Fresenius Medical Care 2008K Troubleshooting Manual page 54

d) With the blue wire harness remaining plugged in (see Figure
right) AND with the shunt door OPEN, CAREFULLY measure
DC voltage across valve #24's metal solenoid terminals.
mV
e) A reading like 24
volts).
f) Measurement 2 V (volts) DC or less?
Yes Valve #24 is bad (leaking)*.
No The actuator board is bad* (see
IMPORTANT!
*
'bypass function'.
F- 14.0.10 CHECK FLOW 'FROM' DIALYZER
A 1000 ml graduated cylinder is required for this procedure. BE VERY CAREFUL!
a) Referring to Figure 24
the filter segment and tubing for restrictions. If a restriction is located this is the problem!
VERY IMPORTANT!
b)
c) Plug the red concentrate connector into its rinse port to call the "Select Program" screen.
Do NOT start a Cleaning Program!
d) With the "Select Program" screen up, CAREFULLY plug
valve #35 into valve #30's distribution board position
(labeled "V30" or "P30").
e) Remove the red dialyzer connector from the shunt and measure flow from it, into a 1000 ml graduated
cylinder for 30 seconds. If no flow,
accordingly:
400 ml or greater: Valve #25 is okay. See procedure number
Less than 400 ml: Check valve #25 for restrictions (see
F- 14.0.11 CHECK FLOW 'TO DIALYZER'
a) IMPORTANT! Return the red dialyzer connector to the shunt.
b) IMPORTANT! Valve #35 should still remain plugged into valve #30's distribution board position.
c) With the "Select Program" up, CAREFULLY plug valve #24
into valve #34's distribution board position ("V34").
d) Remove the blue dialyzer connector from the shunt and measure flow from it for 30 seconds. If no flow,
carefully double check connector placement!
recommended! Proceed accordingly:
400 ml or greater: Valve #24 and the DiaSafe
Less than 400 ml: a) CAREFULLY return valve #30, #34 and #24 to their respective distribution
is 24 millivolts (
After repair be CERTAIN to perform
(page 50) CAREFULLY open Dialysate Filter #73's housing (if present) and check
Assure Dialysate Flow is ON (Dialysate Flow on/off LED off)!
carefully double check connector placement!
(page 53).
board positions.
b) Two possibilities: 1) Restricted DiaSafe
valve # 24 (see Figure
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 1 – Flow Errors In Dialysis Program
0.024
Figure 4A, page 8).
FINAL CHECKS
F- 14.0.11
Figure
If there is flow, two measurements are
®
filter are okay. See procedure number
®
25, page 51).
(page 10) to double check the
WARNING!
(page 52).
24, page 50).
F- 14.0.12
filter (if equipped); 2) Restricted
Proceed
Page 52