[dmlservices]

recently my ro pressure dropped from 50-60 psi , i have had it for 2 years, purhased from gardiners , have reguarlly changed pre filters , any way it has dropped to 25 psi , tap pressure is still the same . i thought it might be pre filters but have changed these - makes no difference . could restictor need replacing , or membrane's ? .any body had similar happen
daz

[Alex Gardiner]

It could be that the flow restrictor on the waste needs replacing.  If this has gone, it would explain the lack of back pressure on the pressure gauge. 

It could be a partial blockage in one of the pre-filter housings or connectors.  If it is a partial blockage, unscrew the housings, clean them out and have a look to see if there is anything in each of the connectors between the housings.

[dmlservices]

cheers alex , fliters are fine, have cheked pressure after filters , it is fine , pressure drops when i re connect to membrane , and rest of system. so will try a new flow restrictor
daz

[dmlservices]

hi all. after replacing filters , restrictor , ihave found the source of my problem. i ordered a set of pre filters from gardiners , but being out of stock of the carbon granular filters , they sent 2 filters and advised 3rd to follow , any way i fitted the 2 they sent , still low pressure , tap pressure is 60 psi , but going through ro pressure dropped to 25 psi so i then ordered a flow restrictor from ro man , only to recieve an e mail to say , 'order on hold out of stock of o rings' . i emailed back to ask if they would send restrictor seperate ,which they did arrived this morning , problem solved  or so i thought  fitted it still the same , so i stripped ro down , then ran water through each vessell head , to see if any were blocked, i then put glass filter containing the sediment filter , still fine , then the same with the new carbon filter. stiil fine , then i tried the middle filter -the one i had left inchanged , was not flowing well , blocked housing i thought , so removed filter and glass housing ,ran water through , was fine , re installed filter -not flowing through well , so the blockage was caused by the old filter. took it out assembled every thing back together - minus old filter - pressure back up to 50- 60 psi . just need to get new filter from alex, any ideas when it will be delivered alex?, and will i be all right running system - middle filter , and tds is stable .
daz

[Alex Gardiner]

You should have got the missing filter by now as I know they were back in stock a couple of days ago.  Hopefully it will come in the post tomorrow. If it doesn't, let us know and I can chase it up on Monday. As long as you have one carbon filter fitted (especially a brand new one) it will be protecting the membrane from chlorine.

[dmlservices]

cheers alex , rang kirsty this week advised would be with me on thursday , must have got delayed somewhere.
daz