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1. GENERAL INSTRUCTIONS - SAFETY (continued)
• Grounding connection of the device and its continuity are mandatory. The
ground wire has to be longer than the other wires in order to prevent the risks
of electric shock in the event the cable is pulled out. The electrical installation
must be equipped with a differential protection of 30 mA (see § 3.4).
• Failure to comply with these recommendations will invalidate the warranty.
Instructions for servicing - maintenance
Maintenance operations must be carried out once per year in order to guarantee
the longevity and the good working condition of the heat pump.
• Maintenance and the different operations must be carried out at the
recommended times and frequencies as specified in this manual.
• Only use genuine spare parts.
• Check the power cable. If the power cable is damaged, it has to be replaced
by the manufacturer, its after-sales service or by a qualified and authorised
person.
• Verify the grounding connection of the device and its continuity.
• Clean the coil with the help of a soft brush or jet of air or water (Warning,
never use a high pressure cleaner).
• Verify that the drains flow well.
• Verify the tightening of the hydraulic and electrical connections
• Verify the hydraulic sealing of the condenser.
• Have the leak-tightness of the cooling circuit to the leak detector checked by
an accredited professional.
Before any maintenance operation, the heating pump must be
disconnected from any electrical current source. The maintenance
operations must only be carried out by personnel that is qualified and
authorised to handle liquid refrigerants.
Instructions for winterising
• Put the heat pump in "OFF" mode.
• Cut the power supply to the heat pump.
• Empty the condenser with the help of the drain to avoid any risk of
deterioration. (high risk of freezing).
• Close the by-pass valve and unscrew the entry/exit connection unions.
• Eliminate the maximum amount of residual stagnant water from the condenser
with the help of an air gun.
• Close the water entry and exit areas of the heating pump to avoid introducing
foreign bodies.
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