Fresenius Medical Care 2008K Troubleshooting Manual page 137

f) If (and ONLY if) the SENSORS connector is okay, leaving the sensor cable unplugged, place the
machine into Dialysis program (remember to press the 'CONFIRM' key). Ignore all alarms!
g) Call the Home screen. Is Conductivity = 10?
Yes a) IMPORTANT! Turn the machine off.
b) Unplug the sensor cable from the sensor board. Check inside the vacant connector for 'white'
corrosion and damaged male pins. Check both female ends for 'white' corrosion and the
sensor cable for damage.
c) Reconnect the cable at both ends. Attempt the Cond Cells calibration per procedure. If
unsuccessful, replace the sensor cable (see
Cells calibration again. If still unsuccessful the distribution board may be bad.
No a) IMPORTANT! Turn the machine off.
b) Unplug the sensor cable from the sensor board. Check inside the vacant connector for 'white'
corrosion and damaged male pins. Check both female ends for 'white' corrosion and the
sensor cable for damage.
c) Reconnect the cable at both ends.
d) Referring to
at a time, with known good, attempting Cond Cells calibration in between: 1) Converter board
or new-style power logic board (depends on how the machine is equipped); 2) sensor
cable; 3) Sensor board; 4) Actuator board; 5) Function board; 6) Motherboard
CO- 2.0.0 RE-CHECK TEMPERATURE AND TEMPERATURE ALARM
IMPORTANT!
a) From the Home screen, watch Temperature for two minutes. If (and ONLY if)
Temperature is NOT between 35.1 and 38.9° C AND stable (+/- 0.1 °C per minute) proceed to page 92,
SECTION 4 – TEMPERATURE
b) Referring to the Figure (right) is the Temperature window RED?
Yes a) Per procedure number
ASSURE Temperature is set to 37° C.
b) If (and ONLY if) Temperature is between 35.1 and 38.9° C AND is set to 37° C, three
possibilities: 1) Bad actuator board; 2) Bad sensor board; 3) Bad function board.
No See procedure number
CO- 2.0.1 CHECK CONDUCTIVITY ALARM
IMPORTANT!
a) Close the shunt door!
b) Is the Conductivity window RED?
Yes See procedure number
No a) If the Temperature and Conductivity windows are NOT red the Bypass
LED (front panel) should be OFF!
b) See procedure number CO- 2.0.5 (page 136).
CO- 2.0.2 CHECK CONDUCTIVITY / CONDUCTIVITY CELL FREQUENCY (AFREQ)
Call debug screen 5. Is AFREQ less than 1000?
Yes Three possibilities: 1) Bad actuator board; 2) Bad function board; 3) Bad motherboard.
No See procedure number
Figure 4A and NOTE B (page 8), swap the following five listed components, one
PROBLEMS.
CO- 1.0.9
CO- 2.0.1 (page 135).
CO- 2.0.2 (page 135).
CO- 2.0.3 (page 136).
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 5 – Conductivity/ On Line Clearance Problems
Figure 4A, page 8) and attempt Conductivity
(page 132)
Page 135