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Old 09-03-2017, 01:27 PM   #1
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50 yrs old Refer Problem and Fix!!!!!

We have a 1968 "Elixer" gas/120v refer in the old TT that has been working fine up till now. Went out this week to fire things up for an upcoming trip and the refer would only get down to 49 degrees in the food area. Freezer was only 20 degrees.
TT is outside in the sun and the OAT is right around 95-100 degrees. Ran it for 2 days no difference in temps.
The fan on the food box coil inside is running fine BUT the top exhaust fans (2) were not working. Testing found the temp switch not closing to start the fans running.
Rewired the fans direct to a switch on the inside of the TT and turned the fans on and off manually now.
Food box 49 degrees at 6 PM last night (OAT 94) let it run all night with fans on and no cap on the top exhaust (free flow of air out) and food box was 36 degrees today with the OAT 90 degrees and the freezer 5 degrees. Sun is beating down on the outside of the TT in the refer area and the box is staying under 39 with the OAT 94.

Have put the Camco cap back on the exhaust opening and the box has gone up to 40 degrees.
I suspect that the "reverse" flow of the exhaust using the Camco type cap does not allow as much cooling air to come in the bottom of the coils and exhaust out the top as a completely open top vent does.
After more testing, if such is the case, I have a new design of cap in mind that I will try and see if it makes any difference.

If you're having cooling troubles in your food area, make sure that you have a good vent fan system working to draw out all the hot air and allow the coils to do their job.
Also double check the baffle near the bottom of the coils to make sure it is there and forcing the new cool air to go up through the coils and not around them.
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Old 09-03-2017, 03:01 PM   #2
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Looks like I hit the wrong button and posted in the wrong forum
Anyone know how I can move this to appliances?
Thabks
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