T- 1.5.53 [Temperature] Is Stable - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 1.5.53 [TEMPERATURE] IS STABLE

WITHOUT LOOKING AWAY (to avoid damage), watch the external meter for up to twenty-five (25) minutes
or until if it exceeds 95° C! TWO (2) possible scenarios:
1)
IF (and ONLY if) the meter exceeds 95° C: See procedure number
2)
IF the meter does NOT exceed 95° C: Perform parts A THROUGH I below as prompted:
a) Remove the 80° C resistor plug from the distribution board.
b) Turn the machine off and replace
board position from the left, "MON-NTC". * To LOCATE NTC #3 refer to
c) Read before performing! Return to (ABOVE) procedure number
new NTC #3 fixed the problem. If (and ONLY if) you return to procedure number T- 1.5.53 continue
to part D.
d) Turn the machine off and swap in a known good Sensor Board* then continue to part E. *To
LOCATE the board refer to
e) Perform TWO (2) calibrations: Cal 1) Temp Control; Cal 2) Cond Cells. After the calibrations
continue to part F.
f) Read before performing! Return to (ABOVE) procedure number
new Sensor board fixed the problem. If (and ONLY if) you return to procedure number
T- 1.5.53 continue to G.
g) Read before performing! Turn the machine off and swap in a known good Functional Board THEN
see part H.
h) Perform FOUR (4) calibrations: Cal 1) Voltage Detection; Cal 2) Temp Sensor; Cal 3) Temp
Control; Cal 4) Cond Cells. After the calibrations see part I.
i) Return to (ABOVE) procedure number
problem.
NTC #3
* with a known good, and plug it into the
Figure 4A (page 9).
T- 1.5.1 (page 247) to see if the new board fixed the
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
T- 1.5.677 (page 256).
nd
2
distribution
Figure 42 (page 218)
T- 1.5.1 (page 247) to see if the
T- 1.5.1 (page 247) to see if the
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