During A Weld; Stop A Weld; Between Welds - Demtech Pro-X5 600-0105/X5/A Operator's Manual

Rev. A: January 2015

7.3. During a Weld

Keep the welding rod being fed into the welder clean and dry. Foreign material such as dust,
dirt, sand and water droplets introduced into the feed port can cause premature wear to the
welder. For long welds, the Pro-X5 drill motor has a locking pin which allows you to lock the
drill motor trigger switch in the "ON" position.
Additional adjustments to the Pre-Heat and Plastic Heat temperatures may be required.

7.4. Stop a weld

To stop welding, either release the drill motor trigger or, if the trigger is locked "ON", pull and
release the trigger to stop. If there is going to be a short pause before the next weld, clear the
excess molten plastic from the tip of the welder shoe to prevent it from cooling and
inadvertently blocking the welder output (refer to Section 7.5). If there is going to be a long
pause before the next weld, it is recommended that the molten plastic inside the barrel be
purged before commencing the next weld (refer to Section 7.5).

7.5. Between welds

After the drill motor is stopped and if there is going to be a short pause before the next weld,
clear the excess molten plastic from the tip of the welder shoe to prevent it from cooling and
inadvertently blocking the welder output. Take caution as the plastic is hot. Use a pair of
pliers with insulated handles to perform this procedure. Grab the tip of extrudate protruding
from the welding shoe and pull. This will remove a small plug of semi-cooled extrudate with
a bit of molten plastic at the end.
With the Plastic Heat enabled, the plastic inside the barrel will continue to melt. If the welder
sits idle between welds for 30 seconds or more, this causes the plastic in the barrel to become
"overheated". Before beginning the next weld it is important to purge this overheated plastic
from the barrel. This should be done off to the side of the work area by activating the drill
motor for a sufficient period of time to push out any "old" plastic and refilling the barrel with
"new" plastic. This procedure assures good and consistent welds throughout the work shift.
Page 14 Pro-X5 Operator's Manual 600-Manual_Pro-X5 RA.docx