Thermal Arc ULTRA FLEX 350, Руководство пользователя

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this light is on, there will be open circuit voltage on
the output terminals of the machine.
The Ultra Flex
®
350 will “remember” all of the
control panel settings even after power has been
removed from the machine. The next time power is
applied the machine will come up with the same
settings. The Ultra Flex
®
350 will “remember” differ-
ent setting for each process. For example, the am-
perage could be set to 100 Amps for SMAW and 75
Amps for GTAW. When the power source is
switched between the two modes, the set amperage
will automatically change to the correct value.
Power Up Sequence
To power up the machine turn the AC power switch
(located on the rear of the machine) to the ON
position. The machine will perform some self-
checks during the power up sequence. The power
up sequence takes about 3 seconds to complete.
The digital display will show the following during
power up:
1. “350A” indicating the rating of the machine of
350 Amps.
2. “PULS” indicates the type of machine.
3. “1 PH” or “3 PH” indicating whether the input
AC power connected to the machine is single or
three phase. If the machine recognizes single
phase, the display will read “1 PH”. If the machine
recognizes three phase, the display will read “3 PH”.
4. Preset amps or volts will then be displayed
depending on the weld process. At this point the
machine is ready to weld.
SMAW Operation
(See Figure 5-1)
1. Connect the welding leads to the power source
with the correct polarity. Figure 5-1 shows typical
connections for DCEP welding. Make sure connec-
tions are properly tightened and that ground clamp
is securely attached to the workpiece.
2. Turn AC power switch to the ON position. The
initial power up sequence will be complete in ap-
proximately three seconds.
3. Press the SMAW button on the control panel.
This will select the Stick or SMAW process.
4. For LOCAL or front panel current control, make
sure the REMOTE light is off. Pressing the RE-
MOTE button will toggle the light on and off.
5. To set welding AMPS using front panel, first
press the A/V button and then use the UP and
DOWN buttons to adjust amperage.
6. For REMOTE current control, connect the re-
mote control to the 19 pin amphenol receptacle on
the rear of the machine. Make sure that the RE-
MOTE light is on, by pressing the REMOTE button
if necessary. Adjust amperage using remote poten-
tiometer. The digital meter will display preset am-
perage.
7. To adjust arc force, press the AF/IND button.
Use the UP and DOWN buttons to adjust the arc
force value. The range is 0 to 100 with 0 being no
arc force, and 100 being maximum arc force. Maxi-
mum arc force will increase the short circuit current
considerably, giving the arc more drive for out of
position welding. Arc force can be adjusted while
welding, or during standby.
Figure 5-1
430429-465
OPERATION
5-2 February 28, 2000