Nw- 3.0.0 Isolate Float (#5) Signal - Fresenius Medical Care 2008K2 Troubleshooting Manual

NW- 3.0.0 ISOLATE FLOAT (#5) SIGNAL

IMPORTANT!
a) TURN THE WATER OFF!
b) Figure right, place the
TWO-RESISTOR SET
the
distribution board position, "FLOAT-SW". This
simulates a 'closed' float switch!
c) Call debug screen 0. WITHOUT LOOKING
AWAY, watch VALVE #41's dot' for two (2)
minutes. TWO (2) possible scenarios:
1) IF (and ONLY if) Valve #41's 'dot' is BLUE always: Valve #41 should be open. Leaving the
plug installed, see procedure number
2) IF Valve #41's 'dot' is or EVER turns WHITE: See parts a AND b below:
a) ENSURE the
distribution board position "FLOAT-SW"! If not, repeat procedure number
from part b.
b) Leaving the plug installed, swap the following components in (Component List below) one at a
time and, in between, test each new component until Valve #41's 'dot' remains blue indicating
the last component swapped in is the problem.
Component List: 1) Actuator-Test Board
4) Distribution board; 5) Motherboard. .
1
To LOCATE the boards refer to
2
To prevent "Cond Offset Failure", place the machine into T and C Mode (refer to
OPERATING
274 Ω
resistor plug, from
, into the float's
NW- 4.0.0
274 Ω
TWO-RESISTOR SET
plug, from the
Figure 4A
MODES, page Error! Bookmark not defined.)
LEFT BLANK INTENTIONALLY
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
(page 152).
is PROPERLY placed at
1 1,2
; 2) Sensor Board ; 3) Sensor Board cable;
(page 9).
NW- 3.0.0 (page 151)
Page 151