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Old 07-17-2020, 08:09 PM   #1
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A few tweaks 2104s

I’m pretty bad about documenting projects. Usually I have a thought and then order some stuff and dive in when it all shows up.

Here’s two with some photos.

1. USB charging added to other side of bed:

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2. Fridge was getting warm now that it’s 115 degrees out.

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Yesterday it was 107 when I started this project and the butter stick in the fridge was squeezable soft and the beverages not cold. Just like it's been for the past 3 weeks while sitting beside the house. Fridge would cool at night, but during the day it was getting warm. Worked perfectly while we were up in the high country of Flagstaff and Prescott for a few days each of those weeks.

After adding the fans....
Today when I got home, it was 110 as shown on the thermostat and the butter was hard and the beverages were cold. Greatly improved.
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Old 07-17-2020, 10:03 PM   #2
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Quote:
Originally Posted by theHookers View Post
Iím pretty bad about documenting projects. Usually I have a thought and then order some stuff and dive in when it all shows up.

Hereís two with some photos.

1. USB charging added to other side of bed:

Attachment 234124Attachment 234125

2. Fridge was getting warm now that itís 115 degrees out.

Attachment 234126Attachment 234127
Attachment 234128Attachment 234129
Attachment 234130

Yesterday it was 107 when I started this project and the butter stick in the fridge was squeezable soft and the beverages not cold. Just like it's been for the past 3 weeks while sitting beside the house. Fridge would cool at night, but during the day it was getting warm. Worked perfectly while we were up in the high country of Flagstaff and Prescott for a few days each of those weeks.

After adding the fans....
Today when I got home, it was 110 as shown on the thermostat and the butter was hard and the beverages were cold. Greatly improved.
Are the fans variable speed?
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Old 07-17-2020, 11:06 PM   #3
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Are the fans variable speed?
Constant speed. ~1200 rpm 38cfm

The thermostat is currently set to shut off the fans when it's under 90 degrees outside temp at the rear of the trailer.
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Old 07-18-2020, 12:36 PM   #4
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i might have to try that fan mod! good idea!
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Old 08-08-2020, 10:59 AM   #5
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I want to add the same, but with an on/off switch. Does anyone know if there is anything behind the top of the fridge (I marked a red dot where I'd like to mount the switch)?Click image for larger version

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Old 08-08-2020, 01:17 PM   #6
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Some work involved, but couldnít you see it from the top vent or through the outside opening. If you have an endoscope snake camera. I got a Bluetooth one for like 25 bucks.
?? Drill a small hole inside the cabinet beside it and shove your cam in....or from the outside maybe?

Just tossing ideas.
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Old 08-08-2020, 01:58 PM   #7
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Originally Posted by Iwannacamp View Post
Some work involved, but couldnít you see it from the top vent or through the outside opening. If you have an endoscope snake camera. I got a Bluetooth one for like 25 bucks.
?? Drill a small hole inside the cabinet beside it and shove your cam in....or from the outside maybe?

Just tossing ideas.
Those are some good ones! Thanks!

Think I might see if I can take a flash picture through the top vent... WML
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Old 08-17-2020, 08:37 PM   #8
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Love the Fan on the top vent Idea. Is three fans excessive? wouldn't one do the trick? (I am new to RVing as of later this week).
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Old 08-19-2020, 12:03 AM   #9
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Love the Fan on the top vent Idea. Is three fans excessive? wouldn't one do the trick? (I am new to RVing as of later this week).
Two of these was my plan. Got 3 for $12. Seems to work. Fridge no longer gets warm during the hottest part of the day. I have put a fan in the fridge now to move the cold air as the bottles in the door don't get cold enough.

Once the temps get back to the 80's the vent fans will not run. The fridge worked ok at these temps and below. 118 not so much.
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Old 08-19-2020, 08:39 AM   #10
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Nice job on your mods. I'm looking closely at doing the fridge fan mod.
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Old 08-27-2020, 09:42 PM   #11
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A few tweaks 2104s

Fan in the fridge with Potentiometer with Switch. I really wanted a fan or two with a CFM around 3. I could only find them in the 9 range. With the PWM motor controller I can run the fan much slower and itís very quiet. This controller will switch off as well. The fan only operates with the door closed.

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Old 08-27-2020, 09:59 PM   #12
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A few tweaks 2104s

Quote:
Originally Posted by Xplor View Post
I want to add the same, but with an on/off switch. Does anyone know if there is anything behind the top of the fridge (I marked a red dot where I'd like to mount the switch)?Attachment 236049

The fans are more noisy than I cared for. They are sleeve bearing and run all day in the heat here for 2 months and are mounted flat. So, I ordered some better fans with a substantially longer service life.

When I looked see how I wired the current fan set, I found that the center fan broke a blade. Probably why the noise. Ha ha ha. The metal screen flexes and the fan hits while bouncing down the road.

While waiting for the parts to upgrade my fan setup, I installed a push button on/off switch.

Iíll update with photos of the fan setup 2.0 when the parts come in.

Here is the switch setup.





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Old 08-28-2020, 08:37 PM   #13
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Fan parts came in.

Test setup. Mostly a success. Hereís the exception.

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2.0

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Old 09-07-2020, 09:32 AM   #14
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Originally Posted by theHookers View Post
Fan in the fridge with Potentiometer with Switch. I really wanted a fan or two with a CFM around 3. I could only find them in the 9 range. With the PWM motor controller I can run the fan much slower and it’s very quiet. This controller will switch off as well. The fan only operates with the door closed.

Attachment 237803Attachment 237804Attachment 237805Attachment 237806

Love your fan ideas and admire your bold move cutting the roof of a new RV. For a fridge fan, I've been using one powered by D-Cell batteries and it seems to work just fine, but I can see in super hot climates where it wouldn't be enough. I considered adding a second one, but then I sold that RV and now one is fine.
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Old 09-07-2020, 09:55 AM   #15
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Love your fan ideas and admire your bold move cutting the roof of a new RV. For a fridge fan, I've been using one powered by D-Cell batteries and it seems to work just fine, but I can see in super hot climates where it wouldn't be enough. I considered adding a second one, but then I sold that RV and now one is fine.
Fans for the roof are zip tied with uv quality ties to the top of the vent screen. No cutting was necessary. I did have to add spacers to keep the fans off the screen when bouncing. Just dropped two wires down through the vent screen and hooked up to the 12v power available to the fridge controller with a fuse/switch and thermostat switch.

Inside the fridge I used a clip on connector to hook into the 12v already supplied to the light inside.
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Old 09-29-2020, 01:42 PM   #16
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Fan setup for fridge 2.0



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Old 09-30-2020, 11:02 AM   #17
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Is three fans excessive?
I sure hope not !



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Old 09-30-2020, 06:25 PM   #18
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Fans certainly make a difference. For anyone not getting adequate cooling in their fridge I highly recommend both vent and interior fans.

Not just lower temps in freezer and refer (-5 & 35) but rapid cool down from startup.

Last trip prep my freezer went from 66 degrees with door open to -5 by time I got back from store 2 hours later.
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