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Forney 270 MIG Owner's Manual page 18

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The display can view numbers from 1 to 99 (1 being the minimum value and 99 the maximum
value). The display shows the real welding current and the value of the parameter you selected
and adjusted during the regulation phase. After welding the display will view the welding
current value for a maximum of 5 seconds.
Aluminium Welding
The machine should be set up as for mild steel except for the following changes:
• 100% ARGON as welding protective gas.
• Ensure that your torch is set up for aluminum welding:
• The length of the torch cable should not exceed 10' (it is advisable not to use longer torches).
• Install a teflon wire liner. Follow the instructions for changing the renewing of the wire liner.
• Ensure that drive rolls are suitable for aluminum wire.
• Use contact tips that are suitable for aluminum wire and make sure that the diameter of the
contact tip hole corresponds to the wire diameter that is going to be used.
For aluminium welding or for welding those materials such as CUSI and for applications
where the power source needs to be placed far from the working area the spool gun is
particularly suitable. This torch incorporates a wire feeding motor and the welding wire spool.
The potentiometer integrated on the handle allows constant regulation of wire speed while an
internal device in the welder recognizes and shows the spool gun connection when the green
LED on the front of the welder lights up.
Technical Data Information Guide
1. Serial number of the unit
2. Welder model
3. Type of characteristic
4. Min. - Max rated No Load Voltage
5. Type of welding
6. Symbol for the main supply and no. of phases
7. Rated value of the supply voltage
8. Code letter for degree of insulation
18
9. Protection degree
10. Power
11. Size of the necessary main fuse
12. Supply current
13. Welding supply and voltage
14. Power Factor
15. Control range (current / voltage)
16. Reference standard
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