4 . T S M S e r v i c e P r o g r a m
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B. Braun Avitum AG
Dialog
+
SW 9.xx
4.8.2.19
Test 1.19 Leak Test
1.
Activate the Leak Test menu with the Leak Test
key in the LL Manual Test menu. The following
menu is displayed.
2.
Check the functions with the appropriate keys.
You can run a leakage test for the balance
chamber system, the bypass valve
VBP
and the
main flow valves
VDE/VDA
, the air separator valve
VLA
and the UF pump
UFP
. The leakage test can
be started with a positive or negative pressure.
The flow system must be filled with water prior to
the leakage test (if necessary fill in menu 1.20
Water Part Overview).
Leak Test
The following components are tested:
Membrane position sensors:
MSBK1/2
Balance chamber valves:
VDEBK1/2, VDABK1/2, VEBK1/2,
VABK1/2
Bypass valve:
VBP
Dialyser in/output valves:
VDE, VDA
Disinfection valve:
VD
Air separator valve:
VLA
* Membrane leak proof test:
VDEBK/VABK
(opened)
VDABK/VEBK/VLA
(closed)
(*If Start Pressure Positive was set: An additional membrane leak proof test is performed
after the second test step.)
Start Pressure Positive
If the test is activated for the dialysate circuit an automatic leakage test is
performed. The test is started with a positive test pressure and then followed
by a negative test pressure.
If the test is started with a positive test pressure an additional test step is
performed after the second test step. This additional step performs a leak proof
test of the membranes. The valves have the following position during the test:
•
VDEBK/VABK
: opened
•
VDABK/VEBK/VLA
: closed
The test pressure is present in the inlet balance chamber during this test. The
membrane seals the outlet of the test circuit. A defective membrane would
cause a pressure drop.
HDF Online
HDF online machines: the two additional test steps
2a
and
2b
are performed
after the membrane test. Thus the valves
VDFF
,
VSB
,
VSAE
and
VSAA
and the
substitution port are checked.
Start Pressure Negative
If the test is activated for the dialysate circuit an automatic leakage test is
performed. The test is started with a negative test pressure and then followed
by a positive test pressure.
LLC Alarm
The leakage test consists of three test steps. If an error occurs an LLC alarm is
activated (LLC Status 00020000).
