Fil- 2.1.0 No Air Seen But Filact = 1/Isolate Supply Voltages; Fil- 2.3.0 Voltages In Range/Isolate Air Sensor Circuit - Fresenius Medical Care 2008K2 Troubleshooting Manual

FIL- 2.1.0 NO AIR SEEN BUT FILACT = 1 / ISOLATE SUPPLY VOLTAGES
a) Call debug screen 1, TWO (2) voltage checks:
Check #1: 5V Est. (right column): Between 4.7 and 5.3?
Check #2: 12V Est. (right column): Between 11.7 and 12.3?
b) Are BOTH in range AND stable i.e. not changing more than 0.1 per minute?
Yes BOTH 5V and 12V within range AND stable! See procedure number
No One or both NOT in range OR unstable! See parts A) through C) below:
A) To avoid pulling cables loose, GENTLY open the card cage.
B) Behind the card cage, ENSURE the 24V POWER harness has remained plugged in.
C) Proceed to
FIL- 2.3.0 VOLTAGES IN RANGE / ISOLATE AIR SENSOR CIRCUIT
a) FIGURE BELOW, inside the distribution board, unplug the female Air Sensor's connector i.e.
CONNECTOR CAP,
b) Using a flashlight, ENSURE no corrosion or damaged pins inside the distribution board!
Per the Figure next page
c)
Sensor's distribution board position! If CBE equipped, using a flashlight, ENSURE the resistor
covers ALL CBE board pins, especially the top pin!
Parts d and e next page
page 599
, procedure number
th
5
position from the left. If present, DO NOT unplug the CBE board!
, place a resistor plug, from the FOUR-RESISTOR SET into the Air
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
FIL- 2.3.0
P- E.0.0.
(page 421).
th
4
Page 421