Fresenius Medical Care 4008 E Technical Manual page 63

Rinse Failure F08
Rinse Failure F09
Rinse Failure F12
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Fresenius Medical Care 4008 4/08.03 (TM)
Rinse-free program, Dis, HDIS, or mandatory rinse in Dis I to V.
Pressure drop during the monitoring phase on PSW_102 (S123) (con-
centrate) or pressure build-up impossible.
– Check switching point of pressure switch.
– Check loading pressure.
(possibly splinter or contamination in orifice 151, remove tube and
purge tube from both ends)
– Check negative pressure and orifice (89).
(For this purpose, remove and purge the tubing from both
ends)
– Check check valve (117) and filter (119).
– Check CDS valve (102).
– Verify tightness of CDS path.
– Check acknowledgement of pressure switch on P.C.B. LP 633:
Concentrate: X633L/ A20
– Cartridge filter upstream of degassing pump clogged or wrong filter
(filter for disinfectant container) installed. Filters can be distin-
guished by different adapters.
Five minutes before the end of the mandatory rinse in Dis I to V.
Pressure switch PSW_104 (S124) (bicarbonate) or PSW_102 (S123)
(concentrate) did not open after pressure reduction.
See Rinse Failure F12.
Rinse-free program with following Dis or HDIS or mandatory rinse as
individual program in Dis I to V.
The pressure switches for PSW_104 (S124) (bicarbonate) and for
PSW_102 (S123) (concentrate) could not be opened.
– Membrane pumps fail to run.
– V 102 or 104 fails to open.
– Pressure on distribution piping > 500 mbar (according to specifica-
tion, the permissible pressure is max. 500 mbar) pressure peaks on
distribution piping: Frequently occurs in distribution pipings with
user points if e.g. several patients are disconnected simultaneously
and disinfection is started.
– Switching point of pressure switch too low:
desired value = 700 mbar ± 20 mbar
– Check acknowledgement of pressure switch on P.C.B. LP 633:
Bicarbonate: X633L/ A19