Nugen S10KS, Operator'S Maintenance Manual

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OPERATOR & MAINTENANCE MANUAL
PAGE ‐ 40
and the fuel tank generates a differential pressure, the differential pressure will affect the
work of the engine.
When the fuel tank is above the pump, correct fuel return may become an issue, and the
tubing will have to be able to withstand a positive pressure. If the differential pressure is too
large, fuel leaks may become a concern.
When the fuel tank is below the pump, the fuel supply may become an issue, and the tubing
will have to be able to withstand a negative pressure. If the differential pressure is too large,
fuel supply may become a concern.
Fuel Filter and Fuel/Water Separator
The fuel filter located between the tank and the
injection pump prevents foreign matter from
entering the injection pump. A standard filter
uses a paper element (filtration diameter less
than 15µ). Normally filter elements or cartridges
must be changed every 400 hours. Air trapped in
the filter is purged by the vent plug.
Fuel ‐ water separator is a device designed to
separate gross amounts of fuel and suspended
solids from the wastewater effluents of fuel
refineries, petrochemical plants, chemical plants,
natural gas processing plants and other
industrial sources.
Three ‐ way valves
Valves used to switch between the base
tank and a remote tank. Normally, the
three ‐ way valves are open to the base tank.
When a remote tank is used simply open
both of the valves to allow connection to
the remote tank. The figure shown below
shows the three ‐ way valves in the default
location connected to the base tank.
4.7.2 Lubrication system
All moving parts of the engine must be lubricated to function correctly. For this purpose, the
lubricating oil circulating through the engine has a number of functions. In addition to
reducing friction, the oil cools the engine, controls expansion and dispersion of bearing areas,
provides a sealing action, prevents rusting, seals out dust, and purifies products generated in
the cylinders by incomplete combustion.