A heat pump dryer is a device that removes moisture from items by circulating heated air and passing it through damp items. For drying kiwifruit, here are some guidelines that may be helpful:

Temperature setting: The suitable temperature range for kiwi fruit drying is about 50-60°C. Therefore, when setting the temperature of the heat pump dryer, it should be set within this range.
Slicing: Thinly slicing kiwis speeds up drying and makes it easier to ensure even drying throughout the kiwi.
Air circulation: Ensuring good air circulation in a heat pump dryer can improve drying efficiency.
Time control: The drying time depends on the thickness of the kiwi fruit and the power of the dryer. Generally speaking, the drying time takes 2-4 hours.
Observe the kiwi fruit: During the drying process, the state of the kiwi fruit should be observed regularly to ensure that the kiwi fruit is evenly dried and there are no signs of deterioration.

In short, when using a heat pump dryer to dry kiwifruit, you need to pay attention to the temperature setting, slice, air circulation, time control and observe the state of kiwifruit.