T- 3.0.9 Meter Temperature Reaches 80 Degrees C/Isolate Display - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 3.0.9 METER TEMPERATURE REACHES 80° C / ISOLATE DISPLAY
ENSURING the meter's reading maintains at 80° C or more, TWO (2) possible scenarios:
1)
IF (and ONLY if) the screen's [Temperature] window is 80° C or more: The temperature problem
is no longer occurring!
2) IF the screen's [Temperature] window is NOT 80° C or more: See parts a THROUGH h below:
To avoid damage, turn the machine OFF!
a)
b) One of the listed components (see COMPONENT LIST below) may be bad. Swap in one, starting
with NTC #3, then continue through parts b – h to test the new component.
COMPONENT LIST: 1) NTC #3
1
To LOCATE NTC #3 refer to
2
It is necessary to calibrate Temperature Control AND Cond Cells before testing these
components!
c) Return to HEAT DISINFECT without the Temperature meter attached for now.
IMPORTANT!
d)
to part e!
e) Connect the Temperature meter to the dialysate lines as previously described! NOTE: If necessary
refer to procedures
f) ENSURE the flow indicator's 'bob' is moving up and down in the sight tube!
g) Allow up to thirty five (35) minutes OR until if the meter's reading achieves 80° C or more before
continuing to part h!
h) Based on the external meter reading, TWO (2) possible scenarios:
1) IF (and ONLY if) the meter does NOT reach 80° C or does NOT maintain at 80° C or
more: Return to (ABOVE) procedure number
2) IF the meter reaches AND maintains 80° C or more, TWO (2) possible scenarios i or ii:
i) IF (and ONLY if) the screen's [Temperature] display reaches 80° C or more: The new
component fixed the problem!
ii) IF the [Temperature] display does NOT reach 80° C: Repeat procedure number
(page 288) parts a THROUGH h until the [Temperature] display does reach 80° C!
1
; 2) Sensor Board
Figure 42
Allow the screen's [Remaining Prerinse Time] window = 0:00 before continuing
T- 3.0.4 (page 285) AND
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
2
; 3) Functional Board
(page 218)
T- 3.0.5 (page 285).
T- 3.0.6 (page 286).
2
; 4) Motherboard
T- 3.0.9
Page 288