FALEX 400 Operation And Maintenance Manual page 27

NoTe: According to D3241 aeration must take place
within 1 hour prior to heating the sample. If the operator
chooses to skip aeration a warning box will appear
reminding of the 1 hour requirement.
Be sure to properly assemble the Falex 400
before proceeding.
Begin the aeration process by pressing the 'Start' button.
An aeration timer begins counting the 6 minutes that the
aeration pump is on. Bubbles will appear in the sample
beaker from the aeration line filter. Aeration rate is at about
1.5 L/minute when the ball is set in the middle of the green
area on the aeration flow meter on the front of the unit.
Adjust the flow meter as required
tion, the sample temperature should be held between
15–32ºC and the aeration humidity to no greater than
21%. Should the sample temperature or humidity be out-
side of this range the test will abort. The current values
for temperature and humidity appear in the center Data
box on the screen. The Digital Points then displays status
within the system during aeration. The 'Status' button in
the lower left corner opens a pictorial screen of the F400
showing live values of critical measurements
5. The test will automatically begin after the 6-minute
fuel aeration. As the sample is being aerated,
the previous runs fuel is purged from all lines
and valves.
Aeration Coolant Meters
Figure 39
. During aera-
[Figure 39]
.
[Figure 40]
Aeration
Flow Meter
Coolant
Flow Meter
Section 3: Software Operation
Status Screen
Figure 40
6. During the aeration, inspect all fittings in the
sample test area for leaks.
7. If leaks are found, re-tighten using fingers only.
8. Test Screens: These screens remain open the
duration of a test. The Pressure box in the lower
right indicates the system pressure and the DP
value. Tests run at 3.45MPa+/- 10%. Once system
pressure is reached the heater will commence.
It is recommended that the operator watch for
leaks during this pressurization. When leaks
are visible, abort the test, tighten all fittings and
restart the test. Should the unit not reach required
pressure within 180 seconds the system will
abort. After the required pressure is reached the
heater tube temperature will increase. A system
abort will automatically happen if the heater tube
temperature set point is not reached within 300
seconds after the 3.45MPa pressure is reached.
Likewise, if the temperature is not held within
two degrees of the set point a system abort will
be triggered. When the set point temperature is
reached (Indicated in the Temperature box on the
right) the test run timer starts.
9. The bus bars are cooled once heating of the
tube begins. The coolant flow meter should be
adjusted to 10 gal/hr flow (middle of the green
area) . The bar at the bottom of the screen
[Figure 39]
gives graphical feedback of the test run time
. The "+" button on the top right will open
[Figure 41a]
a graph with the DP, system pressure and heater
tube temperature overlapping
26
.
[Figure 41b]