11
SECTION 2
INSTALLATION
1. The torch connections are located at the
flowswitch on upper left side of machine.
2. Thread the power cable and switch lead of the
PT-31XL through the right side (above pressure
gauge) bushing of the front panel. Connect
power cable to the torch fitting (left-hand threads)
and connect torch switch leads to pins 1 and 2
of M
2
located in the upper right hand corner of
machine (viewing from rear of machine) of the
control P.C. Board. Make sure the power cable
connection is wrench-tight.
3. Replace the machine cover panel.
4. Connect your air supply to the inlet connection of
the filter-regulator.
5. Clamp the work cable to the workpiece. Be sure
the workpiece is connected to an approved
earth ground with a properly sized ground cable.
2.6 SECONDARY (OUTPUT)
CONNECTIONS (REFER TO
FIG. 2-1)
Torch comes factory installed. These
instructions are for torch replacement.
Before making any connections to the power
source output terminals, make sure that all pri-
mary input power to the power source is
deenergized (off) at the main disconnect switch
and that the input power cable is unplugged. For
operator safety, the torch connections are
loaded.
Table 2.1. Recommended Sizes for Input Conductors and Line Fuses
Rated Input
Input & GND
Fuse Size
Conductor
Amps
Volts
Amp
Phases
CU/AWG*
208
29
1
No. 10
40
230
27
1
No. 10
40
*
Sized per National Code for 80°C rated copper conductors @ 30°C ambient. Not more than three
conductors in raceway or cable. Local codes should be followed if they specify sizes other than those
listed above.