Hi,
I have a Monsoon 3.0 Bar twin pump that is fed from a hot water tank and a large (to me?) cold water tank that's in the loft. This is connected to a thermostatic bath and shower mixer.
Recently my shower and bath taps have been running very slowly compared with their past performance. The pressure is still enough to allow me to switch the mixer to shower, but it's nothing impressive :( Also, the cold water is drying up faster that the hot!! If you put the temperature knob on the 38deg setting it comes out too hot, even right round on cold it's still not that good and we have started to have to add cold water to the bath!!
I originally thought that it was the pump to blame, so I took it out and cleaned it through with weak citric acid solution to get rid of the scale, there was a little bit there, but nothing much and once re-fitted and bled of air it was slightly improved but not by much! I have done some "devilishly ingenious" tests and am sure that the pump and everything leading up to it are fine, but where do I go from here??
I am now guessing that there is lime scale in the mixer, and I have read that the metallic strip for the thermo can get furred up. I am thinking of disconnecting the pipes from the pump and forcing weak citric acid solution through them and out of the bath tap, does anyone think that this will work, or have any idea what my problem is (no obvious answers please, and nothing even hinting at a "weak citric acid solution" fetish!)
Thanks in advance
Dave