Strip down a Comet Novo mixer tap

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Strip down a Comet Novo mixer tap

Post by Betty's Mum on Thu Jun 23, 2016 10:34 am

Hi Folks

I need to tackle 'O' ring replacement in my Comet Novo mixer in the bathroom.  At the moment I have to switch the pump off when the water is not in use as the tap keeps on running - not full on, but slowly.  The micro switches appear to be working on each tap so I am guessing the 'o' rings need sorting but to be honest, I have no idea how to take these things apart and I really don't have the finances to get a moho engineer to have a look (especially after one fitted the Heki roof backwards last year!)

Google searches appear fruitless and I can't even find any kind of diagram of all the components so hopefully there is someone here who can advise how I achieve this (not that I can even fill the water tank as I am patiently waiting until the day I manage to get the tank filler cap off to replace it with a new, working one ... sensored1  !)

Thanks in anticipation
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Re: Strip down a Comet Novo mixer tap

Post by daisy mae on Thu Jun 23, 2016 11:00 am

Ah! Betty so sorry you are having problems, the water fill tap that was on my Topaz and is on my Clubman can sometimes be a bit tricky to get undone, I  push in and quarter turn, then I take out my keys as easier without them then turn it  anti clockwise.

Cannot help re mixer, sorry.
Hope you get it sorted soon.
Regards,
Margaret
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Re: Strip down a Comet Novo mixer tap

Post by isitfridayyet on Sat Jun 25, 2016 1:40 pm

Hi, I will be watching this with interest I have exactly the same problem but I have brought a new mixer replacement tap to fit in. But if I can repair the old one! 
I have an old mixer tap that I took out a couple of years ago but cannot see anyway that it will come apart.
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Re: Strip down a Comet Novo mixer tap

Post by boxerman on Sat Jun 25, 2016 2:23 pm

I've copied a page I wrote on replacing these 'O' rings for the RTMR website into a .docx and also an .odt file. I cannot attach them to this post but praps Roli might want to put one in the factsheet section?

In the meantime, PM me your email add and I'll send it to you [both] if you want it.

Frank
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Re: Strip down a Comet Novo mixer tap

Post by Betty's Mum on Tue Jun 28, 2016 11:00 pm

Thank you for the instructions Frank, clear and easy to follow.  

The suspect tap did have a broken O ring but the valve body was fairly well gunged in place and I managed to break it attempting to remove it ...grrr!  New one on it's way (£4.99 good old eBay) complete with new O rings which is good as the Homebase 'selection box' didn't have the one I needed  allthumbz  

And Margaret, thanks for the tips.  Am pretty sure I had attempted all eventualities already but with your instructions in mind (lefty loosey) and probably a lot of luck, the water filler cap came off first attempt!  As for fitting the new one on ...  tap_fingers

 Cheers folks, Tizzie
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Re: Strip down a Comet Novo mixer tap

Post by daisy mae on Wed Jun 29, 2016 7:48 am

Pleased you are sorted Tizzie up!
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Re: Strip down a Comet Novo mixer tap

Post by boxerman on Wed Jun 29, 2016 9:27 am

Glad I could be of some assistance.

Frank
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Micro switched or not?

Post by CarryOnCamping on Tue Jul 05, 2016 7:44 am

I've ordered a replacement Comet Novo mixer for my tip up basin. The old one had two micro-switch tails on both hot and cold taps which have been cut off. Was this how they left the AS factory on pressurised systems? I'd like to know before I go cutting off the cables on the new unit.
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Re: Strip down a Comet Novo mixer tap

Post by boxerman on Tue Jul 05, 2016 8:12 am

The pump has a pressure switch, you don't need the micro switches.
Mine aren't cut off, just left dangling.

Frank
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Re: Strip down a Comet Novo mixer tap

Post by CarryOnCamping on Tue Jul 05, 2016 11:45 am

Thanks Frank.
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Re: Strip down a Comet Novo mixer tap

Post by Betty's Mum on Sun Jul 31, 2016 10:07 pm

Just been out for the first time since starting this thread.  New filler cap must have been faulty and five of us couldn't get it off ... grrrr!  Eventually a friend used a pen knife to prise things apart and it came off, piece by piece.  Re-assembled, tested (gingerly), all working - phew!  

After breaking one of the spindles trying to get the flaming thing off I got two replacements (one kept for spare).  I had also managed to mangle the micro switch and purchased two of them (keep one for spare!), but they didn't look right ... grrr, and I decided not to try fitting it.  Found the 'missing' part of old micro switch and put it back together.  Now to test my handy work with the taps.  So, switched on pump to pressurise system and the tap head flew off - hahahahaaaa  lol4   Gave it a good, solid push down (I hate using force, but it needed to click to ensure it was secure), switched pump back on and (yes, you guessed it) the other tap head flew off!!  Sorted?  Yes, but no ... shower now leaking  shrugg 

I have the knowledge and a spare, but the shower mixer is vertically mounted and prising the spindle off was a bit trickier.  I did not want to break another one (or micro switch) trying so opened the micro switch a bit, slid a lanyard strap underneath it and gently pulled and wiggled the spindle off without doing damage to either the spindle or the plastic tap unit itself. 

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So there it is, water system back up and running (literally!) after a year and a half - I took my time, but got there in the end  Hi-Five 

Many thanks for you help Frank and Margaret  thanksverymuch

Tizzie x
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Re: Strip down a Comet Novo mixer tap

Post by boxerman on Sun Jul 31, 2016 10:46 pm

Hate to say this but its almost guaranteed that the micro switches aren't connected. The pump should have a pressure switch which detects when the taps are opened.

Frank
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Re: Strip down a Comet Novo mixer tap

Post by vwt4 on Mon Aug 01, 2016 2:07 pm

yes Frank is correct, don't need the micro switches, interesting to see the shower tap are of comet novo design, mine is a metal mixer tap quite small really. (hope it does not go faulty)
mike
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Re: Strip down a Comet Novo mixer tap

Post by Mayfield on Wed Aug 03, 2016 7:07 pm

My topaz basin mixer hot water tap was leaking, I levered the tap out  with a screwdriver, 'o' ring was ok so ajusted the plastic screw tread to make tighter contact, pushed tap back in and works ok. As frank says the cables are cut off behind tap. Brian.
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