20
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tuning, it should not be necessary to adjust this control when the
welding current is changed.
NOTE:
Listen to the sound made. An irregular crackling sound denotes
too high a wire speed. Decrease the speed until a regular, strong
buzzing sound is heard.
THERMAL OVERLOAD
The ‘Thermal Overload’ shuts off the
welder when it becomes too hot due
to the duty cycle being exceeded.
This is to prevent any damage to the
machine.
When this occurs, the warning lamp
shown will glow (amber). Allow the
welder to cool, until the amber light
extinguishes before resuming work.
DUTY CYCLE
The duty cycle determines the machine ‘down time’. i.e 10% means 1 minutes operation
followed by 9 minutes of rest.
The duty cycle must be followed to prevent the thermal
cutout protection from activating
These welders are covered by
regulations EN 60974-1 and EN 50199,
where the duty cycle is expressed as
a percentage of time the machine
may be used in a given period for a
specified welding current.
Using illustration of the data plate
shown;-
e.g. when welding at 98 amps the
machine may be used for 6 minutes
(60%) in any 10 minute period.
Do not exceed the stated duty cycle for this machine. Failure to heed
this warning may invalidate your warranty.
Duty Cycle (%)
10
60
100
Rated Welding Current (A)
240
98
75
Conventional Load Voltage (V)
26
19.5
17.7
Содержание MIG 240
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