FM Mattsson 9000 Series Operating Instructions

TMV 2 with
Requirements TMV 2
TMV 3 with
NHS Requirements.
1000237

Operating instructions

The left knob controls the water flow rate. The right knob
controls the water temperature. Turned clockwise the mixer
will provide cold water. The more it is turned anti-clockwise
the warmer water is supplied. After one complete turn, the
override button must be pressed in order to obtain warmer
water. The knob can be turned another 1/2 turn after releasing
this safety device. The delivered water will then be
warmer than normally needed for bath or shower.
The mixer is also available with temperature knob without
override button (for limited temperature regulation) and with
a cover instead of a knob (for fixed temperature setting).
Changing over to the shower outlet
(Tub mixers)
When the valve is opened, the water is supplied through the
spout. If instead water from the shower is desired, the diverter
button is pulled upwards. When the valve is shut off, the diver-
ter automatically resets to spout flow. Tub mixer FMM 9203
is not equipped with a connection for shower.
Function
The temperature is regulated in the mixer by a temperature
control and pressure balanced interplay. The pressure balan-
cing piston, operating inside the regulating shuttle, is first
handling the cold and hot water. The piston continuously
finds the position where cold and hot water gets equal pres-
sures when entering the temperature regulating function.
Pressure balancing
piston
Every mixing valve is tested and approved.
The mixing valves are subjected to the following test:
- Tightness test with open and closed flow control.
- Tightness test of hot and cold water seat.
- Fail safe test.
- Cold water pressure 100 kPa > hot water pressure – Checking the mixed water temperature.
- Hot water pressure 100 kPa > cold water pressure – Checking the mixed water temperature.
Thermostatic/Pressure balanced mixer
Cold water
Hot water
Regulating shuttle
Tested and approved by FM Mattsson.
9000-series
Closing and flow control knob
Diverter button
The position of the regulating shuttle is controlled by the
temperature knob, or by the spindle for fixed temperature
setting. The sensor element is located between the shuttle
and the knob and compensates for the temperature fluc-
tuations of entering cold and hot water from the supply.
The outgoing mixed water is delivered with an even, stable
temperature.
Sensor element
English
Rev. 001 – 09.11
Override button
Colder
Warmer
Temperature
control knob
Temperature knob