Maintenance - Lincoln Electric Torchmate 4400 User Manual

As with all machinery, there is required maintenance. This will cover Daily, Monthly, and ' A s Needed' tasks to keep
your 4400/4800 running like new.
Daily Maintenance:
Plasma Power Supply:
The plasma power supply and torch body will need to be evaluated between material thicknesses or prior to cutting.
Remove and check if the consumables need to be changed. Apply the following to know when the consumables
need to be changed:
For reference and complete maintenance on the FlexCut plasma power supplies, see your Owners Manual. For a
replacement manual, please call Torchmate technical support.
The nozzle
changed is an excessive amount of both dross and bevel angle appearing in your cuts.
On the nozzle itself, you'll find that a larger orifice or an irregularly shaped hole will be
the telltale signs of excessive wear.
The electrode:
larger the crater within the electrode tip, the more wear that the electrode has
gone through. Replace the electrode if the center pit depth is greater than .06" (1.5
MM). Also, notice darker swirl marks near the tip of the electrode. Although these
swirl marks don't have a correlation with the life of the electrode, they do indicate
contaminants within the air supply, such as excessive moisture or oil.
The shield cap:
are then replace the shield. These holes are the outlet for the shield gas, and when
clogged, they can misshape the plasma arc which leads to imprecise cuts.
The swirl ring
The retaining cap
replaced when corrosion, clogging, or cracking is physically apparent.
Please Note:
• When not in use, we recommend removing the consumables from the torch until next time the machine is in
use to help prevent corrosion building in the pins.
User Guide

Maintenance

is the most frequently replaced consumable. A sign the nozzle needs to be
pay close attention to the amount of Hafnium left in the tip. The
hold it up to a light and check if any of the holes are plugged. If they
will need to be checked intermittently for clogs or cracks.
is the most durable of the consumables, and will only need to be
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