Fresenius Medical Care 4008 E Technical Manual page 80

UF1 volume - Error
UF2 volume - Error
F327 UF-failure
F328 UF-failure
F329 UF-failure
F330 UF-failure
F331 UF-failure
F332 UF-failure
F333 UF-failure
F334 UF-failure
F335 UF-failure
F336 UF-failure
Failure to pass the test for a UF pump. The fill volume for the secondary
air separator is outside the 100 ml ±4 ml tolerance.
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.
Pause between two UF1 pump strokes less than 220 ms.
Possible cause:
– CPU-1 defective
Pulse time of one UF1 pump stroke less than 180 ms.
Possible cause:
– Controlling monoflop on LP 634 defective
Pulse time of one UF1 pump stroke exceeds 500 ms
Possible cause:
– Controlling monoflop on LP 634 defective.
Pick-up time of the UF1 pump exceeds 10 sec.
Possible cause:
– Controlling output stage on LP 634 defective.
Theoretical/actual rate of the UF1 pump deviates by more than ±10 %.
Possible cause:
– Communication problem or CPU-1/CPU-2 software problem.
UF1 pump stopped for more than the maximum time period.
Possible cause:
– Controlling output stage on LP 634 defective.
– UF pump interruption
– Communication problem or CPU-1/CPU-2 software problem.
UF1 volume change more than 10 ml although UF is switched off.
Possible cause:
– Communication problem or CPU-1/CPU-2 software problem.
Pause between two UF2 pump strokes less than 220 ms.
Possible cause:
– CPU-1 defective
Pulse time of one UF2 pump stroke less than 180 ms.
Possible cause:
– Controlling monoflop on LP 634 defective.
Pulse time of one UF2 pump stroke exceeds 500 ms.
Possible cause:
– Controlling monoflop on LP 634 defective.
Fresenius Medical Care 4008 4/08.03 (TM)
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