Fresenius Medical Care 4008 S Service Manual

Chapter 7: Error messages
7-30 Fresenius Medical Care 4008 S (Version V10) SM-EN 7/01.13
V84 malfunction Conductivity is detected at the V84 electrodes.
This error message is emitted for the first time at the end of the T1 test.
The error can be acknowledged for the duration of one hemodialysis procedure
by pressing the Dialysis Start key. It is, however, not possible to switch off the
flow (Bergström- / ISO-UF operating mode). Should the error occur during Flow
OFF, the flow is switched on automatically.
– First of all, it must be verified whether a Rinse Failure F01, F02 or F03
occurred during the previous disinfection procedure (see listing of cleaning
program errors). Should this be the case, a disinfection program I – IV
(not Dis V) must be completed correctly. The problem can also be corrected
using the CALIBRATION service menu, NOVRAM menu item
(clear V84 malfunction).
– Should this not be possible, the error memory of the device can be read out.
– Should this neither be possible, the test described below can be performed:
Remove the disinfectant.
Turn the device off and back on again.
Perform or skip the T1 test.
Should the error message be displayed again at the end of the T1 test, it was
generated by a Rinse Failure F01, F02 or F03 and can be cleared only by
taking the measures described above.
Should the message not be displayed again, a second test can be
performed:
Reconnect the disinfectant.
Set the UF rate and switch on the UF unit.
Should the error occur at this moment, there is a leakage on V84
(see listing of cleaning program errors).
Shunt Cover open
(temporarily)
– P.C.B. LP 633-5 C24 (100 nF) temporarily short-circuited
– Shunt interlock defective (check switches)
Voltage Failure
(temporarily)
– P.C.B. LP 633-5 C84 (100 nF) temporarily short-circuited
UF1 volume - Error Failure to pass the test for an UF pump. The fill volume for the secondary air
separator is outside the tolerance of 100 ml ±4 ml.
Possible cause:
– The UF pump fails to deliver correctly (not calibrated or mechanical defect)
– If the test result is > 104 ml, the problem can also be caused by air coming
from a poorly deaerated dialyzer
F327 UF failure Pause between two UF1 pump strokes less than 220 ms.
Possible cause:
– CPU1 defective
F328 UF failure Pulse time of one UF1 pump stroke less than 180 ms.
Possible cause:
– Controlling monoflop on LP 634 defective
F329 UF failure Pulse time of one UF1 pump stroke exceeds 500 ms.
Possible cause:
– Controlling monoflop on LP 634 defective
Error message Description

Fresenius Medical Care 4008 S Specifications

General

Brand	Fresenius Medical Care
Model	4008 S
Category	Medical Equipment
Language	English