A regular generator service program should include tests and checks of the following:
Radiator/heat exchanger, coolant, hoses and connections, fan drive pulley and fan, fan belts, jacket water heater, water pump, thermostats.
Fuel tank, water trap/separator, fuel lines and connections, governor and controls, fuel filters – primary/secondary, fuel pressure, air induction and exhaust system, air filter, air filter service indicator, air inlet system, turbocharger, exhaust manifold, valves and valve rotators.
Lubrication Oil System
Oil, oil filters, oil pressure, crankcase breather.
Batteries, battery specific gravity, battery charger, starting motor, alternator, engine monitor and safety controls, gauges, remote annunciators/alarms
Bearings, slip rings and brushes, space heaters, vibration isolators.
Start controls – manual/auto, voltmeter, ammeter, frequency meter, circuit breaker, auto transfer switch.
Gas lines and connections, carburettor and linkage, magneto/distributor, ignition system, spark plugs.
Main stator, main rotor, exciter stator, exciter rotor.
With full load, perform a two to four hour load test.
Overall Energy Systems Testing
As well as performing the periodic Planned Maintenance of each part of the system, consideration should be given to testing the entire system on a regular basis.
An overall system test will involve putting the critical load at risk so careful arrangements and agreements must be made.
Mains Failure Test
Disconnect the mains supply to the protected power equipment for an extended period and check, without generator:
1. If the UPS is fitted with auto-restart facilities that the system returns to normal operation automatically, otherwise all UPS modules can be re-started manually and the system restored to normal operation.
2. All alarms can be reset.
If a generator is installed:
The Automatic Mains Fail (AMF equipment operates correctly).
The UPS signals a mains failure during the changeover.
The generator shuts down after the expected time.
The UPS accepts the restored mains power supply and recharges the batteries.
All alarms can be reset.
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