Skill 1

   修理制冷设备时，直接用磷铜焊条焊接冷凝器的铁管接头比较困难，尤其是初学者，虽反复处理但焊口还是不佳。在焊铁管时，可先用砂纸将焊接处除漆去锈，若有镀层必须刮除。焊枪烧热铁管后，用黄铜焊条蘸硼砂在焊接处先熔焊上一层薄黄铜焊料，再套上需焊接铜管，最后用磷铜焊条焊接就非常便利。

When repairing refrigeration equipment, it is difficult to weld the iron pipe joint of condenser directly with phosphorus copper electrode. Especially for beginners, the weld is not good despite repeated treatment. When welding iron pipe, sandpaper can be used to remove the rust from the welds, and if there is any coating, it must be scraped away. After the iron pipe is heated by a welding torch, a thin layer of brass solder is first melted and welded with a brass electrode dipped in borax at the welding site, then coated with a brass tube to be welded, and finally welded with a phosphorus-copper electrode is very convenient.

技巧二

Skill two

    便携式焊具用的小钢瓶，在与大液化气瓶对接充装时，在室温下充入气量往往很少。可在充气前，先将小钢瓶放在冰箱中冷冻数小时，再将大液化气瓶倒置与小瓶对接充装，这样就能增加充入量，给使用带来方便。

Small cylinders for portable welding tools often have little gas filling at room temperature when docked with large LPG cylinders. Before inflating, the small cylinder can be placed in the refrigerator for several hours, and then the large LPG cylinder can be inverted and docked with the small bottle for filling, so that the filling amount can be increased and the use is convenient.

 技巧三

Skill three

   维修中使用的三通阀及制冷剂开瓶阀，时间一长密封垫圈就会老化，从而失去密封作用。有些规格的胶圈不易买到，可用内外径适当的收录机机芯传动轮胶圈代替。更换三通阀阀针旋杆密封胶圈时，在胶圈与旋杆间涂一些合成润滑硅脂(普通机油会加剧胶圈老化)，能加强密封作用。

The three-way valve and refrigerant bottle opening valve used in the maintenance, the sealing washer will be aging for a long time, thus losing the sealing effect. Some sizes of aprons are not easy to buy, and they can betsyuesao.75ix.com lfmumen.75ix.comqhdmumen.75ix.com zidongmenb.75ix.com yinxiangb.75ix.comjixieb.75ix.com replaced by the driving wheels and Rubber Aprons of the cassette recorder with suitable internal and external diameters. When replacing the three-way valve needle screw rod sealant ring, apply some synthetic lubricating silicone grease between the apron and the screw rod (ordinary oil will aggravate the aging of the apron), which can strengthen the sealing effect.

技巧四

Skill four

   遇到修理冷冻室很大的冰箱蒸发器锈蚀故障时，若需在原装栅格式蒸发器上盘弯铜管进行替换，可用捆扎电器线路的尼龙锁扣扎带进行捆扎，既快又牢，特别适合上门修理时采用。

In case of corrosion of evaporator in refrigerator with large refrigeration chamber, if it is necessary to replace the curved copper tube on the plate of original grid evaporator, the nylon lock buckle belt can be used to bind the electrical circuit, which is fast and fast, especially suitable for door-to-door repair.

技巧五

Skill five

    使用年久的制冷设备，冷凝器钢窗栅条间会有很多絮状尘垢，不易清除干净。修理时，可采用无助氧液化气焊枪喷出的较弱散火，将其烧掉，就很容易用毛刷清理了。

There will be a lot of flocculent dirt between the steel window grids of condenser in the refrigeration equipment with long service life, which is difficult to clean up. When repairing, the weak spark ejected from the oxygen-free liquefied gas welding torch can be used to burn it off and it can be easily cleaned up with a brush.

技巧六

Skill six

    修理冰箱时若需抽真空，可利用冰箱自身的压缩机自抽空。首先将原装过滤器焊上三孔型，进气孔旁的旁通孔中，焊上一段较长的细铜管用于排气，把管口插入一瓶冷冻油中，焊好其它接口并装好三通阀和氟里昂气瓶，关闭阀门，通电运转抽空。此时应注意观察，当冷冻油中的排气管口不再冒气泡时即旋开三通阀门，注入少量制冷剂后关闭阀门，并在排气口尚未排完制冷剂气泡前，快速用封口钳在靠近过滤器处卡住旁通排气管路，剪去多余部分，焊死该口，即可停机或充注制冷剂。

If you want to vacuum the refrigerator, you can use the compressor of the refrigerator itself to evacuate. Firstly, the original filter is welded with three holes, and a long thin copper pipe is welded into the bypass hole beside the air intake hole for exhaust, and the pipe mouth is inserted into a bottle of refrigerated oil. The other joints are welded and the three-way valve and the Freon cylinder are installed. The valve is closed, and the valve is electrically operated and emptied. Attention should be paid to this point, when the exhaust pipe in the refrigerated oil is no longer bubbling, immediately unscrew the three-way valve, inject a small amount of refrigerant after closing the valve, and in the exhaust port has not exhausted refrigerant bubbles before quickly clamping the bypass exhaust pipe near the filter, cutting off the excess part, welding dead, can stop the machine. Or refrigerant.