Will my new FM Mattsson shower & taps work on my low pressure system?

FM Mattsson units are designed to perform at their optimum at between 0.5 - 6.0 bar. We do not recommend FM Mattson units be fitted to systems with pressure below 0.5 bar

What do I use to clean my FM Mattsson units?

Units are best cleaned using a soft cloth with mild detergent. Under no circumstances should acids in any form be used or any abrasive cloths or cleaners as this will damage the unit.

There is no water coming out of my shower mixer?

First check that there is no interruption to water supply either hot or cold. If you do have supply to the unit the problem is likely to be due to debris coming down the line existing pipework and blocking the supply inlets to the unit. FM Mattsson units are fitted with strainers to avoid internal contamination of the units by debris. Turn off the water supply remove the unit from the wall fixing plate and clean the wire strainers inside the fixing nuts then reattach.

Water temperature from my FM Mattsson mixer is fluctuating alternately between hot and cold?

This may be due to the unit being fitted incorrectly. Check that the cold supply is on the right and hot supply is on the left.

The water out of my mixer is not hot enough?

Firstly check that you have sufficient hot water supply. Secondly check that you have depressed the childproof anti scald device on the temperature control (right hand side of mixer) to enable you to increase the temp beyond 38?. If you have done this and reached to full extent of adjustment you may need to recalibrate the unit to suit your own specific requirements (See Re Calibration in Manual)

The Control handles on my mixer are getting stiff?

First check that no materials have fallen between the handle and mixer body that may prevent free movement. If no obstruction is found then the most common cause is the build up of scouring powder/paste debris within the control handles.  FM Mattsson units should not be cleaned with scouring powders, pastes or acid solutions as debris will build up between the handles and body of the mixer and over time will erode the control surfaces and ultimatly damage the cartridge . Units should only be cleaned with a mild detergant and diluted limescale remover when required.

To rectify problem remove handle and extract debris and replace. In cases where significant damage has been caused, handle and cartridge may need to be replaced.

As I am sure you will notice this section is very short. This is due to the fact that as a result of the technical excellence of FM Mattsson units we very seldom have any problems. If however you experience a problem that we have not covered please contact us.

Alternatively

browse or download our maintenance manual by clicking here