Northen MIG 135 Operator's Manual - page 12
Operating Instructions and Parts Manual
Northern Industrial Welder
10
MIG 135
MIG WELDER
4.2 Install the wire
Electric shock can kill! Always turn
the POWER switch OFF and
unplug the power cord from the AC
power source before installing wire.
NOTE:
• Before installing, make sure that you
have removed any old wire from the
torch and cable assembly. This will
help to prevent the possibility of the
wire jamming inside the gun Liner.
• Be careful when removing the
welding nozzle. The contact tip on
this welder is live when the gun
trigger is pulled. Make certain
POWER is turned OFF.
4.2.1 Remove the nozzle and contact
tip from the end of the gun assembly.
See following images for reference
4.2.2 Make sure the proper groove on
the drive roller is in place for the wire
installed. If not, change the drive
roller as described above.
4.2.3 Remove the packaging from the
spool of wire and then identify the
leading end of the wire secured in a
hole on the edge of the spool. DO
NOT UNHOOK IT AT THIS TIME.
4.2.4 Place the spool on the spool
hub with the wire coming off the
bottom of the spool. The bottom of
the spool aligns with inlet to the drive
system for smooth flow of the wire.
See following figure.
4.2.5 Both 4 and 8 inch spools can be
used, please see the following figure
about the installation onto the spool
hubs: The adjustment knob is
designed to adjust the pressure
tension of the wire spool.
4.2.6. Setting the wire spool tension:
a) Turn the spool of wire with one
hand.
b) Increase the spool tension by
tightening (turn clockwise) the wing
nut while turning the spool. Turn the
spool while tightening the wing nut
until the spool slows down and
operator feels a slight drag.
Stop tightening the wing nut, operator
may need to repeat these steps until
proper spool tension is achieved.
NOTE
:
If TOO MUCH tension is applied to
the wire spool, the wire will slip on the
drive roller or will not be able to feed
at all. If TOO LITTLE tension is
8’ spool
8” spool
Adaptor
4” spool
Wing
nut