Chicago Electric 90 AMP FLUX WIRE WELDER 68887 - Manual (Page 22)

Page 22 For technical questions, please call 1-800-444-3353. Item 68887
Maintenance
TO PREVENT SERIOUS INJURY,
FIRE AND BURNS:
Unplug the Welder,
rest the Gun on a heat-proof,
electrically non-conductive surface,
and allow all parts of the Welder to cool thoroughly
before service.
1. Periodically remove the Right and Left
side panels, and using compressed air,
blow out all dust from the interior.
2. Store in a clean and dry location.
Gun
concrete slab
(or other heat-proof,
non-conductive
surface)
+
3. For optimal weld quality, clean and
inspect the Contact Tip and Nozzle
before each use. See below.
Nozzle Inspection, Cleaning, and Replacement
1. Make sure that the entire Gun is completely
cool and that the Power Cord is unplugged
from the electrical outlet before proceeding.
2. Turn the Nozzle counterclockwise
while pulling to remove.
3. Scrub the interior of the Nozzle
clean with a wire brush.
4. Examine the end of the Nozzle. The end should be
flat and even. If the end is uneven, chipped, melted,
cracked, or otherwise damaged, the Nozzle will
adversely affect the weld and should be replaced.
5. Reinstall the Nozzle after inspecting
and cleaning the Contact Tip.
Gun
Nozzle
Contact
Tip
Contact Tip Inspection, Cleaning and Replacement
1. Make sure that the entire Gun is completely
cool and that the Power Cord is unplugged
from the electrical outlet before proceeding.
2. Remove the Nozzle as explained in the
previous subheading. Turn the Contact Tip
counterclockwise and slide it off the welding wire.
3. Scrub the exterior of the Tip clean with a wire brush.
Clean out the inside of the Tip with a tip cleaner
(sold separately). Check that the Tip is the proper
type for the wire size used. The included 0.030"
Tip is for 0.030" wire. Install a 0.035" Tip for
use with 0.035" wire (both sold separately).
4. Examine the shape of the hole at the end of
the Contact Tip. It should be an even circle;
it should not be oblong or have any bulges in it.
5. If any problems are noted, Contact Tip
replacement would be advisable. Make
sure to select a new Tip that is the correct
size for the welding wire used (0.030" Tip for
0.030" wire – 0.035" Tip for 0.035" wire).
6. Reinstall the Tip and securely
reinstall the Nozzle as well.
Gun
Nozzle
Contact
Tip
SAFETY
MAINTENANCE
BASIC WELDING
WELDING TIPS
SETUP