Goulds Pumps 3296 EZMAG - IOM - Manual (Page 75)

Troubleshooting
Symptom Cause Remedy
The condition monitoring device shuts The sleeve and thrust bearings are dam- Replace as required.
down the pump. aged.
There is a plugged recirculation circuit.
Disassemble and remove the blockage.
Then determine and correct the cause of
the blockage.
There is recirculation liquid vaporization. Correct all of these as necessary:
• Check the actual liquid temperature
versus the design temperature.
• Check the actual NPSH available
versus the design.
• Check the minimum flow require-
ment for the pump size.
The containment shell is damaged. Replace as required.
The magnets are de-coupling. Check the temperature and viscosity of
the pumped fluid. Check the magnets with
a breakaway torque test.
The pump is running dry.
• Check the control device for proper
operation.
• Check the suction line for blockage.
• Reprime the pump.
There is excessive motor power. The system head is lower than the rating
and pumps too much liquid.
Check the rotating parts for binding and
wear. The liquid is heavier than expected.
Alignment troubleshooting
Symptom Cause Remedy
Horizontal (side-to-side) alignment cannot The driver feet are bolt-bound. Loosen the pump's hold-down bolts, and
be obtained (angular or parallel). slide the pump and driver until you
achieve horizontal alignment.
The baseplate is not leveled properly and 1. Determine which corners of the base-
is probably twisted.
plate are high or low.
2. Remove or add shims at the appropri-
ate corners.
3. Realign the pump and driver.
Vertical (top-to-bottom) alignment cannot The baseplate is not leveled properly and 1. Determine if the center of the base-
be obtained (angular or parallel). is probably bowed.
plate should be raised or lowered.
2. Level screws equally at the center of
the baseplate.
3. Realign the pump and driver.
Model 3296 EZMAG Installation, Operation, and Maintenance Manual 73