D7224_13
0 (0 Likes / 0 Dislikes)
Select mode A operation.
Depress push button A
Mark 5 or JET A Mark
10 for mode A operation.
Sequential illumination of
the lettered push-buttons
will cease and the depressed
push-button will stay lit.
The correct syringe drive
speed is set automatically.
Depending on which
syringe is used,
the following procedure
shall be followed.
Remove the plunger from a
new 50 milliliter syringe
and wipe the tip using
a clean, lintless
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 milliliter of fuel,
and place the syringe barrel
on the emulsifier mount,
turning to lock in place.
To mitigate the buildup
of static charge,
only nitrile gloves
are recommended for use
while handling the
syringe barrel.
Flush the barrel of the 50
milliliters aluminum syringe
and wipe the plunger tip with
toluene or clean jet fuel using
a clean, lintless wipe to
remove any residue deposited
from the previous test.
Insert a plug into the exit
hole of the syringe barrel.
Add 50 milliliters plus or
minus 1 milliliter of fuel
to the scribe mark in
the syringe barrel--
see figure 5 of the
written standard--
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 not touching the propeller.
Proper alignment can be verified
by grasping the syringe barrel
and moving it
until the propeller
on the end of the mixer shaft
is free and not touching.
Misalignment can cause
damage to the propeller
by the barrel of the
aluminum syringe,
slow the mixer, causing
a poor emulsion,
and create shavings
from the plastic syringe
to form and collect on
the coalescer filter
material or both, resulting
in erroneous test results.
This alignment
requirement applies
to all instruments manufactured
prior to July 1988, which
have not been serviced
by MC Electronics
Incorporated since that date.
Since July 1988,
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
button as designated
by the annunciator 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.
Initiate the second clean
cycle by sequentially pressing
the reset A and the Start
push-buttons as designated
by the annunciator lights.
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.
See figure 1 of the
written standard.
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 milliliters 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 pipette,
add 50 microliters of distilled
water to the fuel sample
as follows.
Holding the pipette in
hand, give a slight twist
to the plastic tip to
ensure a tight seal.
Pushing the plunger,
immerse the tip just
below the water 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 pipette just
below the fuel surface in
the center of the syringe--
figure 6 of the written
standard-- to ensure the water
drops break away cleanly
and fall to the bottom.
Push and hold in the plunger,
withdraw the pipette,
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
3 of the written standard
is initiated, with the
syringe in place by depressing
the Start push-button.
The automatic program starts
with a read meter indication--
four short tones followed
by a 10-second, full-scale
adjustment period.
During this period,
the arrowed push-button
will illuminate and
can be depressed
to adjust the meter to read
100, figure 8 of the written
standard.
If the adjustment cannot
be completed at this time,
final adjustment may be
accomplished during the second
meter adjust period occurring
later in the test sequence.
The Mark 10 automatic portion
of the applicable test mode
program listed in table
3 of the written standard
is initiated, with the syringe
in place by depressing the Run
push-button.
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 ERR-04 will be displayed.
If for any reason, it is desired
to interrupt the sequence
and start over, pushing
the Reset push-button
on the Mark 5 or the
Mark 10 instrument
will cancel the test in
progress and reset the program
to the beginning of the clean
segment of the test cycle.
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.
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, figure
9 of the written standard.
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
the plunger to the scribe
mark on the plunger,
the 50-millimeter mark.
Use a clean wiper
over the exit hole
to capture the small
amounts of fuel
which may be extruded as foam.
Affix the plastic connector
to the barrel of the aluminum
syringe and attach a
new M-Cell coalescer
to the other end
of the connector,
figure 10 of the
written standard.
The plastic connector
is not required
with a plastic syringe.
To facilitate ease of
operation of the plunger
into the syringe
barrel, wet the tip
of the plunger with
some of the sample fuel.
Place the entire
syringe assembly
into the syringe
drive mechanism,
figure 11 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 the push bar of the
syringe drive mechanism.
Position a waste container
beneath the M-Cell coalescer
to collect the unwanted portion
of the processed fuel sample
during the coalescing period.
Electrically bond
M-Cell coalescers
to the microseparometer
instrument
to prevent buildup of an
electrostatic charge that
could result in ignition
of flammable test fluids.
Each Mark 5 and
Mark 10 instrument
is 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 M-Cell coalescer
and insert the plug into
the chassis ground jack,
figure 11 of the
written standard.
Four short tones will indicate
the second meter adjustment
period.
If required-- Mark 5--
adjust the meter reading to 100.
The syringe drive
mechanism will start down
at the end of the
meter adjust period,
forcing the water
and fuel emulsion
through the M-Cell coalescer.
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 M-Cell coalescer--
figure 12 of the
written standard-- when
the collect sample annunciator
lamp marked C and 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
M-Cell 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.
Align the marks on the vial
and on the control panel
in front of the well, figure
1 of the written standard.
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.
Read the MSEP rating at the
midpoint of the 10-second 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 5.4 and note 1 of
the written standard.