Tweco PCM-62 Machine Torch - Manual (Page 20)

INSTALLATION 3-4 Manual 0-2817
4. Connect the Control (PIP) Circuit Connectors to
the mating connectors on the Adapter supplied
on the Power Supply (see Warning).
WARNING
The Adapter supplied with the Power Supply has
two additional Shield Connectors that are used for
Shielded Systems only. These two connectors are
not used and need to be taped out of the way to
prevent contacting the Negative / Plasma or Pilot
Leads.
5. Remove the top nut and washer from the Pilot
Stud.
6. Place the lug on the Pilot Control Wire onto the
stud and secure with the nut and washer removed
in the above Step.
7. Tighten the Through - hole protector onto the
Torch Leads.
8. Check the torch for proper parts assembly.
CAUTION
The torch parts must correspond with the type of
operation. Refer to Section 4.04, Torch Parts Se-
lection.
D. Remote Pendant Control (Optional)
In machine type operations the Power Supply has an
Adapter that has a cable connector supplied at each
end of the Adapter. One end is connected at the fac-
tory to the mating connector on the Power Supply
Bulkhead area. The other end allows connection of a
Remote Pendant. The remote pendant lead connec-
tor allows connection to a remote pendant or CNC
cable while using PIP connections in the Torch As-
sembly.
Connect the remote pendant control cable to the con-
nector provided on the Adapter from the Power Sup-
ply.
2
3
4
12
14
13
Torch Control
Cable Connector
Remote Pendant/CNC
Cable Connector
PIP
Circuit
Control
OK-To-Move
3
4
12
14
13
A-01366
Figure 3-8 Remote Pendant Connector Diagram
NOTE
Refer to Appendix 2, Torch Control Cable Wiring
Diagram For Mechanized Systems, for detailed
schematic of the Adapter.
3.07 Gas Connection
A. Connection
Connect the gas, compressed air only, to the Power
Supply as described in the Manual supplied with the
Power Supply.
CAUTION
Air supply must be free of oil, moisture, and other
contaminants. Excessive oil and moisture may
cause double - arcing, rapid tip wear, or even com-
plete torch failure. Contaminants may cause poor
cutting performance and rapid electrode wear.
B. Checking Air Quality
To test the quality of air, place a welding filter lens in
front of the torch and turn on the gas. Any oil or
moisture in the air will be visible on the lens. Do not
initiate an arc!
C. Filtering
An in - line pneumatic dryer / evaporator type air
filter, capable of filtering to at least 5 microns, is re-
quired when using air from a compressor. This type
filter will insure that moisture, oil, dirt, chips, rust
particles, and other contaminants from the supply
hose do not enter the torch. For highly automated
applications, a refrigerated drier may be used