Tweco XTTM-300 - Manual (Page 18)

INSTALLATION 3-6 Manual 0-2912
3.04 Connecting Torch
WARNINGS
Disconnect primary power at the source before disassembling the torch
or torch leads.
Use caution when removing the Pilot Return Lead from the existing Torch
as damage to the connection can result.
The Torch Head is a direct replacement for the Hypertherm Torch Head on the HD3070 System. Connect the Torch
Leads as follows:
1. Remove and set aside any consumables installed in the original torch. Release the torch positioning tube
from its support. Do not rotate the torch head or leads. Support the Torch Head and positioning tube manu-
ally.
2. Rotate the positioning tube to disconnect the Hypertherm Torch Head from the tube. Slide the tube back on
the leads to expose the torch leads connections to the torch head.
3. Disconnect the torch head from the leads. Set the torch head aside.
4. 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.
Plasma Gas
(Left Hand Thread)
Shield Gas
Coolant Supply
&
Power Lead (-)
Coolant Return
Pilot Lead (+)
Heat Shrink
Art # A-04518
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 seal-
ant 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.