Troubleshooting Guide

2
PROBLEM POSSIBLE CAUSE ACTION
Bending shoe does
not move when
switch is in bend or
return position.
No power to bender Check power cord. Use 110 VAC, 15 amp outlet.
12V DC power supply failed Unplug bender power cord. On P.C. board, remove
cover on plug. Connect positive meter lead on black
wire and negative lead on green wire. Plug in the power
cord. Meter should indicate 12V DC. If not, replace P.C.
board.
Power circuit on P.C. board is mal-
functioning
Control circuit is not activating bender. Replace P.C.
board, refer to Repair Parts Lists.
Motor overload or/overheated Allow time for motor to cool. Activate bender. If motor
will not run, perform continuity check.
Replace damaged motor.
Bend switch does
not function, return
switch functions.
Remote pendant bend switch or
wiring inoperative
Unplug bender power cord, test for continuity at hard-
ness to pendant. Attach leads to black and white wires.
Press bend switch. If no continuity, check switch under
pendant cover. Place ohm meter on leads for black wire
and white wire. Depress bend switch. If no continuity,
replace switch, Part Number - DA9687372.
If continuity exists, wire harness is faulty.
Bend limit switch or harness to
limit switch is malfunctioning
Unplug bender power cord. Perform continuity check on
green and orange wires. Press bend limit switch actu-
ator tab, if no continuity, replace switch, Part Number
- DA9687372. If continuity exists, check wiring harness.
(Refer to Repair Parts List for illustration and additional
part numbers).
Printed circuit board malfunctioning Replace P.C. board, Part Number- EC2006 or HC12.
Bend function works,
return switch does
not.
Remote pendant switch or wiring is
malfunctioning.
Unplug bender power cord. Perform continuity check
on pendant return switch. Attach leads to black wire
and white wire, depress return switch. If no continuity,
replace switch, Part Number - DA9687372. If continui-
ty exists, check wire harness. Attach ohm meter leads
to orange and blue wires. Depress return switch if no
continuity; replace wire harness, Part Number – CL-
712647SR.
Bender shoe will not
return when pressing
return and jog but-
ton. (Old Pendant)
Jog button malfunctioning or wire
harness to pendant damaged.
Unplug bender power cord. Perform continuity check
on wire harness. Attach leads to red and green wires.
Depress override (jog) button. If no continuity, check jog
switch in pendant control, (Parts Not Available). Remove
cover, place leads on red and green wires at switch.
Depress jog switch. If no continuity, replace switch,
(Parts Not Available). If continuity exists, fault lies in wire
harness. (Refer to Repair Parts List for illustration and
additional part numbers).
Bender shoe returns
to zero, indicator
light does not light.
Zero limit switch or harness to switch
is malfunctioning.
Unplug bender power cord. Perform continuity check on
harness from pendant control. Attach leads to black and
red wires. If no continuity, check the zero limit switch
(see illustration in Repair Parts List). Attach the leads
to black and red wires at the limit switch. Depress limit
switch actuator tab. If no continuity, replace switch, Part
Number- DA9687372. If continuity exists, replace wire
harness.
Bender consistently
develops over bends.
All mechanical
adjustments are
accomplished
Braking resistor on P.C. board is not
malfunctioning.
Unplug bender power cord. Perform resistance mea-
surement on breaking resistor. Remove chassis from
rear of bender. Attach ohm meter across to brown and
gray wires. If meter reads 9-11 ohms + 1 ohm, resistor is
good. If meter reads above 11 ohms, replace resistor.
P.C. board circuit is not functioning. Remove and replace P.C. Board, Part Number
DA7034380.
1.0 TROUBLESHOTTING GUIDE