Tweco PAK Master 150XL - Manual (Page 31)

Manual 0-2864 4-3 OPERATION
2. Plasma Gas Pressure Regulator/Filter Assembly
Pressure Regulator to adjust the plasma input gas
pressure to the Power Supply. The Pressure Regu-
lator has a built-in air line filter.
A-02110
3
5
1
4
2
Figure 4-4 Rear Panel
3. Secondary Gas Pressure Regulator/Filter Assem-
bly
Pressure Regulator to adjust the secondary input
gas pressure to the Power Supply. The Pressure
Regulator has a built-in air line filter.
4. Coolant Reservoir
The coolant reservoir supplies the system with
coolant to cool the torch and torch parts during
operation. The maximum capacity of the reser-
voir is two gallons of coolant.
Inside the reservoir, in the filler hole, is a basket
and deionizer bag. The bag removes charged par-
ticles from the coolant after it is returned to the
reservoir and prevents the coolant from becom-
ing conductive. If the coolant becomes conduc-
tive it must be replaced (see NOTE).
NOTE
Refer to Section 5.02, General Maintenance, sub-
sections 'E' and 'F' for procedures on checking and
replacing coolant.
5. Gas Input
Input connections for plasma and secondary gases.
Acceptable gases are as follows:
Plasma Gases - Air, Nitrogen, Argon Hydrogen
Secondary Gases - Air, Nitrogen, Carbon Dioxide
WARNING
This unit not to be used with oxygen (O
2
).
6. Optional Two Stage Air Line Filter
The optional filter will remove moisture and con-
taminants from the air stream when using com-
pressed air. The filter is capable of filtering to at
least 5 microns.
A-02082
5
2
3
4
1
6
Figure 4-5 Rear Panel With Optional Two Stage
Filter
4.03 Sequence of Operation
The following is a typical sequence of operation for this
cutting system. Refer to Appendix 2 for a block diagram.
1. Close main power source disconnect.
a. AC power is available at the Power Supply.
2. Place RUN/SET switch to RUN mode.