910.100.276GB REV00 11 di 28
Cutting gas connection
Check if the pressure and air flow rates are in accordance with to the values required by the torch
The plasma cutter uses a jet of compressed air both for the blowing of the arc and for cooling the torch The air circuit
includes a pressure regulator, adjusted to 3.5 bar.
In any case the air supply must provide a minimum flow of 150 l/min. When the cutting arc is triggered, a second
solenoid valve is opened allowing the flow of the primary air flow. This valve allows the passage of air only when
properly controlled by electronic logic, during the pre-flow, post-flow, cutting or when directly activated by button "AIR
TEST".
Mains connection
Before making the connection of the unit to the network, verify that the supply voltage is 400 VAC ± 10%.
ATTENTION, if the voltage exceeds 440Vac, the generator stops.
Voltages over 460 VAC can seriously damage the generator.
PROTECTIONS
The generators have different internal protection:
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Protection against maximum voltage of the mains.
−
Protection against minimum voltage of the mains.
−
Thermal Protection:
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Inverter overcurrent protection
−
Electromagnetic circuit breaker
a) Maximum value of input voltage:
The generators are protected against mains voltage irregularities. Avoid exceeding the threshold MIN and MAX
allowed.
b) Thermal Protection:
The generators are designed for use at a temperature between -20 °C to +40 °C. If the temperature were to rise
beyond the preset limits or the duty-cycle was exceeded, special internal temperature sensors stop the operation
(resulting in the LED lighting). When operating conditions are restored, the generator resume the operation.
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