Care and Maintenance
7.3 Changing the Sterile Final Filter
The sterile final filter is designed for the retention of particles and sterile filtration
of the ultrapure water. If the final filter is not changed regularly, the sterility of the
water cannot be guaranteed.
The replacement intervals for the final filter are factory-set to one month.
For a sterile filtration, the final filter should be replaced prior to each sampling.
The final filter should be replaced earlier when the following conditions occur:
− The product water flow rate is reduced.
− Bacteria breakthrough is detected.
Sartorius recommends changing the final filter monthly.
The final filter is supplied together with a bell assembly. To replace the final filter
assembly, proceed as follows:
t Release the old final filter from the quick connector on the display | dispenser
unit by simultaneously pulling out the filter and pressing the retaining ring.
t Press the new final filter into the quick connector of the display | dispenser unit.
t Attach the bell assembly to the final filter.
t Allow 6 liters of water to run through the final filter (e.g. using manual and | or
volume-controlled water dispensing); this is done to rinse and vent the final filter.
t Vent the final filter using the attached vent valve.
t After dispensing ultrapure water, attach the protective cap to the bell assembly.
If a newly installed final filter clogs rapidly after installation, your arium
®
system
may need to be sanitized to remove bacterial contaminants
(see Chapter “7.1 Replacing Cartridges”, page 36“).
After replacement, install a new final filter.
Quick connector
Vent valve
Bell assembly
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