T- 1.8.5 Incoming Water More Than 20.0 Degrees C/Troubleshoot Low Temperature; T- 1.8.6 Reattempt Temp Control Calibration - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 1.8.5 INCOMING WATER MORE THAN 20.0 ° C / TROUBLESHOOT LOW TEMPERATURE
To avoid damage turn the machine OFF!
a)
b) Open the card cage and reseat the sensor, Power Logic and Functional Boards!
c) See procedure number

T- 1.8.6 REATTEMPT TEMP CONTROL CALIBRATION

a) Return to Service Mode → Calibrate Sensors → Temp Control.
b) 'Sharply' press 'CONFIRM' TWICE to turn the screen's [TEMP DAC] data box pale yellow/white.
c) Select [TEMP DAC], it turns bright yellow.
d) Set [TEMP DAC] to "170".
e) Press 'CONFIRM'. [TEMP DAC] MUST return to pale yellow / white i.e. NOT gray.
f) ENSURING flow through the external indicator, allow up to six (6) minutes OR until if the external meter
reaches 35.5° C or more?
Yes 35.5° C or more! Proceed to
No Remains less than 35.5° C! Perform parts a AND b below:
To prevent damage, turn the machine OFF!
a)
b) Read before performing! Swap in the listed components (see COMPONENT LIST below),
one at a time, with known good, then in between, repeat procedure number
262) to test each new component until the meter's temperature is more than 35.5° C!
COMPONENT LIST: 1) NTC #2
4) Actuator-Test Board; 5) Functional Board
board (located inside the power supply); 8) Distribution board; 9) Motherboard.
1
To LOCATE NTC #2, refer to Figure 42 (page 218)
2
To LOCATE the board, refer to
3
To prevent "Cond Offset Failure", place the machine into T and C Mode (refer to
OPERATING MODES
T- 1.8.6 (page 262).
page 306
1
; 2) Power Logic Board; 3) Sensor Board
Figure 4A
(page Error! Bookmark not defined.))
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
, procedure number T- 7.2.2.
2,3
6) Sensor Board cable; 7) Power Control
(page 9)
T- 1.8.6 (page
2,3
,
Page 262