Miller Electric MC-80M owner manual Checking/Replacing Cup, Tip, And Electrode

5-2. Checking/Replacing Cup, Tip, And Electrode

CAUTION

OVERTIGHTENING will strip threads.		T IP AND EL ECT RO DE WEAR BEYO ND
•	Do not overtighten electrode, tip, and cup during assembly.	RECO MMENDED VAL UES or OPERAT IO N
•	Do not cross-thread parts causing stripping.	WITHOUT TIP OR ELECTRODE can damage
• Use care during torch assembly and parts replacement.		torch.
		• Inspect cup, tip, and electrode 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.

Do not overtighten electrode.

4

2

Turn Off cutter, and disconnect in- put power.

1 Shield Cup

Remove shield cup. Check shield cup for cracks, and replace if need- ed. Also, replace cup if it does not cover the tip.

2Tip

3Opening

Remove tip. Check tip, and replace if opening is deformed or 50% over- size. If inside of tip is not clean and bright, clean with steel wool. Be sure to remove any pieces of steel wool afterwards.

4 Electrode

Check electrode. If center has a pit more than a 1/16 in (2 mm) deep, re- move and replace electrode using supplied wrench. Do not overtighten.

5 Standoff Guide

Carefully reassemble parts in re- verse order.

	4	Thread Size for Electrode:
3		5/16 - 24
1	New
	1/16 in
2	(2 mm)
	Pit
5

New

Worn

Tools Needed:

Worn

(Supplied 171 875)

Ref. ST-800 897 / ST-800 973

Figure 5-2. Checking/Replacing Cup, Tip, And Electrode

OM-1592 Page 9