Tweco 40mm Cutmaster - Manual (Page 31)

CUTMASTER 40mm
Manual 0-5084 4-3 OPERATION
STANDOFF
CutMaster 40mm Gas Pressure Settings
Leads
Length
SL100
(Hand Torch)
SL100
(Mechanized Torch)
SL 100 SV
(Automation Torch)
Up to 50'
(7.6 m)
75 psi
5.2 bar
75 psi
5.2 bar
Each additional
25' (7.6 m)
Add 5 psi
0.4 bar
Add 5 psi
0.4 bar
3. For Drag cutting, adjust gas pressure from
75 - 95 psi / 5.2 - 6.5 bar (LED's in center
of control panel). Refer to the Drag Cutting
chart for pressure setting details.
DRAG (60 amps or less)
CutMaster 40mm Gas Pressure Settings
Leads
Length
SL100
(Hand Torch)
Up to 25'
(7.6 m)
80 psi
5.5 bar
Each additional
25' (7.6 m)
Add 5 psi
0.4 bar
Select Current Output Level
1. Place the Function Control Knob in one of
the three operating positions available:
RUN ,
RAPID AUTO RESTART
or LATCH . Gas flow stops.
2. Set the output current to desired amperage
with the Output Current Control Knob.
Cutting Operation
When the torch leaves the workpiece during cut-
ting operations with the Function Control Knob in
the RUN position, there is a brief delay in restart-
ing the pilot arc. With the knob in the RAPID
AUTO RESTART position, when the torch
leaves the workpiece the pilot arc restarts instant-
ly, and the cutting arc restarts instantly when the
pilot arc contacts the workpiece. (Use the 'Rapid
Auto Restart' position when cutting expanded
metal or gratings, or in gouging or trimming op-
erations when an uninterrupted restart is desired).
And with the knob in the LATCH position the
main cutting arc will be maintained after the torch
switch is released.
Typical Cutting Speeds
Cutting speeds vary according to torch output am-
perage, the type of material being cut, and opera-
tor skill. Refer to Section 4T.08 and following for
greater details.
Output current setting or cutting speeds may be
reduced to allow slower cutting when following
a line, or using a template or cutting guide while
still producing cuts of excellent quality.
Postflow
Release the trigger to stop the cutting arc. Gas
continues to flow for approximately 20 seconds.
During post - flow, if the user moves the trigger
release to the rear and presses the trigger, the pilot
arc starts. The main arc transfers to the workpiece
if the torch tip is within transfer distance to the
workpiece.
Shutdown
Turn the ON / OFF switch to OFF
(down). All Power Supply indicators shut OFF.
Unplug the input power cord or disconnect input
power. Power is removed from the system.