Helvi PC 73 Manual De Uso Y Manutención página 24

TROUBLESHOOTING
SYMPTOM
Green Led (4) OFF, Fan not operating. No Input
Power.
Green Led ON, YELLOW Overtemperature LED
ON. Unit is overheated.
Green Led ON, Bar Led blinks, acoustic alarm
Green Led ON, Bar Led blinks
Green Led ON, Overvoltage or undervoltage/no
phase Led ON. Unit doesn't work.
Green Led ON, Amp Led ON, all other Leds OFF,
no air flow once torch trigger is pressed.
Green Led ON, Amp Led ON, all other Leds OFF,
air flows once torch trigger is pressed. Torch doe-
sn't strike the arc.
Torch has pilot arc but does not cut.
24
POSSIBLE CAUSE AND REMEDY
1. Plug unit into 380/400V outlet.
2. Reset Breaker.
1. Make sure the unit has not been operated
beyond duty cycle limits.
2. Air Flow obstructed. Ensure at least 0.5m of
free space around the unit.
1. Air not connected or pressure under 3,5bar.
Check source for at least 4 Bar during purge or
pre-flow, adjust air pressure to optimal 5,2 Bar.
2. Air line blocked, torch blocked. Check that air
line and torch leads are free of twists and kinks.
1. Air pressure too low, between 3,5 and 4,0bar
or over 6,5bar. Check source for air pressure
between 4,0 and 6,0 Bar during purge or pre-
flow, adjust air pressure to optimal 5,2 Bar.
2. Air line blocked, torch blocked. Check that air
line and torch leads are free of twists and kinks.
1. Wrong input voltage. Check power supply for
correct line voltage. If unit doesn't restart, contact
a Service Center.
1. Shield cup not properly installed on torch.
Check that shield cup isfully seated against torch.
2. Faulty Torch Switch or Parts Assembly in torch
holder. Refer to Maintenance paragraph.
3. Faulty Main PC Board Repair / Replace Power
Supply.
1. Faulty torch parts. Inspect torch parts and re-
place if necessary.
2. Faulty main PC Board. Repair /replace.
1. Work lead not connected. Make sure work lead
is connected securely to bare metal.
2. AC input power too low. Use shortest distance
to breaker panel possible.
3. Faulty Main PC Board.Repair/Replace.