Dimplex LI 40AS, Руководство по эксплуатации

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8.3
8 Maintenance / Cleaning
8.1 Maintenance
To protect the paintwork, avoid leaning anything against the de-
vice or putting objects on the device. External heat pump parts
can be wiped with a damp cloth and domestic cleaner.
ATTENTION!
Never use cleaning agents containing sand, soda, acid or chloride as
these can damage the surfaces.
To prevent faults due to sediment in the heat exchanger of the
heat pump, ensure that the heat exchanger in the heating system
can not be contaminated. In the event that operating malfunc-
tions due to contamination still occur, the system should be
cleaned as described below.
8.2 Cleaning the Heating System
The ingress of oxygen into the heating water circuit may result in
the formation of oxidation products (rust), particularly if steel
components are used. These products enter the heating system
via the valves, the circulating pumps and/or plastic pipes. It is
therefore essential - in particular with respect to the piping of un-
derfloor heating systems - that only diffusion-proof materials are
used.
ATTENTION!
We recommend the installation of a suitable corrosion protection system
to prevent the formation of deposits (e.g. rust) in the condenser of the
heat pump.
Residue from lubricants and sealants may also contaminate the
heating water.
In the case of severe contamination leading to a reduction in the
performance of the liquefier in the heat pump, the system must
be cleaned by a heating technician.
According to current information, we recommend using a 5%
phosphoric acid solution for cleaning purposes. However, if
cleaning needs to be performed more frequently, a 5% formic
acid solution should be used.
In either case, the cleaning fluid should be at room temperature.
We recommend flushing the heat exchanger in the direction op-
posite to the normal flow direction.
To prevent acidic cleaning agents from entering the heating sys-
tem circuit, we recommend connecting the flushing device di-
rectly to the flow and return flow of the liquefier of the heat pump.
It is important that the system be thoroughly flushed using appro-
priate neutralising agents to prevent damage caused by cleaning
agent residue remaining in the system.
Acids must be used with great care and 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 the Air System
Evaporator, ventilator and condensate outflow should be cleaned
of contamination (leaves, twigs, etc.) before each new heating
period. Do this by opening the lateral cover panels of the heat
pump. The bottom should be opened first followed by the top.
ATTENTION!
Before opening the device, ensure that all circuits are isolated from the
power supply.
To prevent the evaporator and the condensate tray from being
damaged, do not use hard or sharp objects for cleaning.
To ensure proper drainage from the condensate tray, it must be
regularly inspected and cleaned, if necessary.
All panelling can be removed to allow accessing the inside of the
device. Note that the upper covers can only be removed after the
lower covers have been taken off.
The two sash fasteners must be opened for this purpose. The
cover must then be slightly tilted forward and lifted off toward the
top.
The lateral and rear panels are hooked into the cover panel.
Loosen the two screws for dismantling and unhook the panels by
pulling them back.
The cover panels on the ventilator side can be dismantled after
the two upper lateral side panels have been removed. Loosen
the screws for this purpose, slide the panel slightly to the right or
left and then lift it off towards the front.
Opening the lower covers Closing the lower covers
Opening the lateral and
rear cover panels on top
Closing the lateral and
rear cover panels on top
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