PARKSON Hycor ThickTech RDT400, Инструкция по установке, эксплуатации и обслуживанию

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MOTOR TROUBLE SHOOTING GUIDES
PROBLEM CAUSE REMEDY
Motor Overheats
(Check temperature with
instrumentation)
Motor not connected for proper supply
voltage.
Check connection diagram on conduit
box cover and correct the wiring.
Supply voltage varies outside the allowable
tolerance causing an undervoltage or
overvoltage condition.
Assure correct supply voltage.
Insufficient cooling air volume due to:
a. Low frequency operation on variable
frequency drive.
b. Obstructed air flow.
Increase air flow:
a. Continuous running auxiliary
fan.
b. Ensure unobstructed air flow.
Ambient temperature is too high.
Ensure cool air gets to the motor.
Ducting may be required.
Overload at rated voltage. Unit will draw
current in excess of nameplate rating and
run below rated speed.
Select a larger unit.
Motor’s allowable duty cycle is exceeded
(too many starts per hour required).
The problem may or may not be solved
with a larger motor. Contact SEW
Eurodrive.
Single phasing due to break or loose
connection in supply line or blown fuse.
Repair supply lines.
Replace fuses.
Motor does not run.
Blown fuse.
Determine and correct cause of failure
and replace fuse.
Motor protection device activated.
Reset protective device. Identify and
correct cause for device activation.
Motor protection device faulty or will not
reset.
Check protection device for faults.
Motor will not start or
starts sluggishly.
Motor not connected for proper voltage.
Check connection diagram in conduit
box cover and correct the wiring.
Large voltage and/or frequency fluctuation
at starting.
Ensure stable power supply.
For reduced voltage
starting, motor will not
start in Star Connection
but will start in Delta
Connection.
Insufficient torque in Star Connection
Start motor directly in Delta Connection
if possible. Otherwise use a larger
motor.
Faulty contact in Star/Delta starter. Correct fault condition.
Motor hums and draws
high current.
Falulty or defective winding.
Have motor repaired by qualified
service shop. Rotor dragging
Fuses blow or motor over
Ͳ
current protection trips
immediately.
Short circuit in power supply conductors or
in the motor.
Correct the fault condition.
Motor has ground fault or winding to
winding short circuit.
Have motor repaired by qualified
service shop.
Motor improperly connected.
Check connection diagram in conduit
box cover and correct the wiring.
Motor runs in the wrong
direction.
Motor supply leads misconnected. Switch two supply leads.
Note: If after proceeding through the Troubleshooting Chart the motor is found to be defective, contact your
nearest SEW Eurodrive Asssembly Plant for warranty assistance or replacement parts.
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