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B-4 OPERATION B-4
CONTROLS AND SETTINGS
All operator controls and adjustments are located on the case front of the TIG machine. Refer to Figure B.1
and the corresponding explanations.
FIGURE B.1 CONTROL PANEL
1. FRONT PANEL 2. BACK PANEL
1. indication of cutting current 2.power
indication 3. warning indication
4. cutting/testing gas switch
5. cutting current regulator
6. Central Torch Connector
8. workpiece cable 9. nameplate
10. air pressure-reduced valve
11. pressure air entrance 12. fan
13. indication of air pressure-reduced
valve
14. grounding column 15. input cable
16,power switch 17.indication of over heat
18. indication of PSI OK TO CUT
(
minimum
)
19.fuse 20A 20.CNC
CONTROL FUNCTIONALITY
1 DIGITAL METER
-
A 3 digit LED meter is
used to display the preset output current level
before welding, and actual output level while
welding: A lit display indicates input power is turned
on.
2.power indication
Turn power on, it will illuminate indicating.
3. warning indication
output current is too high or the machine fails.
4. cutting/testing gas switch
Select “Test” to set air flow/air pressure for the torch.
The operating pressure should always be set while
this is in Test since it does not require the torch to
be live. This allows the air to flow constantly until
the switch is placed back into the normal, timed
mode. To set the air pressure, turn the torch until
the nozzle is facing up, then place the flow tube
(clear plastic tube with ball in it) over the nozzle.
Select “Test” on the machine. With the air flowing,
adjust the air pressure/flow
up or down until the ball is floating in the sight
window of the flow tube. If no flow tube is present or
provided with your unit, then simply set the air
pressure while “Test” is selected until it is
somewhere between 70-75 psi. Pressure over or
under this can result in an unstable arc.
5. cutting current regulator
Displays selected amperage until cut starts. Once
cut starts, then amps display dynamically by
displaying the actual output amps while cutting.
While Pilot arc is engaged or when cut starts, the
amps will drop to 20-30 amps until continuity is
sensed and cutting arc takes over and the pilot arc
disengages. Pilot arc is not designed to Cut. It only
serves to scour the surface to gain continuity so that
the cutting arc can engage.
6. Central Torch Connector
The central torch connector is an all-in-one
connector. This is a universal style connection
which allows greater interchangeability of torches. It
also greatly simplifies torch connection. When
installing the connector, line up the tab on the male
piece with the slot on the connector on the machine
side connector. Insert the coupling fully and then
tighten the collar nut on the torch fitting hand tight.
Do not use tools.
8. Work Piece Connector
The work lead (sometimes referred to as “ground”)
is used to complete the circuit. The torch pilot arc
may activate, but the unit will not actually cut if the
work lead is not connected to the work piece. If an
arc is present but the unit will not easily cut or is
very slow or poor cutting any material, check and
make sure work lead is connected and is connected
to a clean spot on the work.
Содержание DIGI-CUT70
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