Duty Cycle; Thermal Protection - STAMOS S-CUTTER 50.1 Manuel D'utilisation

• Use only pistols listed in the instruction manual.
• When activating the release, keep the pistol tip and the arc away from your body.
• Attach the working cable to an appropriate metal contact of the welded workpiece (not to an element
which may fall off) or to the work table as close to the welder as seems appropriate.
• The working clamp is to be insulated, unless it is connected to the workpiece, in order to avoid contact
with metal.
After disconnecting the supply cable, the device may still contain SIGNIFICANT VOLTAGE.
After turning the device off and disconnecting the supply cable, check the voltage on the input capacitor and
ensure the voltage value is zero, otherwise do not touch any element of the device. The capacitors are to be
inspected in accordance with the guidelines in the operation section of this manual.
ELECTRIC SHOCK may be lethal.
Unsecured elements of the rectifier may explode at the moment of turning on the power supply. When using
the rectifier, always use a protective mask and working clothes with long sleeves.
EXPLODING PARTS OF THE DEVICE may cause injury.
Metal splinters during welding constitute a health hazard.
SPLINTERS AND SPARKS may cause injuries.
• Always wear a protective mask with side shield.
• Always wear appropriate protective clothes in order to protect your body.
• Always wear earplugs or other hearing protection in order to prevent the
• splinters from entering your ears.
• During welding, the electric arc generates significant amount of visible and invisible radiation (UV and
IR radiation) which may damage eyesight and skin.
ELECTRIC ARC RADIATION may damage eyesight and skin.
• Always use face protection (helmet or shield) and eye protection with glass with appropriate tint, acting
as filter and protecting the eyes during cutting.
• Safety standards propose tint no. 9 (no. 8 at minimum) for every current intensity below 300 A. A lower
shield tint may be used if the arc covers the workpiece.
• Always use permitted safety goggles with side shield under the helmet or another protection.
• Use workplace shields in order to protect other people against blinding light or splinters. Warn
bystanders not to look at the electric arc.
• Use protective clothes made of non-flammable and non-conductive material (leather, thick wool or
cotton) and appropriate working footwear.
CURRENT ADJUSTMENT
An automatic protective circuit prevents voltage surges above the rated value specified in the technical
details of the device.

THERMAL PROTECTION

The thermal protection system is activated when the device exceeds the activation time. It causes the device
to switch off. The status indicator on the front panel glows. The fan works until the device is cooled. After
cooling the device to the operational temperature, it can be restarted.
EN
Rev. 19.09.2020
14

DUTY CYCLE

The duty cycle is the percentage of the operating time (measured in minutes) of a 10-minute period in
which the machine is used continuously in normal temperature conditions. If the values of the duty cycle
are exceeded, this will trigger the overheat protection function, which stops the machine until it is cooled
down to normal operating temperature. Repeated situations of exceeding the duty cycle values may lead to
serious damage of the machine.
EXPLANATION
On
1
ON/OFF SWITCH.
Off
2
CURRENT / CURRENT CONTROLLER: Main current is adjustable.
OVERLOAD / FAULT LED INDICATOR:
3
The indicator lights in the following two situations:
a) If the machine has malfunctioned and can not be operated
b) If the cutting device has exceeded the standard working time the protection
mode is initiated and the machine will stop functioning. This means that the ma-
chine is now being cooled in order to be able to restore temperature control
again after the device has overheated. Therefore the machine is stopped. During
this process, the red warning light on the front panel lights up. In this case it is
not necessary to remove the power plug from the socket. The ventilation sys-
tem may be left on in order to enhance the cooling of the machine. When the
red light goes dark, this means that the temperature is now down to the normal
level and the unit can be put back into operation.
4
POWER INDICATOR: This indicator lights up after turning the machine on.
LED - DISPLAY: Displays the current amperage.
5
PORTS FOR PLASMA TORCH:
The high energy density of the plasma arc enables a high cutting speed with a
6
warp-free cut quality. No special gas is required and the possibility to use regular
air pressure along with easy handling
of the unit are a guarantee of easy use in car bodies, containers, steel construction,
the HVAC industry as well as in installations and plumbing.
7
GROUNDING CABLE CONNECTION.
Rev. 19.09.2020
EN
15