T- 3.0.8 Heater Is Good/Troubleshoot Heat Disinfect 'Actual' Temperature - Fresenius Medical Care 2008K2 Troubleshooting Manual

Yes
No DOES NOT achieve 80° C or more! Either incoming water is extremely cold (less than
12° C) OR you made an error and Heater voltage is NOT more than 100 volts AC OR
the Heater is bad!
T- 3.0.8 HEATER IS GOOD / TROUBLESHOOT HEAT DISINFECT 'ACTUAL' TEMPERATURE
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 #2 then, in between, continue to parts c through h to test the new component.
COMPONENT LIST: 1) NTC #2
5) Motherboard.
1
To LOCATE NTC #2 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) If not already, allow the screen's [Remaining Prerinse Time] window = 0:00 before
continuing to part e!
e) Connect the Temperature meter to the dialysate lines as previously described. NOTE: If necessary refer
to procedures T- 3.0.4
f) ENSURING the flow indicator's 'bob' is moving up and down in the sight tube, check distribution board
Heater Connector heater voltage (more than 100 volts AC) between each component!
g) Allow thirty (30) minutes OR until if the external meter's reading maintains 80° C or more before
continuing to part h!
h) Based on the external meter's reading, TWO (2) possible scenarios:
1)
IF (and ONLY if) achieves 80° C or more: The new component fixed the problem! If a
Functional or Sensor Board was replaced perform all calibrations.
2) IF does NOT reach 80° C: Repeat procedure number
component from the list, one at a time, until the meter achieves 80° C or more. When (and NOT
until) the meter reaches 80° C or more see procedure number
80° C or more! The Heater is good! See procedure number
1
2) Actuator-Test Board; 3) Sensor Board
Figure 42 (page 218)
(page 285) AND T- 3.0.5
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
(page 285).
T- 3.0.8 (page 287) swapping in known good
T- 3.0.9
T- 3.0.8 (page 287).
2
; 4) Functional Board
(page 288).
Page 287
2
;