Hobart Welding Products AIRFORCE OM-230 455D - Manual (Page 26)

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A complete Parts List is available at www.HobartWelders.com
OM-230 455 Page 22
6-3. Checking/Replacing Retaining Cup, Tip, And Electrode
A good practice is to replace both the tip and electrode at the same time.
Ref. 804 851-A
Turn Off power source.
1 Shield Cup
Remove shield cup. Check cup for cracks,
and replace if necessary.
2 O-Ring
Check O-ring for cracks or worn spots and
replace, if necessary.
3 Tip
4 Opening
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
Remove swirl ring. Check ring, and replace
if side holes are plugged.
Carefully reassemble parts in reverse order.
7 Stand-off Guide
Placing the stand-off guide on the end of
the torch provides an optional method of
maintaining a 1/16 in (1.6 mm) gap
between tip and workpiece.
Make sure this area is clean of
any debris.
Make sure swirl ring is clean of any
debris and no holes are
obstructed.
New
Worn
New
Worn
*1/32 in (1 mm) — 1/16 in (2 mm)
maximum pit depth depending on
acceptable cut quality.
4
3
6
1
5
*Pit
Depth
Replace tip if opening is
deformed or 50% oversized.
2
.
Lightly tighten electrode
using electrode wrench
(15-20 in lb (1.7-2.3 N
V m).
Electrode
Wrench
7
Y Turn Off power source before checking torch parts.
Y Overtightening will strip threads. Do not overtighten retaining cup during
assembly. Do not cross-thread parts causing stripping. Use care during torch
assembly and parts replacement.
Y 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.