Lp 645 Position Sensor Membrane Pump - Fresenius Medical Care 4008 E Technical Manual

8.21 P.C.B. LP 645 Position sensor membrane pump
8.21.1 Description
General information
P.C.B. LP 645 comprises the circuit for the recognition of the end position of the membrane pump.
Description
IC 1 and IC 2 are provided as two optical sensors. They are configurated such that their outputs
are linked by an AND operation. Their joint output is X5.
X5 turns to L level when the membrane of the pump is located in the front dead point (initialization
point).
Fresenius Medical Care 4008 4/09.03 (TM)
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