Flowserve Pump 6-MFC-18

Ensure the correct materials are used

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

Verify the packing type and size

Measure the stuffing box for proper packing length

Cut packing slightly shorter than measured length

Insert each ring of packing separately and seat firmly

Stagger the rings at 90° to 180° angles apart

Periodic inspection (semi-annual)

Ensure the maximum time between cleaning and lubrication change is one year.

Determine if environmental severity dictates a shorter frequency.

Complete cleaning during a major overhaul

Use a brush and wash out the housing with hot oil or non-toxic solvent.

Flush the housing with light mineral oil to prevent rust.

Remove solid particles with a brush dipped in hot oil while spinning the bearing.

Is there badly oxidized grease present?

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 sleeve worn appreciably?

Measure the depth of grooves on the sleeve (in mm)

Determine the mode of lubrication of the pump set

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

5.2.4.2 Recommended grease fill quantities

Verify grease fill quantities for Frame 8H

Connect grease gun to the nipple

Press grease into the bearing housing until it appears in the gap between the housing and shaft, then stop greasing

Record the operating temperature of the bearing

Is the temperature rise above ambient within 55 °C (131 °F) or a combined maximum of 95 °C (204 °F)?

Is there a continuously rising temperature or an abrupt temperature rise?

If temperature issues are observed, describe the actions taken to investigate the cause