9
WELDER SPECIFICATIONS
DESCRIPTION
Your new MIG (GMAW) flux core (FCAW)
wire feed welder is designed for mainte-
nance and sheet metal fabrication. The
welder consists of a single-phase power
transformer, stabilizer, rectifier, and a
unique built-in control/feeder.
Now you can weld sheet metal from 24
gauge up to 1/4 inch thick with a single
pass. You can weld thicker steel with bevel-
ing and multiple pass techniques. Table 1
lists your MIG welder specifications.
Table 1. Welder Specifications
Primary (input) Volts 230 VAC
Primary (input) Amps 22.5
Phase Single
Frequency 60Hz
Secondary (output) volts 20
CSA rated output amps 120
Open Circuit Volts (Max.) 30 VDC
Duty Cycle Rating 25%
MIG welders equipped with gas are capable
of welding with 0.023 (0.6mm) and 0.030
(0.8mm) solid steel wire on DC reverse polar-
ity and with 0.030 (0.8mm) self-shielding flux-
core wire on DC straight polarity. Larger,
0.035 inch (0.9mm) diameter solid steel wire,
on dc reverse polarity may also be used on
this welder. The use of larger diameter wire
makes welding difficult and the results cannot
be guaranteed. Use of larger than .035 diam-
eter wire is not recommended.
WELDER OPERATING
CHARACTERISTICS
DUTY CYCLE
The duty cycle rating of a welder defines how
long the operator can weld and how long the
welder must be rested and cooled. Duty cycle is
expressed as a percentage of 10 minutes and
represents the maximum welding time allowed.
The balance of the 10-minute cycle is required
for cooling. Your new welder has a duty cycle
rating of 25% at the rated output. This means
that you can weld for two-and-a-half (2.5) min-
utes out of 10 with the remaining seven-and-a-
half (7.5) minutes required for cooling. (See
Table 2).
Table 2. Duty Cycle Ratings
Duty Maximum Required
Cycle Welding Resting
Rating Time Time
20% 2 minutes 8 minutes
25% 2.5 minutes 7.5 minutes
40% 4 minutes 6 minutes
60% 6 minutes 4 minutes
80% 8 minutes 2 minutes
100% 10 minutes 0 minutes
INTERNAL THERMAL PROTECTION
CAUTION
Do not constantly exceed the duty cycle or
damage to the welder can result. If you
exceed the duty cycle of the welder, an inter-
nal thermal protector will open, shutting off
all welder functions except the cooling fan. If
this happens, DO NOT SHUT OFF THE
WELDER. Leave the welder turned on with
the fan running. After cooling, the thermal
protector will automatically reset and the
welder will function normally again.
However you should wait at least ten min-
utes after the thermal protector opens
before resuming welding. You must do this
even if the thermal protector resets itself
before the ten minutes is up or you may
experience less than specified duty cycle
performance.
If you find that the welder will not weld for
two minutes without stopping, reduce the
wire speed slightly and tune in the welder at
the lowest wire speed setting that still pro-
duces a smooth arc. Welding with the wire
speed set too high causes excessive current
draw and shortens the duty cycle.
