Membrane Pump (Conc/Bic) - Fresenius Medical Care 4008 S Service Manual

10.8.8 Membrane pump (Conc/Bic)

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Fresenius Medical Care 4008 S (Version V10) SM-EN 7/01.13
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Chapter 10: Servicing / repair
Remove the tubes.
Pull off the cable from the HPU; slot CO1 for
concentrate pump (1), slot BI1 for
bicarbonate pump (2).
Remove the screw (2) and press the valve
block (3) to the side. Unscrew 4 nuts (1), lift
the membrane pump a little and remove it.
When installing, ensure that the pump outlet
(blue) faces upwards and secure the tubes
with new tube clamps.
Concentrate pump tubing:
1 Outlet (blue) to dosing point H205
2 Inlet (white) to air separation chamber
H201
Bicarbonate pump tubing:
3 Outlet (blue) to dosing point H205
4 Inlet (white) to CD cell CD132
After replacement or repair, measure the
membrane pump volume in liters, calibrate,
check conductivity.
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