http://www.wenxuecity.com/blog/201609/1666/1303238.html
Thanks to the author who provided so much information. Most of it probably will take a long time for me to absorb.
have a fairly new fridge. The condensor is still wrapped in cardboard (pic).
1. Should I take off the cardboard?
2. The condensor is in the bottom and at the back of the fridge. Besides using a 气泵, what is a good way to clean the condensor? Vacumm cleaner with an attachment?