Forney MIG 180FI, Руководство по эксплуатации

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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 beveling 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 0.024 (0.6mm), 0.030
(0.8mm), and 0.035 (0.9mm) solid steel,
bronze or aluminium wire on DC reverse
polarity and with 0.030 (0.8mm) and 0.035
(0.9mm) self-shielding flux-core wire on DC
straight polarity. The use of larger diameter
wire makes welding difficult and the results
cannot be guaranteed. Use of larger than
.035 diameter 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 2.5 minutes out of 10 with the
remaining 7.5 minutes required for cooling.
(See Table 2).
Table 2. Duty Cycle Ratings
Duty Maximum Required
Cycle Welding Resting
Rating Time Time
10% 1 minutes 9 minutes
25% 2.5 minutes 7.5 minutes
50% 5 minutes 5 minutes
75% 7.5 minutes 2.5 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 minutes 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 speci-
fied 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.