To Know How - GROHE

Thermostat shower mixer 34 679 Thermostat bath mixer 34 367
Maintenance instructions
Shut off hot and cold water supply!
Please perform disassembly in specified order. Assemble in reverse order.
Thermo-element (shower):
1. Lever out cap.
2. Unscrew and remove screw and pull off temperature
control handle.
3. Screw off regulating nut.
4. Remove clip.
5. Pull off stop ring and splined adapter.
6. Unscrew and remove thermoelement using a 22mm
open-ended spanner.
Thermo-element (bath):
1. Lever out cap.
2. Unscrew and remove and pull off thermostat knob.
3. Unscrew and remove adjusting nut.
4. Pull off stop ring.
5. With a 24mm open-ended spanner, unscrew and
remove thermoelement.
Non-return valve:
1. Disassemble mixer in reverse order, see Fig. [1].
2. Remove dirt strainer.
3. Remove union nipple using a 12mm allen key by
turning clockwise (left-hand thread).
4. Remove non-return valve.
Headpart:
1. Lever out cap and unscrew and remove screw.
2. Pull off shut-off handle, splined adapter and economy
stop.
3. Unscrew and remove ceramic headpart using a 17mm
open-ended spanner.
Readjustment is necessary after each maintenance operation
on the thermostatic cartridge. (s. Seite T 60).
Maintenance Aquadimmer, s. Seite T 54.
How to adjust economy stop, s. Seite T 65.
T 20