ARC-E 400
14
Repair & Maintenance
WARNING: Have a qualified electrician do the maintenance and trouble shooting work. Turn the input
power off, using the disconnect switch at the fuse box before working inside the machine.
1.
Cautions
Rivet equipment name tag on the specified area of the case, otherwise the inside parts will possibly
be damaged.
Connect welding cable to terminals firmly, otherwise the terminals will be burn out which will
cause the instability of welding process.
Avoid welding cable and control cable being broken, and prevent welding machine from being short
circuit.
Never let welding machine be bumped into or stacked up by heavy objects.
Ensure good ventilation
Under high temperature, if work with large current for long period, welder may shut down
automatically due to thermal protection acts. At this point, let the machine runs under open-load for
a few minutes, and it will be automatically recover.
Under high temperature, if work with large current for long period, welder may shut down
automatically due to air switcher trips. Cut off the power supply to the electricity switchboard on
frame, and wait for 5 minutes to turn on the circuit breaker on the power source fist then connect
the power supply to the electricity switchboard on frame. And leave the machine runs under
open-load condition for a while.
After welding, cut off power supply.
2.
General maintenance
Remove dust from power resource with pressure air by qualified individuals every 3-6 months.
Check if the jointers are loose.
Check regularly if cables are worn out, knobs are loose, and components of panel are damaged.
Check regularly if cables are tightly connected to cable connecting terminals in case of terminals
being burnt out.
3. Procedure for regular checking prior to maintenance
Check if all front panel switches are on the proper positions.
