Thermo Scientific Barnstead LabTower AFT
Pure water system
39
15.1 Maintenance intervals
Consumable materials are to be replaced at the intervals given in the following Table or when
there is a drop in performance:
Material
Flow chart no.
Article no.
Interval*
Pretreatment 09.4001
Prefilter/Hardness stabilization
F1
06.5204
6 Months
Pretreatment 09.4000
Prefilter
Hardness stabilization
F1
06.5201
06.5452
6 Months
6 Months
Filter cartridge
F3
09.4011/09.4012
12 Months
*Please keep in mind that the life of your consumables is directly dependent on the quality of
the feed water and the amount of the water used daily. The interval is contingent on the feedwa-
ter quality so that a shorter one may be necessary.
15.2. Rinsing the membrane
Rinsing out preservative:
According to the mode of delivery, the system may be supplied filled with a solution containing a
preservative. Should this be the case, it is important that the permeate be run to drain for at
least 3 – 4 hours when the system is first put into operation and switched to production.
To do this, each time the tank has been filled, open the dispensing tap where your water is
withdrawn and lead the pure water that flows out to drain.
Cleaning the membrane:
Automatic rinsing lengthens the service life of your reverse osmosis module. Coarse particles
and other contaminants are swept away from the membrane surface during this rinsing process.
The rinsing phases so ensure the longest service and optimal purified water quality.
Leave your pure water system on over the weekend and during
holiday times. Only then can the 12-hourly rinse operate and ensure that
your reverse osmosis module is not subject to bacterial growth during
standstill periods.
Should the performance of your module drop because operation of the system without appro-
priate pretreatment has resulted in blockage of the membrane, it may well be that your module
can be reconditioned.
Reconditioning and disinfection of the module is only to be carried out by authorized service
personnel on-site or by sending the module to the manufacturer of your system, whereby expo-
sure to frost must be avoided.
