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Old 04-29-2015, 05:51 AM   #155
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Yesterday, I replaced the stock fan on my 2015 FC refridgerator with a Silenx Ixtrema 120 - 11 dba - 46 cfm as a direct replacement. It is very quiet but does not seem to move as much air. Opinions?



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Old 04-29-2015, 06:42 AM   #156
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Maybe it doesn't move quite as much air- if that's a problem, add a second fan. Maybe the fan will cycle on more frequently. Anything is worth not having all that noise.

I put a Silenx in mine (don't remember the exact model) and it works fine.

Sometimes when it's very warm out, I'll prop open the top refer vent door- that moves a lot more air.
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Old 04-30-2015, 02:33 AM   #157
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Originally Posted by Jukeboxfun View Post
Yesterday, I replaced the stock fan on my 2015 FC refridgerator with a Silenx Ixtrema 120 - 11 dba - 46 cfm as a direct replacement. It is very quiet but does not seem to move as much air. Opinions?
If you look closely at the old fan, it should have the CFM rating on it. I think my OEM fans were 90 or 120 CFM, but I can't remember for sure. I replaced them with 6 Silenex fans.

Your new fan might be enough if you add a sheet-metal baffle to the outside wall of the compartment to force all the air to go through the cooling unit and fins.
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Old 04-30-2015, 06:52 AM   #158
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I really doubt there was any real CFM engineering that went into the original fan. I think they just wanted to move some air and put in any old fan that was priced right. So I think any replacement fan is likely to do just fine. Of course the more air you move, the more efficient the cooling will be.
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Old 04-30-2015, 08:38 AM   #159
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I put two of the silenx fans in my 23fb and it worked well. Just fabricated a new bracket.
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Old 04-30-2015, 10:50 AM   #160
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The silenx fans don't move a whole lot of air --- true. I'd keep and eye on things and move to 2 fans if the compartment feels too hot. I used 2 silenx fans, and also reconfigured the air flow as suggested by the original poster -- the intent being to avoid cycling hot air right back into the compartment you are trying to cool. You can see my solution, based on the OP's design, at post no. 85. Might be overkill, definitely more work, but we've had good success.
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Old 05-01-2015, 01:57 PM   #161
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I installed two silenx fans to replace the original a few years ago. I typically only run one of the two unless the outside temp is above 80 degrees, then I start the second one using an alligator clip. Been running them this way for the past three years without any troubles, even when the temp is in the high 90's. Why do I generally run just one? Because it's very quiet where we camp and I hate the sound of anything running.
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Old 05-03-2015, 08:47 AM   #162
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With warm weather already here in Arizona our fridge compartment fan kicked on the other day and of course it is noisy. I have a little in-line lamp switch going to it but I thought it needs a quiet fan.

So I put this one in its place, seems to move near as much air as the original but you can't hear it inside and it's real, real quiet outside.
Are you running it with the speed reduction in place (1200 rpm)? I installed this same fan in mine, 1200 seemed to not be moving much air, so took out the speed reduction and am running at 1500 rpm. I started this project around 5pm and turned on the fridge right after I had everything wired and the fan mounted. When I went out this morning, the refrigerator was already at 39 degrees. At 1500 rpm, I can just barely hear the fan running, with the speed reduction in place, the fan cannot be heard.

I may reduce the speed again and see how much air is moving.
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Old 05-05-2015, 10:53 AM   #163
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Didn't touch the speed. You're correct that it doesn't move a lot of air, but the fridge stays at 38 degrees with one fan in normal outside temps, I installed the second fan as a precaution for hot days. There's no noise with the one fan, very little with two and I usually check to confirm the fan is actually running (just being paranoid).
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Old 05-10-2015, 01:15 PM   #164
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Originally Posted by Wayne&Sam View Post
I really doubt there was any real CFM engineering that went into the original fan. I think they just wanted to move some air and put in any old fan that was priced right. So I think any replacement fan is likely to do just fine. Of course the more air you move, the more efficient the cooling will be.
I think I saw in some Dometic information, that it is the fan supplied/recommended by Dometic for their refrigerators when double side wall vents are used by the manufacturer of the RV.

So, for CYA safety, Airstream uses the fan that Dometic recommends, that way Dometic warrantee remains valid.

It is still a stupid system (my opinion of course) compared to the no fan vent through the roof.
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Old 05-10-2015, 01:30 PM   #165
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I agree with some comments I'm reading here. Considering the build quality of an Airstream, and their reputation, I am aghast that a simple detail like fan notice hasn't been addressed. We payed out the nose for these trailers - why include a noisy $7.00 fan, if a $20.00 unit will be near silent? Cutting corners like this drives me nuts.
I am likely going to mount another silent fan in my rig, in order to run both when temps soar, or to provide a quick switch if one "buys the farm."
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Old 05-10-2015, 03:28 PM   #166
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I really doubt there was any real CFM engineering that went into the original fan. I think they just wanted to move some air and put in any old fan that was priced right. So I think any replacement fan is likely to do just fine. Of course the more air you move, the more efficient the cooling will be.

To clarify, I was trying to say Dometic used any old fan. And I just checked my Silenex- it's 90 cfm.



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Old 05-11-2015, 03:22 PM   #167
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Airstream authorized my dealer to install a lighted rocker switch inside the trailer on the wall opposite the rear of the fridge in our 2014 23D. It was the same switch installed near the door on the 2013 19s.

We have control over when the fan is powered. However, I wonder how wise it is to override the thermostat control that activates the fan. But....a good night sleep is a priority.

I want to replace the OEM fan with one that has the same specs, CFM and RPM. I bought a Silenex but the 3 electric leads were not well marked and we couldn't get it to power on.

Could anyone suggest a specific model that would fit my needs and has clearly marked wiring? Thanks.
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Old 05-12-2015, 07:32 AM   #168
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Airstream authorized my dealer to install a lighted rocker switch inside the trailer on the wall opposite the rear of the fridge in our 2014 23D. It was the same switch installed near the door on the 2013 19s.

We have control over when the fan is powered. However, I wonder how wise it is to override the thermostat control that activates the fan. But....a good night sleep is a priority.

I want to replace the OEM fan with one that has the same specs, CFM and RPM. I bought a Silenex but the 3 electric leads were not well marked and we couldn't get it to power on.

Could anyone suggest a specific model that would fit my needs and has clearly marked wiring? Thanks.
Here is a link to a post that I did that explains the wiring on unmarked Silenx fans. I used this to figure out which wires to connect when I did our mod.

http://www.airforums.com/forums/f455...fan-52507.html
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