Hypertherm HRT - Manual (Page 20)

Torch seTup
2-2 Duramax Retrofit Torch
Operator Manual
Introduction
Duramax™ series handheld and machine retrofit torches are available for the Powermax1000,
Powermax1250, and Powermax1650 systems. The ETR (Easy Torch Removal)™ quick‑disconnect
system makes it easy to remove the torch for transport or to switch from one torch to the other if
your applications require the use of different torches. The torches are cooled by ambient air and do
not require special cooling procedures.
This section explains how to setup your torch and choose the appropriate consumables for the job.
Consumable life
How often you need to change the consumables on your retrofit torch will depend on a number of
factors:
• Thickness of the material – the thicker the material being cut, the more often consumables
need to be changed.
• Average length of cut – the longer the average cut, the more often consumables need to
be changed.
• Type of cutting – handheld cutting will require more consumable changes than machine
cutting.
• Air quality – the presence of oil, moisture, or other contaminants will reduce consumable
life.
• Piercing / edge starting – piercing the metal causes more consumable wear then starting
cuts from the edge of the metal.
• Proper torch‑to‑work distance – when gouging or cutting with unshielded consumables,
maintaining proper torch‑to‑work distance will result in better consumable life.
• Proper pierce height – maintaining proper pierce height will result in better consumable
life.
• Cutting in “continuous pilot arc” mode or normal cutting mode – cutting with a continuous
pilot arc causes more consumable wear than cutting in normal cutting mode.
You will find more information about proper cutting techniques in Section 3, Operation.