Maintenance - Dimplex DHW 250P Installation And Operating Instructions Manual

English

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
Any form of intervention on the domestic hot water
heat pump may only be carried out by qualified per-
sonnel.
NOTE
Observe the safety regulations!
NOTE
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
It is forbidden to release refrigerant into the atmos-
phere.
NOTE
The refrigerant must be collected before any interven-
tion in the circuit.
NOTE
De-energize the domestic hot water heat pump be-
fore opening.
NOTE
Wait until the fan has stopped completely before any
intervention.
NOTE
No water may reach electrical components.
NOTE
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.
EN-14
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
The R290 refrigerant in the heat pump circuit poses
no risk to the environment, but is flammable.
NOTE
The R290 refrigerant is odourless.
NOTE
The pipes of the refrigeration circuit must not be dam-
aged.
NOTE
Do not work with open flame or other ignition sources
within the device.
NOTE
In the event of a refrigerant leak, disconnect the plug,
ventilate the room and contact after-sales service.
NOTE
To not use mechanical means of speeding up the de-
frost process.
NOTE
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

the work area.
FD 0207
Maintenance
extinguisher close to
2
www.dimplex.de