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5. MAINTENANCE AND WINTERISING
5.1 Maintenance
These maintenance operations must be carried out once per year in order to
guarantee the longevity and the good working condition of the heat pump.
•
The maintenance and repairs of the device must be carried out by an
accredited professional in accordance with the regulatory texts and the
rules of the art in effect in the country where the device is installed (see
§ 3.4).
For any intervention on the cooling circuit, the professional must hold a
certificate of competence in handling refrigerants.
•
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.
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Clean the coil with the help of a soft brush or jet of air or water. Warning,
never use a high pressure cleaner.
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Verify that the drains flow well.
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Verify the tightening of the hydraulic and electrical connections
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Verify the hydraulic sealing of the condenser.
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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.
5.2 Winterising
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Put the heat pump in "OFF" mode.
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Cut the power supply to the heat pump.
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Empty the condenser with the help of the drain to avoid any risk of
deterioration. (high risk of freezing).
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Close the by-pass valve and unscrew the entry/exit connection unions.
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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.
•
Cover the heating pump with a dedicated winterising case.
Any damage caused by poor winterising maintenance will lead to
cancellation of the warranty.
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