Kemppi WELDFORCE KPS 3500 Operation Instructions Manual

Also see for WELDFORCE KPS 3500: Service manual Operation instructions

Contents

10 – KEMPPI WELDFORCE KPS3500 / 0520 © KEMPPI OY6. OPERATION DISTURBANCESIn case of problems contact the Kemppi works in Lahti, Finland, or your local Kemppi dealer.Check the maintenance objects before the machine is sent to the Service Workshop.6.1. OPERATION OF THE OVERLOAD PROTECTIONYellow pilot lamp H12 of thermal protection is lit when thermostat has operated due to overheatingof machine.The thermostat of machine will operate, if machine is continuously loaded over rated values orcooling air circulation is blocked.Cooling fan cools down the machine and when the pilot lamp is not lit the machine is automaticallyready for welding.6.2. CONTROL FUSESFuse F11, 6.3 A delayed, on the rear wall of machine is as protection for connection of auxiliarydevices X14-15.Use same type and rating of fuse which is marked beside the fuse adapter. Damagecaused by a wrong type fuse is not covered by the guarantee.6.3. UNDER- AND OVERVOLTAGES IN THE MAINS SUPPLYPrimary circuits of machine are protected against sudden, transient overvoltages.Machine is designed to withstand 3 x 530 V voltage continuously (see technical data). See toit that voltage is kept within admissible limits especially when mains supply is taken e.g. fromcombustion engine generator.If the mains has undervoltage (under approx. 350 V), machine control stops to operateautomatically.6.4. LOSS OF A PHASE IN THE MAINS SUPPLYLoss of a phase causes noticeable poorer welding properties than normally or the machine doesn’tget started at all. Loss of a phase can be due to following:– blowing of mains supply fuse– defective mains cable– bad connection of mains connection cable on terminal block or plug of machine

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