D6824_9
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Measure the temperature--
see 6.3.3 of the written
standard-- of the fuel in
the transfer container--
see 7.2 of the
written standard--
and if necessary adjust to
15 to 25 degrees Celsius.
Shake the sample or
transfer container--
see 7.2 of the written
standard-- vigorously
for approximately 2 minutes.
Rinse the fuel
reservoir container--
see 6.1.5 of the written
standard-- with some
of the product to be tested.
Place 450 plus or minus 5
milliliters of the sample
into the fuel reservoir.
See 6.1.5 of the
written standard.
Check that the
temperature is still
within the range from 15
to 25 degrees Celsius.
Record the actual temperature.
If any undissolved
water is visually
apparent in the
fuel at this time,
as determined by test methods
D4176 or D4860 or both,
the test shall be abandoned
and the presence of water
shall be reported.
Place the end of the
flexible inner tubing
with the plastic coupler--
see 6.1.10 of the written
standard-- into the collection
container.
See 6.1.6 of the
written standard.
Press and release the
Purge push button.
Approximately 40
milliliters will
be drawn from the fuel reservoir
through the flexible inner
tubing and discharged into
the collection container,
thus purging the air and the
residual fuel from the system.
The fuel flow will
automatically cease at the end
of the purge cycle, 2 minutes.
After the purge cycle, insert
the plastic coupler affixed
to the flexible inner tubing
into a pre-calibrated Fcell
filter--
see 6.2 of the
written standard--
and place the filter into
the mouth of the collection
container.
Press and release
the Test push button.
The peristaltic pump activates,
drawing the fuel from the fuel
reservoir and extruding
it through the filter
into the collection flask.
During the filtration
period, the pressure
is constantly displayed
along with the amount
of sample processed.
The test will automatically
stop when one of the following
occurs.
The entire sample,
300 milliliters,
is discharged prior to
reaching 104 kilopascals, 15
pounds per square inch gauge.
The total volume, V--
V equals 300 millimeters--
the final pressure P--
F-P less than 15 pounds
per square inch gauge
at 300 millimeters, and
F-QF will be displayed.
The entire sample,
300 millimeters,
has not been discharged, and the
maximum allowable pressure, 104
kilopascals--
15 pounds per
square inch gauge--
has been reached.
The volume, V--
V at 15 pounds per
square inch gauge--
discharged at 104 kilopascals,
15 pounds per square inch
gauge.
The final pressure P,
F-P equals 15 pounds
per square inch gauge.
And the F-QF will be displayed.
After completion
of the test, prior
to disconnecting
the Fcell filter
from the flexible inner tubing,
release the lever on the pump
to depressurize the system.
Disconnect the Fcell filter
from the flexible inner tubing
and discard the unit.
Insert the flexible inner tubing
into the collection container--
6.1.6 of the written standard--
and drain all of the residual
fuel from the fuel
reservoir container--
6.1.5 of the written standard--
and flexible inner tubing,
including the section connected
to the pressure transducer.