one、Refrigeration system common maintenance tool
1、R410ASpecial expansion tubeThe expansion tube is used to make the flavors and cups of copper tubes.(Cylindrical port)Special tool。
The talent shape of the flare is used for threaded connections or is not suitable for connecting to the interface.，The purpose is to ensure the sealing and intensity of the interface site;The cup-shaped port is used for two different pipe diameter copper pipe connections.，A pipe is inserted into the diameter of another tube。The shape of the flare and cup-shaped mouth is as shown。
2、Double head pressure gauge
Double pressure table is the pressure of refrigeration system、Vacuum、Special tool for charging refrigerant，Both table repair valves and two types of double press valves。
Pressure meter used to monitor the pressure within the refrigeration system，There are two valve switches and three interfaces on the valve body.，If the intermediate interface is connected to the cooling system，Low voltage interface, vacuum pump，High voltage interface, refrigerant steel bottle，Open the valve and(Valve on refrigerant cylinder close)Vacuum。
3、Vacuum pump
Vacuum pump is a special tool for excluding air in refrigeration system。Take evacuation for the refrigeration system after maintenance，Pull out the gas inside the system，Keep the system。
If the system vacuum is not required during the vacuum process，Description System There is a leak，Further leakage。
4、Electronic leak detector
Leak analyzer is still necessary to leak the refrigeration system，Some naked causable leaks are difficult to measure，You can try to determine if there is a leak problem with leak detects.。requires attention，can not be usedCFCsorHCFCsFreon leak detector，due toR410ANo chlorine in cold media。
5、R410ARefrigerant
R410AIs mixed cold media，Depend onHFC32andHFC125Two refrigerant mix；No chlorine-free refrigerant，due toHFCFree chlorine，Reduce the lubrication performance of the compressor，Therefore, the material of the friction site is therefore、Freezer oil、Resin material is replaced，becomeR410ARefrigerant special compressor，No compatibility with previous refrigerator oil，Using a synthetic oil that can be soluble，And improved pressure，System cycle pressure rises，Correspondence of the corresponding airtight test，Instrument tool、Cold media piping material and thickness change。
6、 Cutting tube：
The cutting tube is specifically used to cut the copper tube、Metal tube such as aluminum tube。
How to use the cutting tube：Place the tube between the roller and the cutter，The side wall of the tube should close the middle position of the two rollers.，Adjust the knife to clamp the knife of the cutter with the pipe，Then rotational adjustment knob，Cut the blade of the cutter into the wall；Capillary cutting should use specialized capillary pliers，Or clamp the capillaries with sharp scissors to turn out traces，Then use the hand to gently break。
7、Chamferr
The chamfering device is put three uniform distribution and a certain angle of scraper in a plastic pipe.。Cutting the tube，Often there is a tubular end shrinkage、Barbing and other defects，Generally, although the file can be corrected，Low efficiency，Golden crumbs caused by files in the knife are not easy to remove
(flaring end of brass tube)8、Amplifier
The expansion tube is used to make the flavors and cups of copper tubes.(Cylindrical port)Special tool。
How to use the expansion device: When the expansion is expanded, answered the copper pipe expansion and use the file to fix the flat.，The copper tube is then placed in a clamp of the corresponding pipe diameter，Tighten the fastening nut on the fixture，Clamp the copper pipe。The cone is then tightened on the top pressure screw of the bow.，Secure the arcuades on the fixture，Make the center of the cone with the center of the copper tube；Then turn the handle on the top pressure screw clockwise clockwise，Top the tap，Rotate the screw evenly slowly，Rotate the cone down，So repeatedly，Gradually expand the tube mouth。
(flaring end of brass tube)9、Bending pipeThe eluator is a special tool for copper pipes.，Structure is shown。The eluvator can process different pipe diameter copper pipes according to the size of the guide wheel and the guide tank.，The eluvator corresponds to the copper tube, and there is also a score of metric and inch.，Its common specifications are6 mm ,8 mm,10mm ,12 mm,16 mm ,19 mm。
(flaring end of brass tube)Instructions：Hold the fixing rod and active rod handle in both hands, respectively，Make the active bar to turn steadily，The copper tube is bent into a needed shape in the guide tank.，The angle of curvature should correspond to the fixed wheel display scale.。Be careful when the elbow。Avoid concave and cracks。To ensure the quality of the elbow，Can also be filled with fine sand in the copper tube，Copper tube is clamped。Bending，Press and hold the copper pipe with your thumb，Bend radius as big as possible，Avoid deformation of crimping due to too small radius，Even rupture。
10、multimeter/Pliers
Multimeter has more，Wide range，Easy to use advantages，It is the most commonly used tool in our refrigeration maintenance。It can be used to measure resistance，ACC voltage and DC voltage。Some multimeters can also measure the main parameters of the transistor and the capacitance of the capacitor, etc.。
(flaring end of brass tube)
The clamp current is combined by the current transformer and current table.。The core of the current transformer can be opened when pinching the wrench；The wire passed by the measured current can pass through the notch of the core open without being cut off.，When the wrench is released, the core is closed.。
11、Portable cylinder
(flaring end of brass tube)Refrigeration copper tube is generally used in maintenance，Generally use low silver phosphorus copper electrodes as solder rather than a general copper strip，Copper tube also requires high quality copper tube。(flaring end of brass tube)
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