Fresenius Medical Care 4008 E Technical Manual page 45

F20 pos. Pressure
F21 pos. Pressure
F22 pos. Pressure
F23 pos. Pressure
F24 – F27
F28 pos. Pressure
F95 pos. Pressure
1-38
Fresenius Medical Care 4008 4/08.03 (TM)
The positive pressure holding test failed to be passed. While the flow
was off, a pressure drop of more than ±80 mmHg/min was detected in
the hydraulic system.
– Leakage in the hydraulic system.
– The UF pump spring is defective.
– ASP fails to occlude.
– Relief valve leaking.
– V84 leaking.
The dialysate pressure cannot be set to a value between 460 and
760 mmHg ±30 mmHg (10 sec).
– The heat exchanger is defective.
– Problem in the hydraulic system.
The air separation pump is not running during the test phase (2 sec).
– Control line (AIR_SEP+, X634L/A22) → ASP/..., 24 V are missing.
– Control line (AIR_SEP–, X634L/C22) → ASP/..., 0 V are missing.
– Acknowledgement (ACKN_ASP, X634L/B10) → X632/A19, 12 V
are missing.
Pressure drop in the hydraulic system during the measurement phase
(8 sec). Change more than +4 digits or more than –8 digits.
– Leakage in the pump segment of the air separation pump.
– Leakage in the heat exchanger.
– Acknowledgement (P_DIAL, X633L/B6) → X632/A29, change in
voltage too large.
See between F01 and F02
ASP functional test (running and delivery test)
– ASP line segment is occluded
– ASP line segment has been incorrectly inserted (check direction of
delivery)
– ASP is not running (electrically or mechanically)
– V87 electrically or mechanically closed
System error.