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Calibration of a thermostat

How to calibrate your GROHE thermostat

To get your shower or bath water temperature right, it is important that the thermostat is being calibrated. This is a simple procedure with a GROHE thermostat.
  1. Open the shut-off valve and check the temperature of the water with a thermometer.
  2. Lever out cap.
  3. Remove screw.
  4. Detach temperature control handle.
  5. Turn regulating nut until the water temperature has reached 38 °C.
  6. Install temperature control handle so that button points towards the front.
  7. Screw in screw.
  8. Refit cap.