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May 14, 2022 View:

The lobe rotor pump does not rotate

What about the lobe lobe pump that doesn't rotate?

Cleaning

Serial number

Cause

Solution

1

Motor not energized

Energized

2

Rotor expansion

Selecting the right rotor based on rotor characteristics

3

Foreign objects are jamming the rotor

Clean up, consider installing breakage cuts and adding filters

4

Shaft bent

Replacement

5

Pump not running for a long time, solids settling in the pump chamber

6

After replacing the rotor, the axial dimension was not adjusted

Re Adjustment

7

High outlet pressure due to unopened outlet valve

Opening the inlet and outlet valves

8

Bearing damaged and stuck

Replacement

9

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Gear seizure (gearbox running without lubricant)

Check and clean or replace

10

Loose impeller pad causes flat key to be out of groove and machine seal moving ring to bite

Adjust impeller pad and flat key fit