Description; Operating The Welder; Duty Cycle; Internal Thermal Protection - Century OM-117071002 Operator's Manual

DESCRIPTION
Your new Wire Feed welder is designed
for maintenance and sheet metal
fabrication. The welder consists of a
single-phase power transformer, and a
unique built-in control/feeder. This
welder is capable of welding with 0.030
inch self-shielding flux-core wire.
Now you can weld 18 gauge sheet
metal up to 3/16 inch with a single pass.
You can weld 1/4 inch steel with
beveling and multiple pass techniques.
Table 2 lists your wire feed welder
specifications.
Table 2. Welder Specifications
Primary (input) volts
Welding Range
Primary (inputs) Amps
Phase
Frequency
Secondary (output) volts
Secondary (output) amps
Duty Cycle Rating at 80 amps
Open Circuit Volts (Max.)
120 Vac
60 - 120 Amps
20
Single
60 Hz
17
80
20%
25 Vac
OPERATING THE WELDER
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 20% at the CSA rated output of 80
amps. This means that you can weld for
two (2) minutes out of 10 with the
remaining eight (8) minutes required for
cooling. (See the table 3.)
Table 3. Duty Cycle Ratings
Duty Maximum Required
Cycle Welding Resting
Rating Time Time
20% 2 minutes 8 minutes
40% 4 minutes 6 minutes
60% 6 minutes 4 minutes
80% 8 minutes 2 minutes
100% 10 minutes 0 minutes
CAUTION
Do not constantly exceed the duty
cycle or damage to this welder can
result.
INTERNAL THERMAL
PROTECTION
If you exceed the duty cycle of your
welder, the HIGH/LOW switch will
illuminate, an internal thermal protector
will open and shut off all welder
functions. After cooling, the thermal
protector will automatically reset and the
welder will function normally again.
CONTROLS AND INDICATORS
WARNING
ELECTRIC SHOCK CAN KILL!
To remove the risk of electric shock,
be aware that the POWER switch,
when OFF, does not remove power
from all internal circuitry in the
welder.
The HIGH/LOW RANGE SWITCH
controls the main power to the welder
lights up when the dugy cycle has been
exceeded and selects the two main heat
ranges. When the switch is OFF, there
is still power to some areas of the
welder. When working inside the welder
or when removing panels on the welder,
make sure the welder is unplugged from
the wall outlet.
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