Periodic Maintenance; Instructions For Protecting The Environment - Bosch Tronic 3000 T Installation Instructions Manual

18 | Εlectric water heater
phere.
- In order to secure the water heater's safe
operation, the safety return-valve must
undergo regular cleaning and inspec-
tions for normal functioning /the valve
must not be obstructed/, and for the re-
gions with highly calcareous water it
must be cleaned from the accumulated
lime scale. This service is not provided
under warranty maintenance.
All alterations and modifications to the wa-
ter heater's construction and electrical
circuitry are forbidden. If such altera-
tions or modifications are established
during inspection, the appliance's war-
ranty shall be null and void. Alterations
and modifications shall mean each in-
stances of removal of elements incorpo-
rated by the manufacturer, building in of
additional components into the water
heater, replacement of elements by simi-
lar elements unapproved by the manu-
facturer.
- These instructions shall also apply to wa-
ter heaters equipped with a heat ex-
changer.
- If the power supply cord (of models that
have one) is damaged, it must be re-
placed by a service representative or a
person with similar qualification, to
avoid any risk.
- This appliance is not intended for use by
persons (including children) with re-
duced physical, sensory or mental capa-
bilities, or lack of experience and knowl-
edge, unless they have been given
supervision or instruction concerning
use of the appliance by a person respon-
sible for their safety.
- Children should be supervised to ensure
that they do not play with the appliance.
IX. Periodic maintenance
Under normal use of the heater, under
the influence of high temperature, lime
scale /the so-called lime scale layer/ is
deposited upon the heating element's
surface. This worsens the heat exchange
between the heating element and water.
The heating element's surface tempera-
ture increases along /of boiling water/.
The thermoregulator begins to switch on
and off more frequently. A ''deceptive"
activation of the thermal protection is
possible. Due to these facts, the manu-
facturer recommends preventive mainte-
nance of your water heater every two
years by an authorized service center or
service base. This protective mainte-
nance must include cleaning and inspec-
tion of the anode protector (for water
heaters with glass-ceramic coating),
which shall be replace with a new one if
need arises. Each preventive mainte-
nance of the said type must be entered
in the appliance's warranty card and
must outline date of performing the pre-
ventive maintenance, company perform-
ing the preventive maintenance, name of
person performing the preventive main-
tenance, and signature.
Non-fulfilment of the above requirement
may terminate the free of charge mainte-
nance of your boiler.
THE MANUFACTURER DOES NOT BARE
THE RESPONSIBILITY FOR ALL CONSE-
QUENCES CAUSED BY NOT OBEYING
THE INSTRUCTIONS, GIVEN HEREBY.
Instructions for protecting
the environment
Old electric appliances contain
precious materials and thus
should not be thrown together
with the household litter. We
kindly ask you make your active
contribution for protecting the
resources and the environment
by handing over the appliance in
the authorized buy-back stations
(if such exist).
EN