D3948_14_10
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Select either mode
A or B operation.
)Refer to table 1 of the written
standard for applicable mode
for a specific fuel.) Only
JP-4 requires mode B operation.
Depress either push
button A or B (MARK 5.),
JET A or JET B
(MARK 10) for mode A
or B operation, respectively.
Sequential illumination of
the push buttons will cease,
and the depressed push
button will stay lit.
The correct syringe drive
speed is set automatically.
Remove the plunger from a
new 50 milliliter syringe
and wipe the tip using
a clean, lint-less
wipe to remove any sheen
caused by excess lubricant.
Insert a plug into the exit
hole of the syringe barrel,
add 50 milliliters, plus or
minus 1 milliliters of fuel,
and place the syringe barrel
on the emulsifier mount,
turning to lock in place.
Ensure that the syringe
barrel is properly
aligned concentrically
with the mixer shaft
and is not touching
the propeller.
To mitigate the buildup
of static charge,
only nitrile gloves
are recommended for use
while handling the
syringe barrel.
Ensure that the syringe
barrel is properly
aligned concentrically
with the mixer shaft.
Proper alignment can be verified
by grasping the syringe barrel
and moving the same
until the propeller
on the end of the mixer shaft
is free and not touching.
Misalignment can
cause plastic shavings
to form and collect on a
coalescer filter material
resulting in erroneous
test results.
This applies to all
instruments manufactured
and those which have not been
serviced by Emcee Electronics
Incorporated since July of 1988.
Since that date
with ASTM approval,
all new instruments and
those returned for service
have had a standoff
installed on the mixer shaft
to prevent the syringe barrel
from coming into contact
with the mixer blades.
Initiate the first clean
cycle by depressing
the START (MARK 5)
or CLEAN 1 (MARK 10)
push button as designated
by the enunciator light.
(Warning: do not operate the
mixer without having a syringe
with fuel in place.
The mixer bearings
depend on the fuel
for lubrication.) The
MARK 10 will illuminate
ERROR ALERT and
display and ERR-05
when the emulsifier speed is
outside of acceptable limits.
At the end of the
first clean cycle,
when the mixer motor stops,
remove the syringe barrel
from the emulsifier,
discard the fuel,
and drain the
syringe thoroughly.
Add 50 milliliters plus or minus
1 milliliters of fresh fuel,
into the syringe, and
place the syringe barrel
on the emulsifier mount
(turn to lock in place).
Visually inspect that the
syringe barrel is properly
aligned concentrically
with the mixer shaft
and is not touching
the propeller.
Initiate the second CLEAN
cycle by subsequently pressing
the RESET, A or B, and the
START push buttons as designated
by the annunciator light.
Initiate the second CLEAN cycle
by pressing the CLEAN 2 push
button.
Add about 15 milliliters to
20 milliliters of the fuel
to be tested into a new vial.
Wipe the outside of the vial
with a clean lintless wiper
and insert the vial into
the turbidimeter well
aligning the black
mark on the vial at 90
degrees from the white line on
the front of the turbidimeter
well.
Rotate the vial until the
black mark on the vial
aligns with the white line on
the front of the turbidimeter
well.
At the end of the
second CLEAN cycle,
when the mixer motor stops,
remove the syringe barrel
from the emulsifier,
discard the fuel,
and drain the
syringe thoroughly.
Add 50 milliliters, plus
or minus 1 milliliter,
of fresh fuel sample
into the syringe.
Handle the syringe
in such a manner as
to minimize warming of the
fuel sample by body heat.
Using a fresh plastic
tip on the hand pipet,
add 50 microliters of distilled
water to the fuel sample
as follows: Holding
the pipet in hand,
give a slight twist
to the plastic tip
to ensure a tight seal,
push in the plunger,
immerse the tip just
below the water's surface,
release the plunger, and
withdraw from the water
slowly to avoid
water drops adhering
to the outside of the tip.
Immerse the tip
of the pipet just
below the fuel surface in
the center of the syringe
(Figure 5 of the
written standard)
to ensure the water
drops break away cleanly
and fall to the bottom,
push and hold the plunger,
withdraw the pipet, and
release the plunger.
Place the syringe barrel
on the emulsifier mount,
turning to lock in place.
The MARK 5 automatic portion
of the applicable test mode
program listed in Table
2 of the written standard
is initiated, with
the syringe in place
by depressing the START
push button (see figure
1 of the written standard).
If for any reason it is desired
to interrupt the sequence
and start over, the
RESET push button
will cancel the test in
progress and reset the program
to the beginning of the CLEAN
segment of the test cycle.
The automatic program starts
with a read meter indicator
(four short tones) followed by a
10-second full-scale adjustment
period.
During this period, the
ARROWED push buttons
will illuminate and
can be depressed
to adjust the meter to read
100 (figure 6 of the written
standard).
If the adjustment cannot
be completed at this time,
final adjustment can be
accomplished during the second
meter adjust period occurring
later in the test sequence.
After the full scale
adjustment period,
the mixer motor activates
and the emulsion process
is initiated.
A few drops of fuel may seep
from the hole in the emulsifier
head during the high-speed
mixing operation.
This should not affect
the test results.
The Mark 10 automatic portion
of the applicable test mode
program listed in Table
2 of the written standard
is initiated, with the syringe
in place by depressing the RUN
pushbutton.
The automatic program starts
with a read meter indication
(four short tones)
followed by a 2-second
to 30-second adjustment period.
During this period,
the turbidimeter
will automatically
adjust to 100.
If the adjustment cannot
be completed at this time,
the Error Alert will illuminate,
and an ERR-04 will be
displayed.
After the full-scale
adjustment period,
the mixer motor (on both
the Mark 5 and Mark 10)
activates and the emulsion
process is initiated.
When the mixer stops
(after emulsification),
remove the syringe barrel
from the emulsifier
and partially insert
the plunger to seal
the open end of the syringe.
Invert the syringe (exit
hole up), remove the plug,
and exhaust the entrapped
air in the syringe barrel
without significant fuel loss
by carefully inserting plunger
to the 50 milliliter mark.
(Use a clean wipe
over the exit hole
to capture the small
amounts of fuel,
which may be extruded as foam).
Affix a new Alumicel
coalescer to the end
of the syringe barrel.
Place the entire
syringe assembly
into the syringe drive mechanism
(Figure 7 of the written
standard).
To minimize the effective
plunger resistance (drag)
in the syringe barrel, align
the syringe assembly vertically
in the syringe drive mechanism
with the end of the syringe
plunger parallel with push bar
of the syringe drive mechanism.
Position a waste container
beneath the Alumicel coalescer
to collect the unwanted portion
of the processed fuel sample
during the coalescing period.
Electrically bond
Alumicel coalescer
to the Micro-Separometer
to prevent buildup
of an electrostatic charge
that could result in ignition
of flammable test fluids.
Both the Mark 5 and
Mark 10 instruments
are furnished with
a ground lead that
has an alligator clip on one end
and a banana plug on the other.
Fasten the alligator clip
to the Alumicel coalescer
and insert the plug in the
chassis ground jack (Figure
7 of the written standard).
Other suitable
grounding methods may
be used for previous models.
Four short tones will indicate
the second meter adjusts
period.
If required (Mark
5), the operator
should adjust the
meter reading to 100.
The syringe drive
mechanism will start down
at the end of the
meter-adjust period forcing
the water/fuel emulsion
through the Alumicel coalescer
(Figure 7 of the
written standard).
During this operation, remove
the vial from the turbidimeter
well and discard the fuel.
Collect the last 15 milliliters
of fuel sample being processed
from the Alumicel coalescer
(Figure 8 of the written
standard), when the
collect sample annunciator
lamp (marked C/S)
illuminates and a pulse tone
of short duration sounds.
To lessen the amount of air
introduced into the fuel
during this operation, position
the vial at a slight angle
and allow the fuel to flow
down the inner surface.
Remove the vial just prior to
when the last amount of sample
is expelled from the
Alumicel coalescer.
Wipe the outside of the vial
with a clean, lintless wiper
to remove any
fingerprints and fuel.
Place the sample vial
into the turbidimeter well
aligning the marks on the
vial and on the control
panel in front of the well.
At the end of the
settling time (1 minute),
a steady (4 second
duration) tone
will alert the operator that
the meter is about to activate.
At the end of the
tone, the METER
will automatically activate
for approximately 10 seconds.
MSEP are read at the midpoint
of the 10 seconds meter read
cycle indicated by a
short 1-second tone.
The Mark 10 stores the
reading until another test
is performed.
Numerical values obtained
outside the measurement range
from 50 to 100 are
undefined and invalid
(see 5.2 of the
written standard).