Checking/Replacing Retaining Cup, Tip, And Electrode - Miller Electric Spectrum 3080 Owner's Manual

5-4. Checking/Replacing Retaining Cup, Tip, And Electrode

Inspect shield cup, tip, and electrode for wear before cutting or whenever cutting speed has been significantly
reduced. Do not operate torch without a tip or electrode in place. Be sure to use genuine replacement parts.
A good practice is to replace both the tip and electrode at the same time.
Make sure this area is clean of
any debris.
Turn Off power source.
1 Drag Shield
2 Retaining Cup
Remove retaining cup. Check retaining cup
for cracks, and replace if necessary.
3 Tip
4 Opening
Remove tip. Check tip, and replace if open-
Overtightening will strip threads. Do not overtighten electrode, tip, and retaining
cup during assembly. Do not cross-thread parts causing stripping. Use care dur-
ing torch assembly and parts replacement.
Turn Off power source before checking torch parts.
8
7
New
6
Worn
3
2
1
ing is deformed or 50% oversize. If inside of
tip is not clean and bright, clean with steel
wool. Be sure to remove any pieces of steel
wool afterwards.
5 Electrode
Check electrode. If center has a pit more
than a 1/16 in (2 mm) deep, remove and re-
place electrode.
6 Swirl Ring
5
1/16 in
(2 mm)
Pit
4
New
Worn
Remove swirl ring. Check ring, and replace
if side holes are plugged.
7 O-Ring
Check O-rings on torch. If needed, coat with
thin film of silicone lubricant (part no.
169 231). Replace if damaged.
8 Plunger Area
Check this area for any debris or foreign ma-
terial. Clean out if necessary.
Carefully reassemble parts in reverse order.
Ref. 801 396-A / 801 405
OM-2225 Page 19