Tweco Merlin 6000GST Master PS - Manual (Page 42)

OPERATION 4-4 Manual 0-2652
16. SECONDARY (N2) & PRE FLOW N2 Gas Input Fit-
ting
1/4 NPT female gas fitting used to supply the nitro-
gen (N2) secondary and pre-flow gas to the Power
Supply.
17. SECONDARY OTHER Gas Input Fitting
1/4 NPT female gas fitting used to supply any other
secondary gas to the Power Supply.
18. Access Hole For Customer Installed CNC Cable
Used to secure a CNC cable to the Power Supply
when the CNC cable does not have a connector in-
stalled. The CNC cable is fed through the strain re-
lief and connected to an internal terminal strip (TB2).
4.04 Operating System
This procedure should be followed at the beginning of
each shift:
WARNING
Disconnect primary power at the source before as-
sembling or disassembling power supply, torch
parts, or torch and leads assemblies, or adding cool-
ant.
A. Coolant Level
Check the coolant level at the coolant reservoir at the
rear of the Power Supply. Add coolant if the coolant
level is down to the ADD mark.
B. Deionizer Bag
Check the condition of the deionizer bag in the reser-
voir basket. If the bag is a yellowish brown (straw
color) then replace the bag.
C. Torch Parts
Check the torch for proper assembly. Install proper
torch parts for the application (refer to Maximizer
300 Torch Instruction Manual, Catalog No. 0-2642).
D. Input Power
Check the power source for proper input voltage.
Make sure that Power Supply is set for the proper
voltage. Close main disconnect switch or plug unit
in to supply primary power to the system.
E. Plasma Gas Supply
NOTE
Refer to the Gas Control Module Instruction
Manual 0-2641 for more information.
Connect the desired plasma gases to the gas fittings
at the rear panel of the Power Supply. Make sure
plasma gas sources meet requirements (refer to Torch
Instruction Manual). Check connections and turn
plasma gas supplies on.
Select the desired plasma gas at the Gas Control Mod-
ule front panel PLASMA gas selection switch.
F. Secondary Gas Supply
NOTE
Refer to the Gas Control Module Instruction
Manual 0-2641 for more information.
Connect the desired secondary gases to the gas fit-
tings at the rear of the Power Supply. Make sure gas
sources meet requirements (refer to Torch Instruction
Manual). Check connections and turn secondary sup-
plies on.
NOTE
If using oxygen (O
2
) plasma gas need nitrogen (N2)
as the secondary/preflow gas.
Select the desired secondary gas at the Gas Control
Module front panel SECONDARY gas selection
switch.
NOTE
Water Regulator (Catalog No. 8-6118) must be
installed between the tap water source and the
Power Supply if the supply pressure is greater than
80 psi (5.5 bar) or pressure is not steady.
WARNING
The Optional Secondary Water Control Module
must be installed when using water as the second-
ary. Refer to the Instruction Manual, 0-2641, sup-
plied with the Gas Control Module.
When using water as the secondary it may take two
or three minutes for the water to start flowing out
the front of the torch.
NOTE
For proper secondary gas selection refer to the In-
struction Manual, 0-2642, supplied with the Maxi-
mizer 300 Torch.