Operating instructions - EWM Hightec Welding GmbH

Design and functionProtecting welding parameters from unauthorised access5.7.4 Setting the shielding gas quantityWelding processRecommended shielding gas quantityMAG weldingMIG brazingMIG welding (aluminium)Wire diameter x 11.5 = l/minWire diameter x 11.5 = l/minWire diameter x 13.5 = l/min (100 % argon)Helium-rich gas mixtures require a higher gas volume!The table below can be used to correct the gas volume calculated where necessary:Shielding gasFactor75% Ar/25% He 1.1450% Ar/50% He 1.3525% Ar/75% He 1.75100% He 3.16NOTEIncorrect shielding gas setting!If the shielding gas setting is too low or too high, this can introduce air to the weld pooland may cause pores to form.• Adjust the shielding gas quantity to suit the welding task!5.8 Protecting welding parameters from unauthorised accessTo protect against unauthorised or unintentional adjustment of the welding parameters on the machine,the control input can be locked with the aid of a key switch.In key switch position 1 all functions and parameters can be set without restriction.In key switch position 0 the following functions and parameters cannot be changed:• Job switching function, welding task selection(block job mode possible with Power-control torch)• Job Manager mode• Program Steps mode• Program A mode• Job Info mode• Super pulse functionNOTEThe function of the key switch is implemented with a special parameter. See chapter"Advanced Settings"099-005234-EW50116.04.201233