Original Saw Company 3579-16L, Руководство по обслуживанию

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TROUBLE POSSIBLE
CAUSE
SUGGESTED REMEDY
Power line not connected to
cable. Correct power wiring. See wiring diagram inside enclo-
sure
Saw motor
Thermal overload relays may
have tripped. VFD must be reset manually.
will neither
start nor
Faulty (brown) line fuse, line
circuit breaker tripped. Check for presence of proper voltage at motor.
hum
Start and stop switches at end
of arm may be defective.
Check circuit with continuity meter. Ensure power is off.
Open circuit in motor cable or
cable lugs. Use a continuity meter and check each wire between
control unit and motor. Check lug connections.
Wiring error.
Check connections in VFD Enclosure and conduit box on
motor, refer to motor and VFD connection diagrams.
Mechanical binding—shaft
should turn freely by hand. Tap end of shaft with mallet to seat bearings in end bells.
Check bearings end bells etc. Replace as needed.
Saw motor
hums but will
not start (Shut
off power
immediately)
Low voltage-voltage should be
measured at the motor while it
is starting and blade attached.
Voltage should not drop lower
than 185 volts for 208, 220
and 230 volt systems. Check for loose or high resistance connections– make
sure lines are of ample capacity and other equipment is
not pulling down the voltage.
Burned out stator If motor smells or has been smoking each phase winding
should be checked with a test lamp or continuity meter.
Motor trips
Wrong or fuse. Replace with proper fuse or circuit breaker.
overload Excessive currents. Check for grounds or shorts.
relay or Low voltage. Check voltage while starting as outlined above.
blows line fuse. Loose or faulty connection. Locate and repair.
ELECTRICAL TROUBLE-SHOOTING GUIDE
CAUTION—HIGH VOLTAGES ARE DANGEROUS—BE SURE POWER IS OFF AND LOCKED
OUT WHEN INSPECTING OR REPAIRING MOTOR OR CONTROLS