4-4. Checking/Replacing Retaining Cup, Tip, And Electrode
Overtightening will strip threads. Do not overtighten retaining cup during assembly. Do not
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.
Turn Off power source before checking torch parts.
Make sure this area is clean of any debris.
Make sure swirl ring is clean of any debris and no holes are obstructed.
4
3
New
8
6 |
|
7 | 5 |
|
| New |
| *Pit |
1 | Depth |
2 |
|
Worn
Turn Off power source.
1Shield Cup
2
Remove shield cup. Check cup for cracks, and replace if necessary.
Check
3Tip
4Opening
Remove tip. Check tip, and replace if open- 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
Worn
*1/32 in (1 mm) — 1/16 in (2 mm) maximum pit depth depending on acceptable cut quality.
802 465
7
Remove swirl ring. Check ring, and replace if side holes are plugged.
Check
8
Check
Carefully reassemble parts in reverse order.