EX-TRAFIRE
®
100SD
Operator manual, Revision T-5
7-47
SECTION 7�
TROUBLESHOOTING
SECTION 7: TROUBLESHOOTING
Fault
This may mean Cause
Solution
Main switch
is ON and the
AC power
LED1 fails to
illuminate�
• No / low voltage
of mains power
source�
• Insufficient mains
power source�
• Check the mains input
voltage 3 x 400 VAC ± 15%
• Check internal control board
supply�
• The mains power
lead is not plugged
in to a live socket�
• Plug the mains power lead
in to a live socket�
• Main power switch
is defective�
• Replace the main power
switch�
Note: The fan turns ON and OFF automatically� The fan may not run when
the plasma arc power supply is switched on�
The LED4
illuminates�
• Over-
temperature (OT)
• Fan fault�
• Ensure fan is free running,
correct condition�
• Duty cycle over
limit�
• Allow the power supply to
cool down and reset� Do not
exceed the rated duty cycle�
• Over-current
(OC)
• Some of power
supply inside
component is over
lifetime or burned
out�
• Contact your distributor�
The LED2
illuminates�
•
Gas pressure
fault�
•
The gas input
pressure is lower
than 2�4 bar/35 psi�
•
Check gas supply input
pressure�
• Damaged torch
lead�
• Replace the torch lead�
• Pressure switch
fault�
• Incorrect pressure�
• Change the pressure switch
inside the power supply�