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Electricity safety for using various display coolers in summer
author: supermarket refrigerated showcase category: walk-in display coolers Views: 590Time: 2016-08-22
The display cooler must be reliably grounded. At present, public grounding wires are generally installed in newly-built buildings, or the power supply department has specially designed protection and zero wires. Users of this kind of building only need to plug the three-pin plug of the display cooler power cord directly into the three-pin socket. Old-fashioned buildings generally do not have a ground wire, and you must install the ground wire yourself. For users who live on the first floor, the display cooler can use 40mmX4mm flat steel or 50nunX50mmX4nun angle steel, buried in the ground about lm deep, lead into the room with a grounding wire, and install a three-core socket. If you live in a high-rise building, you can use the metal pipe of tap water as a safety grounding protection. The grounding wire drawn from the water pipe should be fastened to the water pipe with a wiring clip to ensure good conduction. Drain pipes, heating pipes and gas pipes must never be used as grounding wires.
display cooler split wall-mounted air conditioner is often compared to the power of the cabinet, and some use 380V three-phase power supply. The control system of the cabinet has more functions, and two forms of display panel, through cover, liquid crystal display and Wang D light-emitting tube are added to show the operation mode of the air conditioner.
At the same time, there is a more complete protection circuit in the cabinet air conditioner control system. When the current passing through the thermal relay exceeds the specified value, the normally closed contact of FR will trip and the normally open contact will be closed. When the display cooler system pressure is too high, the contact of the high-pressure controller P will also trip. Therefore, as long as any of the above situations occurs, the coil of relay J2 can be energized. The voltage of the eyelashes S line of J2 action is zero, and the air conditioner cannot work normally at this time, and a fault prompt will appear on the display panel. When
cabinet type air conditioner is in heating operation, it also needs display cooler defrosting from time to time to improve the heating effect. To make the air conditioner defrost operation, the following two conditions must be met.
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