9
2.
Extension cables may result in excessive voltage
drop. Use only industrial grade 16 to 10 awg. ex-
tension cables.
Input voltage to machine must be a minimum of
95 volts while operating.
C. SECONDARY (OUTPUT) CONNECTIONS (Re-
fer to Figure 3.1)
Before making any connections to the power sup-
ply output terminals, make sure that all primary in-
put power to the machine is deenergized (off) and
that input power cable is unplugged.
Clamp the work cable to the workpiece. Be sure the
workpiece is connected to an approved earth ground
with a properly sized ground cable.
(See figure 3.1.)
D. ADJUSTMENTS & OPERATIONS
CAUTION: Never, under any circumstances, operate
the power supply with the cover removed.
In addition to the safety hazard, improper
cooling may cause damage to internal
components. Keep side panels closed
when unit is energized. Also make sure
you are adequately protected before you
start cutting - protective helmet and gloves
should always be worn. Refer to page 2
for additional operating precautions.
A. TORCH ADJUSTMENTS
Make sure power switch on console is in OFF po-
sition and unplug the input power cable.
With the torch front end facing up, assemble electrode,
swirl baffle, tip, and heat shield (supplied with Torch
Spare Parts Kit) in that order as shown in Figure 3.2.
(Electrode is reversible and the swirl baffle is symmetri-
cal. They can be assembled either way.) Apply silicone
grease to 0-ring.(See Figure 3.2)
Tighten heat shield snugly to hold the parts in firm con-
tact with each other and to the torch head. Do not over-
tighten the heat shield.
The front end of the torch contains a gas flow check
valve that acts in conjunction with the circuitry provided
in the power supply. This patented system provides a
safety interlock preventing the torch from being acci-
dentally energized with high voltage when the heat
shield is removed and the torch switch is accidentally
closed.
B. HANDY PLASMA
125 CONTROLS & ADJUST-
MENTS (See Fig. 3.3)
1.
Power Switch
- When placed in ON position, the
cooling fan will run.
2.
Power Light
- Will glow white to indicate that elec-
trical current has energized the system.
3.
Overtemperature Light
- Will glow amber under
the following conditions and contactor will be deen-
ergized, when Duty Cycle has been exceeded.
SECTION
3
INSTALLATION
Fig. 3.2 - Assembly of PT-34 Torch Front End Parts
Fig. 3.3 - Controls on Handy Plasma
125 Console
HEAT SHIELD
SWIRL BAFFLE
ELECTRODE
TORCH
NOZZLE (TIP)
O-RING
OVERLOAD LIGHT
(AMBER)
POWER SWITCH
The following sizes should be acceptable:
25 ft. extension - 16 awg. minimum
50 ft. extension - 14 awg. minimum
100 ft. extension - 12 awg. minumum
150 ft. extension - 10 awg. minimum
Greater than 150 ft. not recommended!
POWER LIGHT
