Fresenius Medical Care 4008 E Technical Manual page 52

Error description:
Error message
F02 Diasafe
F04 Diasafe
F06 Diasafe
F07 Diasafe
F08 Diasafe
F09 Diasafe
F10 Diasafe
F20 Diasafe
F95 Diasafe
Description
The balancing chamber was not stopped by CPU1 (24 sec).
– The message via the serial interface from CPU1 to CPU2 is missing.
– The current rise pulse is missing (CI, X634R/A23) → X633L/C31, no
5-V pulse.
CPU1 failed to complete one balancing chamber switching within 20
sec (30 ml fluid not removed?).
– The message via the serial interface from CPU1 to CPU2 is missing.
– The current rise pulse is missing (CI, 634R/A23) → 633L/C31, no 5-
V pulse.
During the pressure built-up phase, a negative pressure of less than
–450 mHg has developed (24 sec).
– Diasafe valve not open, control line (V_DSAFE, X632/B5) → X637/
C16, 0 V are missing.
After the maximum fluid volume of 145 ml + 30 ml has been removed,
the expected negative pressure of –300 mmHg to –450 mm Hg failed to
build up.
– Major leakage in the Diasafe filter membrane and/or filter housing.
– Major leakage in the O-rings on filter holder/couplings.
– V26 electrically or mechanically not closed.
The negative test pressure of more than –300 mmHg has developed
before the minimum fluid removal of 145 ml –30 ml has been achieved.
– The Diasafe filter is contaminated.
– The Diasafe filter was not correctly deaerated upon start of the test.
– V112 electrically or mechanically not open.
The zero point for pressure measurement cannot be set. The maximum
test time has been exceeded (max. test time 5 min).
– Leakage in the Diasafe filter membrane and/or filter housing.
– Leakage in the O-rings on filter holder/couplings.
– P.C.B. LP 632, IC3/pin 12 not in socket or IC defective (differential
amplifier).
The negative pressure to be achieved in the test failed to stabilize
within the maximum test time of 5 minutes (change > ±16.7 mmHg/
min).
– Leakage in the Diasafe filter membrane and/or filter housing.
– Leakage in the O-rings on filter holder/couplings.
– Leakage in the hydraulic system.
– V 26 electrically or mechanically not closed.
It was not possible to prime (deaerate) the dialysate filter within 2
minutes.
– Flow problems.
– The priming program is permanently active (level sensor, osmosis
water, or P.C.B. LP 633, IC36 defective).
System error.
Fresenius Medical Care 4008 4/08.03 (TM)
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