RO/DI Setup with Minimum 50psi

[stormrider]

Hi reefers, 

I got myself a 2nd hand RODI unit that comes with a pump and had set it up for the first time. I had run it for at least 15mins but the pressure gauge doesnt move. 

How to get a minimum 50psi pressure?

Input of TSI was 54 and Output of TSI was 0.

I had not open the cartridges... its a a very difficult task to open them too.

Appreciate RODI users to advice. Thank you.

 

[munlok]

Please check your cartridges. Maybe is covered by plastic.


Sent from Singapore Reef Club mobile app

[stormrider]

10 hours ago, munlok said:

Please check your cartridges. Maybe is covered by plastic.


Sent from Singapore Reef Club mobile app

Thanks munlok.

i had open up the cartridges. Should i change this? I think it should not be yellowish.

the blue membrane filter cant be pull out... but i think it suppose to last a long time?

[SubzeroLT]

Pressure gauge shows zero? Perhaps the gauge is spoilt (happened to mine before). Madpetz sells replacement parts.

 

The sediment filter (the yellowish one shown in your pic) will get yellow/brown after some months of use - it is normal. 

Personally i change the sediment filter & 2 carbon blocks as a set once a year as part of regular maintenance. Some folks stretch it to 2yrs. It really depends on usage (tank size).

 

The RO membrane is not easily removed. Need to use pliers, so i'd suggest not taking it out.

Change the RO membrane  if the 'clean water' output slows down a lot or if the TDS after RO membrane is very high. For reference, TDS is about 5 after my RO membrane (before DI resin).

 

[stormrider]

Thanks SubzeroLT.

I will bring the unit to Madpetz and see if changing gauge helps.

My pressure gauge always at Zero.

And with pump activated, output of the water is with pretty good flow. Without pump, the output is slow. (no experience with RODI). 

BTW, do we need to calibrate the TDS meter?