thon-
lus
wner's Manual -
a
e
Troubleshootin
uid
e
ardless o
which torch or
eeder used, all MK Products’ push-pull
uns
erate on the same
rinci
le. The slave motor in the feeder runs at a fast,
constant speed, but has very low torque. It is always trying to
eed more wire
han the torch motor wants, and when the motor
ets all it wants, it slows the
slave motor, preventin
a bird’s nest. Because of the low torque produced b
e s
ave motor, a
ra
e system
s use
to prevent w
re overrun rat
er t
an
ension. The dra
ad
ustment in the
eeder is used simpl
to keep the wire
sli
htl
taut, so it will not pull off the spool while feedin
wire.
he high torque 24VD
torch motor is controlled by a solid state speed
control located in the feeder, and a
ot located in the torch. The torch motor,
otentiometer, and micro switch are connected to the cabinet/control box via
a control cable and Amphenol connector. I
this cable becomes dama
ed, a
variet
of s
mptoms can occur, dependin
on which wire
s
break. To test,
check each wire for continuity and shorts.
emember, the micro switch in the torch activates both the slave motor and
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
erates, look more toward the slave motor
s in
ut, micro switch leads, or
micro switch.
Testing The
u
e
erence the "W" clocked torch wiring diagram on
t
e
yt
on
Electrical Diagram for information
a
out p
n-outs an
ocat
ons.
otor Chec
emove the torch connector
rom the cabinet.
sin
the torch Amphenol connector, check the resistance across pins
A”
an
” (motor leads). The resistance across the motor should be between
-
hm
as the potentiometer is turned.
If an o
en circuit or short exist, check the motor leads and motor
n
epen
ent
y.
Testing the Potentiometer - “W”
locke
sin
the torch Amphenol connector, check the resistance across pin
D”
wiper) and pin “C
. The resistance should vary from
- 5K ohm
as t
e
potentiometer is turned.
heck the resistance across
in
D
wiper
and pin “
. Th
r
i
t
n
should vary from 5K - 0 ohms as t
e
otent
ometer
s turne
.
Testing the Micro
witc
sin
the torch Amphenol connector, check for continuit
across pins
E”
n
F
when the tri
er is pressed.