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3.0 ENGINE SYSTEMS
3.1 FUEL SYSTEM
3.1.1
Diesel Fuel Specification
All diesel fire pump drivers manufactured by Clarke
are designed, tested and warranted for use only with
No.
2-D
Diesel
Fuel
International D-975 or European Standard EN 590.
Although the above referenced fuel specifications
allow limited amounts of Biodiesel, 100% petroleum
fuel is preferred and should be used whenever possible.
Biodiesel in any amount greater than that allowed by
the above referenced specifications should not be used.
The use of fuels not referenced above, or Biodiesel in
amounts greater than allowed in the above referenced
specifications, may affect performance and reliability,
and may result in a non-warrantable engine condition.
To insure engine reliability and performance, the fuel
provided for Clarke fire pump drivers must be
maintained in a quality condition. Refer to NFPA 25
2014, reprint provided below, for guidance to the
minimum requirements for fuel maintenance for all
Clarke fire pump engine installations.
The following is reprinted from the "NFPA 25 2014
Standard for the Inspection, Testing, and maintenance
of Water-Based Fire Protection Systems," Copyright ©
2013 National Fire Protection Association®. All
Rights Reserved.
8.3.4 Diesel Fuel Testing and Maintenance
8.3.4.1 Diesel fuel shall be tested for
degradation no less than annually.
8.3.4.1.1* Fuel degradation testing shall
comply with ASTM D975-11b Standard
Specification for Diesel Fuel Oils, or ASTM
D6751
-11b
Biodiesel Fuel Blend Stock (B100) for Middle
Distillate Fuels as approved by the engine
manufacturer, using ASTM D 7462 -11
Standard Test Method for Oxidation Stability
of Biodiesel (B100) and Blends of Biodiesel
with
Middle
(Accelerated Method).
8.3.4.2* If diesel fuel is found to be deficient in
the testing required in 8.3.4.1.1, the fuel shall
be reconditioned or replaced, the supply tank
conforming
to
Standard
Specification
Distillate
Petroleum
shall be cleaned internally, and the engine fuel
filter(s) shall be changed.
8.3.4.2.1 After the restoration of the fuel and
tank in 8.3.4.2, the fuel shall be retested each 6
months until experience indicates the fuel can
be stored for a minimum of one year without
degradation beyond that allowed in 8.3.4.1.1
8.3.4.3
ASTM
maintenance systems shall be listed for fire
pump service.
8.3.4.3.1
maintenance systems shall be in accordance
with the manufacturer's recommendations.
8.3.4.3.2
maintenance systems shall be performed at a
minimum annual frequency for any portion of
the system that the manufacturer does not
provide
frequency.
8.3.4.3.3 Fuel additives shall be used and
maintained in accordance with the active fuel
maintenance
recommendations.
A.8.3.4.1.1 Commercial distillate fuel oils used
in modern diesel engines are subject to various
detrimental effects from storage. The origin of
the
techniques, time of year, and geographical
consumption
determination
Naturally occurring gums, waxes, soluble
metallic soaps, water, dirt, blends and
temperature all contribute to the degradation
of the fuel as it is handled and stored. These
effects begin at the time of fuel refinement and
continue
maintenance of stored distillate fuel is critical
for engine operation, efficiency, and longevity.
for
Storage tanks should be kept water-free. Water
contributes to steel tank corrosion and the
development of microbiological growth where
fuel and water interface. This and the metals of
the system provide elements that react with
Fuel
fuel to form certain gels or organic acids,
resulting in clogging of filters and system
corrosion. Scheduled fuel maintenance helps
to reduce fuel degradation. Fuel maintenance
filtration can remove contaminants and water
and maintain fuel conditions to provide
29
When
provided,
Maintenance
of
Maintenance
of
a
recommended
system
crude
oil,
refinement
location
all
of
fuel
blend
until
consumption.
active
fuel
active
fuel
active
fuel
maintenance
manufacturer's
processing
influence
the
formulas.
Proper
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