Tweco 300 Auto-Cut - Manuel (Page 118)

Manual 0-4817 Auto-Cut 300 A-22 APPENDIX
6. Install the Mounting Tube as follows:
a. Position the Mounting Tube at the end of the leads assemblies as shown.
b. Slide the Mounting Tube upward onto the leads assemblies.
c. Press the upper end of the Mounting Tube into the lower end of the Torch Leads End Cap. Ensure that the
O-Ring on the Tube engages the mating groove inside the Torch Leads End Cap.
d. Ensure that the Mounting Tube is free to rotate within the Torch Leads End Cap.
7. Connect the gas and coolant leads to the Torch Head.
a. Coolant supply and return connections to the Torch Head are of different lengths.
b. Plasma and secondary gas connections to the Torch Head are threaded differently; the plasma gas con-
nection is left-hand thread, the shield gas connection is right-hand thread.
c. Hold the Torch Head leads connectors stationary; turn the leads fittings with a wrench to secure the leads
to the Torch Head. Do not overtighten.
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.
8. 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.
9. 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
10.. 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.
11.. Install the appropriate consumable parts. The torch manual (section 8 of the operating manual) includes
diagrams showing the correct parts to install, depending on the metal to be cut and the gases in use.
This completes the installation of the Remote Arc Starter for AutoCut 300.
NOTE
Every effort has been made to provide complete and accurate information in this manual. However, the
publisher does not assume and hereby disclaims any liability to any party for any loss or damage caused
by errors or omissions in this Manual, whether such errors result from negligence, accident, or any other
cause.