CWS
−
D100
−
B Welding System
Troubleshooting
2005 Swagelok Company, all rights reserved
September 2005
7-9
Welding Process
Symptom
Cause
Remedy
Arc fails to start.
Blown ceramic
power supply fuse.
Replace the ceramic
power supply fuse with
one of the same type
and rating.
Fuse not seated in
fuse holder properly
or fuse spring is
missing.
Insert fuse properly.
Replace fuse spring
if necessary.
Incorrect arc
gap setting.
Reset the arc gap with
the arc gap gage.
Either
ARC
START
,
DURATION
, or
both settings
are incorrect.
Refer to the weld
procedure guideline
established for the job.
Adjust start and
duration settings
as necessary.
Excessive purge
gas flow.
Reduce flow to
the value shown
on the weld
procedure guideline.
Insufficient shielding
gas flow or
contaminated
shielding gas.
Check the shielding gas
source for low pressure.
Check gas lines for
leaks. Change to a
different gas source or
change oxygen
removal filter.
Electrode in
poor condition.
Replace electrode.
Damaged electrical
connections in the
weld head.
Weld head
needs repair.
Call for service.
Poor contact
between locking
ring tab and
ground extension.
Inspect and clean all
contact surfaces.
Poor contact
between rotor
and brush.
Inspect and clean all
contact surfaces.
Poor contact
between tubing,
collet, and
fixture block.
Inspect and clean all
contact surfaces.
Arc start power set
to zero.
Set Arc Start power
(menu item 23) to one.
See page 3-19
for details.
Note:
All fuses should be rated
at 250 V (ac). 110 V (ac) power
supplies use a 20 A fuse
(1/4 in. x 1 1/4 in.), 220 V units
use a 10 A fuse (5 mm x 20 mm).
Note:
The ceramic fuse is located
on the rear panel of the power
supply. See Figure 7-2.
Figure 7-2 Ceramic Fuse Location
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