Kemppi FastMig KM300 Operating Manual

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Kemppi FastMig KM300 Operating Manual Manual pdf 15 page image

4.3 eleCtriC netWOrk OvervOltage Or unDervOltageIf the power source is used in an electric network with insufficient voltage (less than 300 V),the control features of the device are disabled automatically.The primary circuits of the power source are protected against power spikes. The product’smains voltage range is broad enough to prevent overvoltage problems at up to 440 V (seeSection 8, ‘Technical specifications’). Make sure that the voltage remains within the allowedrange, especially if the operating power is supplied by a generator set.4.4 Missing phase in the eleCtriC netWOrkIf a phase is missing from the mains current, the welding features will be adversely affected orthe machine may have problems starting. Loss of a phase can be caused by a:• Blown mains fuse.• Damaged mains cable.• Poor mains cable connection in the machine’s terminal block or mains socket.4.5 MaChine errOr CODesThe machine always checks its operation automatically during start-up and reports anyfailures detected. If failures are detected during start-up, they are shown as error codes on thecontrol panel display.power source error codesErr3 Power source overvoltageThe machine has stopped the welding because it has detected momentary voltage spikes orcontinuous overvoltage dangerous to the machine in the electric network. Check the qualityof the supply network.Err4 Power source overheatingThe power source has overheated. The cause may be one of the following:1) The power source has been used for a long time at maximum power.2) The circulation of cooling air to the power source is blocked.3) The cooling system has experienced a failure.Remove any obstacle to air circulation, and wait until the power source fan has cooled downthe machine.Err5 Water unit alarmThe water circulation is blocked. The cause may be one of the following:1) Congestion or disconnection in the cooling pipeline.2) Insufficient cooling liquid.3) Excessive cooling liquid temperature.Check the circulation of the cooling liquid and the air circulation of the water unit.Err23 Power source overvoltage warningThe power source has detected voltage spikes in the electric network. Short power spikescan be managed. They do not lead to interruptions in welding but may decrease the weldingquality. Check the quality of the supply network.Err61 The water unit is not foundThe water unit is not connected to the equipment, or the connection has failed.Set the machine to gas cooling (3.3.7) if you are using a gas-cooled welding gun, or connect awater unit.Err154 Overloading of the wire feed motorThe welding has been interrupted because the wire feeding engine power has risen to a highlevel. The cause may be congestion in the wire line. Check the wire lead, contact tip, and feedrollers.Err155 Warning of the wire feed unit overheatingThe voltage level of the wire feeding engine has increased. The cause may be a stained wirelead or a gun cable that is twisted at a sharp angle. Check the state of the gun, and clean thewire line if this is necessary.EN13FastMig KM 300, 400, 500 / © Kemppi Oy /0901FISVNODAENDENLFRESPLRU