Scotchman SHEARMASTER 610, Manual

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8.0 TROUBLE SHOOTING GUIDE
8.1 ELECTRICAL TROUBLE SHOOTING - MOTOR
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CAUTION: ALL ELECTRICAL WORK PERFORMED ON THE 610 SHEAR SHOULD BE PER-
FORMED BY A QUALIFIED ELECTRICIAN.
A. MOTOR WILL NOT RUN:
1. Check the selector switch. The machine will not start unless the selector switch is in the START po-
sition.
2. Check the disconnect switch. Make sure that it is in the ON position.
3. Check the emergency stop buttons. A defective or stuck emergency stop button will not allow the
machine to be powered. To check the emergency stop button, place a jumper wire between the
terminals on the E-Stop. Turn the machine on. If the machine runs, turn the power off, remove the
jumper and repair or replace the emergency stop button.
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DO NOT OPERATE THIS MACHINE WITH THE EMERGENCY STOP BUTTON BY-PASSED!!
4. Check to be sure that the plant voltage and phase correspond to the machine voltage and phase.
5. Check the line wiring connections at the starter. (For the wiring diagram, SEE FIGURE 4 ON PAGE
11.)
6. Check the line voltage at the starter. If the correct line voltage is present at the starter, either the
starter or the motor is defective. Contact your local dealer or the factory.
B. THE MOTOR RUNS BUT THE MACHINE WILL NOT CYCLE WHEN DEPRESSING THE
FOOT PEDAL:
1. Check the selector switch. The machine will not move unless the selector switch is in either the
RUN or the AUTO position.
2. Check the motor rotation. It should be counterclockwise when viewed from the shaft end of the
motor.
3. Check the stroke control adjustment and make sure that only one limit switch is in contact with the
metering boss. If both limit switches are in contact with the metering boss, the machine will not
move. Loosen the stroke control handles and move the limit switches. Try the machine again.
4. Check the fuses in the control box. There are two fuses on the primary side and one on the secondary
side. Remove the fuses and check them with an Ohm meter.
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