Dimplex DHW 250P, Инструкция по установке и эксплуатации

Страница: 34 / 60

EN-14 FD 0207 www.dimplex.de
English Maintenance
11. Maintenance
11.1. General
To maintain the performance and improve the service
life of the device, we recommend having annual in-
spection and maintenance work carried out by an au-
thorised specialist.
NOTE
i
Any form of intervention on the domestic hot water
heat pump may only be carried out by qualified per-
sonnel.
NOTE
i
Observe the safety regulations!
NOTE
i
Any intervention in the refrigeration circuit may only
be carried out by qualified personnel with a refrigera-
tion certificate in at least category 1.
NOTE
i
It is forbidden to release refrigerant into the atmos-
phere.
NOTE
i
The refrigerant must be collected before any interven-
tion in the circuit.
NOTE
i
De-energize the domestic hot water heat pump be-
fore opening.
NOTE
i
Wait until the fan has stopped completely before any
intervention.
NOTE
i
No water may reach electrical components.
NOTE
i
The efficiency of the pressure limiter must
be checked regularly to remove any limescale depos-
its and to ensure that it is not blocked.
When emptying the cylinder, ensure that there is suf-
ficient rear ventilation (e.g. cylinder cover, domestic
hot water outlet) to avoid any vacuum in the cylinder.
The following materials and products may not be
used:

Brushes with steel bristles and steel sponges,

scouring powder.

any product based on sodium or
potassium hypochlorite solution or other chlorine
derivatives.
During maintenance work or when decommissioning
the domestic hot water heat pump, observe the envi-
ronmental protection regulations with regard to col-
lecting, recycling and disposing of used materials and
components.
NOTE
i
The R290 refrigerant in the heat pump circuit poses
no risk to the environment, but is flammable.
NOTE
i
The R290 refrigerant is odourless.
NOTE
i
The pipes of the refrigeration circuit must not be dam-
aged.
NOTE
i
Do not work with open flame or other ignition sources
within the device.
NOTE
i
In the event of a refrigerant leak, disconnect the plug,
ventilate the room and contact after-sales service.
NOTE
i
To not use mechanical means of speeding up the de-
frost process.
NOTE
i
Do not pierce or burn the device. It is essential that the
refrigerant is caught and collected during any inter-
vention in the refrigeration circuit.
When carrying out interventions in the refrigeration
circuit, proceed as follows:

Secure the work area.

Inform the affected persons of the risks associ-
ated with the work being carried out.

Ensure that the risk of ignition is low.

Avoid working in enclosed, narrow spaces. The
work area must be adequately ventilated.

Check the work area before and during the work
with a suitable leak detector.

Keep a dry powder or CO
2
extinguisher close to
the work area.