Werbung
Verfügbare Sprachen
Verfügbare Sprachen
• We ask you to always provide the BOSCH serial number (SNR/TTNR)
of your appliance when calling in a customer service engineer.
5
Maintenance instructions
CAUTION:
▶ Maintenance work must only be carried out by a qualified
professional, pursuant to VD E0700 or local regulations.
• The appliance must be isolated from the power supply in all poles.
5.1
Decalcifying
Do not use a decalcifying pump. This would decalcify the heating flange
but would damage the protective anode and the interior wall of the tank.
Procedure:
• Disconnect the floor-standing water heater from the power supply.
• Remove the switchroom cap.
• Disconnect the heating flange and remove.
• Decalcify the heating flange.
• Remove loose pieces of lime from the floor-standing water heater.
• Fit the heating flange and connect in accordance with the circuit
diagram.
• Fit the switchroom cap.
5.2
Checking the protective anode
The protective anode must be removed prior to checking and must be
checked after the first two years of use and replaced if necessary.
It is situated next to the hot-water outlet nozzle and is covered by the
thermal insulation (recognizable by a protrusion).
• Unzip the protective jacket. Cut out the thermal insulation with
a knife.
• Screw out the protective anode and check.
If the protective anode is used up, it must be replaced with a new one.
If there is insufficient space to install a pole anode, install a chain anode.
The protective anode must have a good metallic conduction with the
floor-standing water heater. Cover the screwed connection of the anode
with the piece of thermal insulation material which was previously cut
out.
• Zip up the protective jacket.
Note: The protective anode, located in the floor-standing water heater,
must be checked for the first time after two years and replaced if
necessary. The qualified professional is familiar with the local water
quality and will specify when the next maintenance check should be
carried out.
5.2.1
Safety valve
• Vent the safety valve until the full water jet is flowing out.
• Close the safety valve after carrying out the check.
Safety equipment (Fig. 9)
5 Thermal cut-out
6 Corrosion protection anode resistor (390 Ω)
7 Heating flange
8 Reset button
The thermostat and thermal cut-out are located together in the heating
flange. If the thermal cutout disconnects the appliance due to
a malfunction, the whole unit must always be replaced. The cause of the
malfunction must be eliminated by a qualified professional.
The heating flange is connected with the tank via the corrosion protection
anode resistor. The corrosion protection anode resistor serves to equalise
electrical potential differences and prevents current-related corrosion to
the heating elements. The anode resistor is not to be damaged or removed
during servicing (for mounting position, refer to figure).
6
Troubleshooting
6.1
For users
Problem
Cause
The water does not
There is no power.
heat up.
The outlet flow rate is
The aerator in the tap
low.
or shower head is
scaled up or
contaminated.
Table 5
6.2
For professional plumbers / contractors
Problem
Cause
The water does not
The high limit safety
heat up.
cut-out has responded
because the
thermostat is faulty.
The high limit safety
cut-out has responded
because the
temperature has
dropped below -15 °C.
The booster heater
does not switch on.
A heating element is
faulty.
The safety valve drips
The valve seat is
when the heating is
contaminated.
switched off.
Table 6
7
Environmental protection/disposal
Environmental protection is a fundamental corporate strategy of the
Bosch Group.
The quality of our products, their economy and environmental safety are
all of equal importance to us and all environmental protection legislation
and regulations are strictly observed.
We use the best possible technology and materials for protecting the
environment taking account of economic considerations.
Packaging
Where packaging is concerned, we participate in country-specific
recycling processes that ensure optimum recycling.
All of our packaging materials are environmentally compatible and can
be recycled.
Used appliances
Used appliances contain valuable materials that can be recycled.
The various assemblies can be easily dismantled. Synthetic materials
are marked accordingly. Assemblies can therefore be sorted by
composition and passed on for recycling or disposal.
Solution
▶ Check the fuse/
circuit breaker in
your fuse box/
distribution panel.
▶ Clean and/or
descale the aerator
or shower head.
Solution
▶ Replace the
thermostat and
press the high limit
safety cut-out reset
button.
▶ Press the high limit
safety cut-out reset
button.
▶ Check the
contactor and
replace if required.
▶ Replace the
heating element.
▶ Clean the valve
seat.
Werbung
