2008T Troubleshooting Guide
P/N 490292 Rev. A
CO- 10.0.20 PROBLEM WITH POST DIALYZER TEMP / ISOLATE TEMP SENSOR #44
a) Figure right, from the distribution board, unplug the
11
th
Connector cap from the left. This is
Temperature Sensor NTC #44, “x44, NTC-POST”!
b) Screen 0’s Post Dialyzer Temp MUST be LESS THAN
34.0° C at this time! If NOT, ENSURE Post Dialyzer
Temperature Sensor #44 was unplugged!
c) Using a flashlight, check the vacant “x44” position. If
corrosion or damage is located this may be the
problem!
d) Figure right, install the
6.04 KΩ plug, from the TWO-RESISTOR SET,
into the Post Dialyzer Temp Sensor’s #44 distribution board position, “x44,
NTC-POST”.
e) Is screen 0’s Post Dialyzer Temp between 35.5 and 38.5° C?
Yes Post Temp between 35.5 and 38.5! Proceed to page 420, procedure number CO- 10.0.26.
No Post Temp is NOT between 35.5 and 38.5! See parts a and b below:
a) ENSURE the 6.04 KΩ plug from the TWO-RESISTOR SET is placed properly at
position “x44, NTC-POST”. If NOT, repeat (ABOVE) procedure number CO- 10.0.20
(page 418) AND / OR CONSIDER using the 6.04 KΩ plug from another TWO-RESISTOR
SET.
b) If SURE the plug is placed correctly see procedure number CO- 10.0.22 (page 418).
CO- 10.0.22 POST DIALYZER TEMP IS NOT BETWEEN 35 AND 38°C
a) ENSURE connector labeled #7 (Pre Cond Cell #7) is in position “X7, COND”.
b) Enter Service Mode → Calibrate Sensors → Post Temp Sensor. NOTE! This is a non-routine
troubleshooting procedure! Follow the instructions carefully to avoid error!
c) Press ‘Enter’. The screen says “1. Connect a 6.808 K ohm resistor…”.
d) Per the Figure right, place the
34° C (6.808 KΩ) plug, from the FOUR-
RESISTOR SET into distribution board position, “x44, NTC-POST”.
e) Is the screen’s [Post-Temperature Reference] more than 20?
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