Mitsubishi generator maintenance Symptom overheating fault analysis of the reasons are as follows: (1) generator overload; (2) the load power factor is too low; (3) the speed is too low; (4) the generator of a partially shorted winding; (5 ) ventilation duct obstruction. Mitsubishi generator maintenance inspection and treatment methods (a) the load current, the voltage does not exceed the rating; (2) to adjust the load, so that the excitation current does not exceed the rating; (3) to adjust the speed rating; (4) to identify the short-circuit point, repair and replacement coils; (5) to exclude obstruction, disassemble the motor, completely blown clean through each duct. Mitsubishi generator maintenance site preparation: (1) power generator maintenance and operation of the site should be isolated from the venue, the venue should be spacious, clean and tidy, so safe, convenient to carry out inspections. Around not polluted. Core (2) Check the generator should be possible in the room, indoor should be kept clean and dry to prevent rain, snow and dirt. If you had to check in outdoor generator maintenance, special attention should be dust and snow do not fall on the transformer and check transformer 110kVA and above, must build temporary sheds or install tents. Core exposed to the air time, shall not exceed the following: ① air when relative humidity less than 65%, not more than 16h; ② The air relative humidity less than 75%, not more than 12h; their time according to the following way to calculate: the generator with oil transportation, oil discharge from the start when counting; the generator without oil transportation by cover or uncover the lid open any wall, counting to begin oiling or large cap and hole plates have been sealed up. (3) Mitsubishi generator repair site layout should give full attention to safety. Selected position when lifting equipment, should pay close attention to the distance range of activities and live parts of the crane meets safety requirements when using temporary hanger, hanger stand from falling to consider the safety, but also consider the ground, twisted grinding location. Diesel generator power shortage, load large automatic shutdown configuration troubleshooting a time 200KVA generator generator total less than 60 hours, when a load current of 120A outside the emergency generator will automatically shut down after a few hours of maintenance troubleshooting had finally been recovery. Symptom: normal engine start, idle properly. Together over the open peripheral load current from 0 to 120A, for about 1 minute until smoky engine speed drops down significantly. Failure Analysis: generator configured to 200KVA, carried the load current can reach 360A, 120A only now load automatically shut down the engine to move Cummins generator maintenance, engine power is obviously insufficient, part of the problem may supply line. Troubleshooting process: 1, the replacement of diesel generators and sediment filter core, restart the engine after correct assembly and power generation, with load currents can reach 160A and then automatically shut down; 2, open play tank dumping sewage discharge valve diesel fuel moisture content than found Large imports of generator maintenance, after the exclusion of dumping sewage water valve installed start the engine again, when negative energy up to 200A or down; 3, open the tank drain valve completely let go of all the diesel fuel tank, found that diesel impurities, dirt more . Washed with high-pressure tank of diesel generator maintenance pump gas, re-fueling (with gauze filter oil timber) flush tank back and forth and let go of oil contains impurities in the oil until the release of dirt is very clear and free of impurities. And then re-join the diesel (with a gauze filter when adding diesel), restart the engine, close the load switch open, current until 340A (when all possible load) in normal operation. Fault completely ruled out. Power generator maintenance, generator maintenance Conghua, on firewood provided by the Electrical and Mechanical and Electrical Equipment Co., Dongguan ShangXi firewood. Electrical Equipment Co., Ltd., Dongguan ShangXi Chai (www.dongguanfadianji.cn) strong, credible, diesel generator sets and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the diesel generator and you hand into the brilliant, for a better future!