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Preparation for Work - 5
TIG (GTAW) Welding :
The following actions need to be done before starting the welding procedures:
1- The TIG welding is generally carried out using the DC (–) pole. Connect the torch cable to
the (–) output of the machine (6) and the grounding clamp to the (+) output (10). Turn the
connecter ¼ turn clockwise after inserting in the plug with the guide pin on top. Attach the TIG
torch gas hose to the TIG torch gas connection socket (5). Make the connection between the
gas cylinder regulator and the gas hose connection socket (12). Connect the TIG torch trigger
connector to the TIG torch trigger connection socket (9) on the front panel of the machine.
2- Connect the work clamp to a clean place on the work piece free of paint or rust with the jaws
incomplete contact.
3- Insert the mains cable to a suitable outlet.
4- Perform the following checks before starting the welding procedure:
a- Make sure that the welding machine is grounded securely.
b- Make sure that all contact surfaces, especially the contact between the clamp at the end of
the chassis cable and the work piece, are well secured.
c- Check that the welding cables are attached correctly.
d- The particles and sparks splashing around while Welding may cause a fire. Therefore,
makesure that no flammable materials are present in the welding area.
5- Turn on the On/Off switch (11).
6- Select the desired welding mode and trigger mode with welding current and parameter control
knob. The welding machine can operate in the 2 trigger and 4 trigger TIG modes. In the TIG
welding mode, Lift-TIG and High Frequency TIG operations are available. In the Lift-TIG mode, a
low-current short circuit is made by touching the TIG torch to the work piece, then the TIG arc is
formed while lifting the torch. In the HF mode, the welding machine is ready for high frequency
welding, hence the arc forms without touching the TIG torch to the work piece.
7- If in TIG 4T mode and the output pulse function is turned on, all parameters of TIG can be
adjusted. If in TIG 2T mode and the output pulse function is turned on, the start current and
crater current is 5A; If the pulse function is closed, the parameter of base current (L5), pulse
frequency (L15) and pulse width (L14) cannot be adjusted.
Note: In 4T mode, press and hold the trigger during the set
crater time
, the machine reaches
the set
crater current
. Otherwise, the welding current ends without reaching to the set crater
current.
8- The welding current (L7) can be adjusted directly when the welder is tune on. Adjust the ‘welding
current and parameter control knob’, the welding current LED (L7) is twinkling; It means the
welding current can be adjusted. If the adjustment is completed, confirm the parameter by
pressing the ‘knob’ or the system will confirm the parameter automatically after 3 seconds.
9- Output pulse selection is can be done by using Welding current and parameter control knob.
Press the ‘knob’. Adjust the control knob and select the pulse LED (L10 is on); press the control
knob again, the pulse LED (L10) is twinkling; It means the output pulse function can be turned on
or turned off. If the display is “ON”, the output pulse function is turned on; if the display is “OFF”,
the output pulse function is turned off. When the pulse LED (L10) is twinkling, press the control
knob again, the output pulsed conditions transform by “ON” into “OFF” or transform by “OFF”
into “ON”. Complete the adjustment after 3 seconds, the operation panel will return to original
condition; welding current LED (L7) is on.
If the welding mode is TIG and the output pulse function is turned on, the pulse selection led
(L10) is on. If the output pulse function is turned off, the pulse selection led (L10) is off. In MMA
mode, the pulse selection led (L10) is off. All preset parameters with hold function.
Other parameters are set as follows: Press the ‘Welding current and parameter control knob and
select the desidred parameter by turning the knob. When the desired parameter is reached, the
corresponding led is lighted. Press the control knob again, parameter is twinkling; It means the
parameter can be adjusted. If the adjustment is completed, confirm the parameter by pressing
the ‘control knob’; or the system will confirm the parameter automatically after 3 seconds.
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