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Thermostatic Cartridge
Your shower is fi tted with a Thermostatic Cartridge. Should you need to remove or replace the cartridge
for maintenance or replacement, follow the instructions below.
Q: I am having to turn the dial round as far as it will go to the hottest setting and the water is
only just warm.
A: Your Thermostatic Cartridge has showed signs of failure. You will need to replace the
Cartridge.
Q: Why did my Thermostatic Cartridge fail?
A: Hard Water areas will result in calcifi cation, which will build up in the Cartridge. Other
reasons might be age of the Cartridge or even dirt or debris collecting in the Cartridge from
the pipes.
BEFORE STARTING ENSURE THAT THE WATER SUPPLIES ARE DISCONNECTED OR ISOLATED
It is imperative that the water supply to your shower in between 1 and 3 bar as exceeding this may
damage the Thermostatic Cartridge.
First check behind the shower. On the bottom dial, is there a small screw in the valve body holding
the thermostatic cartridge in place? If so, remove this and replace when finished
From inside the shower, on the lower of the three dials,
remove the chrome coloured plastic cap that is fi tted on
the opposite side to the chrome lug.
The chrome cap will just pull off .
Keep the cap safe.
Using a 2.5mm Alan key, insert this into the hole where
the chrome cap was fi tted and loosen the grub screw
about 1 turn to loosen.
DO NOT UNSCREW FULLY.
Now remove the chrome dial.
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