RO Flushing pre filters

[Jamesmarshall]

I’ve got a 4040 ro system and just wondered if the pre filters should be flushed and if so how often ?

 

[spruce]

I’ve got a 4040 ro system and just wondered if the pre filters should be flushed and if so how often ?

No, just the membrane. The carbon prefilter must be changed according to the suppliers/manufacturers specifications. It protects the membrane from be destroyed by Chlorine. We usually change the sediment filter at the same time.

 

[Deleted member 7446]

I’ve got a 4040 ro system and just wondered if the pre filters should be flushed and if so how often ?

As spruce has mentioned in previous post reference to prefilters, when buying new they will have a manufacturers specification for each stating service life by volume which is best to record and change them out every so many quoted Litres 

 

[Jamesmarshall]

Yes I’ve pencilled on the filter housing just before roughly 77000 litres if my memory is correct which in my case would be around 3 months. My pre filters have red buttons at the top which let water out when pressed which I assumed were flushes!

I’m glad they don’t need flushing tbf less to remember 

No, just the membrane. The carbon prefilter must be changed according to the suppliers/manufacturers specifications. It protects the membrane from be destroyed by Chlorine. We usually change the sediment filter at the same time.

I do both together also they’re cheap enough when buying a couple at a time

 

[Part Timer]

Yes I’ve pencilled on the filter housing just before roughly 77000 litres if my memory is correct which in my case would be around 3 months. My pre filters have red buttons at the top which let water out when pressed which I assumed were flushes!

I’m glad they don’t need flushing tbf less to remember 

I do both together also they’re cheap enough when buying a couple at a time

I believe the red buttons are pressure release buttons incase you get air in your system.

 

[Pjj]

The red buttons are to release air to stop air locks as part timer said .

 

[Jamesmarshall]

How would you know if you have air in the system?

 

[Pjj]

How would you know if you have air in the system?

If the filters are clear you can see it in the tops of the filters , and sometimes no water will come out of them until you bleed them with the red button , most of the time they will self bleed and push the air through and the water will come through without having to do anything.

 

[Deleted member 7446]

Yes I’ve pencilled on the filter housing just before roughly 77000 litres if my memory is correct which in my case would be around 3 months. My pre filters have red buttons at the top which let water out when pressed which I assumed were flushes!

I’m glad they don’t need flushing tbf less to remember 

I do both together also they’re cheap enough when buying a couple at a time

The red buttons are primarily for pressure release to allow you to unscrew the housing filter bowl because constant pressure in a closed system makes them difficult to release. Think of it as a bleed off valve 

 

[Jamesmarshall]

Thanks all ?

 

[Iron Giant]

I believe the red buttons are pressure release buttons incase you get air in your system.

Thought that was the ejector seat ?