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Troubleshooting

9 Upgrade the material selection
9 Change to a mechanical seal
Shaft deflection
9 Check for low flow. (See Figure 11.3)
9 Increase the shaft strength. (See 11.4.2.2)

Shaft run-out too high
9 Install a new shaft
Worn stuffing box
9 Install a new stuffing box
Mis-aligned lantern ring

9 Repack the pump properly
9 Replace stuffing box if necessary
9 Skills training needed
Too many rings of packing

9 Repack the pump properly
9 Skills training needed.
Wrong size of packing
9 Repack the pump properly.
9 Sldlls training needed.

Rings incorrectly cut
9 Repack the pump properly
9 Skills training needed.
Poor start-up procedures
9 Knowledge training needed
Badly installed packing

9 Repack the pump properly
9 Skills training needed

11.5.7 Mechanical seal - general

Temperature problem
9 Improve environmental controls

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