Powermax 45 Consumables FAQs
Straight answers on choosing, fitting and looking after the torch consumables for a 45 amp class plasma cutter.
Can I fit lower-current consumables in a plasma torch?
Some torches are designed to accept the consumables of a smaller model in the same family, and parts rated for a lower current are often used when cutting thin metal at lower settings. That only works where the maker says the parts are compatible, so check the manual or consumable chart before mixing.
Parts rated below the current you are actually cutting at will burn out quickly, and the reverse is also poor practice. Set the machine to a current that suits the consumables you have fitted, and use one matching set rather than odd parts from different current ratings.
What are extended-reach consumables and when are they worth using?
Extended-reach consumables are longer than standard parts and have a narrow tip. They let you get into corners, channels, close edges and flanges, and give a clearer view of the line you are cutting or gouging. They can save a grinding or gas-cutting step on awkward jobs.
The trade-off is heat: longer, slimmer parts cool less well, especially on an air-cooled torch, so they are best kept for jobs that need the access. They are made for particular torch designs, so check that the part is listed for your torch and current before ordering.
Why will my torch not fire after I change the consumables?
Many torches have a parts-in-place switch that stops the arc starting unless the retaining cap is fitted and seated. If you have just changed parts, check that the parts underneath are seated and in the right order, that the cap is on firmly by hand but not overtightened (a cap screwed on too tightly can also stop the torch firing), and that dirt or debris is not stopping the cap sitting down.
If it still will not fire, check the manual for the fault indication on your machine. Never bypass or jumper the interlock, because it exists to stop the torch firing with the parts removed.
How tight should the retaining cap be?
Fit the cap by hand until it is snug and seated, and do not use a tool or force it. Overtightening can damage the consumables or stop them working properly, and it can strain the threads and the parts inside the torch head. Cross-threading is the other common mistake, so start the thread gently and make sure it turns freely before it firms up.
If the cap will not seat without force, take it off and check that every part is fitted correctly and that the threads are clean. Your manual describes the correct fitting for your torch.