Hayward HP50A1, Installation Instructions Manual

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15
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.
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.
Any damage caused by poor winterising maintenance will lead to
cancellation of the warranty.
5.2 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.
Cover the heating pump with a dedicated winterising case.