Greenlee Textron - Greenlee 855 Instruction Manual

Troubleshooting (cont'd)
WON'T UNLOAD – DISPLAY ON
Is the retention cam
YES
engaged with the roller
support?
NO
Does the bender unload
when the "LOCKOUT"
plug is removed from the
I/O board?
YES
Is the retention cam
pointed to around the
7 o'clock position so that
the ramp of the cam is
not engaging the limit
switch arm?
YES
Remount the limit switch
farther to the right, or
bend the switch arm so
that the dwell portion of
the cam won't actuate it.
Greenlee Textron / Subsidiary of Textron Inc.
855 Smart Bender™
Lower the roller support
assembly.
NO
See Won't Bend - Display
On Section.
Loosen cam mounting
NO
bolt and retighten while
holding the outside
washer so that the cam
is oriented to 7 o'clock.
TRIPS CIRCUIT BREAKER
Are the proper support rollers
and shoe groove being used for
the type and size of conduit
being bent?
YES
Is the current on the 115 VAC
line exceeding 20 amps?
YES
Is the DC current to the motor
exceeding 17 amps?
NO
When BEND is pressed, is the
voltage sent to the motor 20 to 50
volts over the AC line voltage?
YES
Are connectors corroded?
NO
Replace PGU.
WON'T STOP
Is the supply line voltage low?
NO
Does bender stop when the pen-
dant is unplugged?
NO
Replace PGU.
BENDER ONLY RUNS IN ONE DIRECTION
On 1-1/2" or 2" size setting, is
the DIR LED on the I/O Board on
when BEND is pressed?
YES
When DIR LED is on, is 12 VDC
measured at large relay coil
(where relay wire unit connects)?
YES
Replace 918 6645.6 relay.
61 4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
NO
Follow directions in
instruction manual.
NO
Replace circuit
breaker.
YES
Replace motor.
NO
Replace bridge
rectifier.
YES
Clean.
YES
Use 120 VAC.
Replace pendant
YES
membrane switch.
NO
Replace I/O board.
NO
Replace PGU.