FRAME AS-SWING 3789622 - Caterpillar

Operate the fuel conditioning module (fuel booster module group) on viscosity control during all normal operations. This automatic sensing and control will account for slight variations in the supply of fuel. These variations in the fuel even occur within a single shipment of fuel. Properly adjust the viscosity control in order to account for losses of heat in the engine piping as fuel is delivered. The viscosity of the fuel at the engine must be between 10 cSt and 20 cSt. The temperature of the fuel at the engine must not exceed 135 °C (275 °F).When the supply of fuel is changed, monitor the viscometer during the changeover in order to ensure that the viscosity control is responding correctly.Correct fuel temperature is important at the engine. The fuel must be sufficiently preheated before the injectors, or the following conditions will result:
Extremely high pressures in the injection system
An increase of the mechanical load on many components
An increase of the thermal load
Poor atomization of the fuel in the cylinder which leads to incomplete combustion
Fouling of the combustion chamber
Fouling of the exhaust systemExcessive preheat temperatures can also cause problems. Excessive preheat temperatures may cause a thermal breakdown of the fuel, especially if the fuel contains large amounts of cracked constituents. This thermal breakdown may lead to plugging of the system that is used to treat the fuel. Deposits may also form in the system.The fuel system components must be carefully operated and maintained continuously. The delivery of clean fuel at the proper viscosity is essential to reliable engine performance. Frequently sample and analyze the fuel for cleanliness at the engine. Carefully document these samples in case future questions arise regarding quality of the fuel or operation of the engine. Immediately resolve any problems, if a discrepancy is detected.The engine operator must remember that there are no alarms for fuel quality. Only the proper operation and maintenance of the entire system leads to successful operation of heavy fuel engines. The proper operation also includes the sampling and analysis of fuel oil.Daily
Note: When the fuel supply is changed, monitor the viscosity in order to ensure that the viscosity control is operating properly.Perform the maintenance that is recommended by the OEM of the module.
Check the operation of the deaerator system. This system removes air from the fuel. Air that is mixed with the fuel will cause the engine to run rough. In some cases, the engine will stall. Vent any air that is entrained in the fuel.
Check the operation of the viscosity control. Ensure that the fuel is provided to the engine at 10 to 20 cSt. Verify the temperature of the steam jacket. Ensure that the temperature of the fuel to the engine does not exceed 135 °C (275 °F).
Observe the inlet pressure and the outlet pressure of the automatic backflush filter. Record the data.
Slightly open all of the lines to the transducer in order to verify the presence of a flow of heavy fuel oil.Every Week
Verify the operation of the selector valve