Fresenius Medical Care AquaA, Instructions For Use Manual

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Chapter 14: Options
Fresenius Medical Care AquaA IFU-EN-US 06B-2021 193
14.2.2 Functional description–AquaHT

Intended use–AquaHT
Fields of application The AquaHT is intended to be used as a supplemental module to a
AquaA . It performs a heat disinfection of the AquaA as well as the
dialysis water distribution system.
Membrane life
Restrictions – Ring main heat disinfection is restricted to ring mains with a
maximum length of 3 x 250 m (600 m in total).
– For interface heat disinfection, the volume of hot dialysis water
supplied to the dialysis devices is restricted and the temperature
which can be reached is influenced by the tank temperature, the
heater output, and heat loss.
The AquaHT is an extension module for the
AquaA reverse osmosis system and has
been selected by the responsible
organization as a supplemental component in
order to obtain a dialysis water production
and supply unit that can be disinfected using
heat.
The module does not change the existing
functions or operating phases of the
AquaA ,
it simply complements them. Additional
functions and operating phases are as
follows:
– Heat disinfection of the reverse osmosis
system with membranes
– Heat disinfection of the dialysis water ring
main
– Interface heat disinfection
Supply of hot dialysis water to the dialysis
devices and their connecting lines while
heat disinfection of the dialysis water ring
main is in progress.
– Rinsing of the ring main without a AquaA
start (with the tank option)
Note
The membrane life is primarily determined by the number of heat
disinfection cycles. A potential reduction of the membrane performance
generally occurs after 160 heat disinfection cycles.