install the impeller (3703) ................................................................................................... 96
Install the impeller (3700LF) ............................................................................................... 97
Install the coupling hub ....................................................................................................... 97
Install the back pull-out assembly in the casing .................................................................. 98
Post-assembly checks ........................................................................................................ 99
Assembly references .......................................................................................................... 99
Troubleshooting .................................................................................................................. 102
Operation troubleshooting ................................................................................................... 102
Alignment troubleshooting .................................................................................................. 103
2 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual