LabTower EDI
Ultrapure water system
36
12.1 Rinsing the membrane
Rinsing out preservative solution:
According to the mode of delivery, the system may be supplied filled with a solution containing a
preservative. When putting the system into operation, the permeate must be run to drain for at
least 3 – 4 hours after switching to production.
For rinsing and disinfecting, the permeate hose must be drawn off of the outlet of
the Ultrapure water system so that the EDI cell does not suffer damage.
Connect a hose from the assembly kit to lead off the contaminated permeate from
the permeate outlet of the Ultrapure water system to drain.
Unplug the pure system „Power supply EDI“ plug.
Now carry out the rinsing procedure.
When the rinsing and disinfecting process has finished, fit the permeate hose
(storage tank) back to the permeate outlet of the Ultrapure water system and
re-connect the EDI power supply.
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 ultrapure water quality.
Leave your ultrapure 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
appropriate 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
exposure to frost must be avoided.