Vectec Fuel and Equipment Catalogue 2013 - page 98

Filtration & Fuel Conditioning
Purefuel Pre-Filter Conditioners
Petroleum diesels typically hold 60ppm of suspended water. At this
level the water is almost insignificant. Provided the fuel is
regularly used and replenished microbial contamination is rarely a
problem. Bio-diesels typically hold up to 25 times more suspended
water than petroleum diesel. The introduction of bio-diesel and
bio-diesel blend fuels in recent years, has greatly increased the
potential for problems. Bio-diesel is a perfect habitat for vigorous
microbial growth.
The time fuel exposed to condensation & leaks, or time in
undisturbed storage before proliferation begins, is dramatically
reduced. Today’s bio-fuels deteriorate much faster than their
petroleum forebears. Colony Forming Units of bacteria grow on the
water-fuel interface becoming heavier until they drop out of the fuel
to the bottom of the tank where bio-films & sludge quickly form.
The bacteria feed on the fuel, but the microbes do not eat ‘all’ of the
fuel. They break down the carbon chains, which reduces the
combustible properties. This leads to poor starting (or failure to start
at all), excessive smoke, reduced power output & blocked filters.
Purefuel Pre-Filter Conditioners
A safe solution for curbing microbial contamination is to pass the
fuel through a PureFuel Pre-Filter Conditioner. This is a natural
solution that instead of killing the microbes, splits up the microbial
colony forming units (CFU’s) stopping them from reforming & allowing
them to pass safely through filters (prolonging filter life) & eventually
being burnt off with the fuel during the normal combustion process.
A PureFuel Pre-Filter Conditioner also contains a powerful magnet
which will remove rust or other metallic particles contained within
fuel being passed through it. To clean the magnets of metallic
contamination simply remove the conditioner from the installation
& blow the contamination off with an air line.
A PureFuel Pre-Filter Conditioner can be installed at any appropriate
point in a fuel distribution network to provide permanent protection
from microbial & metallic contamination.
How PureFuel Pre-Filter Conditioners Work
- The hydrodynamic effect the PureFuel Pre-Filter Conditioners
have on the fuel flow path passing through them causes CFU’s
to break down.
- Allowing them to pass through filters & are consumed by the
engine during combustion.
- A powerful magnet aids the hydrodynamic effect as well as
removing metallic contamination (such as rust) from fuel &
CFU’s being passed through it.
- Re-circulating fuel in a tank or storage system will mean that
microbial & metallic contamination can be kept to a minimum,
see page 100.
Microbial contamination
Blocked foot valve
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