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T22M is a 2-wheel cart with a floor-level gas bottle rack. The maximum recommended size of the gas bottle is 20 litres.
Practical answers on choosing, fitting and looking after replacement parts for a compact stick welding machine.
Start with the rating plate on the machine. It identifies the maker, the type and the electrical ratings, and if the handbook has gone missing it is often the only specification you have. Note the type and serial details exactly as printed.Then use the parts list in the manual, which matches each part to the machine type. A part that looks the same can differ in fit or rating between versions of a range, so do not rely on appearance alone. Photograph the old part and its position before removing it, and read any markings on it. If the type or version is unclear, ask a welding-equipment supplier or the maker's service agent to confirm before you buy.
Only if you are competent to do electrical work. The law expects anyone doing work where technical knowledge is needed to prevent danger to have that knowledge or to be properly supervised, and a welder's mains cable carries the full input current. Makers generally say a mains cable should be replaced by a qualified electrician or an authorised service agent.When buying a replacement, match the cable to the data plate and manual: cable type, conductor size, plug and fuse must suit the machine's input rating. Never swap in a lighter household lead, and never keep using a damaged cable. After the work, the machine should be inspected and tested before it goes back into use.
The output sockets carry the full welding current into the leads, so a poor connection heats up. Welding guidance says external connections should be clean and tight, checked regularly and after every reconnection, and that connectors should be insulated and suited to the current they carry.Signs of trouble include a plug that wobbles or will not stay locked in, discoloured or melted insulation around the socket, pitting or burn marks on the metal, a socket that is hot after short use, and an unstable arc. Do not carry on welding with a hot or loose socket. Replacing one means opening the machine, so it is a job for a competent person. Match the connector type to the leads you use.
Start with a visual check: covers fitted, cable clamped, no loose screws or stray wire. Some faults, such as a poor earth connection or weak insulation, cannot be seen, so after repairs involving electrical parts the machine should be inspected and tested by a competent person using suitable test equipment. A standard exists for inspection and testing of welding power sources after repair.Keep a note of what was changed and when. Then make a trial weld on scrap at a modest setting, watching for unusual smells, noise, heat at the sockets or an unstable arc. Stop and unplug the machine if anything seems wrong.
