Fresenius Medical Care 4008 E Technical Manual page 81

F337 UF-failure
F338 UF-failure
F339 UF-failure
F340 UF-failure
F341 UF-failure
F342 UF-failure
F343 UF-failure
1-74
Fresenius Medical Care 4008 4/08.03 (TM)
Starting time of the UF2 pump exceeds 10 sec.
Possible cause:
– Controlling output stage on LP 634 defective.
Desired/actual rate of the UF2 pump deviates by more than 10 %.
Possible cause:
– Communication problem or CPU-1/CPU-2 software problem.
UF2 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.
UF2 volume change more than 10 ml although UF is switched off.
Possible cause:
– Communication problem or CPU-1/CPU-2 software problem.
Mechanical UF1 pump failure.
Possible cause:
– Broken spring
– Contaminated filter
Mechanical UF2 pump failure.
Possible cause:
– Broken spring
– Contaminated filter
UF1/UF2 pump volume difference
Possible cause:
– Delivery volume altered