Fresenius Medical Care AquaA, Instructions For Use Manual

Page: 51 / 240

Chapter 4: Operation
Fresenius Medical Care AquaA IFU-EN-US 06B-2021 51
4.5.4 SUPPLY–Permeate stop

Dialysis water conductivity and temperature monitoring
If the conductivity or temperature alarm limit is exceeded, the dialysis
water supply will be stopped by the closing of the dialysis water flow
valve. Yield control is deactivated during this time.
4.5.5 SUPPLY–Warning
During SUPPLY–Warning mode, the AquaA is still operational but
requires an analysis of the warning (see chapter 5.3.1 on page 111).
The display shows the current values or the list of messages with the
current message.
4.5.6 SUPPLY–External locking
In this operating mode, the functionality of the AquaA is limited due to
a water pretreatment system signal. There is an insufficient supply of
water to the
AquaA . The supply of water from the water pretreatment
system to the AquaA is blocked as a precautionary measure. A run-dry
protection warning will therefore appear if dialysis water is consumed.
Once the water pretreatment system reports an adequate water supply,
the valve will be reopened.
The external locking function is configured by the service technician in
the Service menu of the
AquaA .