Tweco 1000 Merlin(Dec2004) - Manual (Page 36)

INSTALLATION 3-18 Manual 0-2708
C. Connecting Torch Supply Leads
WARNING
Disconnect primary power at the source before
disassembling the torch or torch leads.
Connect one end of the Torch Supply Leads to the internal
bulkhead inside the Arc Starter Box as follows:
1. Remove the cover from the Arc Starter Box if installed.
2. Feed the four hose assemblies on the Torch Supply Leads
through the boot on the lead end of the Arc Starter Box.
The lead end of the Arc Starter Box has a boot and control
connector installed.
3. Connect the four hose assemblies to the internal bulkhead
per the following figure.
A-02283
Plasma Gas (+)
Left-Hand Thread
Coolant Supply (-)
Left-Hand Thread
Secondary
Gas
Coolant Return
Control
Cable
Figure 3-23 Torch Supply Leads Connections
4. Connect the other end of the Torch Supply Leads fittings
onto the mating connections at the bulkhead panel of the
Plasma Power Supply.
A-02856
Secondary
Gas
Plasma (+)
Gas
Coolant
Return
Coolant
Supply (-)
Torch Leads
Shield Stud
Ring Lug
Figure 3-24 Torch Supply Leads Connection To Power
Supply
5. Connect the control cable connector to the mating connec-
tor on the end of the Arc Starter Box.
6. The Power Supply requires internal changes when the Op-
tional Remote Arc Starter is to be used as follows:
a. Open the Front Control/Access Panel.
b. Remove the panel by lifting the panel up and off the
studs being careful not to damage the wiring.
c. Locate the Wiring Harness with Connector attached,
14-pin CPC type, in the parts supplied with the Remote
Arc Starter.
d. At the rear of the Power Supply Bulkhead Panel place
the connector into the spare hole on the left side as
viewed from the front.
e. Secure the connector to the Power Supply Bulkhead
Panel with two screws.
J11 on CD Start
PC Board
Remote Arc Starter
Wiring Harness
Assembly
Bulkhead
Panel
Ground Stud
Art # A-02287
Figure 3-25 Installation Of Wiring Harness
f. Locate the ground stud and remove one nut and star
washer.
g. Place the two wires with ring terminals over the ground
stud and secure with the nut and star washer.
h. Locate the CD Start PC Board mounted to the Center
Chassis on the Power Supply.
i. Disconnect the plug connected to J11 on the right side
of the PC Board.
j. Reconnect the J11 plug to the mating connector on the
Wiring Harness with Connector installed above.
k. Re-install the Front/Access Panel.
l. Connect the end of the Control Cable to the 14-pin CPC
connector mounted to the Power Supply Bulkhead.