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Emissions of supermarket refrigerated showcase refrigeration system (3)

supermarket refrigerated showcase Emissions of refrigeration system (3) Lubricant emission In supermarket refrigerated showcase systems that use ammonia as a refrigerant, ammonia is often discharged because ammonia is often insoluble lubricating oil. Using the principle that ammonia is lighter than lubricating oil, the oil in the system is discharged through the special oil drain device und...

display refrigeratorTIME：2016-08-22
Supermarket refrigerated showcase refrigeration system discharge (four)

supermarket refrigerated showcase refrigeration system discharge (four) oil discharge operation, in the design of ammonia refrigeration system, oil separator, accumulator, evaporator, condenser, intercooler , Low-pressure circulation barrel, ammonia liquid separator, etc., all have oil drain pipes connected with the oil inlet of the oil collector. When draining the ammonia oil separator, the s...

display freezerTIME：2016-08-22
display cooler electrical system components disassembly, diagnosis and maintenance (four)

display cooler electrical system components disassembly, diagnosis and maintenance (four) (2) installation method of dual temperature dual control thermostat, install the thermostat to temperature In the control box, insert each color line in the original position, and then proceed in four steps: ①Plug the two main connecting rods into the temperature control adjustment button, and fix the d...

display freezerTIME：2016-08-22
Disassembly, diagnosis and repair of starter and protector in supermarket refrigerated showcase

Disassembly, diagnosis and repair of starter and protector in supermarket refrigerated showcase The starter and protector are connected to the compressor terminal and are located in the compressor accessory box of supermarket refrigerated showcase . Before disassembling, pry open the accessory box fixing clip, remove the accessory box before disassembling, and unplug the refrigerator before di...

display freezerTIME：2016-08-22
Commercial refrigeration starter and protector disassembly, diagnosis and maintenance (2)

The click sound emitted by the overload protector intermittently. Due to the damage of the starter, the start winding circuit of the commercial refrigeration compressor will fail. It can be connected, without starting current, no rotating magnetic field is formed, and the compressor does not operate; the working current of the same-operating winding circuit is very large (about 10A), the res...

commercial refrigerationTIME：2016-08-22
Supermarket refrigerated showcase refrigeration system air release operation method

supermarket refrigerated showcase refrigeration system air release operation method Possibility of air entering the system (1) The refrigeration system was not completely cleared of air before it was put into production or after the overhaul. Pass), so the air exists in the supermarket refrigerated showcase refrigeration system. (2) During routine maintenance, local pipelines and equipment...

walk-in display coolersTIME：2016-08-22
Display cases The inspection method for the presence of air in the system

display cases The inspection method for the presence of air in the system (1) The pointer of the refrigerator exhaust pressure gauge swings. The swing of the pressure gauge pointer is not only caused by the air in the display cases system, but sometimes the uneven displacement can also cause the pressure gauge pointer to swing. Therefore, it should be distinguished. If the displacement is not ...

commercial refrigerationTIME：2016-08-22
Ammonia supermarket refrigerated showcase refrigeration system air release program

ammonia supermarket refrigerated showcase refrigeration system air release program (1) First Open the mixed gas inlet valve to let the mixture of non-condensable gas and ammonia in the supermarket refrigerated showcase condenser enter the air separator (before opening the mixed gas inlet valve, the air separator is in a standby state), and then close the mixed gas inlet valve when it does ...

display freezerTIME：2016-08-22
Supermarket refrigerated showcase Solenoid valve disassembly, diagnosis and maintenance

Supermarket refrigerated showcase Solenoid valve disassembly, diagnosis and maintenance Two-way solenoid valve is a dual-purpose part of electrical and refrigeration systems. Only dual-temperature dual-control or multi-temperature multi-control supermarket refrigerated showcase is equipped with this kind of device, and the valve core position is controlled by the refrigeration thermostat conta...

walk-in display coolersTIME：2016-08-22
display cooler solenoid valve disassembly, diagnosis and maintenance (2)

display cooler solenoid valve disassembly, diagnosis and maintenance (2) solenoid valve diagnosis and maintenance failure rate is extremely low, two-way solenoid valve does not change direction, generally not its own cause, The refrigeration thermostat that controls whether the display cooler is energized or not has problems. Monostable Solenoid Valve Diagnosis (1) Normally, when the solen...

commercial refrigerationTIME：2016-08-22

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