Scotchman 6509-24FF - Trouble Shooting Guide; Electrical Trouble Shooting - Motor

Page 65
8.0 TROUBLE SHOOTING GUIDE
8.1 ELECTRICAL TROUBLE SHOOTING - MOTOR

CAUTION: ALL ELECTRICAL WORK PERFORMED ON THE 6509 IRONWORKER SHALL
BE DONE BY A QUALIFIED ELECTRICIAN.
A. MOTOR WILL NOT RUN:
1. Check to be sure that the disconnect switch is in the ON position and that the selector switch is in
the START position.
2. Check to be sure that plant voltage and phase correspond to the machine voltage and phase.
3. Check the line wiring connections at the starter. For the wiring diagram, SEE FIGURE 4 ON
PAGE 15.
4. Check the primary and secondary fuses on the transformer.
5. 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. MOTOR RUNS BUT THE MACHINE WILL NOT CYCLE WHEN DEPRESSING THE FOOT
PEDAL:
1. Check the motor rotation. It should be clockwise when facing the fan end of the motor.
2. Check the selector switch. It must be in either the PUNCH or the SHEAR position or the machine
will not move.
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 in line on the primary side of the
transformer and one on the secondary side. Remove the fuses and check them with an Ohm meter
and replace them, if necessary. Use a Bussman FNQ-R1 600 volt or equivalent for the primary
side. Use a Bussman FNM-2 or equivalent for the secondary side.
5. Check the limit switches. (For procedures, REFER TO SECTION 8.2.)
6. No power from the transformer: Check the voltage across the transformer’s secondary terminals.
It should read 110 to 120 volts.
7. The solenoid on the control valve is not functioning: REFER TO SECTION 8.3.
8. The foot pedal switch is not functioning properly: A voltage test may be run on the terminal strip
in the control box to determine if the foot-switch is working properly.