jcb G20, Руководство оператора

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About the Product
Installation and Removal
23 9831/0650-3 23
Cold Start
For a temperature range between 0°C (32.0°F) to -15°C (59.0°F), the standard QS canopy generator will enable
the engine to crank at sufficient speed for cold starting with the standard 10w-40 engine oil. At this temperature,
the grid heater is not required on the engine. but starting can be aided with the use of the coolant heater
installed on the generator.
Figure 16.
A Coolant heater - Diesel fuelled B Coolant heater - Electrically operated (Optional)
If the generator is to be cold started in temperature between -15°C (59.0°F) to -25°C (77.0°F), the engine
will require a block heater and an oil of at least 5w40. The alternators and control panels should be installed
with anti-condensation heaters. The canopy heaters should also be used based on the generator application.
Alternative engine block heaters may be required if an auxiliary power supply is not available.
Temperatures below -25°C (77.0°F) are considered as Extreme operating conditions. At this temperatures,
the standard QS generator will need special measures and additional modifications to protect the engine and
engine components from freezing or failing to operate. The additional modifications are completed by specialist
companies, usually located locally in the region, who have local experience and knowledge of these cold climate
issues.
Cold Running
The engine is designed to operate at temperatures between 0°C (32.0°F) to -15°C (59.0°F) when the engine
is filled with standard 10w40 oil.
For generators and engines operating in temperatures between -15°C (59.0°F) to -25°C (77.0°F) an appropriate
oil grade such as 5x40 and a coolant mixture of minimum 40% anti-freeze must be used.
For generators and engines operating in temperatures below -25°C (77.0°F), the engine would need a block
heater to start. At these operating temperatures the machine would need special modifications to operate
correctly. The additional modifications are completed by specialist companies, usually located locally in the
region, who have local experience and knowledge of these cold climate issues.
To give optimum running performance special attention should be given to correct oils and coolants. Use of
correct fuel specification and heaters on fuel tank, fuel line, CCV (Crankcase Ventilation) and air intake hose
will improve the performance.
Generator loads must also be considered when operating at extreme cold temperatures. Light loads will
increase the risk of engines producing more water vapour. If the engine is not sufficiently hot to burn off the
vapour in extreme cold climates this will lead to freezing within the CCV breather systems.
Important Notes
If the generator is operated in the cold weather climates without special protective measures it may lead to
the following consequential issues:
1. If the generators are operated in extremely cold climates without the above measures being implemented,
the machine could suffer from reduced service life or even catastrophic mechanical and electrical
component failures.
2. Use of incorrect specification of engine oil, will result in vital bearing faces of the engine not being lubricated
and would cause overheating, scoring and even seizure.