Frequently Asked Questions Can I set my Philips hand blender's power to "ON" permanently? If you are wondering if you can set your Philips hand blender’s power to “ON” permanently, please find the answer here. Limiting the usage to 3 minutes max a time Due to safety reasons, your Philips hand blender should not be operated for more than 3 minutes at a time. This is why it only works when you press the power button. It is impossible to fix the power button in the “ON” position to prevent you from letting the appliance run for a longer period of time.