Tweco 1000 Merlin(Dec2004) - Manual (Page 26)

INSTALLATION 3-8 Manual 0-2708
C. Using Plasma Shop Air And Secondary
High-Pressure Gas Cylinder
NOTES
Refer to the regulator manufacturer’s specifications
for installation and maintenance procedures. Re-
fer to Section 6.05, System Options and Accesso-
ries, for a listing of available high-pressure regu-
lators.
Do not use an air line filter with high pressure gas
cylinders.
1. Examine the cylinder valves to be sure they are clean
and free of oil, grease or any foreign material. Mo-
mentarily open each cylinder valve to blow out any
dust which may be present.
WARNING
Do not stand in front of the valve outlet when open-
ing.
2. Each cylinder must be equipped with an adjustable high-
pressure regulator capable of pressures up to 125 psi (8.6
bar) maximum and flows of up to 700 scfh (328 lpm) for
cutting or gouging.
CAUTION
Maximum input pressure to the internal regulator
on the Power Supply must not exceed 125 psi (8.6
bar).
NOTE
A typical 50 lb. CO2 cylinder can deliver a con-
tinuous flow rate of 35 scfh (16.5 lpm). To obtain
the required flow rate for the torch, it may be nec-
essary to manifold several CO2 cylinders. Con-
tinuous flow requirements will depend on the spe-
cific application and duty cycle.
3. Connect the gas supply to the Power Supply as fol-
lows:
a. Remove the secondary gas hose and adapter from
the SECONDARY fitting at the rear panel.
PLASMA GAS
Fitting
SECONDARY
GAS Fitting
Plasma Gas
Hose
Secondary Gas
Hose
A-02182
Adapter Fitting
Figure 3-9 Removal Of Factory Installed Hardware
b. Connect the gas supply hose from the secondary gas
supply directly to the input fitting on the rear panel of
the Power Supply marked SECONDARY.
PLASMA GAS
Fitting
SECONDARY
GAS Fitting
Plasma Gas
Hose
Unused Secondary
Air Hose
(End must be plugged)
A-02163
Plasma Air Supply Hose
(Customer Supplied)
Two-Stage
Air Filter
Barb Fitting
Secondary Gas
Hose From Gas
Cylinder
Figure 3-10 Gas Connections Using Shop Air and High-
Pressure Gas Cylinder