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Why Refrigeration Compressor not Work but Operate Normally
In some cases, you would find that the compressor motor starts and runs normally, but it cannot compress the refrigerant.
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1. Introduction A petrochemical plant imported a reciprocating compressor from abroad, the model is: B254-4118N3.3, 4 rows of symmetrical balanced type, the import and export parameters are: 135kPa (A)@14℃, 3.4MPa (A)@35℃, rotation speed: 425r/min, stroke: 240mm.
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07/23/2020
Analysis of common failure causes of hermetic refrigeration compressors
1. How to identify the 3 terminals on the casing of a hermetic compressor?<br></br> The resistance between running terminal (R), starting terminal (S), common terminal (C), RS is greater than the resistance between SC and RC. The resistance between RS is equal to the resistance between SC and the resistance between RC.<br></br>
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02/27/2021
Working principle of servo motor (how servo motor works)
The rotor inside the servo motor is a permanent magnet. The U / V / W three-phase electricity controlled by the driver forms an electromagnetic field. The rotor rotates under the effect of this magnetic field. At the same time, the encoder of the motor feeds back the signal to the driver. The driver adjusts the rotation angle of the rotor according to the comparison between the feedback value and the target value. The accuracy of servo motor depends on the accuracy of encoder (number of lines).
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06/14/2020
Can an inverter air conditioner achieve first-class energy efficiency without an electronic expansion valve
Can an inverter air conditioner achieve first-class energy efficiency without an electronic expansion valve Inverter air-conditioning units do not use electronic expansion valve throttling, their own operational safety will deteriorate, and there is no w 器2 䀀 ᅵ皥 䖒皦즠Ʋ煔क़ 㲈Ʋ 䌁皦 ᮔDž༬皧煞क़Ѐ 呄ᠾ鹨់༹皧 ࠄ 00령ꐱ댁珵뛐珵Љ 䕄ྦ 뤂ᐱ뚜珵 ᴴᏩ呄ᠾ퍘ᒥ 鹨់ᩄ ꋔྦ 瑉浥 巠皱㙲皦抐皱 巠皱 ੨皦柘皱 ᅵ皥 ب 巠皱㙲皦忈皱 ੨皦柘皱 즠Ʋǜ 勁皦즠Ʋب ǜ V / 펔B䌁皦 ᮔDž '鱤džၜ먢䇨珵呈ᠾ뤂ᐱ ⿇⬿먲僧
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The meaning of pipe diameter De, DN, d, ф
The meaning of pipe diameter De, DN, d, ф<br></br> The respective ranges of De, DN, d, ф<br></br> De-- PPR, PE pipe, polypropylene pipe outer diameter<br></br>
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03/09/2022
What’s the Difference between Semi-Hermetic Compressors and Hermetic Compressors?
In the hermetic compressor, the motor and the compressor share the main shaft (reciprocating type)
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Cause Analysis and Treatment Method of Copper Tube Leakage of Evaporator of Single Cooling Unit
Cause Analysis and Treatment Method of Copper Tube Leakage of Evaporator of Single Cooling Unit A central air-conditioning system in a public area uses a screw chiller. During operation, a copper tube in the evaporator leaks due to a malfunction. After further inspection by the technical staff, it was confirmed that the fault was leakage of the copper pipe of the evaporator of the chiller.
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06/14/2020
What to do if the screw chiller compressor is damaged
The compressor is the core component of the chiller. Damage to the compressor is a serious fault that needs to be dealt with in time, otherwise the chiller will not work. Today, the editor will introduce the knowledge and process of handling damaged screw 器2 䀀
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Classification of Water Pump
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