T- 1.5.3.10 Meter Stability May Or May Not Be More Than Two - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 1.5.3.10 METER STABILITY MAY OR MAY NOT BE MORE THAN TWO

a) Incoming RO water temperature, less than 20.0° C, may cause unstable temperature. In any event,
continue to part b.
b) Return NTC #3's connector to the
c) If NTC #3 is plugged in properly screen [Temperature] returns to 80° C or more!
d) Press 'Esc' then 'CONFIRM' twice to call the "Select Program" screen.
e) Return the dialyzer connectors to the shunt door!
f) Return to HEAT DISINFECT.
g) Allow up to thirty (30) minutes! TWO (2) possible scenarios:
1) IF "TEMP OVER 95 DEGREES" alarm DOES NOT reoccur: The problem is not occurring at this
time! DO NOT continue.
2) IF "TEMP OVER 95 DEGREES" reoccurs: As NOTED previously, based on the METER'S
stability, TWO (2) possible scenarios i) or ii) below:
i) IF (and ONLY if) METER stability was MORE than two (2.0): READ before performing!
A) With the machine off, one at a time, swap in the listed components (see Component List A
below), with known good THEN; B) In between, return to
T- 1.5.1 until stability is less than two (2) indicating the last component swapped in is the
problem.
COMPONENT LIST A: 1) NTC #2
1
To LOCATE NTC #2 refer to
2
To LOCATE the boards refer to
3
Calibrate Temp Sensor AND Temp Control AND Cond Cells BEFORE testing these
components!
ii) IF METER stability was two (2.0) OR LESS: READ before performing! A) With the machine
off, one at a time, swap in the listed components (see Component List B below) with known
good THEN; B) In between, return to
OVER 95 DEGREES" DOES NOT occur indicating the last component swapped in was the
problem.
COMPONENT LIST B: 1) NTC #3
1
To LOCATE NTC #3 refer to
2
To LOCATE the boards refer to
3
Calibrate Temp Sensor AND Temp Control AND Cond Cells BEFORE testing these
components
nd
2
distribution board position from the LEFT, "MON-NTC"!
1
; 2) Sensor Board
Figure 42
Figure 4A
page 247
1
; 2) Sensor Board
Figure 42
Figure 4A
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
page 247
2,3 ;
3) Functional Board
(page 218)
(page 9)
, procedure number T- 1.5.1
2,3 ;
3) Functional Board
(page 218)
(page 9)
, procedure number
2,3
until "TEMP
2,3
Page 249