Reduce compressor running time with up to 50%

Samuel, I value your input. I filled the box to the top, and as you can see, the expanded foam ended up outside of the box. The result would probably be much better if just the amount of foam was sprayed that would fit the desired space in its expanded form. Then it would probably cure much better.

The instructions for my foam says that a bit of sprayed water would be good but I think the intention is to get better adherence to the the surrounding surfaces.

There is also a paper bag (grill briquettes) in my picture that I just partly filled with foam and the result came out nice, but then again, if I would have wanted to fill the whole bag I used to little foam.

I guess you know what I mean by "practice". Before I go into spraying around my fridge box I will try it a few more times in my garden, like above.

Johan

Hi guys,

Edited by skipper - 11 May 2018 at 22:16

samuel wrote: If you look closely you may find that the foam in the centre has not cured properly. ( the box on the left shows some shading in the central area, other pieces are whiter)This is sometimes due to insufficient moisture to cure it & too much initially placed  the area to be filled.

I have gone on experimenting with the foam and have discovered that sometimes the foam does not cure as well as it did the first time (when Samuel pointed out that not even then was it fully cured). I also found big air compartments when cutting the foam. Trying to spray some water before spraying the foam seems to solve this so I am grateful for the advice.

I will practice some more before I cut holes from inside my cooling box and spray foam to insulate it. The big problem with spraying the actual box is that you cannot see what you are doing nor can you inspect the result.

Johan

And now the works on the fridge has commenced!

I begin with filling the space between the back of the box and the hull with foam. As there is a gap between the plywood the box stands on and the hull I began with drilling two holes at the bottom of the box. I then put a plastic shopping bag on the inside and filled it with foam. This way I could bar the gap without filling the space under the fridge with foam. I will put a sheet of extruded polystyrene at the bottom of the fridge which will both cover the two holes and insulate the fridge downwards.

You can also see a hole that I have drilled behind the cooling plate. After the bar below had cured I sprayed foam into that hole.

Johan

I hope the topic starter does not mind that I post a few more pictures of the progress of insulating my fridge. I just want to contribute to the this excellent thread the way I can.


Here is a picture of one hole used to fill the space behind with foam next to a hole yet to be used. The excess foam from the first hole has been cut off with a knife. Both holes will be covered with an aluminium plate according to my plan.

Johan