Co- 10.0.66 Isolate Pre-Sensors Stability - Fresenius Medical Care 2008K2 Troubleshooting Manual

b) Return Post Dialyzer Cond Cell #13 connector to distribution board position labeled "x13,
COND-POS".
c) From debug screen 0, ENSURE Post Dialyzer Temp reads more than 35° C AND Post Dialyzer
Cond MUST more than 10.000.
d) See procedure number
CO- 10.0.66 ISOLATE PRE SENSORS STABILITY
a) Figure right, remove Pre the Dialyzer Temp Sensor (NTC
#3's) connector from the
the left, "MON-NTC".
b) Using a flashlight, CAREFULLY check the vacant "x3"
distribution board position for corrosion and/or damaged
pins. If damage is located this may be the problem!
c) Avoiding vacant position #4, place the
Pre Dialyzer Temp Sensor's NTC #3 distribution board position "x3, MON-NTC.
d) Remove Pre Dialyzer Cond Cell #7's connector from distribution board position "x7, COND".
e) Using a flashlight, CAREFULLY check the vacant "x7" position for corrosion and/or damaged pins. If
damage is located this may be the problem!
Leaving the 6.04 KΩ plug installed, place the
f)
SET
, into the Pre Dialyzer Cond Cell #7's distribution board position, "x7, COND".
g) From debug screen 5, TWO (2) checks then proceed according to the TWO (2) possible scenarios
after check #2.
CHECK #1 (TPRE):
left, at top) for exactly one minute noting its highest and lowest values. Subtract the
lowest value seen from the highest. Two (2) or less = GOOD! MORE THAN 2 = BAD.
CHECK #2 (CPRE):
exactly one minute noting its highest and lowest values Subtract the lowest value
seen from the highest. Eight (8) or less = GOOD! MORE THAN 8 = BAD.
IF (AND ONLY IF) TPRE AND / OR CPRE are BAD:
1)
procedure number
IF (and ONLY if) TPRE AND CPRE are GOOD:
2)
a) Return Pre Dialyzer Temp Sensor NTC #3s connector to distribution board position "x3, MON-
NTC". From debug screen 0, ENSURE Pre Dialyzer Temp reads more than 35° C.
b) Return Pre Dialyzer Cond Cell #7 connector to distribution board position "x7, COND". From
debug screen 0, ENSURE Pre Dialyzer Cond reads more than 10.0.
c) See procedure number
CO- 10.0.66 (page 392).
nd
2
distribution board position from
6.04 KΩ
274 Ω
WITHOUT LOOKING AWAY, watch TPRE (3
th
Watch CPRE (4 column from right, second box down) for
CO- 11.0.00.
CO- 10.0.705 (page 393).
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
TWO-RESISTOR SET
plug, from the
resistor plug, from the
rd
column from
Proceed to
See parts a through c below.
, into the
TWO-RESISTOR
page 394
,
Page 392