GORMAN-RUPP VG3B3-B, Инструкция по установке, эксплуатации и обслуживанию

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Installation Operating and Maintenance Guidelines T-Rack vario 3(2012-05) E inge
Page 14
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4.2 Rinsing the inge UF modules
To prevent dehydration and bacterial growth, all inge UF modules are preserved using a
non toxic aqueous preservation solution (glycerin 25 wt% / sodium bisulfite 0.75 wt%). The
following rinsing procedure must be performed to flush out the solution before use:
1. Flush the filtrate tank thoroughly and remove any impurities prior to filling the UF
system / filtrate tank
2. FB = Filtration from bottom (operation of the system in “Filtration Bottom” mode,
see Figure 4.1) at a flux rate of 50 l/(m2xh) for at least 20 minutes (be careful to
fill the feed side of the system with raw water
slowly in order to avoid water
hammers). Make sure that no valves are closed on the filtrate side. The filtrate
must be discharged before the filtrate tank.
3. FFB = direction of flow from bottom to top (module venting: start in “Forward Flush
Bottom” mode) at a flux rate of 80 l/(m2xh) for at least 10 minutes.
4. FB = Filtration from bottom (operation of the system in “Filtration Bottom” mode at
a flux rate of 80 l/(m2xh) for at least 15 minutes. Make sure that no valves are
closed on the filtrate side. The filtrate must be discharged before the filtrate tank.
5. FT = Filtration from top (operation of the system in “Filtration Top” mode at a flux
rate of 80 l/(m2xh) for at least 15 minutes. Make sure that no valves are closed on
the filtrate side. The filtrate must be discharged before the filtrate tank.
6. If it is not possible to prevent filtrate from entering the filtrate tank, then the
filtrate tank must be drained completely (ensure that all residues are removed).
7. Fill the filtrate tank.
8. BWB = Backwash to top (operation of the system in “Backwash Bottom” mode at a
flux rate of 230 l/(m2xh) for at least 60 seconds or until all the filtrate has been
discharged from the filtrate tank, respectively.
9. FB = Filtration from bottom (operation of the system in “Filtration Bottom” mode
to completely fill the filtrate tank at a flux rate of 80 l/(m2xh) for at least 15
minutes. Make sure that no valves are closed on the filtrate side.
10. BWT = Backwash to bottom (operation of the system in “Backwash Bottom” mode at
a flux rate of 230 l/(m2xh) for at least 60 seconds or until all the filtrate has been
discharged from the filtrate tank, respectively.