BOC Smootharc TIG185 AC/DC, Руководство по эксплуатации

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6.0 Control panel
6.1 Function switches
1 AC/DC switch . AC switch intended for aluminium. DC position is for all
other materials.
2 2T/4T switch (trigger latching). This special feature allows the
operator to relax the trigger after first depressing it, the gas shielding
to start before the welding commences. This feature is of particular
importance as it ensures that the weld will have adequate gas
shielding to eliminate the risk of oxidisation (contaminants) causing a
defective weld. (Remember, a defective weld may not be detected by
a visual inspection.)
3 MMA/TIG switch . Allows you to switch between TIG and
MMA welding.
4 Frequency switch . Changes the pulse frequency.
6.2 Adjustment knobs
1 Welding current adjustment . Adjusts welding current.
2 AC balance adjustment . In addition to increasing the welding current
in AC applications, a change in the penetration or cleaning when
welding can be achieved by adjusting the AC Balance.
3 The AC balance (time spend in the positive (maximum cleaning)
or negative (maximum penetration) can be adjusted by using the
AC balance adjustment . By adjusting the AC balance adjustment from
20-100% progressively increases the time in the positive side of the
AC curve (higher heat concentration in the non-consumable tungsten
electrode). This has the result that the amount of penetration is
decreased.
4 With the AC balance adjustment set at 20%, higher currents can be
used on thinner electrodes, resulting in the use of smaller gas cups,
therefore increasing visibility and reducing gas flows.
5 Down slope adjustment . Down-slope adjustment allows a gradual
decrease in amperage at the end of the weld to improve crater
control.
6 Post flow adjustment . Allows a variable flow of shielding gas after
current has been switched off to ensure that no oxidation of both the
tungsten and the weld pool happens.
7 Welding current adjustment . When switched to MMA function only
the current control knob is active.
6.3 Indicator function
1 Over-heat protection indicator . This indicator will illuminate when
the duty cycle of the machine has been exceeded. The machine will
normally reset itself after 2-3 minutes.
2 Over-current protection indicator . This indicator will illuminate when
an accidental over-current has occurred.
3 VRD indicator . This indicator will illuminate when useing MMA mode.
4 Foot control indicator . This indicator will illuminate when foot control
is in use.
24 BOC Smootharc TIG 185 AC/DC Operating Manual
Control Panel of TIG 185 AC/DC
VRD
Welding current adjustment
Down slope adjustment
Post flow adjustment
AC balance adjustment
MMA/TIG switch
AC/DC switch
2T/4T switch
Current meter
Over-heat
protection indicator
Over-current
protection indicator
Frequency switch
VRD indicator
Foot control indicator