When to Change Filter on RO?

[SeanD]

I'm supposed to check the RO sap filter before I run it, but I don't know what I'm looking for. I've put 800 gallons of raw sap through it so far. It's turning tan, but I don't know if that is staining from when I flushed the preservative out. Any input is appreciated.

Sean

[Clinkis]

Filter should be changed every day at least. Sometimes more especially later in season on those warmer long days. Also if you see your flow rate dropping. You should never leave a used filter in the machine when it's not in use as they become a breeding ground for micro organisms.

[heus]

I sometimes go through 4 a day

[Thompson's Tree Farm]

I'm supposed to check the RO sap filter before I run it, but I don't know what I'm looking for. I've put 800 gallons of raw sap through it so far. It's turning tan, but I don't know if that is staining from when I flushed the preservative out. Any input is appreciated.

Sean

You should not use the same filter that you used to flush the presevative as you do for raw sap!

[SeanD]

Yikes. Thanks for the info. I just went and pulled it out. A new one is going in before the next boil!

[MapleMark753]

Like you, I've got the 125, mines upgradable. I've found that we change the filter at varying rates. Sometimes I'll change it daily, sometimes two days, sometimes three days. I always check it daily, and consider flow and pressure. What micron rating filter are you using? Smaller (5ish) may filter better initially, but also may plug a bit earlier. I use the Sterling 10 micron, and buy them by the case.
take care, Mark

[maple flats]

Real bad idea to go more than 1 day on a filter. The filter catches micro organisms and then you store it in a heated room where they will multiply. That is a false economy. At $3 and change, you should change at least daily, more often if the inlet pressure gauge drops below 20 PSI.

[MapleMark753]

Well, I'll agree that its a real good idea to check the RO filter daily, and change when needed every time. That's what Ray puts right on the RO, "check filter daily", which we do and usually do change daily as well. But on occasion a filter does last longer and without any poor result for the machine or the final syrup.
take care, Mark