4 . T S M S e r v i c e P r o g r a m
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SW 9.xx
Test Procedure Positive Test Pressure
•
A positive pressure is built up with the
FPE
pump.
•
The pump is stopped and the valves closed if the set-point pressure for
PDA
= +400 mmHg is reached.
•
The
PDA
reference value is stored after a wait state of 5 s.
•
This reference value is compared with the actual value after 30 s.
•
If the deviation is < 10 mmHg the next test step is performed.
Test Step 1
VLA
,
VEBK1/2,
VABK1/2----------------
closed
Test Step 2
VLA, VDEBK1/2, VDABK1/2 -------------
closed
Note
Only if start pressure was positive
After the second test step a leak proof test of the membranes is performed. The
valves have the following position:
VDEBK/VABK
: ---------------------------- opened
VDABK/VEBK/VLA
: ----------------------- closed
Test Step 2a
Note
Test step 2a and 2b only for HDF online machines.
VLA
Air separator valve: ------------------ closed
VDFF
DF filter valve: ---------------------- closed
VSB
Substitution bypass valve: ------------ closed
VSAE
Substitution connection inlet valve: - closed
Test Step 2b
VLA
Air separator valve: ------------------ closed
VDFF
DF filter valve : --------------------- closed
VSB
Substitution bypass valve: ------------ closed
VSAA
Substitution connection outlet valve: closed
Test Step 3
VLA
,
VDE, VDA ------------------------
closed
DF Filter
PEV*
SB2
SB1
RVUFP
FSU
V
A
VSAE
VSB
PSABF
PSAUS
VSAA
VDFF
HDF Filter
HFB
VBE
DDE
VBP
B
C
FBK2
FBK1
V.D.
Z.D.
FVD
Air
RVFPA
LAFS
VLA
VDA
VABK2
VDABK2
VABK1
VDABK1
BK2
BK1
VEBK2
VDEBK2
VEBK1
VDEBK1
MSBK2
MSBK1
VDE
LA
UFP
SBS2
SBS1
BL
FPE
PDA
FPA
8
Dialyser
LVD
VD
M
8
TSDE
T
Fig.: Excerpt Flow Diagram for HDF Online