Operating Instructions and Parts Manual
6
www.campbellhausfeld.com
If the nuts are not tightened properly,
excessive heat will be generated by
the loose connection and the insulators on the studs will be
damaged.
sHielding gas preparation
Improper handling and maintenance of
compressed gas cylinders and regulators
can result in serious injury or death! Always secure gas
cylinders to a wall or other fixed support to prevent cylinder
from falling over. Read, understand and follow all compressed
gas and equipment warnings in the safety instructions.
NOTE: Shielding gas is not required if flux-core welding wire is
used.
gas types
There are 3 types of gas generally used for gas metal arc
welding; 100% argon, a mixture of 75% argon and 25% carbon
dioxide (C25) or 100% carbon dioxide.
Use ONLY the type of gas recommended
for your welder. Use ONLY an inert, non-
flammable type of gas. Failure to do so will result in a very
hazardous situation.
The 75/25 mixture is recommended for general steel welding.
For aluminum welding, use 100% argon. Cylinders of either type
gas may be obtained at your local welding supply outlet. Secure
cylinder to prevent it from falling over.
6. Feed wire through wire guide, over the
groove in drive roller and back into
wire guide. Flip swing arm down and
tension knob up. Adjust tension by
rotating tension knob.
7. Unscrew nozzle and contact tip from
end of welding torch (See Figure 5).
Plug welder into a proper power supply
receptacle.
8. Turn on welder and set wire speed
to 10. Activate torch trigger until wire
feeds out past the torch end.
Turn
welder off.
9. Carefully slip contact tip over wire,
screw tip into torch end and reinstall
nozzle (See Figure 5). Cut wire off
approximately 1/4 inch from nozzle
end.
duty CyCle / tHermostatiC
proteCtion
Welder duty cycle is the percentage of
actual weld time that can occur in a ten
minute interval. For example, at a 20%
duty cycle, actual welding can occur for
two minutes, then the welder must cool for
eight minutes.
Internal components of this welder are
protected from overheating with an
automatic thermal switch.
A red lamp is illuminated on the
front panel if the duty cycle is exceeded. Do not switch
unit off. This will allow the internal fan to cool the unit quickly.
Welding operations may continue when the red lamp is no
longer illuminated.
oVerload proteCtion
The welder is equipped with a circuit breaker which protects the
machine if the maximum output is exceeded, such as when the
output is short-circuited. The circuit breaker button will extend
out when tripped. Manually push the button in to reset.
polarity
MIG welding wire requires the electrode to be positive.
Flux welding wire requires the electrode to be negative.
Always use the polarity recommended by the welding wire
manufacturer. The welder is factory set for flux welding wire.
To ChanGe PolariTy (see FiGure 6)
1. Unplug power cord from socket.
2. Open wire feed compartment door.
3. Remove two nuts from polarity studs.
4. Connect cable from drive deck to positive stud and cable
from work clamp to negative stud for electrode positive
polarity for MIG welding. Connect cable from drive deck to
negative stud and cable from work clamp to positive stud for
electrode negative polarity for flux core welding.
5. Reinstall two nuts and tighten securely.
Assembly (Continued)
Figure 6 - Polarity Control
Ground Cable
Drive Deck Cable
Positive Stud
Negative Stud
Brass Nuts
NOTE: Electrode negative
polarity (typical for flux core
welding) shown in figure.
Reverse cables for electrode
positive polarity (typical for
MIG welding).
