Tweco 20 O2 Auto-Cut - Manuel (Page 120)

Manual 0-4816 Auto-Cut 200
2
7-6 TORCH MAINTENANCE
2. Remove the Cartridge tool from the Cartridge and install the assembled Cartridge onto the Torch Head.
The cartridge assembly must cover the O-Ring on the torch head.
Do not force the cartridge if it will not tighten fully. Remove the cartridge assembly and gently clean the threads on
the torch head with a wire brush. Apply oxygen-compatible lubricant (supplied with the torch) to the threads.
Torch Head O-Ring
Torch Head
Art # A-07202
0.063 - 0.083"
(1.6 - 2.1 mm)
Protrusion
Installing Assembled Cartridge Onto Torch Head
3. Slide the ohmic clip over the shield cup if using ohmic torch height control sensing.
A-03393
Ohmic Clip
4. Connect the wire lead from the height finder to the ohmic clip.
Ohmic height sensing is not recommended with water shield. Water on the plate interferes electrically with the
ohmic sensing circuitry.