R-Tech MMA 160S Operation Instructions Manual - Maintenance
12
Welding in STICK MMA (SMAW) Mode
1. Fit MMA electrode holder to machine
2. Fit earth lead to machine and to work piece
3. Select MMA on MMA/TIG switch
4. Place electrode in holder
5. Select desired welding base current
6. Strike arc and weld
Notes: When machine is switched on, output terminals are always live, take care and do not touch
electrode and earth by person at same time, otherwise electric shock will occur.
Maintenance
Routine and periodic maintenance
WARNING!
ELECTRIC SHOCK CAN KILL
Turn the input power OFF at the mains switch & fuse box before working on this equipment.
Have a qualified electrician install & service this equipment.
Allow machine to sit for 5 minutes minimum to allow the power capacitors to discharge before
working inside this equipment.
Do not touch electrically live parts
1. Periodically remove the side/top panels of machine and clean out machine with a low
pressure dry air line paying particular attention to PC Boards, Fan blades, HF points
2. Inspect input and output cables & hoses for fraying, cuts & bare spots
3. Keep tig torch and cables in good condition
4. Clean air vents to ensure proper air flow and cooling
5. The fan motor has sealed bearings which requires no maintenance