29
INITIAL PROBLEMS DIAGNOSE
Even the machine comes up with abnormal phenomenon such as welding unable, arc unstable
or bad welding effect, it is still early to judge that there is malfunction on the machine.
The above-mentioned abnormal phenomenon may be caused by some reasons. For example:
tight parts loosen, forgetting to switch on, wrong set up, cable broken and gas rubber pipe
cracked, etc. Therefore, please test and inspect these factors before deliver it back to the factory
because a large number of troubles may be easily solved probably.
For this reason, an initial diagnosis list for general welding troubles is shown below. A trouble
happened may be found in the column of
“Abnormal items” on up-right of the list, please inspect
and maintain for the corresponding items which have
“ " mark in the column according to the
following list respectively.
Initial problems diagnose
Abnormal Items
Area and Item to be Inspected and Maintained
No
a
rc
h
A
rc
S
ta
rti
n
g
No
G
a
s
o
u
t
No
W
ire
F
e
ed
in
g
B
a
d
A
rc
Ig
n
itio
n
U
n
s
ta
b
le
A
rc
Di
rt
o
n
E
d
g
e
o
f We
ld
S
e
a
m
W
ire
S
tick
to
P
a
re
n
t m
a
te
ria
l
W
ire
S
tick
to
C
o
nd
u
c
tiv
e
T
ip
B
lo
w
h
o
le
F
o
rm
e
d
Distribution Boxes
(Input Protection
Devices)
1. Turn on power supply or not?
2. Fuse burnt out
3. Connection joint loose
Input Cable
1. Examine whether the cable is cut
off.
2. Connection joint loose
3. Over heat
Welding Power
Operation
1. Turn on power supply or not?
2. Phase Lacking
