Tweco Victor Torch Handles,Cutting Attachments - Manual (Page 14)

4-10
sectIoN 4:
cUttING AttAchMeNt
4.01 cUttING pRepARAtIoN
1. Inspect the cone end, coupling nut, and torch head for oil, grease, or
damaged parts. Also inspect the cone end for missing or damaged
O-rings.
warning
If you find oil, grease, or damage, DO NOT use the apparatus until
it has been cleaned or repaired by a qualified repair technician.
The two O-rings on the cone end must be in place and in good
condition. The absence of either of these O-rings allows pre-mixing
of oxygen and fuel gases. This can lead to a sustained backfire
within the torch handle and cutting attachment.
2. Inspect the cutting tip and cutting attachment head. All tapered
seating surfaces must be in good condition. Discard damaged
cutting tips. If you find dents, burns, or burned seats, resurface
the torch head. If you use the cutting attachment with poor seating
surfaces, a backfire or sustained backfire may occur.
warning
If the tapered seats on the cutting tip are damaged, Do not use
the tip. Poor seating surfaces may cause a backfire or sustained
backfire.
3. Inspect the preheat and cutting oxygen holes on the tip. Slag can
stick on or in these holes. If the holes are clogged or obstructed,
clean them out with the proper size tip cleaner.
4. Insert the tip into the cutting attachment head. Tighten the tip nut
securely with a wrench (15 - 20 lbs. torque).
5. Connect the cutting attachment to the torch handle and tighten
the coupling nut until it is hand tight. Do Not use a wrench, as
damage to the O-rings may occur creating a faulty seal.
6. Refer to the Tip Flow Data Charts for correct cutting tip, regulator
pressures, and travel speed.