Troubleshooting And Fault Finding - HBM Machines ARC 200 Handbuch

9. TROUBLESHOOTING AND FAULT FINDING:

1. ARC 200 fault symptom and remedy
Fault symptom
No display meter, Power
indicator is not lit, fan
does not work, no
welding output.
No display meter, fan
works, welding output,
abnormal indicator does
not lit.
Normal meter display,
power indicator is lit,
welding output, fan does
not work
Normal meter display,
power indicator is lit, Fan
is working, Welding
output current instability
or without potentiometer
control
Normal meter display,
power indicator is lit, fan
is working but abnormal
indicator is not lit, no
welding output.
1. Make sure power switch is close.
2. Confirm the power input cable receive electricity.
3. Whether the two pieces 7W47R cement resistor, or the 24V 30A relay is
damaged.
4. Auxiliary power modules, diodes BYV26E, K3878 (K2225) is damaged.
5. May be filter capacitor and silicon rectifier bridge damaged, result in unable to
boot.
1. Check whether digital display is damaged, if there is a loose, break cables.
2. Control circuit problem, please contact the distributor or the company.
1. Check whether the fan is damaged.
2. Check whether the fan power supply socket is voltage output.
1. Check whether the 1k potentiometer is damaged, or there is a loose connection
wire.
2. May be a feedback circuit malfunction. Please contact the distributor or the
company.
1. Output connection circuit disconnection or Poor contact.
2. Test whether the drain voltage of the four drive field tube is about 14v.
3. Control circuit problem, please contact the distributor or the company.
Remedy
10