B. Braun Vista basic - Occlusion Sensor

a Unit Elements
411 Occlusion Sensor
Light Barrier
Board
Screw (1)
Occlusion Sensor Board
Do not loosen screw!
Fig: 4 - 15
Test Eguipment Ord. No.
Template22mm.............................. 7705034
Calibration device ............................. 770 501A
Designation Ord. No.
Occlusion sensor (cpl.) ........,................. 3452 0619
Exchange
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The occlusion sensor unit is mechanically very sensitive. It
must not be dismounted, which means that the occlusion
sensor board and the spring element must not be detached
the occlusion sensor support (plastic part). Make sure that
the movement of the coil core inside the coil is not hindered.
The occlusion sensor consists of the light barrier board with
EE-PROM and the occlusion sensor board with holder. Coil
core and bending element are screwed on this holder. Both
boards are connected via a flat cable,
1. Dismount the rear panel (sea "Rear Panel“ sg, 4-7) or
the pump unit (see "Pump Unit" pg. 4-12)
2.. Pull off the connecting cable to the microprocessor board.
Loosen and remove screw (1) of the light barrier board,
4. Loosen screw (2) of the ocelusion sensor and remove it
together with plain washer and serrated lock washer.
Then remove the occlusion sensor with occlusion sensor
board and light barrier board.
5. Mount new occlusion sensor.
==
The occlusion sensor to be installed is dependent on the cont-
roller board and the software.
Make sure that the occlusion sensor slide can smootly run in
the guides and that the coil core can move inside the coil.
6. Calibrate occlusion sensor:
a) Call the pressure display in the service program (see
"Pressure Sensor Function 310,0“ pg, 3-6).
b) Loosen hexagon socket screw (M 3x6) on the occ-
lusion sensor unit (with a 2.5 mm Allen key). 5 M
Vista basic 950971 Rev A (5/04)
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