PREFILTER
19
Rev C
For these higher water use commercial applications, we recommend
using a high capacity carbon cartridge or backwash carbon filter as
pretreatment to the Merlin. Remove the standard Merlin carbon block filter
from the system.
An alternate 10-micron nominal high capacity sediment prefilter is
available for Merlin. This filter can be used for commercial or well water
applications where no chlorine is present in the Merlin inlet water.
This sediment filter is interchangeable with the standard Merlin carbon
prefilter for applications without chlorine.
Figure 11
EXAMPLE:
Q:
A light commercial application uses 200 gals (757 liters) permeate
water per day. Estimate the prefilter life.
A:
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Prefilter life
(days)
5000
4 X 200 gals
=
=
6.25 days
Standard Merlin Prefilter
5-micron nominal
3 NTU max turbidity
5000 gal capacity
1 ppm chlorine max at inlet
Alternate Merlin Filter for
Commercial or Well Applications
10-micron nominal
TBD NTU max turbidity
TBD gal capacity
0 ppm chlorine max at inlet
NOTE:
Some applications may have water turbidity or iron levels that
negatively affect prefilter life. If a prefilter clogs very quickly, consider
additional pretreatment before the system.
