User Manual Krups 8000035750 Deep Fryers

There is no particular set time. you can leave it at a given temperature as long as you desire

After the oil cools, strain it back into the original container(s) using a funnel and some cheesecloth. Keep it in the fridge and use it again.

As in drain the oil? If so the basket is detachable and so you can just wash it out.