Maintenance - Grohe Grohtherm Ergomix Bedienungsanleitung

Adjusting the temperature range, see figs. [6].
• With this thermostatic mixer, the hot water end-stop
can be adjusted to a temperature between 35 °C
und 45 °C.
1. Adjust temperature to 20 °C.
2. Remove knob top plate (F) and temperature control
knob (H).
Caution ! Regulating head (I) should not be adjusted.
3. Pull off red end-stop (R) and refit with the arrow (U)
pointing to the maximum desired temperature.
4. Install temperature control knob (H) in such a way
that the 20 °C mark on the knob coincides with the
mark (Q) on the mixer body.
5. Install knob top plate (F).
Thermal desinfection, see fig. [6].
1. Remove knob top plate (F).
2. Turn the temperature control knob (H) to the hot
water end-stop.
3. Open stopcock and let hot water of at least 70 °C
run for three minutes.
4. Turn back temperature control knob (H) to cold
water end-stop and reinstall knob top plate (F).
Prevention of frost damage
When the domestic water system is drained,
thermostat mixers must be draind separately, since
non-return valves are installed in the hot and cold
water connections. For this purpose, the mixer must
be removed from the wall.
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Maintenance

For maintenance, see figs. [7], [8], [9] and fold-out
page II.
Shut off hot and cold water supplies, in connection
with thermostatic mixers 34 020 and 34 021 use
adjustable units with flow control valves, see fig. [7].
I. Non-return valve
1. Disassemble mixer in reverse order, see fig. [1].
2. Remove dirt strainer (S).
3. With a 12mm hexagon socket spanner, remove
union nipple (L) by turning clockwise (left-hand
thread).
4. Remove non-return valve (T).
Reassemble in the reverse order.
II. Thermoelement
1. Remove screw (E) and pull off knob top plate (F).
2. Unscrew and remove screw (G) and pull off
thermostat knob (H).
3. Unscrew and remove adjusting nut (I).
4. Pull off stop ring (K).
5. With a 24 mm open-ended spanner, unscrew and
remove thermoelement (A).
Reassemble in the reverse order.
Readjustment is necessary after every maintenance
operation on the thermoelement (see Adjustment).
III. Ceramic head part
1. Remove elbow lever (D).
2. Remove protective cap (E).
3. Remove stop ring (F).
4. Remove screw (G) and pull off snap insert (H).
5. Unsrew ceramik head part (J) and renew if
necessary.
Assemble in reverse order.
The following must be observed when fitting the stop
ring (F).
• Turn ceramic head part spindle clockwise towards
stop, see fig.[8].
• Fit stop ring (N) over spindle so that the stop
face (V) rest against bevel (W), see fig.[9]; then turn
anti-clockwise and continue assembly procedure.
IV. Unscrew and clean flow straightener (13 960),
see fold-out page I.
Inspect and clean all parts, replace if necessary and
grease with special valve grease (ref. No. 18 012).
Use only genuine Grohe replacement parts.
Replacement parts, see fold-out page I ( * = special
accessories).
Care
For directions on the care of this thermostat mixer,
please refer to the accompanying Care Instructions.
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