8
Environmental Protection / Disposal
8
Environmental Protection / Disposal
Environmental protection is a fundamental principle of the
Bosch Group.
Quality of products, efficiency and environmental protection are equally
important objectives for us. All legislation pertaining to the environment
is strictly observed.
Packaging
For the packaging, we participate in the country-specific recycling
systems, which guarantees optimal recycling. All packaging materials
used are environmentally-friendly and recyclable.
Old appliances
Old appliances contain materials that should be recycled.
The relevant assemblies are easy to separate, and all plastics are
identified. This allows the various components to be sorted for
appropriate recycling or disposal.
9
Maintenance
▶ Allow the tank to cool down sufficiently before performing any
maintenance.
▶ Carry out cleaning and maintenance procedures in the specified
intervals.
▶ Remedy all faults immediately.
▶ Use original spare parts only!
▶ The tank must be inspected annually and maintained as required.
9.1
Testing relief valve
▶ Check the T&P safety valve annually.
9.1.1 Drain the tank
▶ Isolate the tank on the DHW side from the piping by closing the shut-
off valves.
▶ Open a high-level tap to vent the system.
▶ Open drain valve ( Fig. 2 [12], page 6).
14
9.1.2 Descaling/cleaning the tank
▶ Close the cold water inlet shutoff valve.
▶ Drain the tank via the drain valve by opening the highest faucet.
▶ Check the tank interior for contamination (lime scale deposits,
sediment).
In order to improve the cleaning effect, heat up the
indirect coil prior to hosing them down with a water jet.
The thermal shock effect helps to loosen encrustations
(e. g. lime deposits).
NOTICE: Damage to the enamel finish!
▶ Do not use tools for the removal of deposits from the
interior of the tank as it may damage the enamel liner.
▶ Hose down the inside of the tank.
72 Psi (5 bar)
50 °F (10 °C)
Fig. 14 Hosing down the inside of the tank
▶ Use a wet & dry vacuum cleaner with plastic suction hose to remove
the residues.
▶ Seal the plug back into the inspection port.
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