Operating Faults; Troubleshooting - Helvi PC EVO 76 Manual De Instrucciones

During cutting operations performance faults may
arise which are not caused by plant malfunctioning
but by other operational faults such as:
• Insufficient penetration:
too high cutting speed;
torch is too tilted;
piece is too thick;
cutting current too low;
torch parts are worn out;
non-genuine Manufacturer's parts;
• Interruption of the cutting arc:
cutting speed too slow;
excessive distance between torch and workpiece;
AC line too low - reduce output current;
torch parts are worn out;
non-genuine Manufacturer's parts;
work cable is disconnected;
• Excessive scoria settlement:
too low cutting speed (bottom dross);
too high cutting speed (top dross);
excessive distance between torch and workpie-
ce;
PROBLEM
Power Led OFF , Fan not operating.
No Input Power.
Power LED ON, Overtemperature
LED ON
The display views
Power LED ON, "Increase" or
"Decrease" LEDs ON
Power LED blinking
The display views
Power LED blinking
The display views
Power LED blinking
The display views

OPERATING FAULTS

•
•

TROUBLESHOOTING

POSSIBLE CAUSE
Open breaker.
Unit is overheated.
Air Flow obstructed.
Air pressure not correct
Air line blocked
Too low input voltage
Too high input voltage
Missing phase
EN-14
cutting current too low;
torch parts are worn out;
non-genuine Manufacturer's parts;
Tilted cutting (not perpendicular):
torch position not correct;
asymmetric wear of nozzle hole and/or
wrong; assemblage of the torch parts;
Excessive wear of nozzle and electrodes:
air pressure too low;
exceeding system capability (material too
thick);
contaminated air (humidity-oil);
excessive pilot arc arc ignitions in the air;
Improperly assembled torch;
torch tip contacting workpiece;
damaged or loose torch head components;
non-genuine Manufacturer's parts.
POSSIBLE SOLUTION
Plug unit into 380/400V outlet.
Reset Breaker.
Make sure the unit has not been
operated beyond duty cycle limits.
Ensure at least 0.5m of free space
around the unit.
Check that there is a correct air
pressure for the selected operation
mode.
Check that air line and torch leads
are free of twists and kinks
Check power supply for correct
line voltage. As soon as the
voltage falls within the parame-
ters allowed by the generator
the power LED is turned on and the machine restarts normal
operation. If unit doesn't restart,
contact a Service Center.