Prest-O-Lite 380, Instruction Manual

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23
SeCTION 3 OPeRATION
Figure 3-2 Assembly of “xT” Consumable Parts
that acts in conjunction with the flow switch and circuitry
within the power source. This system prevents the torch
from being energized with high voltage if the torch switch
is accidentally closed when the shield is removed. AlWAYS
RePlACe TORCh WITh The PROPeR TORCh mANUFAC-
TUReD BY Prest-O-lite SINCe IT AlONe CONTAINS Prest-
O-lite’S PATeNTeD SAFeTY INTeRlOCK.
3.4 CUTTING WITh The PT-31xl
Wear the usual protective gloves, clothing, and helmet.
helmet with filter lens shade No. 6 or 7 should provide
adequate protection for your eyes.
Never touch any parts forward of the torch handle (tip,
heat shield, electrode, etc.) unless the power switch is in
the OFF position.
CAUTION: Do not depress the torch switch unless the
torch nozzle is touching the workpiece or
within 0.02" (0.51mm) of workpiece.
e. "Over Temperature" leD (Yellow light) - will turn
on if the machine becomes overheated and will turn
off automatically after the machine cools down if the
on/off switch is still on.
"low Air Flow" leD (Green light) - will turn on during
operation when the air flow is set correctly the LED
will switch off below 15psi (1 bar).
On/Off Switch leD (Green light) - will light when
power supply is switched on and power is applied.
LED will turn off when switch is in OFF position.
Air Pressure Gauge (Side Panel) - Shows air pressure
in bars and psi.
3.3 ASSemBlING PT-31xl COmSUmABle
PARTS
make sure power switch on power source is in OFF
position and primary input power is deenergized.
Install the electrode, baffle, nozzle, and heat shield as shown in
Fig. 3-2. Tighten heat shield snugly but do not overtighten.
Be SURe to install the swirl baffle in the torch. Failure
to do so would allow the nozzle (tip) to contact the
electrode. This contact would permit high voltage to be
applied to the nozzle. Your contact with the nozzle or
workpiece could then result in serious injury or death
by electric shock.
The PT-31xl torch head contains a gas flow check valve
Figure 3-3 effect of Cutting Speed
TOO FAST TOO SLOW CORRECT
NOTE: Nozzles
Marked By
Amperage
0558006190
Plunger
Seat
0558006191
Electrode
0558006192
0558006189
Baffle
Nozzle
Heat Shield
0558006185
30/40A
0558006187