Fresenius Medical Care 2008K Troubleshooting Manual page 52

F- 14.0.5 CHECK 'FROM DIALYZER' CIRCUIT FOR RESTRICTIONS
a) Press the 'Escape' key then the 'CONFIRM' key twice to return to the "Select Program" screen.
b) Referring to Figure 24
Check #1: Open Dialysate Filter #73's housing (if present) and check the filter segment and tubing.
Check #2: Using a flashlight, check through the tubing to and from valve #25.
Check #3: Using a flashlight, check through the tubing between Dialysate Pressure Transducer #9 and
Blood Leak Sensor #8.
c) If no restrictions were located, touch valve #25's (black) solenoid. Is it warm or hot (i.e. energized)?
Yes The actuator board is okay, Replace valve #25.
No NOTE that VALVE #25 (ONLY) will be checked and proceed to page 78,
TROUBLESHOOTING
Figure 24 – Valve #25 / Pressure Transducer #9 / Dialysate Filter #73
F- 14.0.6 CHECK INPUT FLOW AT VALVE #24
a) With Rinse Program continuing, be CAREFUL HERE!
is in one of two locations. Clamp and remove its
machine will not occur.
b) Remove the clamp. Strong flow from valve #24's tubing?
Yes a) Remove the red concentrate connector from its rinse port to interrupt Rinse.
b) Reattach valve #24's tubing then see procedure number
No See procedure number
(page 50) three checks for restrictions:
VALVES.
F- 14.0.7 (page 51).
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 1 – Flow Errors In Dialysis Program
Referring to Figure 25
INPUT
tubing. Direct the tubing so that spillage into the
F- 14.0.8
(page 51
), valve #24
(page 51).
Page 50