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MAINTENANCE
AND TROUBLESHOOTING
Page 28
IMPROPER
HANDLING
AND MAINTE-
NANCE
OF COMPRESSED
GAS
CYLINDERS
AND REGULATORS
CAN RESULT
IN SERIOUS
INJURY OR DEATH!
DO NOT ATTEMPT
TO TROUBLESHOOT
THIS
WELDER
unless you have read, understand,
and
intend
to follow all five parts of the SAFETY
IN-
STRUCTIONS
section of this welder.
In the following
TROUBLESHOOTING
table,
a
POSSIBLE
CAUSE,
listed for certain problems,
is
INSUFFICIENT
SHIELDING
GAS
COVERAGE.
This "cause"
itself can be the result of many differ-
ent causes.
Below,
and preceeding
the TROU-
BLESHOOTING
table, is a table listing the causes
and solutions
for insufficient
shielding
gas cover-
age.
All of these causes
have one or more of the
following
symptoms:
a weed that is dirty, porous,
brittle,
and/or non-penetrating.
DISCONNECT
THE
WELDER
FROM
THE
AC
POWER
SOURCE
BEFORE
A'I'rEMPTING
ANY
INSPECTION
OR WORK
ON THE
INSIDE
OF
THE WELDER.
SYMPTOM
BASIC TROUBLESHOOTING
GUIDE
POSSIBLE CAUSE
Gas cylinder
valve turned off
Gas cylinder empty or near
empty
Loose gas supply-line fittings
Gas supply hose leaking
Plugged
welding
nozzle
or gas diffuser
Frozen regulator/flowmeter
Broken or defective
regulator/flowmeter
Wrong polarity
DIRTY, POROUS,
BRITTLE
WELD
REMEDY
Open gas valve
Replace gas cylinder
Tighten fitting
Replace
hose
Clean or replace nozzle or
clean gas diffuser
Thaw regulator/flowmeter
and
change gas from CO2 to a mix
(see selecting
shielding
gas)
Have repaired or replace
Change
polarity
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