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Jun 08, 2022 View:

enolmaster filters seemingly clogged when brand new

Just put some new cartridges in the enolmaster. Opened the bypass valve. Tried to filter r/o water through to rinse them. The vacuum ran up to 55 or so. Hose from filter housing unit to filler was partially collapsing due to not being able to pull the water through the filters. Turn on bypass or take the filters out and it pumps through fine.

These are brand new filter cartridges. This is the second time this has happened. Any idea what I'm doing wrong? Or can these cartridges be defective?


Reply:

What is the filter size (um)?

What are you filtering?

Do you get proper flow when there are no filters in the line?


Reply:

Two different micron sizes. .2 and .5. Flow is fine without the filters in place. They are extremely slow flowing before anything other than r/o water has touched them.

Other filters from the same source work fine. Not sure if these are defective or what.


Reply:

Are the filters rated for liquid? The results you're describing in the first post remind me of what happens when you try to run liquid through a filter that's rated for gases.


Reply:

They are made for the Enolmaster so they should be made for liquid.

Is it possible to damage them with too much vacuum before they are fully submersed?


Reply:

Two different micron sizes. .2 and .5. Flow is fine without the filters in place. They are extremely slow flowing before anything other than r/o water has touched them.

Other filters from the same source work fine. Not sure if these are defective or what.


Reply:

Surface tension can make it appear as if a very fine filter is blocked.

If your filter medium is slightly wet but there is air on both sides of the filter, the surface tension between the water and the fine filter material can "block" the filter.

If it is an in-line filter, see if you can pour some liquid into the inlet side and displace the air and I am reasonably confident it will start working.

Please let me know if this solves the problem

Pete


Reply:

What is the flow rate with just water? Or without the filter in line.


Reply:

Surface tension can make it appear as if a very fine filter is blocked.

If your filter medium is slightly wet but there is air on both sides of the filter, the surface tension between the water and the fine filter material can "block" the filter.

If it is an in-line filter, see if you can pour some liquid into the inlet side and displace the air and I am reasonably confident it will start working.

Please let me know if this solves the problem

Pete


Reply:

You might want to talk directly with whomever is your local PALL distributor representative, or other manufacturer. There are a lot of fine differences between the different filter types. The Enolmatic and Enolmaster use the same filter type (10" flat closed end cartridge), but then there can be a wide range of specific variations on pore size, type, material, reinforcement, etc.


Reply:

RUM,

A nearby distillery tried to flush out enolmatic filters with warm RO water and they became blocked.

Did you flush with hot water?


Reply:

RUM,

A nearby distillery tried to flush out enolmatic filters with warm RO water and they became blocked.

Did you flush with hot water?


Reply:

They believed the hot water(don't know the exact temperature) caused the filter to block.


Reply:

Interesting. Our water is not what us Floridians would call hot, but it can be pretty warm in the summer (maybe 90 or 95 F). That is when we had the problem. I'll cool the water first in the future and see if we still run into the problem.

Thanks!