T- 4.4.0 Check Temp Display Calibration (1); T- 4.4.1 Check Temp Display Calibration (2) - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 4.4.0 CHECK TEMP DISPLAY CALIBRATION (1)

a) Place the machine into Service Mode → Options → Hardware Options.
b) Does the 'Yes' box at 'Temp Comp' have a blue 'X' in it?
Yes Place the 'X' in the "No" box and press 'CONFIRM' (the 'X' turns
blue). Post a note that 'Temp Comp' is off then see procedure
number
No Temp Comp = No! See procedure number

T- 4.4.1 CHECK TEMP DISPLAY CALIBRATION (2)

a) From the Service screen menu → Calibrate Sensors → Temp Control.
b) Press 'CONFIRM' TWICE. The screen's [TEMP DAC] data box turns pale yellow / white.
c) Select [TEMP DAC]. It turns bright yellow and set its value to "20"
d) Press 'CONFIRM'. [TEMP DAC] returns to pale yellow / white.
Set your volt meter to AC voltage (~ V, V
e)
IMPORTANT!
f) Allow the screen's [Monitor Reference] data box drop to 39.0° C or less.
g) Measure again at the distribution board's Heater Connector between the BLUE and BROWN wires.
More than 100.0 volts AC now?
Yes More than 100.0 volts AC! See procedure number
No Less than 10 volts! See parts a THROUGH c below:
a) Select the [TEMP DAC] window and set it to "130"!
b) Save the calibration.
c) Proceed to
T- 4.4.1 (page 293).
page 302
, procedure number
LEFT BLANK INTENTIONALLY
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
T- 4.4.1 (page 293).
)!
AC
T- 4.5.0 (page 294).
T- 7.0.0.
Page 293