![]() ![]() Empty tanks can also result from testing a generator monthly without checking the fuel level. Stuck fuel gauges or fuel gauges that show faulty levels commonly cause empty fuel tanks. In either case, the generator behaves as if it were out of fuel.Įmpty Fuel Tank. When fuel bleeds back into a generator's fuel tank instead of going to the engine, air in the injection mechanism or faulty check valves could be the cause. If the proper resetting procedure is not followed, a control error could also occur after a fault shutdown.įuel Bleed Back. Many generators fail to start because controls were left on an incorrect setting after maintenance or testing. Oil leaks are caused by wet stacking, a condition where oil, fuel, and other liquids build up in a generator's exhaust pipes due to carbonized fuel injection tips and faulty crankcase breathers that release too much oil as the generator vents.Ĭontrol Setting Errors. If they are discovered while a generator is running, the problem could be a malfunctioning fuel pump or a broken fuel line. Due to the odor emitted, fuel leaks are usually detectable during regular maintenance. When a generator has insufficient coolant, it is not prepared to operate for a long time, which could lead to a failure when a facility needs it most.įuel Leak. Generators are designed to shut down when they become too hot. In most cases, battery failure is caused by loose connections or sulfation buildup - a condition where lead sulfates accumulate on battery plates. Battery failure is the most common cause of generator failure. A technician is dispatched for an emergency inspection which can take six times longer to perform than monthly maintenance.Įmergency inspections usually reveal one of seven problems:īattery Failure. But not all organizations prioritize routine maintenance, so when a problem occurs it can limit or stop a generator's power production and cause a failure. Monthly inspections - which should include exercising the transfer switch and running the generator for a minimum of 30 minutes - can help detect most problems. And, as generators age, there is greater risk of mechanical failure if the equipment is not serviced regularly. Because of their infrequent use, some problems go undetected. They typically serve as a secondary power source during an outage. Generators are often used as backup or emergency power supplies.
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