| Rated Generators are designed to run with 10 load for | | | | Gas engine Gas lines and connections, carburettor and |
| the duration of an outage with no overload available | | | | linkage, magneto/distributor, ignition system, spark plugs |
| " Load MUST be reasonably balanced/distributed | | | | 1. Insulation test Main stator, main rotor, exciter stator, |
| across all the three phases | | | | exciter rotor |
| " The AMF panel is used correctly in accordance with | | | | 1.Load testing |
| manufacturers instructions Maintenance must be | | | | With full load, perform a two to four hour load test |
| carried every 6 months by a qualified generator | | | | Overall Energy Systems Testing |
| engineer | | | | As well as performing the periodic Planned |
| " A test certificate is issued each service/maintenance | | | | Maintenance of each part of the system, consideration |
| visit every 6 months Only approved parts are used | | | | should be given to testing the entire system on a |
| " All work and maintenance records are kept available | | | | regular basis. |
| " Any irregularities visual or otherwise are reported in | | | | An overall system test will involve putting the critical |
| writing immediately | | | | load at risk so careful arrangements and agreements |
| " All fuel,oil,water and other fluid levels to be kept full | | | | must be made. |
| " Generator is never allowed to run out of fuel or oil | | | | Mains Failure Test |
| etc whilst holding the load | | | | Disconnect the mains supply to the protected power |
| " Generator is never over-loaded and never allow the | | | | equipment for an extended period and check: |
| Generators to run lightly loaded for long periods | | | | With no generator : |
| " Generator is run off load once every week for a | | | | " the UPS battery supports the critical load for the |
| test of 5 minutes maximum | | | | expected autonomy time |
| " Generator is run with load once a month | | | | " all alarms and control signals are correct |
| " Generator enclosure is checked for any possible | | | | " the critical load responds correctly to any signals |
| tempering ( i.e. has the emergency stop button been | | | | received from the UPS equipment e.g. system alarms, |
| pressed and not reset?) | | | | orderly shutdown sequence etc. |
| " Someone is appointed as the responsible person to | | | | If a generator is installed: |
| overlook implementation | | | | 1. the Automatic Mains Fail (AMF) equipment operates |
| Generator Maintenance and Testing | | | | correctly |
| A regular generator service program should include | | | | 2. the generator auto-starts after the expected time |
| tests and checks of the following: | | | | 3. the generator output supply is correct and within |
| 1. Cooling system | | | | acceptable UPS input limits. |
| Radiator/heat exchanger, coolant, hoses and | | | | 4. the UPS accepts the generator supply |
| connections, fan drive pulley and fan, fan belts, jacket | | | | 5. battery recharging takes place while the UPS is |
| water heater, water pump, thermostats. | | | | being supplied by the generator. |
| 1. Fuel system | | | | Mains Restoration Test |
| Fuel tank, water trap/separator, fuel lines and | | | | Following the Mains Failure Test, re-connect the mains |
| connections, governor and controls, fuel filters - primary | | | | supply to the protected power equipment and check: |
| secondary, fuel pressure, air induction and exhaust | | | | With no generator: |
| system, air filter, air filter service indicator, air inlet | | | | If the UPS is fitted with auto-restart facilities, |
| system, turbocharger, exhaust manifold, valves and | | | | 1. The system returns to normal operation |
| valve rotators. | | | | automatically, otherwise all UPS modules can be |
| 1. Lubrication oil system | | | | re-started manually and the system restored to normal |
| Oil, oil filters, oil pressure, crankcase breather | | | | operation |
| 1.Starting system | | | | 2. All alarms can be reset. |
| Batteries, battery specific gravity, battery charger, | | | | If a generator is installed : |
| starting motor, alternator, engine monitor and safety | | | | " the Automatic Mains Fail (AMF equipment operates |
| controls, gauges, remote annunciators/alarms | | | | correctly |
| 1.Generator | | | | " the UPS signals a mains failure during the |
| Bearings, slip rings and brushes, space heaters, | | | | changeover |
| vibration isolators | | | | " the generator shuts down after the expected time |
| 1.Control panel | | | | " the UPS accepts the restored mains power supply |
| Start controls ? manual/auto, voltmeter, ammeter, | | | | and recharges the batteries |
| frequency meter, circuit breaker, auto transfer switch 1. | | | | " all alarms can be reset. |