Fresenius Medical Care 2008K Troubleshooting Manual page 224

BL- 4.0.0 CHECK BLOOD LEAK DETECTOR #8
IMPORTANT!
a) If Automated Tests start (screen reads "Test ...") allow them to complete! Automated
Testing, while troubleshooting, may cause misdiagnosis! IGNORE all test fail messages for now!
b) Remove the venous 'dummy chamber' from the Level Detector module to prevent 'Forced Test'.
c) Call debug screen 4 to watch LEAK and DIMN. Proceed as instructed below (six scenarios):
1. LEAK remaining between 4.5 and 5.2 AND DIMN remaining between 4 and 6: Both blood leak
channels are displaying NO blood leak. Bleach Disinfect the machine and if the Blood Leak returns
in the near future see procedure number
2. LEAK less than 0.2 volts: See procedure number
3. DIMN less than 0.2 volts: See procedure number
4. LEAK greater than 5.2 volts: See procedure number
5. DIMN greater than 6.0 volts: See procedure number
6. All others: See procedure number
BL- 4.0.1 CHECK FOR 'OPEN' BLOOD LEAK DETECTOR
IMPORTANT!
a) To prevent damage, turn the machine
off!
b) Referring to the Figure (right), ASSURE the small
(blue) Blood Leak Cable is plugged securely into the
distribution board. If not this may be the problem!
c) NOTE this procedure and page number in case you need
to return here.
d) The sensor cable MAY be bad. NOTE that five (5)
BLOOD LEAK connections will be checked and proceed
to page 228, SECTION 17 - CHECKING THE SENSOR
BOARD CABLE.
e) Place the machine into Dialysis program (remember to press the 'CONFIRM' key).
f) Allow eight minutes or until the Bypass LED turns off then see procedure number
BL- 4.0.2 CHECK FOR 'SHORTED' BLOOD LEAK DETECTOR
IMPORTANT!
a) Turn the machine off.
b) Referring to the Figure (above, right) unplug the small (blue) Blood Leak Cable from the distribution
board.
c) Using a flashlight, check the inside the vacant distribution board position for 'white' corrosion or
damaged male pins that may cause false signals from the distribution board.
d) If the distribution board is okay, and leaving the cable unplugged for now, place the machine into
Dialysis Program (remember to press the 'CONFIRM' key)
e) Call debug screen 4. Is LEAK and DIMN = 0 volts?
Yes a) Turn the machine off and return the blood leak cable to the distribution board.
b) Place the machine into Dialysis program (remember press the 'CONFIRM' key).
c) Allow eight minutes for stabilization then see procedure number
No Three possibilities: 1) Bad sensor cable; 2) Bad sensor board (see
3) Bad distribution board.
BL- 6.0.0
BL- 6.0.0 (page 224).
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 15 – Blood Leak Problems
(page 224).
BL- 4.0.1 (page 222).
BL- 4.0.1 (page 222).
BL- 4.0.2 (page 222).
BL- 4.0.2 (page 222).
BL- 5.0.0 (page 223).
BL- 5.0.0 (page 223).
Figure 4A, page 8);
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