Specific Instructions For Service, Maintenance And Breakdowns - DeDietrich ALEZIO S User Manual

1 Safety instructions and recommendations
1.8

Specific instructions for service, maintenance and breakdowns

8 AWHP MIV-S
Do not touch radiators for long periods. Depending on the heat pump
settings, the temperature of the radiators may exceed 60°C.
Do not drain the installation, except in cases of absolute necessity. E.g.:
several months' absence with the risk of temperatures in the building
falling below freezing.
Maintenance work must be carried out by a qualified professional.
Only a qualified professional is authorised to set, correct or replace the
safety devices.
Before any work, switch off the power supply to the heat pump, the indoor
unit and the hydraulic/electrical back-up.
Wait for approx. 20-30 seconds for the outdoor unit capacitors to be
discharged, and check that the lights on the outdoor unit PCBs have gone
out.
Before working on the refrigeration circuit, switch off the appliance and
wait a few minutes. Certain items of equipment such as the compressor
and the pipes can reach temperatures in excess of 100°C and high
pressures, which may cause serious injuries.
Locate and correct the cause of power cut before resetting the safety
thermostat.
Only genuine spare parts may be used.
Removal and disposal of the heat pump must be carried out by a qualified
professional in accordance with prevailing local and national regulations.
After maintenance or repair work, check the entire heating system to
ensure that there are no leaks.
Remove the casing only to perform maintenance and repair work. Put the
casing back in place after maintenance and repair work.
For heat pumps with a refrigerant fluid load of more than 5 tonnes of CO
equivalent, the user must have an annual leak-tightness test performed on
the refrigerant equipment.
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7748711 - v03 - 08062020