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OEM产能信息

作者:Richard Hawkins, MACS贡献者

在我 以前的博客文章, we covered how OEM产能信息 provided by the various information sources can create confusion. 请看下图.

上图来自前一篇博客文章.

Unfortunately, it can get worse, so we will look at a couple of other examples.

示例# 1. When clicking on “Refrigerant Oil” in the website of an information source,  唯一出现的容量信息如下:标准:油容量内新 压缩机 [120 + 15 cc (4.0 + 0.5 fl. oz.)] – Remaining oil amount in removed 压缩机 assembly = Oil amount to be removed before installation.”  That is the only information about oil capacity which is provided for this vehicle.

Remember this information came from the OEM in their service information. They are stating that their replacement 压缩机 for this vehicle contains [120 + 15 cc (4.0 + 0.5 fl. oz.)]. 有趣的是,他们使用了“120 + 15cc”和4.0 + 0.5 fl. oz.“如果他们只说135毫升或4毫升,事情就简单多了.5 oz.

If you are installing an OEM replacement 压缩机 in this example then it “应该” 包含4.5盎司的油 but if the 压缩机 is not drained and the oil measured, 具体数量还不得而知.  也, 如果安装的是售后压缩机, there is no standard that exists in the industry regarding the amount of oil that might be shipped in a replacement 压缩机.  It might have no oil in it, a partial charge, or a full charge or even more than a full charge. To make matters worse, the OEM does not provide the total system capacity for this vehicle.

What might occur if someone took this information and just “ran with it” without considering what had been done with other parts of the system (drier replacement, 冷凝器替代, 冲洗, 等.) We will use the same example which was used in the last blog article except for this vehicle having a slightly smaller refrigerant capacity.

  • The vehicle has suffered a catastrophic 压缩机 failure and 压缩机 replacement is necessary.
  • 它是一个单一的膨胀阀系统,有一个19.40-ounce制冷剂能力.
  • 装有干燥器的冷凝器正在更换.
  •  系统的剩余部分正在被冲洗.
  • 作为一个结果, 系统是干燥的, and the total system oil capacity needs to be installed in the 压缩机.

假设更换的压缩机包含4个.5盎司的油. The 压缩机 which was removed from the vehicle is drained and the oil measured, and it contains 2.25盎司的油. 技术人员排水2.25盎司来自替换压缩机. 剩下2个.25 ounces in the 压缩机 and that is the amount that will be in the system. 2.25 ounces might be enough oil for a system which uses a 压缩机 with an oil separator (which retains most of the oil in the 压缩机) and has a 12-ounce refrigerant capacity. 

然而, this vehicle uses a 压缩机 without an oil separator and has 19.40盎司,制冷剂容量. As stated earlier, unfortunately the OEM does not provide the total system oil capacity.  然而, we know from dealing with similar systems where the oil capacity is provided that 2.25盎司远远不够.  

A system like this would be expected to have a total system oil capacity in the range of about 4.5 to 5.0盎司.  如果安装了压缩机,系统中只有2个压缩机.25盎司的油 then the result will be a very short life for the 压缩机 and a catastrophic failure.  Experienced technicians will recognize there is a potential problem with this information.  然而,  I can tell you from personal experience on a tech line that a lot of inexperienced technicians have made this mistake.

例# 2. When clicking on “Refrigerant Oil” the only thing that comes up is: “ND 8 or equivalent”. 这里没有任何关于能力的内容. It is amazing that an OEM would not provide the system oil capacity for an A/C system but it does occur with some regularity. 与例1相比, it might actually be better as it would force an inexperienced technician to do some research instead of experiencing  the results outlined.

 当涉及到空调系统和油容量信息时, 谨慎 必须遵守.

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