Atlantic Alfea Extensa A.I. - Maintenance of the installation; Hydraulic checks; Checking the outdoor unit; Electrical checks

" Before any maintenance operation, make sure
that the general power supply is switched o󰀨.
12.1 Hydraulic checks
" If frequent rells are required it is absolutely
essential that you check for any leaks. If relling
and a pressure reset are necessary, check what
type of uid was used initially.
Recommended lling pressure: between 1 and 2 bar
(the exact lling pressure is determined by the water
pressure in the installation).
Every year,
- Check the expansion circuit pressure (pre-ination of
1 bar) and the correct operation of the safety valve.
If the installation is tted with a hot water tank:
- Check the safety valve on the cold water supply inlet.
Make it operate as advised by the manufacturer.
- Check the back ow preventer.
12.2 Checking the outdoor unit
- Remove any dust from the exchanger, if necessary,
while making sure not to damage the blades.
- Straighten the blades using a comb.
- Check that there is nothing blocking the air ow.
- Check the fan.
- Verify that condensate drain is not obstructed.
• Checking the refrigeration circuit
If the amount of refrigerant in the system exceeds
2kg (models > 10kW), the refrigeration circuit must be
checked annually by an approved engineer (they must
have a certicate of competence for the handling of
refrigerants).
- Check there are no leaks (connections, valves…).
12.3 Electrical checks
- Check the connections and re-tighten if necessary.
- Check the state of the cables and plates.
12 Maintenance of the installation
Installation manual "1872 - EN"
Alféa Extensa A.I. Heat Pump
- 82 -