F- 7.0.3 Isolate Actuator-Test Board - Fresenius Medical Care 2008K2 Troubleshooting Manual

F- 7.0.3 ISOLATE ACTUATOR-TEST BOARD

To prevent damage, turn the machine OFF!
a)
b) Swap in a known good* Actuator-Test Board**.
* Known good = has been tested in another machine that is NEVER issuing Flow Errors! If a known
good Actuator-Test board is NOT used here AND the problem is a bad board you may perform
unnecessary, and time consuming, component replacement!
** To LOCATE the Actuator-Test board refer to the Figure (previous page).
Close the card cage!
c)
d) Turn the machine on return to Dialysis Program ("Select Program" → 'Dialysis' → 'CONFIRM')!
e) From the Home screen, set [Dialysate Flow] to 800 ml/min.
f) Call debug screen 0.
g) WITHOUT LOOKING AWAY, ensuring a "No Water" alarm NEVER occurs, watch Flow Error for up to
FIVE (5) minutes OR until it EVER = 1, even if just once. TWO (2) possible scenarios:
1) IF (and ONLY if) Flow Error EVER = 1! See procedure number
restricted Balancing Chamber valve!
2) IF Flow Error ALWAYS = 0! Problem solved! The previous Actuator-Test Board may be bad.
LEFT BLANK INTENTIONALLY
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
F- 7.0.4 (page 65) to test for a
Page 64