Tweco 1000 Merlin(Dec2004) - Manual (Page 23)

Manual 0-2708 3-5 INSTALLATION
2. Connect the input cable inside the power supply as fol-
lows:
NOTE
Three-phase operation requires a 3-conductor
cable with ground.
a. Locate the ground stud and remove the top nut
and washer.
b. Install a lug terminal on the ground wire.
c. Place the ground wire onto the ground stud
and secure with the nut and washer.
WARNING
The electrical ground wire must be connected to
the ground lug in the base of the unit for proper
grounding.
d. Loosen L1, L2, and L3 set screws on the Main Con-
tactor.
e. Insert the three live conductor wires into the L1,
L2, and L3 terminals on the contactor as follows:
• Line 1 to terminal L1.
• Line 2 to terminal L2.
• Line 3 to terminal L3.
f. Tighten all set screws.
A-02160
L1
L2
L3
Ground
Three-Phase
Figure 3-5 Primary Input Cable Connections
3.08 Gas Connections
The Power Supply provides the liquid cooling and gases to
support operation of the Liquid Cooled Maximizer 300 Torch.
NOTE
Refer to the Liquid Cooled Maximizer 300 Torch
Instruction Manual (Cat. No. 0-2710) for infor-
mation on plasma and secondary gas selection and
requirements.
The following are available gases that can be used with
the Liquid Cooled Maximizer 300 Torch:
Plasma Gases: Compressed Air, Oxygen (O2), Nitrogen
(N2), or Argon/Hydrogen (Ar/H2)
Secondary Gases: Compressed Air, Oxygen (O2), Nitro-
gen (N2), Carbon Dioxide (CO2), or Tap Water
Gas requirements vary depending on the application. The gases
are connected to the rear panel connections of the power sup-
ply. Depending on the options installed and the source of the
gases will determine the installation of filters and regulators.
This sub-section includes information for connecting the gas
supplies to the Power Supply. The information is grouped in
paragraphs for different types of gases and options as follows:
A. Using Shop Air
B. Using High-Pressure Gas Cylinders
C. Using Plasma Shop Air and Secondary High-Pres-
sure Gas Cylinder
D. Using Water Secondary
Refer to the appropriate paragraph(s) for the desired ap-
plication to be used.