Tweco 300 XT Auto-Cut 380V - Manual (Page 41)

AUTO-CUT 300 XT
Manual 0-5261 INSTALLATION 3-17
5. Slide the positioning tube down to the torch head. Hold the torch head stationary. Rotate the positioning
tube onto the torch head. Pull the leads back as needed to ensure a proper fit through the Mounting Tube.
Do not let the torch leads twist.
CAUTION
Ensure that the leads do not twist within the mounting tube. Leads must lie as shown in the installation sketch.
6. The lower end of the Mounting Tube includes four threaded holes. Install an Allen set screw from the hard-
ware kit in any of the threaded holes to secure the Torch Head Assembly to the Mounting Tube.
7. Fasten the positioning tube into the mounting block. Slide the leads end cap down onto the torch position-
ing tube. Ensure that the end cap engages the O-ring at the top of the positioning tube.
8. Install the shield cup, and cartridge assembly (including consumables) onto the torch head.
3.15 Install Consumable Torch Parts
1. Refer to the Torch Speed Charts to select the correct parts for the application. The application will determine
which torch parts must be used. Refer to the speed charts for the proper torch parts to install for a selected
application.
CAUTION
Do not interchange parts. Make sure both the tip and electrode in the torch correspond with the plasma and shield
gas in use for the application.
2. Install the consumable parts as follows to ensure proper operation. These steps will help ensure that parts
are seated correctly.
Shield
Retainer
Shield Cap
Shield Gas
Distr
ibutor
Tip Plasma Gas
Distr
ibutor
Electrode
Cartridge
Art # A-11915
Assemble First
3. Stack the consumable parts together.
4. Insert the stack of consumable parts into the cartridge. Ensure that the large O-ring on the torch tip fits
completely into the cartridge. If any part of the O-ring protrudes from the cartridge, the parts are not seated
properly.