The Danfoss compressor works in what are called duty cycles, the hourly period when the compressor is actually on and working. I sat down with a fridge specialist and learned how to charge the fridge but that was some time ago and my memory is rusty. All that changed with the release of the Danfoss compressor refrigerator in 1998.
Logic (not knowledge) tells me if you need to re-gas, your gas has gone somewhere(? The only recourse of the boat owner will then be to employa qualified person, at some cost. On a seriously overcharged system it may take repeated releases before the symptoms of a slight overcharge appear. With ambient temperatures in the upper 70s and at a temperature setting of 4.5 (1 lowest 7 highest), the refrigerator typically consumes about 30 watts or 2.5 amp hours DC. Last but not least, the Danfoss DC compressor refrigerator requires only minimal ventilation. After 45 days at sea, the sailing cargo ship KWAI has docked in San Francisco with 96 tons of recovered plastic, including ghost nets and derelict fishing gear from the Great Pacific Garbage Patch. Some are installed without any insulation, whatsoever. Again, it pays to do some research ahead of time. This will do it but you need an adapter from the R134a car type connector to a 1/4 inch schraeder valve. Western Australia. The gas/electric absorption refrigerator plays a big role in these comforts. This is usually achieved by screwing in the handle on the top of the valve assembly to pierce the can, but follow specific instructions supplied with your equipment. Unfortunately, some shops do a poor job. A marine refrigerator is wonderful thing as long as its working. Mello Mike is an Arizona native, author, and the founder of Truck Camper Adventure. If youre hiring this work out, its important to inspect their work before you pay them. Many small boat refrigeration systems use one of the small Danfoss compressors to power their system. There will probably be a sound similar to a mountain stream coming from the evaporator. This means you can run a compressor refrigerator while driving without having to worry about the pilot light blowing out. Run the system for a while, then add a small amount of refrigerant. Queensland Ohio The suction side service valve normally will be on a stub of tubing that is connected directly to the top of the compressor. Theres really only one. As a general rule refrigeration systems do not lose gas unless there is a leak so topping up is probably not the solution without repairing the leak first. One common problem is poor performance on summer days when ambient temperatures are high (90 degrees and higher). Moreover, the Danfoss compressor refrigerator takes only a couple of hours to reach its set operating temperature. You should see the frosted area on the evaporator increase after adding some refrigerant. Finally, I take it that I don't need to crack the discharge port, just pressurize the suction side a bit? Powered by WordPress. Good luck. This archaic process of refrigeration works well, but, as we will explain later, it also has its limitations in certain RV applications. Not only that but as the cruising multihull market continues to mature, the new features are not just read more, The National Sailing Hall of Fame (NSHOF) announced its 12th class of inductees. This is backed up by the very poor instructions that comes with my gauge kit. Never seen a Danfoss based system with a capacity plate on it. Run the system long enough for the symptoms of an overcharge to exist and then remove the valve cap from the suction side service valve. As the name implies, the key component that makes this type of refrigerator possible is the Danfoss BD35F compressor. If the system has been installed correctly, a short length (approx 15cm) of insulation supplied with the system should be positioned on the tubing starting where it exits the refrigerated box. do this in short busts of say 5 seconds then allow a minute or 2 for the system to stabilise. It was time to find out. At this point, you may be wondering what this compressor does. They all use the Danfoss DC compressor, so generally speaking, they all offer the same performance and reliability. The name Danfoss is a bit of a household word in the marine/RV industry which is why many still refer to this compressor as a Danfoss. Annoyingly Calder's guide doesn't really cover Danfoss and he refers to using both the high pressure and low pressure side of the gauge, yet I remember my fridge specialist using only the low pressure side. For an evaporator system like this, the pressure will drop to 3 to 7psi as the box cools down. All rights reserved. At start up, turn the temperature knob to the maximum setting (for older Dometic CR-1110 models this is 7, newer models maximum). New Mexico He currently rolls in a 4WD Ram 3500 outfitted with a SherpTek truck bed with a Bundutec Roadrunner mounted on top. Thanks! During the construction of our camper, we had the choice of installing either a Dometic CR-1110 Danfoss compressor refrigerator or the standard Dometic three-way absorption refrigerator. Minnesota Exactly how much amperage depends on several factors including the refrigerators temperature setting, the ambient temperature, the available voltage, how well the unit is insulated, and whether the refrigerator is working to get the temperature cold at start-up or working to maintain the operating temperature. Delaware Too much refrigerant in the system will result in liquid still evaporating back to a gas past the end of the evaporator and inside the tubing going back to the compressor. It wasnt that long ago when the ammonia absorption refrigerator was the only choice for RV owners. Working with refrigerants involves potentially dangerous pressures and temperatures and precautions must be taken to avoid injury.
This is when the fridge temperature is close to the required temperature but the compressor is still running. Manitoba I do not cover the use of a vacuum pump and so this is not suitable for a completely empty system or a system with moisture in the refrigerant circuit. Nova Scotia California Its a dreadful state of mind that consumes you when your reefer doesnt deliver the goods. As for the installation of the Danfoss DC compressor refrigerator, insulation of the area surrounding the refrigerator is key. Its important to remember that this isnt a problem with the manufacturer, but with the shop that performed the installation. I purchased r134a in a very nice canister with a pressure gauge, and have absolutely no idea what to do next. Fan Mod: Giving Your Absorption Refrigerator a Boost, Life on the Road with a DC Compressor Refrigerator, Honda Launches new EU3200i Portable Generator, Breaking: KingStar Camino Updates Include New Dry Bath Slide-Out Option, 5 Best Truck Campers for the Ram Power Wagon, 2023 Ford F-150 Raptor R Raises Bar in Off-Road Performance, For Sale: 2007 Chevrolet Silverado 3500 Duramax Diesel ($29,500), Sold: 2007 Ram 3500 2015 XPCamper V1 Flatbed ($154,900), Sold: Rare 2016 Livin Lite 10 Ford Ed. That said, these days they are more popular than ever on cruising boats, thanks to advances in sails, sailhandling technology and boat design in general. Danfoss was recently bought out by the German company, Secop, but Secop still maintains the Danfoss manufacturing operation in Denmark. All content is copyright of Mello Mike and Truck Camper Adventure 2011-2022. Then I connected one of the two valves on the charging kit to the refrigerant canister, making sure the other onethe manifold valvewas closed. The quality of construction and the amount of insulation, or lack of it, is where the good units separate themselves from the mediocre ones. Reading assorted treatises on marine refrigeration only elevated my angst. I will add a disclaimer that you should hold a refrigerant handling qualification to carry out this work and recommend that if you are unsure how to charge a system you should contact a professional. Sorry about that I have not actually used one of those fittings I have always used standard refrigeration gauges as I have them already. Massachusetts He also does some RV consulting, repairs, and inspections on the side. Although the Danfoss DC compressor is much more efficient running on 12 volt power than the ammonia absorption type, it still consumes a considerable amount of amperage during a 24 hour day. If additional insulation has been added, it may be concealing this symptom and should be removed. Once the box was fully cooled down, this would almost certainly drop to 7psi or thereabouts. A standard car air conditioning top up kit can then be used to top it up. If you hire a technician to work on your Danfoss based system the first question you should ask is "What's the amount of refrigerant in the system"? This also means you can run it while fueling up at a gas station without concern of an explosion. 5 With the compressor running, I opened the manifold valve and let the compressor suck in the gas for five seconds or so until the gauge indicated 20 psi. South Dakota Gone are the days of having to turn on your absorption refrigerator the day before your trip to ensure its cold. Do you know what the process port is used for? In this type of system, the temperature of the evaporator is directly related to the amount of refrigerant in the system. If you have any problems you can give me a call I have a vac pump you could borrow if needed as I see you are local. undesirably, into the atmosphere). Add the refrigerant in small amounts (say 5 seconds) and then let the system settle down for approximately 10 minutes. It pays to do some research ahead of time to see if theyre competent installers. - KK7TCA. Whatever your choice, and as long as you have a capable battery charging system, youll be sure to enjoy the benefits that the Danfoss DC compressor refrigerator offers. A communications expert and licensed ham radio operator, he retired from the U.S. Navy in 2004 as a CWO3 after 24 years, worked in project management, and now runs Truck Camper Adventure full-time. Victoria 6 After a few minutes, the pressure dropped to 7psi and then down to 3, so I gave the system another 5-second charge. This should allow some refrigerant gas to escape and maybe some refrigerant liquid. Another issue to be aware of relates to the faulty installation of these refrigerators. Typically, weve found that the Dometic CR-1110 doesnt require that much current to operate. The refrigerator compressor basically does two things: it raises the pressure of the refrigerant vapor used in the refrigerator and helps to maintain the vapors flow rate. Rhode Island Locate the end of the charging hose that has a valve stem depressor, screw the opposite end onto the adapter. Nothing illustrated this better than the 2021 Atlantic Rally for Cruisers (ARC), which departed Las Palmas de Gran Canaria (in Spains Canary Islands) in November and wrapped up in December on the island of St. Lucia read more, There is, of course, nothing new about bowspritssailing ships have been using them for centuries. After running for a time, there should be a slight coating of frost all over the surface of the evaporator with no condensation or frost on the exposed section of copper tube back to the compressor or condensation on the compressor itself.
Logic (not knowledge) tells me if you need to re-gas, your gas has gone somewhere(? The only recourse of the boat owner will then be to employa qualified person, at some cost. On a seriously overcharged system it may take repeated releases before the symptoms of a slight overcharge appear. With ambient temperatures in the upper 70s and at a temperature setting of 4.5 (1 lowest 7 highest), the refrigerator typically consumes about 30 watts or 2.5 amp hours DC. Last but not least, the Danfoss DC compressor refrigerator requires only minimal ventilation. After 45 days at sea, the sailing cargo ship KWAI has docked in San Francisco with 96 tons of recovered plastic, including ghost nets and derelict fishing gear from the Great Pacific Garbage Patch. Some are installed without any insulation, whatsoever. Again, it pays to do some research ahead of time. This will do it but you need an adapter from the R134a car type connector to a 1/4 inch schraeder valve. Western Australia. The gas/electric absorption refrigerator plays a big role in these comforts. This is usually achieved by screwing in the handle on the top of the valve assembly to pierce the can, but follow specific instructions supplied with your equipment. Unfortunately, some shops do a poor job. A marine refrigerator is wonderful thing as long as its working. Mello Mike is an Arizona native, author, and the founder of Truck Camper Adventure. If youre hiring this work out, its important to inspect their work before you pay them. Many small boat refrigeration systems use one of the small Danfoss compressors to power their system. There will probably be a sound similar to a mountain stream coming from the evaporator. This means you can run a compressor refrigerator while driving without having to worry about the pilot light blowing out. Run the system for a while, then add a small amount of refrigerant. Queensland Ohio The suction side service valve normally will be on a stub of tubing that is connected directly to the top of the compressor. Theres really only one. As a general rule refrigeration systems do not lose gas unless there is a leak so topping up is probably not the solution without repairing the leak first. One common problem is poor performance on summer days when ambient temperatures are high (90 degrees and higher). Moreover, the Danfoss compressor refrigerator takes only a couple of hours to reach its set operating temperature. You should see the frosted area on the evaporator increase after adding some refrigerant. Finally, I take it that I don't need to crack the discharge port, just pressurize the suction side a bit? Powered by WordPress. Good luck. This archaic process of refrigeration works well, but, as we will explain later, it also has its limitations in certain RV applications. Not only that but as the cruising multihull market continues to mature, the new features are not just read more, The National Sailing Hall of Fame (NSHOF) announced its 12th class of inductees. This is backed up by the very poor instructions that comes with my gauge kit. Never seen a Danfoss based system with a capacity plate on it. Run the system long enough for the symptoms of an overcharge to exist and then remove the valve cap from the suction side service valve. As the name implies, the key component that makes this type of refrigerator possible is the Danfoss BD35F compressor. If the system has been installed correctly, a short length (approx 15cm) of insulation supplied with the system should be positioned on the tubing starting where it exits the refrigerated box. do this in short busts of say 5 seconds then allow a minute or 2 for the system to stabilise. It was time to find out. At this point, you may be wondering what this compressor does. They all use the Danfoss DC compressor, so generally speaking, they all offer the same performance and reliability. The name Danfoss is a bit of a household word in the marine/RV industry which is why many still refer to this compressor as a Danfoss. Annoyingly Calder's guide doesn't really cover Danfoss and he refers to using both the high pressure and low pressure side of the gauge, yet I remember my fridge specialist using only the low pressure side. For an evaporator system like this, the pressure will drop to 3 to 7psi as the box cools down. All rights reserved. At start up, turn the temperature knob to the maximum setting (for older Dometic CR-1110 models this is 7, newer models maximum). New Mexico He currently rolls in a 4WD Ram 3500 outfitted with a SherpTek truck bed with a Bundutec Roadrunner mounted on top. Thanks! During the construction of our camper, we had the choice of installing either a Dometic CR-1110 Danfoss compressor refrigerator or the standard Dometic three-way absorption refrigerator. Minnesota Exactly how much amperage depends on several factors including the refrigerators temperature setting, the ambient temperature, the available voltage, how well the unit is insulated, and whether the refrigerator is working to get the temperature cold at start-up or working to maintain the operating temperature. Delaware Too much refrigerant in the system will result in liquid still evaporating back to a gas past the end of the evaporator and inside the tubing going back to the compressor. It wasnt that long ago when the ammonia absorption refrigerator was the only choice for RV owners. Working with refrigerants involves potentially dangerous pressures and temperatures and precautions must be taken to avoid injury.
This is when the fridge temperature is close to the required temperature but the compressor is still running. Manitoba I do not cover the use of a vacuum pump and so this is not suitable for a completely empty system or a system with moisture in the refrigerant circuit. Nova Scotia California Its a dreadful state of mind that consumes you when your reefer doesnt deliver the goods. As for the installation of the Danfoss DC compressor refrigerator, insulation of the area surrounding the refrigerator is key. Its important to remember that this isnt a problem with the manufacturer, but with the shop that performed the installation. I purchased r134a in a very nice canister with a pressure gauge, and have absolutely no idea what to do next. Fan Mod: Giving Your Absorption Refrigerator a Boost, Life on the Road with a DC Compressor Refrigerator, Honda Launches new EU3200i Portable Generator, Breaking: KingStar Camino Updates Include New Dry Bath Slide-Out Option, 5 Best Truck Campers for the Ram Power Wagon, 2023 Ford F-150 Raptor R Raises Bar in Off-Road Performance, For Sale: 2007 Chevrolet Silverado 3500 Duramax Diesel ($29,500), Sold: 2007 Ram 3500 2015 XPCamper V1 Flatbed ($154,900), Sold: Rare 2016 Livin Lite 10 Ford Ed. That said, these days they are more popular than ever on cruising boats, thanks to advances in sails, sailhandling technology and boat design in general. Danfoss was recently bought out by the German company, Secop, but Secop still maintains the Danfoss manufacturing operation in Denmark. All content is copyright of Mello Mike and Truck Camper Adventure 2011-2022. Then I connected one of the two valves on the charging kit to the refrigerant canister, making sure the other onethe manifold valvewas closed. The quality of construction and the amount of insulation, or lack of it, is where the good units separate themselves from the mediocre ones. Reading assorted treatises on marine refrigeration only elevated my angst. I will add a disclaimer that you should hold a refrigerant handling qualification to carry out this work and recommend that if you are unsure how to charge a system you should contact a professional. Sorry about that I have not actually used one of those fittings I have always used standard refrigeration gauges as I have them already. Massachusetts He also does some RV consulting, repairs, and inspections on the side. Although the Danfoss DC compressor is much more efficient running on 12 volt power than the ammonia absorption type, it still consumes a considerable amount of amperage during a 24 hour day. If additional insulation has been added, it may be concealing this symptom and should be removed. Once the box was fully cooled down, this would almost certainly drop to 7psi or thereabouts. A standard car air conditioning top up kit can then be used to top it up. If you hire a technician to work on your Danfoss based system the first question you should ask is "What's the amount of refrigerant in the system"? This also means you can run it while fueling up at a gas station without concern of an explosion. 5 With the compressor running, I opened the manifold valve and let the compressor suck in the gas for five seconds or so until the gauge indicated 20 psi. South Dakota Gone are the days of having to turn on your absorption refrigerator the day before your trip to ensure its cold. Do you know what the process port is used for? In this type of system, the temperature of the evaporator is directly related to the amount of refrigerant in the system. If you have any problems you can give me a call I have a vac pump you could borrow if needed as I see you are local. undesirably, into the atmosphere). Add the refrigerant in small amounts (say 5 seconds) and then let the system settle down for approximately 10 minutes. It pays to do some research ahead of time to see if theyre competent installers. - KK7TCA. Whatever your choice, and as long as you have a capable battery charging system, youll be sure to enjoy the benefits that the Danfoss DC compressor refrigerator offers. A communications expert and licensed ham radio operator, he retired from the U.S. Navy in 2004 as a CWO3 after 24 years, worked in project management, and now runs Truck Camper Adventure full-time. Victoria 6 After a few minutes, the pressure dropped to 7psi and then down to 3, so I gave the system another 5-second charge. This should allow some refrigerant gas to escape and maybe some refrigerant liquid. Another issue to be aware of relates to the faulty installation of these refrigerators. Typically, weve found that the Dometic CR-1110 doesnt require that much current to operate. The refrigerator compressor basically does two things: it raises the pressure of the refrigerant vapor used in the refrigerator and helps to maintain the vapors flow rate. Rhode Island Locate the end of the charging hose that has a valve stem depressor, screw the opposite end onto the adapter. Nothing illustrated this better than the 2021 Atlantic Rally for Cruisers (ARC), which departed Las Palmas de Gran Canaria (in Spains Canary Islands) in November and wrapped up in December on the island of St. Lucia read more, There is, of course, nothing new about bowspritssailing ships have been using them for centuries. After running for a time, there should be a slight coating of frost all over the surface of the evaporator with no condensation or frost on the exposed section of copper tube back to the compressor or condensation on the compressor itself.