Page 74
BW3000 Operating Manual
To remedy this problem, use lower currents and volt-
ages for the first revolution and build a shelf that can
support subsequent weld beads. Some operators weld
two low amperage rotations directly on top of each
other to create a large shelf. This shelf supports the third
and subsequent rows of much larger beads. Step adjust-
ments are required to provide the desired results.
In any case, step has a marked effect on graping. A step
that is too great or too little reduces the required support
for the molten puddle.
During most BoreWelder buildup operations in the ver-
tical axis, graping should not be experienced within the
current limits of the BW3000. If graping is experienced
during the buildup operation, the weld current may be
too high or the travel speed too slow. Again, it’s possible for graping to occur if the
step is too great or too little. In these cases, the bead will be unsupported and its
surface tension will no longer hold it in place.
5.3.2
Mechanical/electrical troubleshooting
5.3.2.1
Machine does not step
The default setting on power up is step enabled. Step can be turned on and off by
pressing the
FUNCTION
key, then
RETRACT
on the control box.
The STEP switch inside the BoreWelder head unit may not be working properly.
To check it, hold
ROTATION
INITIALIZE
and wait for the spindle to rotate and stop at
the step point. As an alternate means of checking the switch, separate the Bore-
Welder from the control system. Consult the schematic and test the ohms across
the pins relevant for the STEP switch. At the same time, rotate the BoreWelder
spindle by hand until the step switch drops into the step detent. The meter should
read continuity at this point. If not, remove the blue shroud and check the switch
directly. The wiring or switch may be at fault.
Check the control cable for continuity.
Check that the
RETRACT
and
EXTEND
buttons move the quill. If not, see Section
5.3.2.2.
5.3.2.2
Machine cannot be retracted or extended
Do the following if the machine cannot be retracted or extended:
1. Check for a motor failure. If you can hear the motor operate when you
press either the
RETRACT
or
EXTEND
button, skip to step 3.
F
IGURE
5-5. I
LLUSTRATION
OF
GRAPING
Summary of Contents for AUTOBOREWELDER BW3000
Page 1: ...BW3000 BW3000 AUTOBOREWELDER OPERATING MANUAL P N 52815 February 2019 Revision 7 ...
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Page 141: ...P N 52815 Rev 7 Page 125 FIGURE B 2 WIRE FEEDER WITH METAL CONNECTORS SCHEMATIC P N 87414 ...
Page 145: ...P N 52815 Rev 7 Page 129 FIGURE B 6 METAL CONNECTORS SYSTEM LAYOUT P N 70186 1 ...
Page 146: ...Page 130 BW3000 Operating Manual FIGURE B 7 METAL CONNECTORS LADDER SCHEMATIC P N 70186 2 ...
Page 147: ...P N 52815 Rev 7 Page 131 FIGURE B 8 CHART CONTROLLER WITH METAL CONNECTORS P N 70186 3 ...
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