Fresenius Medical Care 2008K Troubleshooting Manual page 259

DIALYZE VALVE FAIL- 4.0.1 ISOLATE THE FUNCTION BOARD
a) Turn the power off and swap in a known good function board. Assure that EEPROM (IC2) is installed.
b) Enter Service Mode
the 'CONFIRM' key (the "x" turns blue).
c) Place the machine into Dialysis program. Does the error reoccur?
Yes Proceed accordingly:
If the problem is intermittent: Three checks: 1) Per Field Service Bulletin 08-FRK-
003 install the Ferrite Core (P/N 367032-05) and Cable Tie (P/N 368189-01) at the
shunt door cable; 2) One at a time swap in the other card cage boards with known
good and test in between; 3) The motherboard may be bad.
If the problem is occurring constantly: Two checks: 1) One at a time swap in the
other card cage boards with known good and test in between; 2) The motherboard
may be bad.
No Problem solved. The previous actuator board is bad.
DIALYZE VALVE FAIL- 5.0.0 CHECK THE NOTED VALVE'S SOLENOID
a) Unplug the NOTED valve from the distribution board.
b) Using a flashlight, check inside the vacant position for white corrosion or damaged male pins. There
should be five pins.
c) If the distribution board is okay, and referring to the Figure
(right), open the female distribution board connector.
d) ASSURE the wires are well soldered between pins 1 and 5 (top
and bottom).
e) Measure resistance ( ) between the two wires inside the female
connector pins 1 and 5 (top and bottom),
f) Between 40 and 100 ?
Yes Replace the actuator cable (see
No Either the valve's solenoid or its blue wiring harness
is bad.
Options Hardware Options. Set T and C (Test and Calibration) to "Yes". Press
Figure
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
4A, page 8).
Section 25 – Valve Failures
Page 257