Troubleshooting
CWS
−
D100
−
B Welding System
2005 Swagelok Company, all rights reserved
September 2005
7-10
Symptom
Remedy
Cause
Displayed average
current value is much
higher or lower than
the expected level
shown in the weld
procedure guideline.
Incorrect weld
parameter(s)
entered on the
rotary switches.
Verify rotary switch
settings match the
guideline and adjust if
necessary.
Refer to the flowchart in
Figure 5-20. Adjust
weld parameters
as necessary
using the weld
procedure guideline.
Rotary switch
settings are not
giving the
expected output.
Use test mode
described in Section 3,
Operation
, to verify
proper switch operation.
Call for service if
switches are faulty.
Voltage fluctuations
during the weld cycle
exceeding 2 V.
Weld head not
seated properly into
the fixture block.
Reattach the weld head
to the fixture block.
Engage the weld head
locking lever.
Work pieces are out
of round.
Replace work
pieces if out of
standard specifications.
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.
Outside diameter
discoloration.
Insufficient shielding
gas flow.
Increases shielding
gas flow rate and
prepurge time.
Impurities in the
gas supply.
Check gas lines for
leaks. Change to a
different gas source
or change oxygen
removal filter.
Wrong type of purge
gas used.
Change to correct type
of purge gas.
Contamination on
work pieces.
Clean the work pieces
before welding.
Contaminants in the
weld head and
purge lines.
Increase prepurge time.
Check the gas source
for low pressure.
Shielding gas line
disconnected from
the power supply.
Reconnect gas line.