Installing computer fans

Submitted: Saturday, Mar 29, 2003 at 18:52
ThreadID: 4126 Views:7457 Replies:7 FollowUps:6
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Could someone explain how and where to install the computer fan in a chescold car fridge and a electrolux caravan fridge. How many fans are required and is the idea to suck the hot air out or put cool air onto the heater unit. I know its somewhere in the archive but cant find it, any help would be appreceiated. I,d love to know by tommorow because I need to complete the job by yesterday god i've got to give up this xxxx
Regards Wal

Ps Off to the cape if I can get these bloody fridges going ok
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Reply By: Ray M (Vic) - Saturday, Mar 29, 2003 at 20:03

Saturday, Mar 29, 2003 at 20:03
Don't know about the car fridge but the idea with the caravan fridge is to suck the hot air out. Place the fan by the top vent blowing out and cool air will flow in via the bottom vent, one should do the job but having said that I installed two.Hooroo
AnswerID: 16400

Follow Up By: DesF - Saturday, Mar 29, 2003 at 20:22

Saturday, Mar 29, 2003 at 20:22
Hi, Are the fans 12v or 240v And where did you wire them up to. I had heard about it 3rd hand , and it is said to make the fridge much more efficiant. Any info muchly appreciated. Thanks Des.
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FollowupID: 10079

Follow Up By: wal - Sunday, Mar 30, 2003 at 09:35

Sunday, Mar 30, 2003 at 09:35
Hi Ray
Thanks for the reply, but was hopeing for a bit more info regarding how to actually wire it up, i wouldent think any fan would be required to go continually without a break. I've got a feeling i have read something in detail about this awhile back but cant seem to put my hand on it, can anyone tell me if it;s on this site or did I come across it somewhere else.
Regards Wal
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FollowupID: 10103

Follow Up By: Ray M (Vic) - Sunday, Mar 30, 2003 at 09:50

Sunday, Mar 30, 2003 at 09:50
I used power supply fans from defunct computers wired through a switch to the battery on the drawbar. They draw very little current but you could switch them with a thermostat if you desire.Hooroo
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FollowupID: 10105

Reply By: sean - Saturday, Mar 29, 2003 at 22:23

Saturday, Mar 29, 2003 at 22:23
I got a caravan from Vic and found that in teh NT (where I live) the fridge would not get below 10 degrees so I checked the fridge, levelled the van, rechecked the fridge and then took it to get serviced. Anyway ended up with brand new electrolux fridge (and a lighter wallet) and guess what, would not get below about 8 or 10 degrees.

So I installed a computer fan (12 volt) exhausting air out of an additional vent that I put in the van wall. The fridge now works better (only just acceptable ) and the fan only draws 0.2 amps so can be run on battery for a long time. Fan cost about $20.00 from and electrical store like Dick Smiths or Tandy.

Sean
AnswerID: 16413

Follow Up By: Flesh - Sunday, Mar 30, 2003 at 16:08

Sunday, Mar 30, 2003 at 16:08
Dave,

Better check the length of some of these strings and cut them up, or fix table size.

Merv
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FollowupID: 10123

Follow Up By: joc45 - Sunday, Mar 30, 2003 at 22:08

Sunday, Mar 30, 2003 at 22:08
sorry guys, won't post url's like this again.
Gerry
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FollowupID: 10132

Reply By: Bob Y. - Sunday, Mar 30, 2003 at 10:13

Sunday, Mar 30, 2003 at 10:13
Wal,

There are a number of solar vents that would do this job, but some are expensive, and you would have to cut a hole in roof of 'van(there's usually enough there once it rains), and the van needs to be in the sun. At night they work as a passive vent.

These are available from marine supplies such as Whitworths. Also available are bilge blowers, which shift plenty of air, but have current draw of nearly 3 amps to do so. Computer fans wouldn't be as hungry as this. Hooroo...
AnswerID: 16434

Reply By: Janset - Sunday, Mar 30, 2003 at 11:59

Sunday, Mar 30, 2003 at 11:59
Hi guys.

I recently purchased a solar fridge fan from the 12 Volt shop for $80.

Installation instructions were to remove the bottom external vent to the fridge and use the supplied plastic tie straps to secure the fan to the inside on the opposite side to the flame.

The reasoning is that ,all that is required is the movement of air up thru the coil and the cooling vent.

It is not a suction fan, for a fan to suck it has to be a very large, and with size come power consumption.

I do not have a thermometer in my fridge but I can say that I always have ice cubes to put into my drinks :-)

The small solar panel is about the size of an A4 sheet of paper and it still works under overcast conditions, albeit not as fast, but still quite efficient.

Hope this helps
AnswerID: 16440

Reply By: David - Sunday, Mar 30, 2003 at 15:21

Sunday, Mar 30, 2003 at 15:21
It won't help if you already have a fridge, BUT if you are considering upgrading a c'van frig go for 12v (eg Vitrifrigo or Waeco). It won't run on gas, but in every other respect it is superior-
1. runs off level 2. works even when it's 40 degrees celsius 3. It'll make ice 30 mins after turning on 4. draws about 2.5 to 3 amps for about 50 percent duty cycle vs 12 amps continuous for a 3 way frig. (ie about 1 tenth as much electricity consumed.
I ditched a nearly brand new Electrolux in December (sold it in the Trading Post) and went for a 130litre Vitrifrigo- bloody fantastic compared to the useless bloody Electrolux!!
I would never buy another 3 way unless I absolutely HAD to run on gas.
PS. One 80 watt solar panel comfortably runs the frig- beats running out of gas...... and the frig WORKS!!!!
AnswerID: 16448

Reply By: ThePublican - Monday, Mar 31, 2003 at 10:09

Monday, Mar 31, 2003 at 10:09
12 volt computer fan fits horizontaly inside vent next to temp dial,,just run wires + and - to 12 volt power source ,check to see that fan is extracting NOT blowing air ... in archives look under fridges/ chescold/axel/ ,,june ,july last year?? power draw for fan if remember correctly is 0.14amps . cost of fan is $11/13 at most computer repair shops.
AnswerID: 16478

Reply By: ThePublican - Monday, Mar 31, 2003 at 11:38

Monday, Mar 31, 2003 at 11:38
Archive post id no 1204
AnswerID: 16489

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