Daikin EKHWP300B [21/28] Periodic checks
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Daikin EKHWP300B [21/28] Periodic checks

Daikin EKHWP500B [21/28] Periodic checks
7 x Service and maintenance
Daikin EKHWP300+500
Daikin High-performance hot water storage tank
008.1618744 – 08/2015
Installation and maintenance manual
21
7 Service and maintenance
The Daikin EKHWP is practically maintenance free as a result of
its design. No corrosion protection equipment is required
(such as sacrificial anodes). This means there is no ne
ed for
maintenance work such as changing the protective anodes or
cleaning the inside of the storage tank.
Regular inspection of the domestic hot water storage tank guar-
antees a long working life and fault-free operation.
WARNING!
Live parts can cause an electric shock on contact and
cause fatal burns or injuries.
● If there is a Booster Heater or regulation and pump
station installed in the hot water storage tank then
these components must be isolated from the
power supply before starting the inspection and
maintenance work (e.g. fuse, main switch switched
off and secured against inadvertent switching on
again).
WARNING!
All work performed on live components must be
carried out in accordance with the proper procedures,
otherwise there may be a danger to the life and health
of individuals and the function may be impaired.
● Rectification of damage to live components may
only be carried out by heating specialists
authorised and recognised by the energy supply
company.
7.1 Periodic Checks
The filling water can evaporate slightly over a period of time as a
result of the design. This process does not represent a technical
fault, but is rather a physical property which requires periodic
checking and correction of the water level, if necessary, by the
operator.
● Visual
check of the water storage tank level (filling level
indicator)
Top up the water if necessary (see chapter 3 "Set-up and
installation", section 3.3.2), and also determine the cause
of the low water level and rectify it.
7.2 Annual inspection
● Carry out a functional check of the Booster Heaters by
checking the temperature display and the switching states in
the individual modes:
– Electric immersion heater: see the associ
ated installation
and operating instructions.
– Booster Heater: see chapter "Operation" in the associated
instal
lation and operating instructions.
● If a sola
r system is connected and is in operation, switch it off
and empty the solar panels.
● Visual inspection of the general condition of the domestic hot
water storage tank.
● Visual
check of the water storage tank level (filling level
indicator)
Top up the water if necessary (see chapter 3 "Set-up and
installation", section 3.3.2), and also determine the cause
of the low water level and rectify it.
● Che
ck the connection of the safety overflow and drain hose
for leaks, free drainage and gradient.
If necessary, clean the safety overflow and drain hose and
relay it; replace damaged parts.
● Visua
l check of connections and pipes. In the event of
damage, determine the cause.
Replace defective parts.
● Che
ck all electrical components, connections, and cables.
Repair damaged parts or replace them.
● Check the water pressure of the cold water supply (<6 bar)
and if necessary the fitting or adjustment of the pressure
reducer.
● Cle
an the plastic storage tank with soft cloths and a mild
cleaning agent. Do not use cleaning agents containing
aggressive solvents, as this will damage the plastic surface.

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