Fresenius Medical Care 2008K2, Troubleshooting Manual

Page: 265 / 676

2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Page 261
T- 1.8.2 VERIFY TEMERATURE CONTROL
This is NOT a routine Temperature calibration. Follow the procedure exactly to avoid error!
a) Install a Temperature meter (° C) in the dialysate lines and!
Figure right, flow through the meter MUST be
bottom to top!
b)
CLOSE THE SHUNT DOOR!
c) From the Service menu s
elect Calibrate Sensors → Temp Control.
d) ‘Sharply’ press ‘CONFIRM’ TWICE to turn the screen’s [TEMP
DAC] data box pale yellow / white.
e) Select [TEMP DAC] to turn it bright yellow
f) Set [TEMP DAC] to “180”.
g) ‘Sharply’ press ‘CONFIRM’. [TEMP DAC] MUST remain pale yellow/ white i.e. NOT gray!
h) ENSURING flow through the external indicator AND the Heater Switch is on, allow up to five (5) minutes
OR until the external meter reaches 35.5° C or more?
Yes Meter 35.5° C or more! See procedure number T- 1.8.3 (page 261).
No Meter less than 35.5° C! With [TEMP DAC] pale yellow / white, see procedure number
T- 1.8.4
(page 261).
T- 1.8.3 METER MORE THAN 35.5°C / VERIFY [TEMP DAC]
a) Allowing five (5) minutes after each [TEMP DAC] adjustment, continue the calibration until the external
meter is between 36.9 and 37.1° C.
b) Does [TEMP DAC] have to be set to 190 or more to between 36.9 and 37.1° C?
Yes [TEMP DAC] is 190 or more! See procedure number T- 1.8.4 (page 261).
No [TEMP DAC] less than 190! Proceed to
page 309
, procedure number T- 7.5.0 .
T- 1.8.4 METER LESS THAN 35.5° C / ISOLATE INCOMING WATER TEMPERATURE
If incoming water is less than 20.0° C the machine may not be able to maintain temperature.
a) Using a calibrated temperature meter measure INCOMING WATER from the RO!
b) More than 20.0° C?
Yes More than 20° C! See procedure number T- 1.8.5 (page 262).
No Less than 20.0° C! Incoming water temperature is too low! Once this problem is fixed, most
likely, temperature can be calibrated.