20 replies to this topic

[leadsled9]

My Norcold N300 stays very cold (32-34 at setting 4) even on hot 100 degree days. It works real good as long as the burner slits are clean and free from corrosion.

It is a pain to have to remember to turn it down at night or everything freezes.

[Desert Rancher]

Rodger,

How about some pics!

Thanks~
DR

[Roger]

I only have a pic of the exhaust heat shield/isolator. It is ugly and probably needs improvement, but it seems to do the job. It is also 100% reversable.

I moved the fan next to it on the vent cover.

Rodger,

How about some pics!

Thanks~
DR

Attached Thumbnails

• 

[Desert Rancher]

Thanks Rodger, that's sufficient to get the general idea. I was thinking about using the reflectex insulation on the sides and top, since there is very little room.

[Roger]

Just wanted to report back my findings over the past two days.

Yesterday I set the fridge to Med on the lpg setting and the fridge was about 48 degrees. The outside temp was about 86 degrees. Usually with the gas on high it would cool to about 50 degrees.

Today it is 90 degrees. The lpg setting is on high. The fridge has been in the sun all day. The temp inside the fridge is 40 degrees.

I may add another exhaust fan but I think I have resolved the main issue.

Roger

[Desert Rancher]

Good work!
FYI - I got this fan: http://www.amazon.co...3NC15J8KN28N1ED

It has two thermal switches (one attaches to the reefer coils) to turn on/off at a preset temp. The other one monitors ambient temp.

The ambient temp and the coil temp must be >80 to turn the fan on. Otherwise it not cool properly. After all it is a "still".

Seems to be a well thought idea.

Edited by Desert Rancher, 19 August 2011 - 04:35 PM.

[Roger]

DR,
I rolled up some reflectex and zip tied it in a roll to create dead are space in my unit. I had about 1 inch on the (facing the fridge from the outside) right and about 2 inches on the left. I didn't even bother with the top as it was less then a half inch. The two fans and the exhaust stack helped the most.

Thanks Rodger, that's sufficient to get the general idea. I was thinking about using the reflectex insulation on the sides and top, since there is very little room.

[cwdtmmrs]

DR,
I rolled up some reflectex and zip tied it in a roll to create dead are space in my unit. I had about 1 inch on the (facing the fridge from the outside) right and about 2 inches on the left. I didn't even bother with the top as it was less then a half inch. The two fans and the exhaust stack helped the most.

Where did you install the second fan and is it the same as the one discribed in your 1st post?


Thanks,
CWD

[Roger]

Where did you install the second fan and is it the same as the one discribed in your 1st post?


Thanks,
CWD

I installed a 120 MM case fan as the secondary. I think it was $7 at Fry's electronics, a way better deal than Radio Shack.
Specs
.33 AMp
57 CFM
140 Grams

You can see part of my Aluminum baffle in the "fridge bottom" pic. I installed the bigger fan on other side of the vent, again blowing out. I think I spent about $45 total on this project and I still have 8 feet of sheet aluminum left over, it was the most expensive item.

Attached Thumbnails

• 
• 

[cwdtmmrs]

Thanks Roger. I am still not sure I completely understand your baffle arrangement. Did your fridge come with the perforated metal wind shield on the burner or did you add that? Also what are the two red LEDs in the lower left and is the white thing a remote thermometer?

Thanks,
CWD