Fresenius Medical Care 2008K Troubleshooting Manual page 115

T- 3.0.4 CHECK HEATER
a) IMPORTANT! Turn the machine off.
b) Referring to the Figure (right) remove the
screws and rotate the heater 180°. Tighten
the bracket screws evenly. The heater
MUST be positioned perfectly vertical to
maintain proper flow geometry around it.
c) ASSURE incoming water (RO source)
temperature is greater than 10° C (50° F).
d) See procedure number
T- 3.0.5 CHECK TEMPERATURE
a) Return both rear panels however there is no need to screw them in yet.
b) IMPORTANT! Turn the HEATER switch ON!
c) Connect an external Temperature meter to the dialysate lines.
CAUTION! The quick connectors may be hot!
d) Open the shunt door. Referring to the Figure (right),
reach into the opening, under the door, and push and
hold down ALL THREE switches.
e) Activate the screen's HEAT DISINFECT button. If all three
switches are held the Heat Disinfect program starts.
f) Release the switches but do NOT shut the door! The
"Cover Is Open" message appears but Heat Disinfect
Program continues!
IMPORTANT!
g) If (and ONLY if) using a NEO-1* meter refer to the
h) Allow up to 25 minutes for the meter's ('actual') Temperature reading to stabilize.
* NEO-1 meters are not linear at high temperatures. If possible, do NOT use a NEO-1 for this
check. Other meters read temperature directly!
i) Does the meter's Temperature reading reach between 80 and 90° C?
Yes Calibrate Temp Control per procedure then return to Heat Disinfect. If the problem still
reoccurs four possibilities: 1) Bad NTC #3 (see
3) Bad function board; 4) Bad motherboard.
No See procedure number
T- 3.0.5 (page 113).
T- 3.0.6
Table I - NEO-1 Meter Temperature Conversion
NEO-1 Display
67.0° C
68.5° C
70.0° C
71.5° C
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Table I
Figure 42, page 94); 2) Bad sensor board;
(page 114).
Actual Temperature
76 +/- 4° C
80 +/- 4° C
84 +/- 4° C
88 +/- 4° C
Section 4 – Temperature Problems
(page 113).
Page 113