17
Fault Diagnostics
1.
Power light not lit
Check machine on/off switch is in the on position, Check Input power to machine, Check plug wiring, Check
mains trip / fuses.
2.
No output - Fan runs - Power light is lit
Check torch connections are secure and torch switch operation, try replacing plasma cutting torch
3.
No output - Power light is lit - Warning light is lit
Welding application may have exceeded recommended duty cycle, allow machine to cool down until the
warning light goes out.
4.
No output
–
Power light is lit
–
Air at torch tip
–
No Pilot Arc
Check condition of torch consumables and replace if worn
Check pilot arc protecting fuse on front panel of machine and replace if blow –
If fuse keeps blowing contact
R-Tech for repair / replacement torch
Please ensure machine is switched off before checking fuses
Check for water in water trap at rear of machine, if water is present, drain air compressor, clean water out of air
lines, empty water trap by pressing water release button on bottom of air regulator water trap. Fit new
consumables as per instructions earlier in this manual
5.
Machine keeps overheating - Warning light is lit on machine
Check if fan is running if not contact R-Tech for repair
Check the cooling vents for obstruction; blow out machine with clean dry low pressure air supply.
Check for adequate ventilation around machine
6.
Erratic cutting - Torch spitting when cutting
Check torch consumables and replace if necessary as per instructions earlier in this manual
Check if correct amperage for thickness of metal, if travel speed is too slow or too much cutting power, increase
speed of cut or reduce cutting amperage. (When machine senses no metal left to cut it will switch of main
cutting power and switch on pilot arc, this is the pilot arc restart)
Water contamination in torch head, check for water in water trap at rear of machine, if water is present, drain air
compressor, clean water out of air lines and empty water trap by pressing water release button on bottom of air
regulator water trap. Fit new torch consumables as per instructions earlier in this manual
