System Pressure; Factors - FALEX 400 Operation And Maintenance Manual

Section 7: Calibration
41
7. Open the Bypass valve by pushing the Bypass
Valve button on the screen until it appears green.
8. Close the System Vent by pushing the System
Vent button on the screen until it appears red.
9. Attach the calibration bottle to the DP- port on the
Falex 400.
10. Set and leave the bottle on the top of the machine.
11. Open the DP- Vent on the screen by pressing the
DP- button until it turns green.
12. Wait until the DP value on the screen holds steady
(approximately 50 ml have run out of the bottle
and into the outlet beaker).
13. Close the Bypass Valve on the screen by pressing
the Bypass Valve button until it turns red.
14. Close the DP- vent on the screen by pressing the
DP- button until it turns red.
15. Leave the bottle on top of the Falex 400.
16. Remove the nut from the DP+ port and set it aside.
17. Disconnect the bottle from the DP- port and attach
the bottle to the DP+ port. DO NOT CAP THE
DP- PORT.
18. Open the DP+ vent on the screen by pressing the
DP+ button turning it green.
19. Wait until the DP value on the screen holds steady
(approximately 50 ml have run out of the bottle
and into the outlet beaker)
20. Close the DP+ vent by pushing the button on the
screen turning it red.
21. Bring the bottle down from the top of the machine
and align the fluid level in the bottle with the center
of the DP+ port alignment line.
22. Hold the DP calibration bottle steady so the fluid
level is level. Hold the bottle in this position for
about 1-5 minutes until the DP value on the graph
remains constant.
23. Press the Zero button on the screen without
moving the bottle. The Zero offset value on
the screen should now show 0 and show the
today's date.
24. Raise the fluid level in the bottle to the 400mm
DP calibration high alignment line on the machine
front (near the top right of the Drierite cover).
25. The DP reading on the graph should be 25mmHG
+/- 2.5.
26. The fluid bottle may now be set down on the
bench top.
.
[Figure 68]
27. Press the Done button on the screen.
28. Return to the Main screen.
29. Attach nuts to the DP+ and DP- bulkheads or
reattach the heater tube assembly. Leaving the
bulkhead fitting open to atmosphere will cause
fuel to drain from the unit which may cause pump
damage if the unit is run without proper priming
and purging.
DP Calibration Screen
Figure 68

7.3 System Pressure

This calibration is to be factory trained personnel only.

7.4 Factors

'Factors' displays the most recent values and date for the
last calibration of the heater tube thermocouple, differen-
tial pressure and system pressure
Calibration Factors Screen
Figure 69
Live DP
Reading
.
[Figure 69]