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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 “
〇
" mark in the column according to the following list respectively.
Initial problems diagnose
Abnormal Items
Area and Item to be inspected
and maintained
N
o a
rc
h
A
rc
S
ta
rtin
g
N
o G
as
o
ut
N
o W
ire
F
ee
din
g
B
ad
A
rc
Ig
nit
io
n
U
ns
ta
ble
A
rc
D
irt
on
E
dg
e
o
f W
eld
S
ea
m
W
ire
S
tic
k t
o P
ar
en
t m
ate
ria
l
W
ire
S
tic
k t
o C
on
du
cti
ve
T
ip
B
lo
w
ho
le
F
or
m
ed
Distribution
Boxes (Input
Protection
Devices)
1. Turn on power supply or not?
2. Fuse burnt out
3. Connection joint loose
〇
〇
〇
〇
〇
〇
Input Cable
1. Examine whether the cable is cut off.
2. Connection joint loose
3. Over heat
〇
〇
〇
〇
Welding Power
Operation
1. Turn on power supply or not?
2. Phase Lacking
〇
〇
〇
〇
〇
〇
〇
〇
Gas Cylinder and
Gas Regulator
1. Turn on gas supply
2. Residual Amount of Gas in the Cylinder
3. Set value for flow
4. Connection joint loose
〇
〇
Gas supply hose
(the whole line
from the high
pressure cylinder
to the weld gun)
1. Connection joint loose
2. Gas hose damaged
〇
USER MANUAL
21
YF-20Y A1
Содержание MIG/NBC 300GN
Страница 1: ...USER MANUAL MIG NBC 300GN...
Страница 2: ......
Страница 16: ...STRUCTURE CHART AND MAJOR PART LIST Structure Chart of MIG NBC 300GN USER MANUAL 14 YF 20Y A1...