Maintenance; Wintering - BWT PEARL HPT 12 Betriebsanleitung

MAINTENANCE

Before any maintenance operation, the heat pump must be completely stopped for few minutes before connecting pressure controllers. This is because high
pressure and temperature inside the heat pump could be harmful.
Please check the following on a monthly basis:
• Check and clean the evaporator (with a soft brush or water jet).
• Do not use high pressure cleaner.
• Check all electrical and ground connections.
• Check that all electrical connections and terminals are securely connected.
• Check gas pressure (when heat pump is stopped, manometer must indicate a pressure higher than 0.5)
Please check the following points yearly:
• Check settings.
• Check securities.
• Check all electrical connections and ground.
• Check condenser cleanliness.
• Use soft soap and water to clean the heat pump casing, do not use solvents.

WINTERING

1. Turn off the power supply to the HP
2. Fully open the bypass valve and close the HP inlet and outlet valves.
1. Unscrew the junctions to evacuate all the
water contained in the HP.
Open valve Half-open valve
2. Reconnect and slightly tighten the junc-
tions by hand to prevent the introduction of
foreign objects into the HP
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Closed valve
3. Place the provided wintering blanket over
the HP