Lincoln Electric LN-7 GMA WIRE FEEDERS - Manual
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Table of Contents:
- Page 2 – SAFETY; WARNING; CALIFORNIA PROPOSITION 65 WARNINGS; The Above For Diesel Engines
- Page 4 – Refer to
- Page 5 – PRÉCAUTIONS DE SÛRETÉ
- Page 6 – Thank You; Please Examine Carton and Equipment For Damage Immediately
- Page 7 – vi; TABLE OF CONTENTS
- Page 8 – INSTALLATION; TECHNICAL SPECIFICATIONS – LN-7 and LN-7 GMA
- Page 9 – MOUNTING LOCATION
- Page 27 – WORK CABLE; GUN AND CABLE ASSEMBLIES
- Page 29 – SHIELDING GAS HOOKUP
- Page 30 – OPERATION; GENERAL DESCRIPTION
- Page 31 – CONTROLS AND SETTINGS
- Page 32 – CIRCUIT PROTECTION
- Page 35 – GUIDE TUBE DETAIL
- Page 36 – IDLE ROLL PRESSURE SETTING
- Page 37 – WIRE LOADING
- Page 39 – CAUTION
- Page 41 – ACCELERATION SETTING
- Page 42 – MAKING A WELD
- Page 43 – FLUX TANK LOADING
- Page 44 – ACCESSORIES; GENERAL
- Page 45 – K419 BURNBACK TIMER KIT
- Page 46 – WELDING GUNS; INNERSHIELD GUNS; POWER INPUT CABLES; K417 DIGITAL VOLTMETER KIT
- Page 47 – K527 WATER SOLENOID KIT
- Page 48 – MAINTENANCE; ROUTINE MAINTENANCE; DRIVE ROLLS AND GUIDE TUBES; PERIODIC MAINTENANCE; WIRE DRIVE MOTOR AND GEARBOX
- Page 51 – LN-7 SEQUENCE OF OPERATION (Optional Timer Kit not Installed)
- Page 52 – TROUBLESHOOTING & REPAIR
- Page 53 – PROBLEMS
- Page 55 – WIRING DIAGRAM
- Page 56 – NOTES
LN-7 and LN-7 GMA Wire Feeders
(2 and 4 Roll Models)
OPERATOR’S MANUAL
Safety Depends on You
Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However, your
overall safety can be increased by
proper installation ... and thought-
ful operation on your part.
DO
NOT INSTALL, OPERATE OR
R E P A I R T H I S E Q U I P M E N T
W I T H O U T R E A D I N G T H I S
M A N U A L A N D T H E S A F E T Y
P R E C A U T I O N S C O N T A I N E D
T H R O U G H O U T .
A n d , m o s t
importantly, think before you act
and be careful.
IM351-C
June, 2010
VOL
TS
NE
GA
TIVE
ELECTRODE
POLARITY
PO
SITIV
E
THE LINCOLN ELECTRIC CO.
CLEVELAND, OH U.S.A.
D
o n
ot
to
uc
h
liv
e
el
ec
tri
ca
l p
ar
ts
o
r e
le
ct
ro
de
w
ith
sk
in
o
r we
t c
lo
th
in
g
In
su
la
te
y
ou
rs
el
f f
ro
m
w
or
k
an
d g
ro
un
d.
A
lw
ay
s
w
ea
r d
ry
in
su
la
tin
g
gl
ov
es
.
D
o
no
t u
se
A
C
w
el
de
r if
yo
ur
c
lo
th
in
g,
g
lo
ve
s
or
w
or
k
ar
ea
is
da
m
p
or
if
w
or
ki
ng
o
n,
u
nd
er
o
r i
ns
id
e
w
or
kp
la
ce
.
U
se
th
e
fo
llo
w
in
g
eq
ui
pm
en
t:
S
em
ia
ut
om
ati
c DC
c
on
st
an
t v
ol
ta
ge
(w
ire
) w
el
de
r.
D
C
M
an
ua
l (
st
ic
k)
w
el
de
r
A
c w
el
de
r w
ith
re
du
ce
d
vo
lta
ge
co
nt
ro
l.
D
o no
t o
pe
ra
te
w
ith
p
an
el
s
re
mo
ve
d
D
is
con
nec
t i
np
ut
p
ow
er
b
ef
or
e
se
rv
ic
in
g.
ON
LY
Q
UA
LI
FI
ED
P
ER
SO
NA
L
SH
OU
LD
IN
ST
AL
L,
U
SE
O
F S
ER
VI
CE
T
HIS
EQU
IP
M
EN
T.
R
EA
D
AND
F
OL
LO
W
T
HE
M
AN
UF
AC
TU
RE
’S
IN
ST
RU
CT
IO
NS
,
EM
PL
OY
ER
’S
SA
FETY
P
RA
CT
IC
ES
A
ND
M
AT
ER
IAL
S
AFE
TY
D
AT
A
SHE
ETS
(M
SD
S)
F
OR
C
ON
SU
MA
BL
ES
.
VM
M
16
19
6
ELE
CT
RI
C
SH
OC
K
ca
n
ki
ll
W
ARNING
RE
AD
T
HI
S
W
AR
NI
NG
, P
RO
TE
CT
Y
OU
RS
EL
F
&
OT
HE
RS
.
Se
e
Am
er
ica
n
Na
tio
na
l S
ta
nd
ar
d
Z
49
.1
"S
af
et
y
in
W
eld
in
g
an
d
Cut
tin
g"
, p
ub
lis
he
d
by
th
e
Am
er
ica
n
W
el
di
ng
S
oc
ie
ty,
55
0
Le
Je
un
e
Rd
.,
M
iam
i, F
lor
ida
3
31
26
; O
SH
A
Sa
fet
y
an
d
He
ath
S
tan
da
rd
s,
29
C
FR
1
91
0
Av
ail
ab
le
fro
m
U
.S
. G
ov
er
nm
en
t
Pr
in
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g
O
ffic
e,
W
ashi
ng
to
n,
D
.C
. 2
04
02.
D
O
NO
T
RE
M
O
VE
T
HI
S
W
AR
NI
NG
AV
ER
TI
SE
M
EN
T:
L
A
SOUDU
RE
A
L’
AR
C
CO
M
PO
RT
E
DE
S
RI
SQU
ES
DE
BL
ES
SR
ES
P
UR
L’O
PE
RA
TE
UR
O
ULE
S
PE
RS
ONN
ES
DAN
IS
LA
Z
ON
E
DE
TR
AV
AI
L.
C
ONS
UL
TE
R
LA
N
OT
IC
E
TEC
HNIQ
UE
A
VA
NT
U
TI
LI
SA
TI
ON
.
FUM
ES
AN
D
GA
SE
S
ca
n
be
dang
er
ou
s
to
your
he
al
th
Kee
p
you
r h
ea
d
ou
t of
fu
m
es
.
Us
e
en
ou
gh
ve
nt
ila
tion
o
r e
xh
aus
t at
th
e
ar
c,
or
bo
th
,
to
ke
ep
fu
m
es
a
nd ga
se
s f
ro
m
yo
ur
br
ea
th
ing
wo
ne
a
nd
ge
neral
a
re
a.
W
ELD
IN
G
SP
AR
KS
c
an
c
au
se
fire
or
e
xpl
os
io
n.
Do
no
t w
eld
ne
ar
fla
m
m
ab
le m
at
er
ial
.
Do
no
t w
eld
o
n
co
nt
ain
er
s w
hic
h
ha
ve h
eld
flam
m
abl
e
m
at
er
ial
AR
C
RA
YS
ca
n
inj
ure
e
ye
s
and
burn
sk
in.
W
ea
r e
ye
e
ar
a
nd
b
od
y p
ro
te
cti
on
LN
-7 G
MA
CO
NTR
OL
WIRE SPEED
INCHES PER MINUTE
100
200
150
250
700
650
600
550
500
450
400
350
300
SE
RIA
L N
O.
CODE NO.
LN
-7
NE
M
A E
W
3
115
V, 5
0/6
0 H
Z
A
M
PS
Th
is m
achin
e a
nd
the
acc
essorie
s a
re
co
vere
d b
y o
ne o
r m
ore
of t
he
follo
win
g p
ate
nts:
U
nited
sta
tes
3,8
06
,69
5; 3
.97
5,6
16
; 4,2
46,4
63;
4,2
47,7
51
; Au
stra
lia
46
7,4
47;
499
,502
; 51
7,1
20; 52
5,5
41;
Bra
zil 7
9,7
87
; P
I
7,8
03
,42
1; P
I 7,9
05,
509
; C
an
ad
a 9
65,4
87;
1,0
41,1
81
; 1,
093
,15
9; 1
,11
9,6
74
;
Eur
ope
an Pa
ten
t 8
52
7 (Fr
an
ce,
W
est
Ge
rm
any
, U
nite
d K
ingd
om
,
Ne
the
rlan
ds,
Italy
, S
we
de
n); Fr
ance
73.
0147
7; 7
5 34
47
7; 7
8 1
475
7l Ita
ly
1,10
2,5
02
; M
exico
147
,01
9; S
. K
ore
a 1
906
4; S
we
den
780
5112
-5;
Unite
d
Kin
gdo
m 1
,52
9,7
26;
1,5
79,7
00;
W
. G
erm
any
25
50 2
78;
28 2
3 2
93.
Ot
her
pa
tent
s p
en
din
g.
LN-7 GMA shown with optional
K417 digital meter kit and K418
GMA timer kit.
For machines with code numbers: 9100 and above
• Sales and Service through Subsidiaries and Distributors Worldwide •
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
• World's Leader in Welding and Cutting Products •
Copyright © Lincoln Global Inc.
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Summary
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PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suiv- antes: Sûreté Pour Soudage A L’Arc 1. Protegez-vous contre la secousse électriq...
