10.1 Annual inspections
| Item | Actions |
|---|---|
| General appearance and leaks | Check whether there are any visible fluid leaks, oil or anything else that appears abnormal inside and outside the heat pump. It is normal for a small amount of water to drip from the safety valves due to pressure fluctuations. |
| Refrigerant circuit | Check the refrigerant circuit in accordance with a separate inspection protocol. Annual inspection of the refrigerant circuit is imposed by law. Enter the date of the inspection and the date of the next inspection on the label of the refrigeration device. |
| Heating system | Check the heating system pressure. Check the correct operating pressure from the installation record or plan. If the pressure is too low, add liquid using the network filling valve. If you need to add liquid often, find out the reason for the decrease in pressure. |
| Collector | Check the collector pressure. Check the correct operating pressure from the installation record or plan. If the pressure is too low, add liquid using the network filling valve. After commissioning, it may be necessary to add liquid for a few days – a few litres is within the normal range. When the source pump starts up, the pressure should decrease slightly. The pressure will then increase correspondingly when the pump shuts off. Any other behaviour is indicative of air in the system or a blocked strainer. |
Check and clean the strainer in the collector. The strainer must be checked after commissioning. However, avoid opening the collector unnecessarily. If the strainer is dirty, the collector’s temperature difference will increase when the compressor is running. This may cause malfunction. |