Derrick Shaker‘s Motor Troubleshooting

derrick shale shaker

Derrick’s shale shakers are designed expressly for removal of drilling solids from drilling fluid.

derrick shale shaker
derrick hp 704

Derrick shaker vibrator motors run with higher surface temperatures than standard industrial motors. But there are still have downtime on tough conditions or improper operation.

 

The troubleshooting procedures presented in the following chart are designed to assist in fault isolation and correction of defects in the Derrick vibrator motor.

TroublePossible CauseCorrective Action
Motor fails to runIncorrect voltageCheck that supply voltage agrees with motor data plate. If correct, check fuses / circuit breakers. Using a voltmeter, check for correct supply power to all three phases at starter(s). Using a voltmeter, verify that motor starter is functioning properly and terminals T-1, T-2, and T-3 are energized. Check for damage to power cable connected to motor junction box. Correct all defects.
Incorrect power supply connectionsCheck electrical connections, and correct any defects.
Starter circuit overloads and tripsIncorrect supply voltageCheck that supply voltage agrees with motor data plate.
Incorrect thermal overloadCheck that thermal overload is capable of handling full load current. Replace overload, if inadequate (see motor data sheet for load data).
Mounting hardware looseCheck that mounting hardware is properly tightened.
Vibrating motion of motor and related components are restricted.Check that shipping brackets have been removed or disengaged as required. Check condition of float mounts. Verify that solids are not preventing motion of the screen frame. Correct all defects.
Excessive current
draw
Incorrect supply voltageVerify that supply voltage agrees with motor data plate.
Incorrect thermal
overload
Check that thermal overload is capable of handling full load current. Replace overload, if inadequate (see motor data sheet for load data).
Mounting hardware
loose
Check security of mounting hardware. Tighten as required.
Vibrating motion of motor and related components restrictedVerify that shipping brackets have been removed / disengaged as required. Verify that float mounts are in good condition. Verify that solids are not preventing motion of the shaker screen frame. Correct all defects.
Surface temperature
too high
Excessive buildup of process material on motor caseWash off buildup from motor case.
Excessive noiseLoose hardwareCheck security of all external and internal hardware. Tighten as required.
Defective bearingReplace both bearings in accordance with
Bearing Replacement.
Motor turns too
slowly
Incorrect supply voltage or line frequencyCheck that supply voltage and line frequency agree with motor data plate. Frequency must be within ±1Hz.
Motors not
synchronized (dual
motors only)
No electric power to
one motor
Check that supply voltage is connected to both motors.
Incorrect electrical
connections
Confirm that electrical connections are in accordance with the instructions in this section.

aipu all types of shale shakers

 

 

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