Kemppi Kempomat 2500 Operating Manual

Also see for 3200: Technical & service manual Operating manual Operating manual Operation instructions Service manual

Contents

Kemppi Kempomat 2500 Operating Manual Manual pdf 17 page image

ENpilot lamps of the machine report about electric function:The green pilot lamp indicating that the machine is ready for operation is always illuminated,when the machine is connected to mains voltage and you have selected welding voltagerange from the main switch.The yellow pilot lamp for thermal protection is illuminated, when thermal protection of thewelding circuit has released due to overheating. The protection releases if the power source iscontinuously loaded over rated values or the cooling air circulation has been obstructed.The cooling fan is cooling down the machine and after the pilot lamp has switched off, themachine is again ready for welding from the gun trigger.Control fuseOn the rear plate of the power source the fuse 8 A delayed is the short-circuit protection. Usethe fuse size and type according to markings. Damage caused by a wrong type fuse is notcovered by the guarantee. If the fuse is blowing again, send the unit to service.4.5 adjustment FOr arC rOughnessArc roughness is adjusted by connecting the return current cable to the applicable one of thetwo dix-connectors on the front plate.The connector marked with symbol I gives a rougher arc, which is used for welding of thinsheets and ferrous metals by 0.6 - 1.0 mm wires and especially with CO² shielding gas. Theconnector marked with symbol II is suitable for thicker wires and especially for aluminium andstainless materials. The most suitable roughness is, however, most dependent on the weldingcase. You will find the best position by testing the different positions.4.6 OperatiOn OF COOling FanThe cooling fan on the rear plate of the Kempomat machine is started and stopped accordingto use. The cooling fan is started after ca. 15 s after weld start and stopped after ca. 10 minafter weld end or release of the overheat protection.NOTE! The fan is intaking air from rear plate side! Don´t switch off the unit with the main switchbefore the cooling fan has automatically stopped. By open circuit the cooling fan does not getstarted.5. COntrOl panels and adjustments5.1 wire Feed speed pOtentiOmeterThe wire feed speed is adjusted steplessly with the potentiometer on the front panel, see theparagraph Panels. The potentiometer has the memory scale for max. speeds of 18 m/min and25 m/min. See the section Installation of wire feed equipment, paragraph 3. Max. wire feedspeed.5.2 burn baCK timeDifferent filler materials and shielding gases behave in different ways in the welding end, sothat you should switch off the welding current with a delay, which is suitable for wire feedstopping according to the welding case.If you try to end welding with an unsuitable burn back time, the wire will burn in the contacttip, there will be too big “balloon” at the wire end, or the wire will stick at the ending point.15Kempomat 2500, 3200, 4200 / © Kemppi Oy / 1117