Goulds Pumps 3700 Installation, Operation And Maintenance Manual page 4

Table of Contents
Couple the pump and driver .................................................................................................. 40
Coupling guard assembly ................................................................................................... 41
Bearing lubrication .............................................................................................................. 50
Shaft sealing with a mechanical seal .................................................................................... 53
Connection of sealing liquid for mechanical seals ................................................................. 53
Pump priming ........................................................................................................................ 54
Prime the pump with the suction supply above the pump ................................................... 54
Prime the pump with the suction supply below the pump ................................................... 54
Other methods of priming the pump ................................................................................... 56
Start the pump ...................................................................................................................... 56
Pump operation precautions ................................................................................................. 57
Shut down the pump ............................................................................................................. 59
Make the final alignment of the pump and driver ................................................................... 60
Dowel the pump casing (optional) ......................................................................................... 60
Maintenance ........................................................................................................................... 62
Maintenance schedule .......................................................................................................... 62
Bearing maintenance ............................................................................................................ 63
Mechanical-seal maintenance .............................................................................................. 63
Disassembly ......................................................................................................................... 64
Disassembly precautions ................................................................................................... 64
Tools required .................................................................................................................... 64
Drain the pump ................................................................................................................... 65
Remove the back pull-out assembly ................................................................................... 65
Remove the coupling hub ................................................................................................... 66
Remove the impeller (3700/3710) ...................................................................................... 66
Remove the impeller (3703) ............................................................................................... 67
Remove the impeller (3700LF) ........................................................................................... 68
Remove the seal-chamber cover ........................................................................................ 68
Remove the optional water-jacket cover ............................................................................. 70
Disassemble the power end ............................................................................................... 70
Preassembly inspections ...................................................................................................... 75
Replacement guidelines ..................................................................................................... 75
Shaft replacement guidelines ............................................................................................. 77
Bearings inspection ............................................................................................................ 78
Wear rings inspection and replacement (Not applicable for 3703/3700LF) ........................ 78
Seal-chamber cover inspection and replacement ............................................................... 84
Bearing-frame inspection ................................................................................................... 86
Bearing fits and tolerances ................................................................................................. 87
Reassembly .......................................................................................................................... 88
Assemble the power end .................................................................................................... 88
Assemble the frame ............................................................................................................ 93
Install the optional water-jacket cover ................................................................................. 98
Install the seal-chamber cover ............................................................................................ 99
Install the cartridge-type mechanical seal and seal-chamber cover ................................. 103
Determining impeller spacer thickness (applicable for 3703/3700LF) .............................. 104
Install the impeller (3700/3710) ........................................................................................ 104
Install the impeller (3703) ................................................................................................. 104
Install the impeller (3700LF) ............................................................................................. 105
Install the coupling hub ..................................................................................................... 105
Install the back pull-out assembly in the casing ................................................................ 106
Post-assembly checks ...................................................................................................... 107
Assembly references ........................................................................................................ 107
Troubleshooting .................................................................................................................. 111
Operation troubleshooting ................................................................................................... 111
Alignment troubleshooting .................................................................................................. 112
2 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual