Flowserve Pump 10-MFV-18

6.1.7 Maintenance of shaft and shaft sleeve

Examine the shaft condition at the following locations

Is there any rusting or pitting on the shaft?

Are the anti-friction bearings properly fitted to the pump shaft?

Is there any distortion in the shaft keyways?

Is the impeller loose on the shaft?

Is the shaft bent or distorted?

Is the wear on the shaft slight enough for repair by metal spraying or plating?

Measure the shaft runout after repair (maximum 0.051 mm T.I.R.)

Refer to section 1.6, Safety, before dismantling the pump

Ensure genuine Flowserve replacement parts are available

Refer to sectional drawings for part reference numbers

6.7.1 Preliminary to dismantling

Isolate motor and lock off electrical supply in accordance with local regulations

Isolate suction and discharge valves

Remove coupling guards and disconnect the coupling halves

Drain pump casing and remove any auxiliary piping if applicable

Routine inspection (daily/weekly)

Check for abnormal fluid or lubricant leaks

Check oil lubricant level and condition

Determine the mode of lubrication of the pump set

Are the pumps and electric motors pre-greased?

Check the bearing frame cavities for grease and add grease as necessary

Remove the grease fittings or pipe plug closest to the cover after start-up to allow excess grease to flow out

Monitor the bearing temperatures until they return to normal

Investigate any marked increase in bearing temperature after normal operation

Use a good grade of non-asbestos packing with a high temperature surface lubricant for packing the stuffing box.

Ensure flax packing is not used to prevent rapid wear of the shaft sleeve.

Remove the old packing and seal cage halves and clean the stuffing box.

Verify the packing to be used is of the correct type and size.

Measure the stuffing box to determine the proper length of packing.

Cut packing slightly shorter than measured to prevent butting of the ends and buckling.