Maintenance And Winterising; Maintenance; Winterising - Hayward SUMHEAT FULL INVERTER HP5171DT3 Einbau- & Anleitungshandbuch

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.
• 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.

5.2 Winterising

• Put the heat pump in "OFF" mode.
• Cut the power supply to the heat pump.
• Drain the condenser to avoid it being damaged by frost during the winter.
To do so, dismantle the water inlet and outlet couplings.
• 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.
• 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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