HTP MIG 2400, Руководство пользователя

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Maintance and Service
Introduction
90% of the problems with MIG welders are wire feed/welding
gun related. 98% of these problems are due to owner/operator
abuse, misuse or ignorance.
The welding gun is exposed to the heat and spatter of welding.
The NOZZLE SPRAY (Part #12021) should be sprayed on the
inside of the gas nozzle, contact tip and swan neck with every
use. The function of the nozzle spray is to prevent the spatter
from adhering to the gas nozzle, contact tip and swan neck,
making it easy to keep these parts clean. However, using the
spatter spray does not eliminate the need to frequently clean
the spatter from the gas nozzle. For this reason, HTP has
available a NOZZLE REAMER (Part #12025). The nozzle
reamer makes it very easy to keep your tips and nozzles clean.
Figure 9 shows the early symptoms of spatter build up. The
exterior of the nozzle has arc marks on it from shorting
out. You will also notice the nozzle sticking to the work and
inconsistent weld quality when the nozzle shorts out.
Figure 10 shows a cutaway of a nozzle with spatter build up.
This nozzle is ruined because the operator allowed the spatter
to build up excessively, so the spatter has now welded itself to
the inside of the gas nozzle.
Figures 11 and 12 show what will happen to the swan neck
if you do not keep your nozzle clean. Both figures illustrate
that in extreme cases, shorting out the nozzle will burn holes
completely through the swan neck requiring its replacement.
Figure 16 shows the effect of a wire drive mechanism that
has been set just a little bit too tight. As you can see, the
wire has been spiraled into the liner, resulting in the curvy
wire. When the wire got to the contact tip, it could not pass
through the contact tip smoothly, hence burning back to the
tip. Since the wire could not pass through the tip, this same
situation (spiraling wire) has now occurred at the other end of
the welding gun. When it passes 10 feet through the welding
gun, the wire will not be able to pass through the tip smoothly.
If resetting the tension on the drive roller does not remedy this
problem, then the liner should be replaced.
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Nozzle Reamer
Figure 12
Spatter Damaged Swan Neck
Figure 9
Spatter Build Up Symptoms Figure 10
Spatter Build Up
Figure 11
Spatter Damaged Swan Neck
Figure 16