Fresenius Medical Care 2008T Troubleshooting Manual page 389

STEP #3:
Watch the external meter for thirty (30) seconds. Its reading MUST BE stable i.e. does NOT
change more than +/- 0.15 mS?
Yes Conductivity is stable! Continue to STEP #4.
a) Return to Dialysis Program ("Select Program" → 'Dialysis' → 'Enter').
No
b) Proceed to
STEP #4:
Is the screen's Frequency window between ten-thousand (10000) and twelve-thousand
(12000) Hz (Hertz)?
Yes Frequency between 10000 and 12000 Hz! Continue to STEP #5.
No Frequency is NOT between 10000 and 12000 Hz! Perform parts a AND b below:
STEP #5:
If Cond Cell #7's reading stabilizes, "5. Conductivity value is stable...." appears and the
[Conductivity] data box turns pale yellow / white?
page 380
, procedure number
a) Figure below, trace Cond Cell #7's cable to ENSURE it plugs into the
Distribution board PROPERLY. If not, this is the problem!
b) Read before performing! One at a time, swap in the listed components (see
Component List below). with known good and in between repeat (ABOVE)
procedure number CO- 6.2.0
12000 Hz indicating the last component swapped in is bad.
COMPONENT LIST:
1) Conductivity Cell #7; 2) Sensor Board cable; 3) Functional Board;
4) Distribution board; 5) Motherboard
2008T Troubleshooting Guide
P/N 490292 Rev. A
CO- 5.0.0.
(page 384) until Frequency is between 10000 and
Page 385