T- 1.3.40 Isolate Temperature Control; T- 1.3.60 Isolate Ntc #2 - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 1.3.40 ISOLATE TEMPERATURE CONTROL

a) Figure right, place the
FOUR-RESISTOR
plug, from the
st
SET 1
into the distribution board
position from the left, "CON-NTC".
Set your CALIBRATED volt meter to AC
b)
voltage (~ V, V
AC
Turn the HEATER Switch ON!
c)
d) Figure right, measure at the distribution board's Heater
Connector, between the BLUE and BROWN wires. TWO
(2) possible scenarios:
1)
IF (and ONLY if) 100.0 volts AC or more: Leaving
the 90° C plug installed, proceed to
procedure number
2) IF LESS THAN 10.0 volts AC: ENSURING the HEATER Switch was on AND the meter was set to
AC voltage
prior to measuring, see procedure number

T- 1.3.60 ISOLATE NTC #2

a) Call the Home screen to see the machine's [Temperature] display.
o
b) Remove the 90 C plug from distribution board position, "CON-NTC".
c) LEAVING "CON-NTC" VACANT, allow [Temperature] to increase to more than 38.0° C BEFORE
continuing to part d!
Turn [Dialysate Flow] OFF (Dialysate Flow
d)
on/off lamp blinks)!
e) Figure right, avoiding VACANT position #4, plug NTC
#2's connector, into NTC #3's position,
left ("MON-NTC"). Leave NTC #3 unplugged!
f) Call debug screen 4 to see TEMP (lower
left). TWO (2) possible scenarios:
1) IF (and ONLY if) TEMP is more than 3.0: See procedure number
2) IF TEMP is less than 3.0: See parts A and B below:
A) Replace NTC #2* with a known good. *To LOCATE NTC #2 refer to
B) See procedure number
(0.915 KΩ)
90° C
)!
page 289
T- 4.0.0.
nd
2
position from
T- 1.3.70
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
,
T- 1.3.60
(page 242).
(page 241).
T- 1.3.70 (page 242).
Figure 42 (page 218).
Page 241