Fresenius Medical Care 4008 E Technical Manual page 41

Positive pressure holding test
Test description:
Valves V24, V24B and V26 are checked for proper function (mechanical).
Test of the TMP unit by detuning it electronically in positive direction.
With the dialysate flow turned off, positive pressure is applied to the balancing system. The actual
value of the dialysate pressure transducer is now monitored for a defined period of time.
Test of the pump segment of P97.
Illustration:
LP 632
CPU 2
X632/B27
X631/A20
LP 631
CPU 1
LP 635
(4008 E)
Display
board
LP 924
(4008 H)
1-34
Fresenius Medical Care 4008 4/08.03 (TM)
X632/C5 V43
X632/A19 ACKN_ASP
UF_P_CTRL
X632/C27
X632/C25 V24_EN
X632/C26 V24B_EN
V24
X632/A4
V26
X632/A6
P_DETADJ
X632/C20
X632/A29
P_DIAL
X632/B28
X631/A21
LP 630
DATA BUS
Mother
board
LP 649
(4008 B)
LP 922
(4008 S)
Testgenerierung/Generation of Test
Rueckmeldung/Acknowledgement
X633L/ X633R/
B6 A18
.
X634L/
A25
LP 633
Input
board
.
X634L/
C25
X633R/
C28
V26 V24
X634L/A6
LP 634 X634L/A8
X634L/A5
Output
X634L/A7
board
V43
V31
P97
ASP
V35
V33
V37