Clarke HOTSHOT 185SG WE6442 Manuel De L'opérateur page 8

DESCRIPTION
Your new MIG (Metal Inert Gas) wire feed
welder is designed for maintenance and
sheet metal fabrication. The welder consists
of a single-phase power transformer,
stabilizer, rectifier, and a unique spool gun
wire feeder.
Now you can weld sheet metal from 18
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
Primary (input) Amps
Phase
Frequency
Secondary (output) volts
Secondary (Max. output) amps 150
Open Circuit Volts (Max.)
Duty Cycle Rating (CSA)
MIG welders equipped with gas are capable
of welding with 0.024 (0.6mm) and 0.030
(0.8mm) solid steel, bronze or aluminum wire
on dc reverse polarity and with 0.030
(0.8mm) and 0.035 inch (0.9mm) self-shield-
ing flux-core wire on dc straight polarity. The
use of larger diameter wire makes welding
difficult and the results cannot be guaran-
teed. 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.
This 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
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WELDER SPECIFICATIONS
220 Vac
22.5
Single
60Hz
20 Vdc
30 Vdc
25%@120A
remaining 7.5 minutes required for cooling.
(See Table 2).
Table 2. Duty Cycle Ratings
Duty Maximum
Cycle Welding
Rating Time
10% 1 minutes
25% 2.5 minutes
50% 5 minutes
75% 7.5 minutes
100% 10 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
2.5 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.
Required
Resting
Time
9 minutes
7.5 minutes
5 minutes
2.5 minutes
0 minutes