Tweco 6000 CE Merlin - Manual (Page 30)

INSTALLATION PROCEDURES 3-12 Manual 0-2601
OUTPUT OUTPUT TO CONTROL
MODULE MODULE
AIR PLASMA INPUT
N 2 PLASMA INPUT
O 2 PLASMA INPUT
PLASMA GAS PLASMA GAS
Ar/H 2 PLASMA INPUT
OTHER Secondary
Gas Supply
N2 Secondary
Gas Supply
A-01342
Figure 3-18 Secondary Gas Connections
3.11 Connecting Torch Supply
Leads
The Torch Supply Leads interfaces the Master Power Sup-
ply to the Arc Starter Box. The Torch Supply Leads is
made up of individual hoses and cables that must be con-
nected.
NOTE
Refer to the Arc Starter Box Instruction Manual
0-2572 for details on installation of the Arc Starter
Box.
The Torch Supply Leads components connects directly
to a bulkhead inside the Master Power Supply and to con-
nections inside the right side panel. Connect the Torch
Supply Leads components as follows:
WARNING
Primary power should NOT BE APPLIED when
working inside the power supply.
1. Open the front panel access panel to gain access to
the bulkhead.
2. Feed the four hose assemblies on the Torch Supply Leads
components through the boot on the front panel of the
Master Power Supply.
3. Connect the four hose assemblies onto the mating connec-
tions at the internal bulkhead of the Master Power Supply
per the following figure.
Secondary
Gas Lead
Torch Supply Leads
Supply Leads Boot
Coolant Return
Lead
Coolant Supply
Lead
Plasma
Gas Lead
A-01447
Control Cable
Master Power Supply
Bulkhead
Figure 3-19 Leads Extension Hose Connections To
Master Power Supply
4. Connect the end of the Pilot Lead, two wires, to the Master
Power Supply as follows:
a. Remove the right side panel from the Master Power
Supply.
b. Feed the Pilot Lead, two wires, through the small strain
relief at the front panel of the Master Power Supply.
c. Remove the nut and star washer on the ground termi-
nal of the pilot connection inside the power supply.
Small Strain
Relief
Black Wire
of Pilot Lead
Ground Terminal
Nut
Star Washer
Pilot Terminal
Red Wire
of Pilot Lead
A-01495
Figure 3-20 Pilot Lead Connection at Power Supply