Tweco 150XL CE PAK Master - Manuel (Page 31)

Manual 0-2826 4-3 OPERATION
4. Coolant Reservoir
The coolant reservoir supplies the system with cool-
ant to cool the torch and torch parts during opera-
tion. The maximum capacity of the reservoir 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.
A-02297
5
2
3
4
1
6
Figure 4-4 Rear Panel
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. Two Stage Air Line Filter
Filter will remove moisture and contaminants from
the air stream when using compressed air. The
filter is capable of filtering to at least 5 microns.
7. CNC Connector (J22)
External connector provided for connection of
CNC Control, Standoff Control SC11 or Remote
Hand Pendant Control.
8. Knockout
Knockout provided that allows internal connec-
tion of CNC Control to a Terminal Block.
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.
3. Place the ON/OFF power switch on the front panel
of the Power Supply to ON.
a. Fan turns ON.
b. Coolant Pump turns ON.
c. AC Power indicator blinks ON and OFF for eight
seconds then stays ON.
d. Start-up pre-purge of gas.
4. Place RUN/SET switch to SET mode.
a. Gas Solenoid opens and gas flows to set pres-
sure.
b. GAS indicator turns ON.
NOTE
GAS indicator will not come ON if the gas pres-
sure is set below 40 psi (2.8 bar) at the Regulator/
Filter Assembly or if coolant flow switch is not sat-
isfied.
5. Place RUN/SET switch to RUN mode.
a. Gas flow stops.
b. GAS indicator turns OFF.
6. Protect eyes and activate system (CNC start sig-
nal or press Remote Hand Pendant Switch).
a. Gas pre-flows starts.
b. GAS indicator turns ON.