Tweco 300 XT Ultra-Cut Plasma Cutting System - Manual (Page 58)

ULTRA-CUT 300 XT
3-34 INSTALLATION Manual 0-5274
CAUTION
The gas and coolant leads include compression fittings. Do not use sealant on these connections.
Slowly apply pressure to the gas lines. Check for leaks at all connections before continuing. If there are
no leaks, shut off the gas supplies and continue with installation.
7. Connect the pilot lead to the Torch Head. Press the two ends of the connector firmly together. Thread the
plastic lead cover/connector onto the mating Torch Head connector.
8. Press the Torch Head Assembly upward to connect to the Mounting Tube. Pull the leads back as needed to
ensure a proper fit through the Mounting Tube and Torch Leads End Cap. Hold the Torch Head Assembly
stationary; rotate the Mounting Tube to thread it onto the Torch Head.
CAUTION
Ensure that the leads do not twist within the mounting tube. Leads must lie as shown in the installation
sketch.
9. The lower end of the Mounting Tube includes four threaded holes. Install an Allen set screw in any of the
threaded holes to secure the Torch Head Assembly to the Mounting Tube.
10. Install the appropriate consumable parts as shown on the following pages. The torch manual includes
diagrams showing the correct parts to install, depending on the metal to be cut and the gases in use.
3.21 Install Consumable Torch Parts
Install the consumable parts as follows to ensure proper operation. These steps will help ensure that parts are
seated correctly.
Art # A-03887
WARNINGS
Do not install consumables into the Cartridge
while the Cartridge is attached to the Torch Head.
Keep foreign materials out of the consumables and Cartridge.
Handle all parts carefully to avoid damage,
which may affect torch performance.
1. Check the appropriate cut chart for the right combination of parts for the cutting application.
2. For 200 Amp parts only, thread the Shield Retainer onto the Shield Cup.
3. Stack the consumable parts together.
Shield
Retainer
Shield Cup
Shield Cap Shield Gas
Distributor
Tip Plasma Gas
Distributor Electrode
Cartridge
Art # A-08303
A B C
1 - Assemble “A” 200 A only. 2 - Assemble “B”. 3 - Assemble “B” to “C”. 4 - Assemble “A” to “B-C” assembly.