IM875
MK 091-0564
September 2005
Rev A.
OPERATOR'S MANUAL
GMAW
Push-Pull Gun
OPERATOR’S MANUAL
Model number K2447-1, K2447-2, K2447-3
C
opyrig
h
t © 2005 Linco
l
n G
l
o
b
a
l
Inc.
World's Leader in Welding and Cutting Products
Sales and Service through Subsidiaries and Distibutors Worldwide
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
Safety Depends on You
Lincoln arc welding equipment
is designed and built with safety
in mind. However, your over-
all safety can be increased by
proper installation...and thoughtful
operation on your part. DO NOT
INSTALL, OPERATE OR REPAIR
THIS EQUIPMENT WITHOUT
READING THIS MANUAL AND
THE SAFETY PRECAUTIONS
CONTAINED THROUGHOUT.
And, most importantly, think before
you act and be careful.
Python
-Plus
®
n
n
P
yt
h
on is a registere
d
tra
d
emar
k
o
f
MK Pro
d
ucts
This manual covers equipment which is no
longer in production by The Lincoln Electric Co.
Specications and availability of optional
features may have changed.
Py
tho
n
-Plus Owner's Manual Pa
g
e i
Py
tho
n
-
Plus Owner's Manual Pa
g
e i
i
P
y
thon-Plus Owner's Manual Pa
g
e iii
7HEN THIS EQUIPMENT IS SHIPPED TITLE PASSES TO THE PURCHASER UPON RECEIPT BY THE
CARRIER #ONSEQUENTLY CLAIMS FOR MATERIAL DAMAGED IN SHIPMENT MUST BE MADE BY THE
PURCHASER AGAINST THE TRANSPORTATION COMPANY AT THE TIME THE SHIPMENT IS RECEIVED
0LEASE RECORD YOUR EQUIPMENT IDENTIFICATION INFORMATION BELOW FOR FUTURE REFERENCE 4HIS
INFORMATION CAN BE FOUND ON YOUR MACHINE NAMEPLATE
-ODEL .AME .UMBER ?????????????????????
#ODE 3ERIAL .UMBER ?????????????????????
$ATE OF 0URCHASE ?????????????????????
7HENEVER YOU REQUEST REPLACEMENTS
PARTS FOR OR INFORMATION ON THIS EQUIPMENT ALWAYS
SUPPLY THE INFORMATION YOU HAVE RECORDED ABOVE
0LEASE %XAMINE #ARTON AND %QUIPMENT &OR $AMAGE )MMEDIATELY
2EAD THIS /WNERS -ANUAL COMPLETELY BEFORE ATTEMPTING TO USE THIS EQUIPMENT 3AVE THIS MANUAL
AND KEEP IT HANDY FOR QUICK REFERENCE 0AY PARTICULAR ATTENTION TO THE SAFETY INSTRUCTIONS WE
HAVE PROVIDED FOR YOUR PROTECTION
Table of
C
ontents
S
afet
y
Considerations ..............................................................
.
.
.......
.
i
-
iii
I
nsta
ll
at
i
on
...............................................................
................
S
ection
A
T
echnical S
p
ecifi cations
...............................................................
......................
1
Su
pp
ort E
q
ui
p
ment Re
q
uired
...............................................................
..............
1
G
un Lead Connections
...............................................................
.......................
1
O
peration
...............................................................
..................
S
ection B
G
eneral
.
.............................................................
.
.
.............................................
.
2
C
ontrols and Settings
.
.............................................................
.
.
........................
.
2
T
rigger Adjustment ..............................................................
.
.............................
.
2
D
riv
e
R
o
ll
a
n
d
I
d
l
e
r R
o
ll
s
.
.............................................................
.
.
..................
.
2
Accesso
r
ies
...............................................................
..............
S
ection
C
O
ptional Kits
.
.............................................................
.
.
......................................
.
4
Snake Skins
.
.............................................................
.
.
......................................
.
4
C
ontact Tips
.
.............................................................
.
.
......................................
.
5
G
as
C
ups ..............................................................
.
...........................................
.
5
Ba
rr
els
.
.............................................................
.
.
...............................................
.
6
Ma
int
e
n
a
n
ce
...............................................................
.............
S
ection D
Pe
r
iodic
Mai
nt
e
n
a
n
ce
...............................................................
.........................
6
Recommended
S
pare Parts List
...............................................................
.........
7
T
roubleshooting
...............................................................
........
S
ection E
T
roubleshootin
g
G
uide
...............................................................
........................
9
T
estin
g
The
G
un
...............................................................
..................................
0
App
endices..............................................................
.
.
.............
.
S
ection F
D
ia
g
rams
/
Parts List
...............................................................
.........................
11
M
ec
h
an
i
ca
l
...............................................................
........................................
12
El
ectr
i
ca
l
...............................................................
............................................
16
M
K Re
p
air Stations
S
afet
y
Warnin
g
s
W
arrant
y
THIS PAGE INTENTIONALLY BLANK
Py
thon-
P
lus
O
wner's Manual -
P
a
g
e
1
S
ection A
I
nsta
ll
at
i
o
n
Technical
Sp
eci
fi
cation
s
Wire
C
apacit
y
.030" - .045"
(
0.6mm - 1.2mm
)
solid and hard wire
.030" - 1
/
16"
(
0.8mm - 1.6mm
)
aluminum and cored wire
Wire
S
pee
d
8
00 IPM
(
20.3 mpm
)
Max. at rated feeder Input Volta
g
e
(
120VAC / 42VAC
)
Duty Cycle - 100% (All ratings are using Argon Gas)
2
00 Amps
/
25 Volt
s
A
ir cooled standard
S
hippin
g
Wei
g
ht
(
approximate
)
- Air Cooled
15
f
t.
(
4.5m
)
.......................................
13
.
09
lbs.
(
5.94 Kg
)
25
f
t.
(
7.6m
)
.......................................
19
.
29
lbs.
(
8.29 K
g)
5
0ft.
(
15.2m
)
.....................................
2
9
.
9
lbs.
(
13.19 K
g)
T
orc
h
we
i
g
ht
(
less leads
)
A
ir
/
Water cooled - 2.5 lbs.
(
1.13 kilo
g
ram
)
S
u
pp
ort E
q
ui
p
ment Re
q
uire
d
•
C
.V. or C.C. Power Source of suffi cient capacit
y
for
y
our needs.
•
R
egu
l
ate
d
gas supp
l
y an
d
h
oses.
•
P
roperly sized power leads
f
rom power source to wire
f
eeder and
g
round.
Gu
n L
ead
Co
nn
ect
i
o
n
s
P
o
w
e
r C
ab
l
e
A
#
2 AW
G
power cable is used on the Python-
Pl
us. The gun end o
f
the
cable has a
fi
ttin
g
crimped to the copper cable strands. This
fi
ttin
g
is
t
hen threaded into the
g
un bod
y
. The cabinet end of the power cable is
incor
p
orated into the Power
/G
as Ada
p
tor.
Co
n
du
i
t
Th
e
Py
t
h
on-
Plus
comes standard with a poly-lined conduit, for feeding
s
aluminum wire. The longer
fi
tting with a shallow groove is used on the gun
end. A set screw located on top o
f
the
g
un handle secures the conduit in
p
lace. The cabinet end of the conduit is incor
p
orated into the Power/Gas
Ad
a
p
tor.
Gas
H
ose
T
he
g
as hose is pushed over a barbed fi ttin
g
on the
g
un bod
y
and secured
with a plastic tie wrap. The cabinet end o
f
the gas hose is incorporated into
t
he Power
/G
as Adaptor.
El
ect
ri
c
C
ab
l
e
A
mu
l
t
i
-con
d
uctor contro
l
ca
bl
e
i
s use
d
on t
h
e
P
yt
h
on-
Pl
us. The gun end o
f
t
he cable is secured with a cable clamp and the wires are connected to the
potent
i
ometer, t
h
e m
i
cro sw
i
tc
h
, t
h
e motor an
d
t
h
e
g
un
b
o
dy
mec
h
an
i
ca
lly
.
S
lack is le
f
t in the electric cable as it exits the back o
f
the gun to prevent
cable and
/
or wire breaka
g
e. The cabinet end o
f
the control cable uses a
7-
Pi
n,
A
m
ph
eno
l
connector
.
Py
thon-
P
lus
O
wner's Manual -
P
a
g
e
2
S
ection B
Op
eratio
n
G
eneral
T
he P
y
thon
g
un maintains a constant, stead
y
, uni
f
orm wire
f
eed speed,
re
g
ardless of curved or looped wire conduit. The constant push exerted b
y
t
he slave motor in the cabinet, combined with the pull o
f
the torch motor,
causes the wire to literall
y
fl
oat
f
riction-
f
ree throu
g
h the wire conduit. The
24VDC torch motor is controlled b
y
a three and three-quarter
(
3 3/4
)
turn
potent
i
ometer
i
n t
h
e torc
h
h
an
dl
e.
C
ontrols and Settin
gs
Potentiomete
r
T
he laterall
y
-positioned potentiometer is located in the lower end of the
handle, providing up to 800 ipm with 3 3/4 turns.
M
icro
S
witc
h
T
he micro switch assembl
y
consists of the micro switch, and leads.
Trigger Sensitivity
T
he amount o
f
trigger level travel can
be shortened
f
or a "
q
uicker" or "more
res
p
ons
i
ve
"
act
i
on.
A
more sensitive trigger lever is produced
b
y
reducin
g
the
g
ap between the
t
r
i
gger
l
ever an
d
t
h
e m
i
cro-sw
i
tc
h
l
ever.
By turning-in the Trigger
S
ensitivity
A
d
j
ustment
S
crew, it closed the
g
ap
b
etween t
h
e tr
i
gger
l
ever an
d
t
h
e m
i
cro-
sw
i
tc
h
l
ever.
T
his well enable the o
p
erator to increase
t
he sensitivity of the trigger lever.
S
ensitivit
y
Ad
j
ustmen
t
With the wire feeder turned on (with or
without welding wire loaded
)
, turn the
sc
r
e
w in
u
ntil th
e
mi
c
r
o
-
s
wit
c
h i
s
ac
tiv
a
t
ed
.
Once activated, the gun and wire feeder
motors will begin
f
eeding wire. Retract
t
he screw accordin
g
l
y
until the s
y
stem is
d
eact
i
vate
d
an
d
a
dj
uste
d
to t
h
e operators
'
liki
ng.
D
r
i
ve
R
o
ll
an
d
Idl
er
R
o
lls
Ge
n
e
r
al
Th
e
Py
t
h
on
g
un comes stan
d
ar
d
w
i
t
h
a
k
nur
l
e
d
d
r
i
ve ro
ll
an
d
a
g
roove
d
idl
er
roll
,
which will handle both steel and aluminum wire with diameters
f
rom
.030-1
/
16 inch.
O
ptional insulated V-
g
roove drive rolls are also available
f
or
aluminum wire if desired
(
see Optional Kits
)
.
D
r
i
ve ro
ll
tens
i
on
i
s accomp
li
s
h
e
d
w
i
t
h
a un
i
que spr
i
ng-
l
oa
d
e
d
pressure
screw. The P
y
thon comes
f
rom the
f
actor
y
with the pressure ad
j
ustment
screw
p
reset.
N
O ADJUSTMENT IS RE
Q
UIRED FOR ALL SIZES
AND TYPE
S
O
F WIRE
S
.
Py
thon-
P
lus
O
wner's Manual -
P
a
g
e
3
Driv
e
R
o
ll In
sta
ll
at
i
o
n/R
e
m
o
v
al
N
O
TE: N
e
i
t
h
e
r
of
t
h
e
h
a
n
d
l
es
n
eeds
to
be
r
e
m
o
v
ed
to
access
t
h
e
Driv
e
o
r I
d
l
e
r R
o
ll
s
.
1
.
P
ull the
C
am Lever away
f
rom
t
h
e
i
d
l
e
r r
o
ll. Thi
s
will r
e
li
e
v
e
th
e
pressure against the drive roll (as
shown in Figure 1
)
.
2.
Ali
gn t
h
e
D
r
i
ve
R
o
ll
R
emova
l
T
oo
l
(
P
/
N 931-0100
)
over the
fl
ats o
f
the
d
rive roll
(
as shown in Fi
g
ure 2
)
.
Hold
t
he
t
o
r
ch
w
i
t
h
o
n
e
ha
n
d
o
r
o
n
a table top, with the other hand give
t
he Removal Tool a quick snap-turn
i
n t
he
CLOCKWISE DIRECTIO
N
.
3. Once the drive roll is loose, continue to s
p
in drive roll in the clockwise
d
irection to remove the drive roll
f
rom the torch.
4
. In
s
t
a
ll
a
n
e
w
d
riv
e
r
o
ll
o
n th
e
l
ef
t-h
a
n
d
thr
eaded
s
h
af
t. Th
e
d
riv
e
r
o
ll will
self-tighten when it is feeding wire.
Id
l
e
r R
o
ll In
sta
ll
at
i
o
n
a
n
d
R
e
m
o
v
al
(
Re
f
erence Fi
g
ure 3
)
1
.
U
s
i
ng a s
l
ot type screw
d
r
i
ver,
l
oosen
idl
er screw, ta
ki
ng care not to
l
ose
l
oc
k w
as
h
e
r
u
n
de
r i
d
l
e
r r
o
ll.
2.
I
nsert new
idl
er ro
ll
an
d
l
oc
k
was
h
er onto screw,
i
nsur
i
ng t
h
at
idl
er groove
i
s towar
d
top an
d
l
oc
k
was
h
er
i
s
b
eneat
h
.
3
.
T
ighten.
N
OTE: Lock washer must be under idler roll or it will not turn freel
y
.
C
am Lever
Figure
2
F
igure
1
F
igure
3
Py
thon-
P
lus
O
wner's Manual -
P
a
g
e 4
S
ection
C
Accessories/
Op
tions
L
E P
/
N
M
K P
/N
In
su
l
a
t
ed
Driv
e
R
o
ll Kit
s
are used to prevent preheatin
g
of the wire which
may soften it and clog the liner. This picking up of current at the drive rolls
rather than at the contact tip is usually not a problem unless using too large
o
f a contact tip or excessivel
y
oxidized aluminum wire.
I
nsulated Groove Drive Roll Ki
t
..........................
K
P1594-030
......
005-0640
Fo
r
.
030
"
(
0.8mm
)
dia. aluminum wire. Includes insulated g
roo
v
e
drive roll
a
n
d
i
nsu
l
a
t
ed
idler roll ass
y
.
I
nsulated Groove Drive Roll Ki
t
..........................
K
P1594-035
......
005-0641
Fo
r
.
035
"
(
0.9mm
)
dia. aluminum wire. Includes insulated g
roo
v
e
drive roll
a
n
d
i
nsu
l
a
t
ed
idler roll ass
y
.
I
nsulated Groove Drive Roll Ki
t
..............................
n
/a
................
005-0642
Fo
r
.
0
4
0
"
(
1.0mm
)
dia. aluminum wire. Includes insulated g
roo
v
e
drive roll
a
n
d
i
nsu
l
a
t
ed
idler roll ass
y
.
I
nsulated Groove Drive Roll Ki
t
.........................
KP1594-3/64
......
005-0643
Fo
r
.
0
4
5
"
(
1.2mm
)
dia. aluminum wire. Includes insulated g
roo
v
e
drive roll
a
n
d
i
nsu
l
a
t
ed
idler roll ass
y
.
I
nsulated Groove Drive Roll Ki
t
.........................
K
P1594-1/16
.......
005-0644
Fo
r
.
062
"
(
1.6mm
)
dia. aluminum wire. Includes insulated g
roo
v
e
drive roll
and insulated idler roll ass
y
.
H
a
n
d
l
e
Ki
t
.........................................................................................
005
-
0699
I
n
cludes
left and ri
g
ht handles, screws and drive roll door.
Tri
gg
er Kit.........................................................................................
00
5-
0694
T
ri
gg
er ad
j
ustment kit includes a sprin
g
and sensitivit
y
ad
j
ustment screw
replacement for all Python
-Plus
guns.
s
M
i
c
r
o
S
wi
tc
h Ki
t
...............................................................................
005
-
0
7
01
R
eplacement micro switch assembl
y
for all P
y
thon
g
uns.
P
ote
n
t
i
o
m
ete
r Ki
t
.............................................................................
005
-
0695
R
eplacement potentiometer assembly for all Python guns.
S
nake
S
kin
s
®
S
nake
S
kin
®
protective covers are now standard on all guns. You may order
®
spare replacement covers to protect the lead assy of the torch when the
f
actory one becomes damaged or worn. It can easily be replaced in the
fi
eld
b
y
means o
f
Velcro
©
.
Snake Skin Cover 13ft (for 15ft leads)
........................................
931-011
0
S
nake
S
kin
C
over 23
f
t
(f
or 25
f
t leads
)
.
.....................................
.
931
-
0122
Snake Skin Cover 48ft
(
for 50ft leads
)
.......................................
931
-
0123
Py
thon-
P
lus
O
wner's Manual -
P
a
g
e 5
Contact Tip - 3/8" Diameter
LE P/N MK P/N Wire Size Tip ID Arc Tip Length
KP2217
-
1B1
621-0390
.
030"(0.8mm) .040"(1.0mm) Spra
y
1
.57"(39.9mm)
--
621-0396
.
030"(0.8mm) .040"(1.0mm) Short
1
-7/8"(47.6mm)
KP2217
-
2B1
621-0391
.
035"(0.9mm) .045"(1.1mm) Spra
y
1
.57"(39.9mm)
--
621-0397
.
035"(0.9mm) .045"(1.1mm) Short
1
.82"(46.2mm)
--
621-0392
.
047"(1.2mm)
.
054"(1.37mm) Spra
y
1
.57"(39.9mm)
--
621-0398
.
047"(1.2mm)
.
054"(1.37mm) Short
1
.82"(46.2mm)
KP2217
-
4B1
621-0393*
.
047"(1.2mm) .060"(1.5mm) Spra
y
1
.57"(39.9mm)
--
621-0399
.
045" or .052" .060"(1.5mm) Short
1
-7/8"(47.6mm)
K
P2217-5B1 621-0394
1
/16"(1.6mm) .074"(1.9mm) Spra
y
1
.57"(39.9mm)
--
621-0400
1
/16"(1.6mm) .074"(1.9mm) Short
1
-7/8"(47.6mm)
--
621-0395
1
/16"(1.6mm)
.
085"(2.16mm) Spra
y
1
-5/8"(41.3mm)
*
Standard - furnished with torch.
To Remove contact tip when using full water cooled gas cup
(
P/N 621-0065
)
, contact tip removal tool
(
P/N 931-0002
)
must
be
use
d
.
Contact Tip
s
Finned Copper Cup
s
Finned Copper Gas Cups
Cup Size Cup I.D. MK P/N LE P/N
No.
6
3/
8"
(
9.25mm
)
621
-
02
4
8
K
P
2213
-
1
No.
8
1/2" (12.7mm
)
6
21-0249
KP2214
-
1
No. 1
0*
5
/8"
(
15.8mm
)
6
21-
0
2
50
K
P221
5
-1
Heavy Duty Finned Copper Gas Cups
Cup Size Cup I.D. MK P/N LE P/N
No.
10
5
/
8"
(
15.8mm
)
621
-
0251
K
P
2216
-
1
No.
12
3
/
4"
(
19.0mm
)
621
-
02
5
2
--
*
Stan
d
ar
d
-
f
urnis
h
e
d
wit
h
torc
h
Torch Barrel Liners
Part Number Description
LE KP
22
44-
1
M
K
6
21-
0
424
Tip Extender (Air/Water cooled barrel only)
615
-
01
7
8
Bulk Te
fl
on Liner
LE KP
2226
-
1
M
K
931
-
013
7
Li
ner
P
ac
k
age, 5 p
i
eces
Py
thon-
P
lus
O
wner's Manual -
P
a
g
e
6
B
arre
l
A
ssem
bli
es
A
ll barrels are rated at 100% dut
y
c
y
cle
B
a
rr
e
l
s
Air Cooled
Th
e
P
yt
h
on
-Pl
u
s
guns come standard with a 60˚ curved barrel. The barrel
s
assembl
y
locks to the P
y
thon
®
body using the patented EZ Lock™ system.
®
B
a
rr
e
l R
e
m
o
v
a
l
a
n
d
In
sta
ll
at
i
on
T
o remove t
h
e
b
arre
l
assem
bl
y,
l
oosen t
h
e patente
d
EZ
L
oc
k™
T
aper
l
oc
k
nut until it is clear o
f
the threads. Pull barrel out o
f
the gun body.
T
o replace a barrel assembl
y
, open the drive and idler roll door and seat the
b
arre
l
assem
bl
y unt
il
t
h
e
i
n
l
et gu
id
e
i
s a
l
most touc
hi
ng t
h
e
d
r
i
ve an
d
idl
er ro
ll
and the rear
f
ace o
f
the barrel is
fl
ush with the aluminum body block. Take
care not to dama
g
e the “O” rin
g
s when insertin
g
into the bod
y
. Ti
g
hten taper
lock nut assembly fi rmly so that barrel cannot rotate.
B
arre
l
R
otat
i
o
n
T
o rotate a barrel assembl
y
, loosen the patented EZ Lock™ Taper lock nut
assembly no more than 1 turn. Rotate barrel to the position of your choice
and retighten taper lock nut assembly
fi
rmly so that the barrel cannot rotate.
WARNIN
G
: Do not attempt to weld without the barrel bein
g
ti
g
htl
y
s
ecure
d
i
n t
h
e torc
h
b
o
d
y, or
d
amage to t
h
e
b
arre
l
or
b
o
d
y may resu
l
t
.
Section D Maintenance
P
e
ri
od
i
c
M
a
in
te
n
a
n
ce
Your
C
obramatic
®
System is designed to provide years of reliable
®
service.Maintenance of the torch will normally consist of a general cleaning
of
the wire guide system, including barrels, drive rolls, and conduits at regular
int
e
rv
a
l
s
.
R
emove s
p
atter build-u
p
from inside of nozzles with a hardwood stick.
T
he only parts on the
C
obramatic
®
system that are subject to normal wear
®
are the conduit, contact tips,
g
as cups, front bod
y
liners, wire
g
uides, drive
and idler rolls. A supply of these parts should be maintained on hand.
T
he number o
f
units in operation and the importance o
f
minimal
“
down time”
will determine to what extent s
p
are
p
arts should be stocked on hand. See
t
he “Recommended Spare Parts List” for the most commonly replaced parts.
I
f
repairs do become necessary, quali
fi
ed shop maintenance personnel can
easil
y
replace an
y
part.
Maintenance Tools
Tool Part Number
D
riv
e
R
o
ll R
e
m
o
v
a
l T
oo
l
931
-
0100
Py
thon-
P
lus
O
wner's Manual -
P
a
g
e 7
K
n
u
r
led
D
r
i
v
e
Roll
L
E P
/
N KP221
9
-1
M
K P
/
N
5
11-
0
1
0
1
Driv
e
R
o
ll R
e
m
o
v
a
l T
ool
93
1-
0
1
00
Micro
S
witch Assembl
y
005
-
0
7
0
1
I
d
l
e
r R
o
ll Ki
t
LE P/N KP2220-1
M
K P/N 005-0686
Recommended Spare Parts List
Qty. Part No. Description
1
L
E KP24
63
-1
M
K
6
1
5
-
0603
-1
5
C
onduit - 1
5
ft
1
L
E KP2463-2
M
K 615-0603-25
Conduit - 25 ft
1
L
E KP24
63
-
3
M
K
6
1
5
-
0603
-
50
Conduit - 50 ft
1
4
3
7-
02
5
3
D
r
i
ve
R
o
ll
D
oor
2
00
5-
069
4
T
r
i
gger
A
ssy.
Kit
2
00
5-
069
5
P
otent
i
ometer
A
ssy.
Kit
1
00
5-
0699
H
an
dl
e
Ki
t
2
00
5-
0
7
01
Micro-
S
witch Assy. Ki
t
10
L
E KP221
9
-1
M
K
5
11-
0
1
0
1
Driv
e
R
o
ll
5
L
E KP222
0
-1
MK
005
-
0686
I
d
l
e
r R
o
ll Kit
Py
thon-
P
lus
O
wner's Manual -
P
a
g
e
8
Section E Troubleshooting
Trouble Cause Remedy
N
o wire
f
eed at
t
orch, feeder not
o
perat
i
ng,
i
.e. no
s
lave motor or brake
so
l
e
n
o
i
d
.
115
/
42 VA
C
C
ontrol
f
use in
feeder
/C
ontrol box blown.
R
e
p
lace fuse.
Micro-switch de
f
ective
/
not
bein
g
activated.
R
eplace switch.
C
heck
s
witch for o
p
eration.
Br
o
k
e
n
e
l
ec
tri
ca
l
cab
l
e
.
C
heck micro-switch
wires for continuit
y
.
N
o wire
f
eed at
t
orch, feeder
o
perat
i
ng proper
l
y.
24 VA
C
C
ontrol fuse in
feeder/Control box blown.
C
heck motor leads for
sh
orts; t
h
en re
pl
ace
f
use
.
B
a
d
p
otent
i
ometer
.
C
heck potentiometer
with meter.
Broken Electrical
C
able.
C
heck motor and
potentiometer wires for
c
ont
i
nu
i
ty.
Bad S
p
eed control/PCB
See s
p
ecifi c cabinet
/
c
ontro
l
b
ox owners
manual
f
or speed
c
ontro
l
o
p
erat
i
on.
Wire
f
eeds
,
but
weldin
g
wire is not
energ
i
ze
d
.
L
oose
o
r n
o
cab
l
e
co
nn
ec
t
io
n
s
.
C
heck all
p
ower
co
nn
ec
t
io
n
s
.
C
ontactor control cable
l
oose or
i
n wrong pos
i
t
i
on.
C
heck power suppl
y
o
wners manual for
location and type
o
f contactor si
g
nal
re
q
u
i
re
d
.
W
e
ldi
n
g
power source.
C
heck
p
ower source.
Wir
e
f
eeds
errat
i
ca
ll
y
.
D
irt
y
or worn conduit.
Blow out or re
p
lace
c
on
d
u
i
t.
W
ron
g
s
i
ze contact t
i
p. See Contact ti
p
table.
Idle
r r
oll
s
t
uck
.
C
heck for lock washer
un
d
er
idl
er ro
ll,
or
replace i
f
damaged.
Wir
e
feeds
o
n
e
s
pee
d
on
l
y
.
B
a
d
p
otent
i
ometer
.
C
heck with meter.
B
ro
k
en e
l
ectr
i
ca
l
ca
bl
e.
C
heck
p
otentiometer
wires
f
or continuity or
s
h
o
rt
.
Bad speed control.
S
ee speci
fi
c cabinet
/
co
ntr
o
l
o
wn
e
r
s
m
a
n
ua
l
for s
p
eed control
o
peration.
Wire walks out o
f
d
rive rolls.
Idl
er ro
ll
u
p
s
id
e-
d
own.
Pl
ace groove
i
n
idl
er
roll toward top.
R
ear wire guide missing.
R
eplace wire guide.
Py
thon-
P
lus
O
wner's Manual -
P
a
g
e
9
Troubleshootin
g
G
uid
e
R
e
g
ardless o
f
which torch or
f
eeder used, all MK Products’ push-pull
g
uns
op
erate on the same
p
rinci
p
le. The slave motor in the feeder runs at a fast,
constant speed, but has very low torque. It is always trying to
f
eed more wire
t
han the torch motor wants, and when the motor
g
ets all it wants, it slows the
slave motor, preventin
g
a bird’s nest. Because of the low torque produced b
y
th
e s
l
ave motor, a
b
ra
k
e system
i
s use
d
to prevent w
i
re overrun rat
h
er t
h
an
t
ension. The dra
g
ad
j
ustment in the
f
eeder is used simpl
y
to keep the wire
sli
g
htl
y
taut, so it will not pull off the spool while feedin
g
wire.
T
he high torque 24VD
C
torch motor is controlled by a solid state speed
control located in the feeder, and a
p
ot located in the torch. The torch motor,
p
otentiometer, and micro switch are connected to the cabinet/control box via
a control cable and Amphenol connector. I
f
this cable becomes dama
g
ed, a
variet
y
of s
y
mptoms can occur, dependin
g
on which wire
(
s
)
break. To test,
check each wire for continuity and shorts.
R
emember, the micro switch in the torch activates both the slave motor and
t
orch motor circuits in the cabinet. Therefore
,
if the slave motor and brake
solenoid operate, but the torch does not, look more toward the torch motor’s
24V circuits, speed control, control cable, or the torch motor. If nothin
g
op
erates, look more toward the slave motor
’
s in
p
ut, micro switch leads, or
micro switch.
Testing The
G
u
n
R
e
f
erence the "W" clocked torch wiring diagram on
t
h
e
P
yt
h
on
®
Electrical Diagram for information
®
a
b
out p
i
n-outs an
d
l
ocat
i
ons.
M
otor Chec
k
R
emove the torch connector
f
rom the cabinet.
U
sin
g
the torch Amphenol connector, check the resistance across pins
“
A”
an
d
“B
” (motor leads). The resistance across the motor should be between
5
-
10
o
hm
s
as the potentiometer is turned.
If an o
p
en circuit or short exist, check the motor leads and motor
i
n
d
epen
d
ent
l
y.
Testing the Potentiometer - “W”
C
locke
d
U
sin
g
the torch Amphenol connector, check the resistance across pin
“
D”
(
wiper) and pin “C
”
. The resistance should vary from
0
- 5K ohm
s
as t
h
e
potentiometer is turned.
C
heck the resistance across
p
in
“
D
”
(
wiper
)
and pin “
G”
. Th
e
r
es
i
s
t
a
n
ce
should vary from 5K - 0 ohms as t
h
e
p
otent
i
ometer
i
s turne
d
.
Testing the Micro
S
witc
h
U
sin
g
the torch Amphenol connector, check for continuit
y
across pins
“
E”
a
n
d
“
F
”
when the tri
gg
er is pressed.
THIS PAGE INTENTIONALLY BLANK
Py
thon-
P
lus
O
wner's Manual -
P
a
g
e
11
S
ection
F
App
en
di
ce
s
Diagrams / Parts List
P
y
thon-
P
l
us
Exploded View
s
...............................................................
...........
12
Py
t
h
on-
Plus
Bill of Material
s
...............................................................
............
1
3
P
yt
h
on
F
ront
B
o
d
y
A
ssem
bl
y
...............................................................
........
14
A/
W Barrel Assembl
y
...............................................................
......................
15
Py
t
h
on-
Plus
Electrical
s
...............................................................
....................
1
6
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