Fresenius Medical Care 2008K Troubleshooting Manual page 147

e) Check the top and bottom of the Block/Chamber. External water leak located?
Yes Proceed to page 214, procedure number
No a) Return the float connector to distribution board position "FLOAT-SW"
b) IMPORTANT! Unclamp the vent tubing.
c) The Troubleshooting Guide is unable to locate an immediate problem. See procedure
number CO- 6.0.0 (page 145).
CO- 6.0.0 CALIBRATE CONDUCTIVITY (COND CELLS)
WARNING! Before entering Service Mode it is critical that the machine is NOT issuing a "No
Water" alarm, loading pressure is good, and the machine is TOTALLY free Flow Errors (debug
screen 1, Flow Error = 0 (constant). Alarm banners do NOT occur in Service mode!
This is NOT a routine Conductivity Cells Calibration! Follow these procedures carefully to avoid
error!
a) Referring to the Figure (right), IMPORTANT!
ASSURE the connector labeled #3 (NTC #3) is
nd
2
plugged into the
from the left).
b) IMPORTANT! ASSURE the connector labeled #7
(conductivity cell #7) is plugged into the
distribution board position from the labeled "COND".
c) Assure the air sensor connector, labeled #6, is
plugged into distribution board position "AIR-SEN". A
resistor plug may have been placed here previously.
d) Using fresh concentrate, enter Service Mode
NOTE! If using a NEO-1 meter attach its ground strap to the machines redundant ground (see
Figure 6, page 13)
e) Follow the screen's instructions through step #4, "Waiting until the Conductivity value is stable".
f) Allow up to eight minutes. The [Conductivity] data box remains gray until the pre-dialyzer Conductivity
Cell #7 stabilizes causing step #5, "Conductivity value is stable...." to appear and the [Conductivity]
data box turns from gray to yellow.
1) If (and ONLY if) the external meter's Temperature is NOT between 35.5 and 38.5° C AND
remaining stable (+/-
2) The external meter's Conductivity reading MUST stabilize to a 'normal' value. Compare to other
machines using the same concentrate that you are calibrating with. Do NOT enter abnormally
low or high conductivities! If (and ONLY if) Conductivity is too high or too low place the machine
into Dialysis program (remember to press the 'CONFIRM' key) then
3) If (and ONLY if) the external meter's Conductivity reading varies greater than +/-
minute see procedure number
4) If (and ONLY if) the external meter's Conductivity is stable but the screen's [Conductivity] data box
is unstable (varies greater than +/-
be a problem with PRE-DIALYZER Conductivity cell #7 then see procedure number
(page 146).
g) Select the [Conductivity] data box (it turns bright yellow) and enter the external meter's reading.
h) Press the 'CONFIRM' key (the screen changes) then see procedure number
distribution board position
th
6
IMPORTANT!
0.15
° C per minute) see procedure number
CO- 6.0.1
0.15
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 5 – Conductivity/ On Line Clearance Problems
DAIR- 7.0.0.
Calibrate Sensors
After allowing six full minutes (four checks):
(page 146).
mS per minute) record (or you may forget) that there may
Cond Cells.
CO- 6.0.1 (page 146).
CO- 8.0.0 (page 149).
0.15
mS per
CO- 7.0.0
CO- 6.0.2 (page 146).
Page 145