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Go Back   SailNet Community > On Board > Gear & Maintenance > Nicro Day-Night 2000 solar vent repair
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Thread: Nicro Day-Night 2000 solar vent repair Reply to Thread
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Topic Review (Newest First)
02-20-2015 03:47 PM
travlineasy
Re: Nicro Day-Night 2000 solar vent repair

I ended up replacing my fans with 72-mm computer fans. They run day and night, very quiet, very high volume of air, and they cost less than $7 from Amazon. I power them from my house batteries and they draw just .041 amps, which is nothing. Additionally, the one I placed the head has 4 tiny, blue LED lights, which make a great night light, yet provide sufficient light to see what you are doing.

Gary
02-19-2015 12:41 PM
svHyLyte
Nicro Day-Night 2000 solar vent repair-Final Report

Well--It is now 2-1/2 years since making our home-cooked repair/upgrade to our Day-Night Solar Vent (see Post #42) and, as previously reported, other than a slight burp caused by the formation of a little rust on a battery contact after 15 months, our unit keeps on going and going and going, day and night and is now merrily spinning away. Not bad for a $28.00 repair and a whole lot less costly than a replacement. With this I will discontinue reports until when/if the unit fails. (For that eventuality, we have a second spare motor and solar panel stashed together in a vacuum pack bag in our spares locker tho' I'm guessing it will be awhile before we need it.)

FWIW...
01-26-2015 10:07 PM
AndreNJ1
Re: Nicro Day-Night 2000 solar vent repair

All,
I did not read all the pages of this thread so I apologize if this has been previously reported. I have had many of these over the years and Marinco has been good about replacing them. They tend to last about two years. But after several replacements I decided to try the 3rd party solar motor repair discussed elsewhere on this site and ordered two. But after they arrived, I find their diameter is smaller than the original motor and more problematic the spindle is shorter which makes attaching the fan a problem. So, I called Marinco tech support and asked if they sell just the motors.

As of January 2015, they are selling a re-build kit for the Day-Night solar vent (i have the 4") for $25.00. I received it and installed it. It is great. All you have to do is de-solder the old motor and solder in the new motor. Perfect fit, original spec equipment. You get a new motor, new switch, two new fans, and a new bug screen and a new gasket and screws.

Back to running silently now. Will install it in the spring.

If I think of it I will report back at the end of this summer 2015 to report if it is still running.
08-13-2014 12:01 PM
svHyLyte
Re: Nicro Day-Night 2000 solar vent repair

Well--It is now 5 days shy of 2 years since making our home-cooked repair/upgrade to our Solar Vent (see Post #42) and, other than a slight burp caused by the formation of a little rust on a battery contact after 15 months that was easily corrected, as described in an earlier update, our unit keeps on going and going and going. Again, not bad for a $28.00 repair and a whole lot less costly than a replacement. Next and final report in 6 months...

FWIW...
06-26-2014 11:11 PM
Mark Wyatt
Re: Nicro Day-Night 2000 solar vent repair

Great thread.

I have 7 4" Nicro vents on my 36' sailboat. The ventilation is great when all are in place, with no leaks even in raging rainstorms and deck washdowns.. 2 are always in place inside protected cockpit cubbys, 12v powered from the boat's batteries; they are a different breed of cat, much more airflow. 5 are 4" SS Nicro deck plate vents. I bought them all in 1992. The "replace with a deck plate feature" is critical, because sheets and guys catch on them, people step on them in rough weather and when submerged they allow green water entry, and three are at deck level (not on the doghouse), so they are replaced with the deckplates when underway.

I had one die (motor?) around 2005 and replaced it with a new one. I can't believe Marinco has discontinued the model. Anyway, I only run them in winter when it rains in San Diego, switching to Nicro Dorade vents in summer which fit into the 4" deckplates in the dry season and are not rainproof but provide fantastic ventilation.

Some thoughts: All my ventilators have become really noisy as the years have passed, and lubrication does not fix the problem. But they're still spinning, so I consider the noise comforting. Clearly bearings that are failing. After learning Marinco (Nicro) is not supporting the vents, this thread is really interesting.

So I'll add my 2 cents. Blocking diodes reduce panel voltage when sunlit and the back leakage is negligible at night (or for weeks), a waste of components. Solar cells and motor should be carefully matched so it all works out. The original units came with NiCad batteries; as they failed, replacement NiMH batteries are much better. After running the vents for 8 months when switching I left the vents face down on a bunk and they spinned for forty hours.

So the original Nicro 4" SS deck vents are fabulously good things and I am sad Marinco decided to no longer support them.

Anyhoo, glad to read there's ways to keep them running; I spent $1400 for seven of them years ago and now the company has crapped on us and we're on our own.
02-18-2014 11:26 AM
svHyLyte
Re: Nicro Day-Night 2000 solar vent repair

Well--It has now been 18 months since making our home-cooked repair/upgrade to our Solar Vent (see Post #42) and, other than a slight burp caused by the formation of a little rust on a battery contact after 15 months that was easily corrected, as described above, our unit keeps on going and going and going. Not bad for a $28.00 repair and a whole lot less costly than a replacement. Next report in 6 months...

FWIW...
11-12-2013 11:20 AM
svHyLyte
Re: Nicro Day-Night 2000 solar vent repair

The other night, 15 months after our home-cooked refurbishment of our solar vent, we discovered it was not running once the sun set. I was surprised to think that the battery might have given up in such a short period but hoped that was the only issue. Upon opening the battery compartment the following morning, I discovered that some rust/corrosion had developed on the contact to the base of the battery and the base of the battery itself. Once this was remove with an Emory board "borrowed" from my wife's make-up kit, the vent resumed normal operation even with the solar panel covered. So, I recharged the battery over-night with a plug-in charger and reinstalled it in the vent, but this time coating the battery terminals and contacts with a little conductive grease to prevent further corrosion and we are back in business!

FWIW...
08-20-2013 11:46 AM
svHyLyte
Re: Nicro Day-Night 2000 solar vent repair

Quote:
Originally Posted by JonnyQuest View Post
Which fan blade do y'all use and why? It comes with intake and exhaust fan blades. What's the logic for one versus the other? I have the fresh air intake fan right now but an thinking of putting the exhaust fan on instead to help drew hot rising air out of cabin. What about y'all?
We use the solar vents to discharge warm/hot air as we have a sufficient number of passive vents to allow relatively cooler air into the boat. Our vent seems to work pretty well as we've never had a problem with mold or unpleasant odors on the boat.

FWIW...
08-20-2013 11:44 AM
SlowButSteady
Re: Nicro Day-Night 2000 solar vent repair

Quote:
Originally Posted by JonnyQuest View Post
Which fan blade do y'all use and why? It comes with intake and exhaust fan blades. What's the logic for one versus the other? I have the fresh air intake fan right now but an thinking of putting the exhaust fan on instead to help drew hot rising air out of cabin. What about y'all?
I usually leave the fan on my boat in the "intake" mode. This (in theory) creates a very slight pressure in the cabin, forcing the very slight diesel smell out of the cabin and back into the engine compartment, and keeping the Admiral happy. Seems to work.
08-20-2013 10:49 AM
JonnyQuest Which fan blade do y'all use and why? It comes with intake and exhaust fan blades. What's the logic for one versus the other? I have the fresh air intake fan right now but an thinking of putting the exhaust fan on instead to help drew hot rising air out of cabin. What about y'all?
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