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CW Product Cat UK
22 / 80
22
gas
preheaters are used for large gas outlets of carbon dioxide when the cylinder regulator is significantly cooled. the preheater has an output of 25 w and is thermostatically controlled at 70°c. capacity: carbon dioxide 1200 l/h threaded connection: carbon dioxide w 21.80 x 1 / 14 ? electrical connection: 230 v, single phase and 25 w ce marked en-61010 and insulation class ip 44. supplied with 3 m cable and 4 gaskets. the amount of gas that can be saved during mig/mag welding
is dependent on several different parametres. choice of equipment: ? working pressure in cylinder regulator/outlet point ? gas hose diametre ? gas hose length ? welding parametres ? set shielding gas flow
? number of welding starts ? welding time the correct choice of equipment and correctly set shielding gas flow can produce savings ? without additional equipment such as gas savers. see also page 24. by installing a weldflow gas saver in the equipment for tig and mig/mag welding, optimum saving function is achieved because: ? the gas saver is installed in the gas hose close to the welding unit. this means that the effect of the gas hose's dimensions and the cylinder regulator is subordinated ? the desired shielding gas flow in the gas cap is set with the aid of a separate flow metre and the measurement takes place at the gas cap, which is the correct measurement point for shielding gas flow ? weldflow is a cost-effective solution the new location of the regulator/valve minimises the influence of the pressure build-up in the gas hose, and the correct "gas boost" can be achieved. weldflow has good capacity at low pressures (1?2 bar). this means that the pressure build-up in the event of a welding stop can be reduced to a necessary minimum. supplied with test flow metre and hose clips, as well as operating instructions. test flow metre for shielding gas welding for argon and argon mixtures. the measurement tube must be held vertically and directly against the welding gun's nozzle. the flow is read off in the middle of the ball. the measurement range is 5?25 l/min. gas pre-heaters may not be used with oxygen or flammable gases. note! ? weldflow gas saver for quality welding. test flow meter for shielding gases. gas preheater. part no. weldflow gas saver, hose connection ø 5 mm 307923 part no. test flow metre 300766 part no. carbon dioxide 309450 accessories: regulators for gas shielded arc welding. regulators
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