DERRICK EX, Maintenance & Operation Manual

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EX, SGX VIBRATOR MOTORS
01 May 09 27
TROUBLESHOOTING
The troubleshooting procedures presented in the following chart are designed to assist in fault
isolation and correction of defects in Derrick EX and SGX vibrator motors.
Trouble Possible Cause Corrective Action
Incorrect voltage
Check 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.
Motor fails to run
Incorrect power supply
connections Check electrical connections, and correct any
defects.
Incorrect supply
voltage Check 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 that mounting hardware is properly
tightened.
Starter circuit
overloads and trips
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.
Incorrect supply
voltage Verify 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.
Excessive current
draw
Vibrating motion of
motor and related
components restricted
Verify 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 screen
frame. Correct all defects.
Surface temperature
too high*
Excessive buildup of
process material on
motor case Wash off buildup from motor case.