Mira Reflex EV Thermostatic Bar Mixer Shower

[Rengox]

Can anyone help _ I'm at my wits end!

I've moved into my new house which has the Mira Reflex shower. It's a great shower and very pleasant to stand under but as the colder temps approach I've found it's not quite as hot as I'd like. I've depressed the overide button on the temperature handle and turned it fully anti-clockwise and it's nice, but not quite there.

The instruction booklet states that I can reset the temperature to my personal preference by pressing the override button and pulling the temperature handle off and changing it from that point. Except..it will not come off! I've pulled and pulled, I've sprayed with WD40, I've wriggled it - it's not budging. I even emailed Mira to make absolutely sure I wasn't being an idiot and there wasn't a hidden screw somewhere that I hadn't spotted. Their reply "You may need to use force".

I don't want to use so much force that I rip the whole thing away from the wall! I've uploaded a photo of the handle - is there a trick to this I'm missing? This is a pretty new shower, it was only installed at the beginning of this year and then the house was empty till I moved in at the beginning of August - surely it can't be seized up?

 

[Rodders53]

https://resources.kohler.com/plumbing/mira/pdf/1196840-w2-mira-reflex-installation-and-user-guide.pdf

Page 7 of that manual shows a removable end cap, and a screw holding the knob in place. Is there a visible line? If so a thin plastic blade/pry should help?

 

[Rengox]

No there's no visible line at all. The manual that came with mine is slightly different and says just to pull the handle. I've attached a pic. Thanks for the suggestion though!

 

[Rodders53]

In that case I suggest some sort of tough but thin plastic lever to assist the initial movement... The sort of pry or opening tool used on phones, laptops and remote control cases, perhaps? Two, perhaps, one on top and the other on bottom to help 'rock' or waggle it off?

Looks to be a ridge on the main body where the (plastic?) handle meets for such a tool to get in. Use decent rubber gloves or similar for a grip to pull.

You are wasting time and money on trying lubricants as it is the spline at the end that is 'sticking'.

Once off and cleaned up (to remove the WD40 traces) I would smear a little silicone grease over the spline to maybe aid future removal.