Cleaning / Care; Care; Cleaning Of Heating Side; Cleaning Of Air Side - Buderus WPL 80AMR Montage- Und Gebrauchsanweisung

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Cleaning / Care

8.1 Care

To protect the paint finish, avoid placing objects against or on the
unit. The external parts of the heat pump can be wiped with a
damp cloth and commercially available cleaning agents.
ATTENTION!
Do not use any cleaning agents containing sand, soda, acid or chloride as
these may damage the surface.
To prevent malfunctions in the heat exchanger of the heat pump
caused by dirt deposits, care must be taken that the heat ex-
changer in the heating installation cannot become contaminated.
In the event that operating malfunctions due to contamination
occur nevertheless, the system should be cleaned as described
below.

8.2 Cleaning of Heating Side

The ingress of oxygen into the heating water circuit, in particular
if it contains steel components, may result in the formation of ox-
idation products (rust). These can enter the heating system via
valves, circulating pumps or plastic tubing. It is therefore impor-
tant - in particular with respect to the piping of underfloor heating
systems - that the installation be executed in a diffusion-proof
manner.
ATTENTION!
To prevent the accumulation of deposits (e.g. rust) we recommend using
a suitable corrosion protection system.
In the case of severe contamination leading to a reduction in the
performance of the condenser in the heat pump, the system must
be cleaned by a heating technician.
Based on current knowledge, we recommend cleaning with a 5%
phosphoric acid solution or, in the case that cleaning needs to be
performed more frequently, with a 5% formic acid solution.
In either case, the cleaning fluid should be at room temperature.
It is recommended that the heat exchanger be cleaned in the di-
rection opposite to the normal flow direction.
To prevent acidic cleaning agents from entering the circuit of the
heating installation we recommend that the flushing device be fit-
ted directly to the supply and return lines of the condenser of the
heat pump.
Thereafter the system must be thoroughly flushed using appro-
priate neutralising agents in order to prevent any damage caused
by cleaning agent residues that may still be present in the sys-
tem.
All acids must be used with great care, all relevant regulations of
the employers' liability insurance associations must be adhered
to.
If in doubt, contact the manufacturer of the chemicals!

8.3 Cleaning of Air Side

Evaporator, fan and condensate drain should be cleaned of de-
bris (leaves, branches, etc.) prior to the start of the heating
season. To this end, the front panel of the heat pump should be
opened, first at the bottom and then at the top.
ATTENTION!
Prior to opening the unit it must be ensured that all electrical circuits are
disconnected from the power supply.
The removal and reinstallation of the panel assemblies to be per-
formed as described in Chapter 4.
When cleaning do not use any sharp or hard objects so as to pre-
vent any damage to the evaporator and the condensate pan.
Extreme weather conditions (e.g. heavy snow) may in some
cases result in ice build-up on the inlet and outlet grilles. To as-
sure a minimum air flow rate, clear the inlet and discharge areas
of snow and ice, if needed.
9 Malfunctions /
Troubleshooting
This heat pump is a quality product and designed for trouble-free
and maintenance-free operation. In the event that a malfunction
occurs nevertheless, it will be indicated on the display of the heat
pump controller. Simply consult the Malfunctions and Trouble-
shooting table in the operating manual of the heat pump control-
ler. If the problem cannot be corrected by the user, please con-
tact the after-sales service in charge.
ATTENTION!
Any work on the heat pump may only be performed by authorized and
qualified after-sales service technicians.
10 Decommissioning /
Disposal
Before removing the heat pump, disconnect the machine from
the power supply and close all valves. Environment-relevant re-
quirements regarding the recovery, recycling and disposal of ser-
vice fuels and components in accordance with all relevant stan-
dards must be adhered to. In this context, particular attention
must be paid to the proper disposal of refrigerants and refrigera-
tion oils.
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