R-Tech MMA 160S, Operation Instructions Manual

Page: 13 / 17

13
Troubleshooting
Service & repair should only be performed by R-Tech welding trained personnel. Unauthorised
repairs performed on this welding equipment may result in danger or injury to the technician and
machine operator and will invalidate your warranty.
For your safety and to avoid electric shock, please observe all safety notes and precautions
detailed throughout this manual
The troubleshooting guide is provided to help you locate possible machine malfunctions
If fault / problem is not listed below check our Arc Welder Support page on our website
www.r-techwelding.co.uk/support.php
or contact R-Tech by phone. Contact details can be found on front of this manual and our website
Welding problems
•
No output - Power light is not lit
Check machine on/off switch is in the ‘on’ position
Check Input power to machine
Check plug wiring
Check mains trip / fuses
•
No output - Fan runs - Power light is lit
Check power cable connections and condition of earth clamp assy.
•
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.
•
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
•
Poor weld penetration
Check condition of earth lead and clamp and ensure clamp is connection via a clean area
on work piece