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Supermarket refrigerated showcase compressor disassembly, diagnosis and repair (2)

supermarket refrigerated showcase compressor disassembly, diagnosis and repair (2) compressor fault diagnosis and repair compressor is a high-priced component in supermarket refrigerated showcase The new compressor is 150-500 yuan, and the old compressor is about 50 yuan if it is disassembled). Although it can be repaired and some experience is good, because there are no compressor accessori...

walk-in display coolersTIME：2016-08-22
display cases Compressor disassembly, diagnosis and maintenance (3)

display cases Compressor disassembly, diagnosis and maintenance (3) The resistance between the terminal and the housing is greater than 2MQ. The resistance value of the running winding of the rotary compressor is generally 20Q-35Q, and the starting winding is 40Q-100Q. , The starting winding is 40Q~lOOQ. The start winding is 40Q～100Q. If there is infinity between any two terminals, the winding...

commercial refrigerationTIME：2016-08-22
Commercial refrigeration The influence of the refrigeration compressor

The influence of the commercial refrigeration The influence of the refrigeration compressor Commercial refrigeration The operation of the piston refrigeration compressor When the compressor starts, it changes from the original static state to the motion state. If starting with load, the required current is more than 5 times larger than during normal operation, and the motor and electrical equi...

display refrigeratorTIME：2016-08-22
The influence of walk-in cooler refrigeration compressor (2)

The influence of walk-in cooler refrigeration compressor (2) (2) Check the compressor. ① Check that there are no obstacles in the compressor and motor operating parts, and turn the pulley or coupling for 2 to 3 revolutions to see if all walk-in cooler control equipment protection devices are in good condition. ② Observe the crankcase pressure. If it exceeds 0.2MPa, lower the pressure first...

display freezerTIME：2016-08-22
Supermarket refrigerated showcase The impact of refrigeration compressors (3)

Supermarket refrigerated showcase The impact of refrigeration compressors (3) (5) If the ammonia pump is used for liquid supply, check that there are no obstacles at all operating parts of the ammonia pump. (6) Start the cooling water pump to supply water to the condenser, compressor water jacket and crankcase cooling water pipe. (7) When the supply voltage is not less than 10% of the rate...

commercial refrigerationTIME：2016-08-22
It will cause the compressor valve to be deformed or misplaced and damage the compressor. Therefore, it is only used when there is no way. In case of poor cooling effect or non-stop failure, use other methods to check that the compressor has no obvious ab

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commercial refrigerationTIME：2016-08-22
Commercial refrigeration compressor disassembly, diagnosis and maintenance (5)

commercial refrigeration compressor disassembly, diagnosis and maintenance (5) compressor vibration decoupling diagnosis, vibration decoupling is only seen in reciprocating compressors, mostly caused by It is caused by the compressor upside down or the tilt angle is too large. The performance in commercial refrigeration is that the refrigeration is normal, but the compressor is running with a ...

display freezerTIME：2016-08-22
Commercial refrigeration stop function of refrigeration device

commercial refrigeration stop function of refrigeration device normal stop (1) Close the expansion valve or the main liquid supply valve to reduce the pressure of the evaporator for the next start. If the commercial refrigeration is a Freon system, the liquid reservoir or condenser outlet valve should be closed. (2) Close the suction valve. When the pressure of the crankcase gauge drops to...

display refrigeratorTIME：2016-08-22
The parking function of supermarket refrigerated showcase (2)

supermarket refrigerated showcase The parking function of refrigeration equipment (2) accident parking accident parking accident parking is a supermarket refrigerated showcase refrigeration equipment is in the process of malfunctioning or due to an unexpected external environment When the impact will pose a serious threat to the refrigeration system, the emergency measures taken may sometime...

walk-in display coolersTIME：2016-08-22
The parking function of walk-in cooler refrigeration device (3)

The parking function of walk-in cooler refrigeration device (3) In the following situations, the walk-in cooler parking process should be performed. ①The oil pressure is too low or does not rise. ②When the oil temperature has exceeded the allowable value. ③Severe refrigerant leakage at the shaft seal. There is a knocking sound in the cylinder. ⑤ More severe wet compression. ⑥Exhaus...

display refrigeratorTIME：2016-08-22

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