|When should I change the AquaShield filter, or
how long will an AquaShield filter last?
- FSI International recommends that a customer change filters
at intervals recommended by the equipment manufacturer. However,
poor quality of fuel may signify the need to change filters more
often. If a customer has 5% water in any type system, he will
experience very short filter life. A customer using AquaShield
filters as primary and secondary filters, and receiving fuel from
a dispenser outfitted with an AquaShield filter, will experience
a longer life from his/her on board filters because the dispenser
will be delivering clean, dry fuel to the tank of the equipment
|Will the AquaShield filter remove additives from
fuels or lubricating systems?
- No. The AquaShield filter does not remove any additives from
the product being filtered.
|Will the use of an AquaShield filter void my warranty?
- No. A federal trade act called the Magnusson Moss Act (USA)
states that a manufacturer cannot require you to use a specific
filter unless that filter is offered to the end user free of charge.
A copy of this federal trade act is available from FSI International.
|Will the AquaShield filter freeze in subfreezing
- No! FSI International has designed its filters to reduce the
fuel flow when pleats swell. The operator will be aware of loss
of power, alerting the operator to change fuel filters. Note:
AquaShield filters will not allow enough water contamination to
enter the injector system to cause any water damage even if the
filter is saturated.
|Is there any difference in the filter media in
an AquaShield filter spin-on fuel (Model "F") or hydraulic filter
- No. Both filters have AquaShield's special water removing media,
as well as the standard 10 micron nominal particulate protection.
The difference is in the tap size (see AquaShield Specification
Chart); the AS405H10 and AS409H10 come only with the inner gasket.
|Why is a dispenser pump filter important (AquaShield
- This filter removes contamination such as water, dirt and bacteria
from the fuel as it is pumped from the fuel storage tank. This
pre-cleaning of fuel will help extend the service life of the
primary and secondary filters installed on the engine.
|If I cut an AquaShield filter open after an "in
use" period, will I see water inside the filter can?
- This really depends on how long the filter has been sitting
before you cut it open. It is possible that some water could settle
out of the fuel into the bottom of the filter can if the fuel
is very contaminated and the equipment has been sitting for some
time. Normally, you would not see free water. You may see gelled
water on the outside of the pleats if the fuel flow velocity has
been slow. If the flow velocity is high, then the entrapped water
may be harder to observe as it will tend to be buried deeper into
the pleated media.
|Why is water contamination in diesel fuel systems
- A diesel fuel injection system is made of precision components
with extremely close tolerances that rely completely on the diesel
fuel for lubrication. Water entering the fuel injection system
causes all manner of problems, both to the fuel system as well
as to the engine itself. Scored pump surfaces, destruction of
the injector nozzle, premature valve wear and cracked cylinder
liners: these are just a few of the problems that result when
water is present. Water combined with sulphur (that can be as
high as 0.5% in today's fuel) form a corrosive acid that not only
cause wear to the fuel injection system, but also find their way
into the lube oil resulting in premature bearing wear.
|How does water contamination occur in diesel fuel?
- Water occurs in diesel fuel when warm moist air condenses as
temperatures change. An example is a truck on the road. As the
fuel tank empties the incoming hot return line, fuel flow cools
down and condensation occurs. Of course, contamination can occur
from the introduction of water directly into the fluid. Faulty
storage tanks, poor housekeeping procedures, or possible sabotage
might all contribute to the contamination problem.
|What contaminants does diesel fuel frequently contain?
|How does water enter a storage or a delivery system?
- Inconsistency in diesel fuel handling contributes to water in
fuel. Water can enter underground tanks through deteriorated tank
walls or down the filler tubes. Changes in atmosphere temperature
can cause condensation to form tank walls and accumulate in the
bottom of the tank. Condensation also occurs when warm fuel is
returned to the fuel tank.
|In what application can the AquaShield portable
filter buggy (Model AS-P100) be used?
- To filter reservoirs of various hydrocarbon products such as
hydraulic fluids, turbine oil, quench oils, cutting oils, gear
oils, diesel fuels, solvents and even coolants such as non-water-based
antifreeze. The portable buggy can also be used to transfer new
product from a drum to a reservoir, or vice versa.