Eastwood MP200i Instructions Manual page 21

TORCH ASSEMBLY/DISASSEMBLY
Disassembly:
• Make sure the welder is turned OFF and unplugged.
• Remove the Back Cap from the Torch.
• If there is a Tungsten installed in the Torch pull it out of the front of
the Torch.
• Slide the Collet out of the Torch.
• Unscrew and remove the Gas Shielding Nozzle.
• Unscrew and remove the Collet body.
Assembly: (Fig 18)
• Select a Collet body that matches your Tungsten diameter size and
thread it into the front of the Torch.
• Select a Collet that matches your Tungsten diameter size. Insert
the Tungsten into the Collet and put the Collet and Tungsten back
into the Torch.
• The Gas Shielding Nozzle size should be changed according to
shielding gas requirements for the material being welded. Thicker
material requires a larger Nozzle. Select the correct Gas Shielding
Nozzle and thread it onto the Collet body.
• Install the back cap to lock the Tungsten in place. Always make
sure the Tungsten protrudes 1/8" to 1/4" beyond the Gas Shielding
Nozzle (FIG 19).
SHARPENING THE TUNGSTEN
To avoid contamination of the Tungsten and ultimately the weld, it is
imperative to have a dedicated grinding wheel used for Tungsten grinding
only. A fine grit standard 6" synthetic stone grinding wheel on a bench
top grinder is sufficient or our specifically designed Eastwood # 21525
Tungsten Grinders are available.
• Shut off the welder.
• Make sure the Tungsten and Torch are sufficiently cooled for
handling then loosen and remove the Back Cap then the Collet and
remove the Tungsten from the FRONT of the Torch only. (Removing
from the rear will damage the Collet).
• If the Tungsten is used and the end is contaminated, use pliers or a
suitable tool to grip the Tungsten above the contaminated section
and snap off the end of the Tungsten.
• Holding the Tungsten tangent to the surface of the grinding wheel,
rotate the Tungsten while exerting light pressure until a suitable
point is formed. The ideal tip will have the length of the conical
portion of the sharpened area at 2-1/2 times the Tungsten rod
diameter (FIG 20).
• Replace the Tungsten in the Collet with the tip extending 1/8"-1/4"
beyond the Gas Shielding Nozzle, then re-tighten the Back Cap
(FIG 21).
To order parts and supplies: 800.343.9353 >> eastwood.com
FIG. 18
FIG. 19
FIG. 20
FIG. 21
21