R-Tech PLASMA P31C Operation Instructions Manual page 17

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 cutting
Check condition of torch consumables and replace if worn
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
HF PCB Failure – Contact R-Tech for repair
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 cut – 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 fast or to not enough
cutting power for job.
17
FAULT DIAGNOSTICS