Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Simon@ Clearview contractors on November 13, 2013, 06:57:07 pm

Title: MERLIN new membranes and pre filter SLOW production HELP
Post by: Simon@ Clearview contractors on November 13, 2013, 06:57:07 pm: Alright guys, I'm wondering if anyone has encountered problems when buying and fitting all new pre-filters and new membranes?

Basically, I've moved house in the last couple of weeks, only 1.5 miles away but the TDS has gone from 35 at the tap upto 169. The merlin was running ok but nowhere netr as fast as what it was when I'd replaced them previously.
Now the system seems to have slowed down even more, there is only about 300lt in 9hours of running :o :o :o

Yesterday morning a hooked up an old RO system to the wase and this seemed to increase the speed of the water somewhat but today, very very slow :(

Its approx 40psi at the tap

Any advice would be greatfully recieved.

Thanks in advance, Simon :)
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Don Kee on November 13, 2013, 07:58:16 pm: Do you get alot of waste (well more than notmal for a merlin?)
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: rah on November 13, 2013, 08:08:16 pm: Could it be air, or the filters not purged properly?

Rob
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Simon@ Clearview contractors on November 13, 2013, 08:26:16 pm: Never really noticed the waste Don. Cheers
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Simon@ Clearview contractors on November 13, 2013, 08:27:47 pm: how would you purge a filter rah? never heard of this before

Simon :)
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Shane O Neill on November 13, 2013, 08:31:53 pm: hi Simon,i had the very same problem few days ago & im waiting on a booster pump at the moment to be delivered to hopefully cure my problem....I think u are n the same boat with only 40psi from tap
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Simon@ Clearview contractors on November 13, 2013, 11:15:11 pm: So is this a pressure issue? how much are booster pumps?

Thanks
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: dannymack on November 14, 2013, 06:21:04 am: Add a booster pump Simon if not got one already, it won't just speed up the water flow it will prolong the life of filters & resin
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: andyM on November 14, 2013, 07:13:27 am: 40 psi is quite low.
That's about the same water pressure that I have at the tap and I need to use a booster pump.
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Shane O Neill on November 14, 2013, 10:26:39 am: Quote from: Simon@ Clearview contractors on November 13, 2013, 11:15:11 pm
So is this a pressure issue? how much are booster pumps?

Thanks

I was recommended this Simon http://www.purefreedom.co.uk/24v-aquatec-reverse-osmosis-booster-pump-power-supply-p-274.html#reviewsDefault
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Shane O Neill on November 14, 2013, 10:29:00 am: http://www.cleanitup.co.uk/smf/index.php?topic=178522.0
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Smudger on November 14, 2013, 11:10:22 am: Get yourself a booster pump that is capable of running 24/7 the linked one is not really upto serious use

I'll find a link later but currently at the hospital with daughter
And is pita using phone

Darran
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Smudger on November 14, 2013, 11:15:00 am: http://www.anglianpumping.com/products/dab-jet-pumps-230v

Had this for 4 years got my Merlin producing 100+ ltrs ph TDS of 320 down to 12

Darran
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Simon@ Clearview contractors on November 14, 2013, 07:01:25 pm: Quote from: Smudger on November 14, 2013, 11:15:00 am
http://www.anglianpumping.com/products/dab-jet-pumps-230v

Had this for 4 years got my Merlin producing 100+ ltrs ph TDS of 320 down to 12

Darran

Thanks for the link Darran, what model number is yours as the prices vary a lot.

Also are these pumps suitable for outdoor use or do they have to be kept sheltered?

Thanks again, Simon
Title: Re: MERLIN new membranes and pre filter SLOW production HELP
Post by: Smudger on November 14, 2013, 08:38:28 pm: I've got the 112 which boosts my mains from 30 to 80

If you ring them they will advise on what you require, yes they are ip67 or whatever so outside is ok but not underwater!

Bear in mind if outside water may freeze inside the pumping chamber and be damaged if you turn it on

Darran