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Car Forum / Australian Car Forums / 4x4 Cars (Australian group) / August 2006Three way fridge help wanted
I have a Dometic Three Way Fridge in my caravan. The 12V part does not work , the two wires which connect to the Car Plug do not make a circuit. I am thinking of using a Waeco 12 to 240 A/C Volt converter which only puts out 200Watts, would this be sufficient to run the Fridge element whilst travelling. The fridge is Not a compressor type. Thank you for any help. ---------------------------- Robin at Crystal Brook. Photos: http://www.shutterfly.com/osi.jsp?i=67b0de21b330ceeea457 Dirtcircuit : http://www.trainweb.org/mystation/hotrod.htm History of Steam: http://au.geocities.com/comptroller_pboro/ C.Brook: http://au.geocities.com/comptroller_pboro/CrystalBrook.htm My Main Site: http://www.trainweb.org/mystation Stevens Motors: http://au.geocities.com/comptroller_pboro/laura.htm Online Sales: http://www.mrstationmaster.biz/myfunds.html AusRailPhotos: http://www.clubphoto.com/reward.php?id=289811&mid=members5_robin334854&pwd= >I have a Dometic Three Way Fridge in my caravan. The 12V part does not work > , the two wires which connect to the Car Plug do not make a circuit. I am [quoted text clipped - 4 lines] > > ---------------------------- Whats the 240 Rating on the compliance plate? unless its a compressor type the are thermo type and draw a sh.t load of current. piss it off and buy a Wacco or Engel. > I have a Dometic Three Way Fridge in my caravan. The 12V part does not work > , the two wires which connect to the Car Plug do not make a circuit. I am > thinking of using a Waeco 12 to 240 A/C Volt converter which only puts out > 200Watts, would this be sufficient to run the Fridge element whilst > travelling. The fridge is Not a compressor type. Thank you for any help. My Electrolux (nee Dometic) says 130W on 240 Volt and 135W on 12 Volts. Whether 200W is enough when you start it up is anyone's guess. I had a similar problem with my fridge. I cured it by putting in a sepparate plug designed specifically for high current loads. Bought mine at Autopro. Wired it up with a relay through the ignition and used heavy duty wire to minimise voltage drop in the car and in the van. These fridges draw between 5 and 10 amps continously depending on model. I believe the Waeco and Engel only draw 2 to 3 amp intermittantly maybe only 15 minutes in the hour. Hope this helps. Cheers Trev >I have a Dometic Three Way Fridge in my caravan. The 12V part does not work > , the two wires which connect to the Car Plug do not make a circuit. I am [quoted text clipped - 15 lines] > AusRailPhotos: > http://www.clubphoto.com/reward.php?id=289811&mid=members5_robin334854&pwd= > I have a Dometic Three Way Fridge in my caravan. The 12V part does > not work , the two wires which connect to the Car Plug do not make a [quoted text clipped - 15 lines] > AusRailPhotos: > http://www.clubphoto.com/reward.php?id=289811&mid=members5_robin334854&pwd= You have to find out the current (or watts) for the 250v heater. Once you know that you can answer your own enquiry, these 'element' type units will not load your inverter down at start up so if your fridge is under 200watts that size inverter should suffice. AFAIK the Waeco works the other way and converts 240vac down to 12vdc for the compressor. Cheers ......... Rheilly P Where theres a will, I want to be in it. Many thanks for your help, I will purchase the inverter which plugs into the cigarette lighter .I reckon the thing would be more efficient if connected straight to the battery. The inverter has a 240 volt 3 pin out put. How best to connect this to the fridge power plug, Would it be best to use the Caravan 240v system or connect straight to the fridge. Doing it this way I would Not be able to use the interior lights. I do realise that the engine should be kept running whilst parked for short stops. Thanks once again. ---------------------------------- Robin at Crystal Brook. > Many thanks for your help, I will purchase the inverter which plugs into > the [quoted text clipped - 7 lines] > > Robin at Crystal Brook. I still think the advice someone else gave you of putting in a separate 12v High Amp plug is you best option. We use them for our 12v boat trailer winch and they supply uninterrupted power at up to 50 amps. All you have to do is run heavy cable from your battery direct to your tow bar. This is not hard to do. Preferably run it through an isolation switch, which can be purchased from just about anywhere, so that you can turn the power off when you want to without having to disconnect it from the battery. As the other person suggested you may even want to mount a relay in line which is activated by your ignition switch. The up side to that is that your fridge will only run while your ignition is turned on. This could also be a down side as well if you are camped overnight. The inverter will work for you but keep in mind the inverter itself also draws power so, if your fridge currently draws 10 amps per hour now, expect to lose up to an extra 3 or 4 amps for the inverter. Do you ever use the gas part of your 3 way fridge? If not I would very seriously consider getting rid of it and replacing it with a unit that runs off 12v only. These are the most efficient 12v fridges you can get. The 3 way fridges are not as efficient. I have found the best is Evakool Fridges. I use one in my 4WD and my boat. Best regards Garry |
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