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Old 07-20-2017, 12:05 PM   #1
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Thumbs up Installation of refer Cooling Fans

Hey all, hope you are well. Spent the majority of the morning yesterday installing these internal and external fans in my refrigerator and the refrigerator compartment. Installation was pretty straight forward. I got these kits from RV Cooling Unit Warehouse in Memphis TN (RV Cooling Unit Warehouse) . Pricing was about what it would cost if I were to piece meal the unit. It was very convenient to get all parts in one package with instructions and terrific telephone technical support. All items arrived in a very timely manner, well packed and complete. I do not know how much I will benefit from these fans, but I know that in my other rig the exhaust system was horrific. According to the vendor, I would not expect him to say anything else, the extra air flowing through the external cooling fins help the refer operate more efficiently. The external fan has a thermostat that kicks the unit on when the compartment reaches 85 degrees and it also has an override switch. Accordingly the internal fan helps circulate the cold air. The internal fan only has an on/off switch. Iíll follow up with temp indicators later on. I am in no way shape or form related to or work for this vendor. I am simply a very satisfied customer.
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File Type: jpg Internal fan.jpg (156.6 KB, 25 views)
File Type: jpg External Fan.JPG (165.6 KB, 37 views)
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Old 07-21-2017, 09:01 PM   #2
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very tidy.

my makeshift fans are at about $12 incl wiring, fuses and switches.
1 fan internal, 2 external

my mounts make use of velcro, bailing wire and zip ties- your is nicer!

Mike
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Old 07-21-2017, 09:08 PM   #3
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Always of interest is how much power these systems are using.

Have you measured the actual power consumption?
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Old 07-21-2017, 09:15 PM   #4
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Quote:
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Always of interest is how much power these systems are using.

Have you measured the actual power consumption?
No Sir I have not. In fact in the interest of due diligence I have no idea how to do so? Is it easy to do?
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Old 07-21-2017, 09:17 PM   #5
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Originally Posted by mkguitar View Post
very tidy.

my makeshift fans are at about $12 incl wiring, fuses and switches.
1 fan internal, 2 external

my mounts make use of velcro, bailing wire and zip ties- your is nicer!

Mike
Mike, thanks but my stuff is also mounted with zip ties with the exception of the internal fans which came with two mounting tabs that fit onto the fins. Has been keeping the frig at a steady 38 degrees and it's 95 out today.
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Old 07-21-2017, 09:19 PM   #6
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No Sir I have not. In fact in the interest of due diligence I have no idea how to do so? Is it easy to do?
All you need to do is open the 12v power wire to them and use a multimeter on the 10 amp scale in series with the fans.
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Old 07-22-2017, 03:07 AM   #7
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my fans came from ebay seller rdr-electronics- $15 7 fans

7 - FP-108B S1 DC Brushless PC Computer Fan 90mm X 25mm 12V .32A 59cu ft/min



my harbor freight folding solar panel puts out about 1 A max so I can almost mitigate the fan use.

been using these for a few seasons now I would guess I have a few hundred hours on them

mike
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Old 07-22-2017, 12:41 PM   #8
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Default Measurement results

Quote:
Originally Posted by booster View Post
All you need to do is open the 12v power wire to them and use a multimeter on the 10 amp scale in series with the fans.
Hey guys, got some help from my neighbor and we came up with the following info: all the fans (1 external and 2 internal) running at the same time have an amp draw of less the 1/2 amp. The inside fans draw 0.14 each and the outside fan draws 0.2. Is this excessive? As you can tell this area is not my forte.
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Old 07-22-2017, 01:41 PM   #9
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If you have a 100 amp-hour battery,
50% of the capacity is usable (ie 50AH is available).

If your fan draws 1 ampere,
the battery can support it for 50 hours (50AH divided by 1A).

===========================

If you have 200 amp-hour of battery,
50% of the capacity is usable (ie 100AH is available).

If your fan draws 0.5 ampere,
the battery can support it for 200 hours (100AH divided by 0.5A).


ps. we are talking about fans alone, nothing else.
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Old 07-22-2017, 01:56 PM   #10
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Quote:
Originally Posted by BBQ View Post
If you have a 100 amp-hour battery,
50% of the capacity is usable (ie 50AH is available).

If your fan draws 1 ampere,
the battery can support it for 50 hours (50AH divided by 1A).

===========================

If you have 200 amp-hour of battery,
50% of the capacity is usable (ie 100AH is available).

If your fan draws 0.5 ampere,
the battery can support it for 200 hours (100AH divided by 0.5A).


ps. we are talking about fans alone, nothing else.
bbq, thanks for that boat load of info. I highly doubt that I will ever be off grid for an extended period of time. However if I am I guess I can rely on the genny and portable solar panel unit. Thanks again.
Best.
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