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What are the reasons for the uncooling of display cases? What display cases are good?
Some customers will encounter such a situation. After the display cases are used for a long time, there will be leakage and uncooling problems. How to solve these problems? Next, refrigerated showcase commercial refrigeration will explain in detail the leakage problem of display cases.
display cases Leakage is mostly due to the long service time of Jiangxi display cases, which leads to aging or damage of parts, and the condensation in Jiangxi display cases forms a loop. In addition, display cases are caused by vibration during transportation. Leakage may also be caused by collisions, damage to the wire insulation, etc.
One, the thermostat leakage
when the temperature controller is in normal operation and the compressor is in contact with the temperature controller, the leakage of electricity occurs when the temperature controller is in normal operation. Since the thermostats of most display cases are installed on the inner wall, temperature changes in the cabinet will cause condensation around the thermostat. When the condensed water flows into the thermostat, the resistance between the electrical contacts of the thermostat and the cabinet decreases and the cabinet becomes charged. We can eliminate these problems by defrosting regularly, often erasing the accumulated water in the display cases, and preventing the condensed water from flowing into the thermostat. At the same time, pay attention to frequently cleaning the bakelite frame of the thermostat and the surrounding dirt, because the dirt will also cause leakage after absorbing moisture.
Of course, we still need to maintain the single-outlet display cases frequently, so that there are fewer such problems and you can get the best benefits.
2. Moisture-proof wire leakage
When the moisture-proof wire is frequently connected to the power supply, the inductance of the compressor can not be switched on for a long time, and the power supply of the compressor can not be used for a long time. More common in display cases. At this point, we can use insulating sleeves to cover the moisture-proof wire. It is best to remove the old wire and replace it with a new rubber insulated wire.
Three, compressor leakage
Compressor leakage faults are generally caused by display cases that have been used for a long time, which makes the insulation layer of the motor windings aging and peeling off, resulting in leakage.
Check whether the winding lead insulation layer is damaged, causing the steel wire to be exposed and contact with the casing to cause leakage. If the above phenomenon exists, the damaged area can be wrapped with polyester film to avoid direct friction with the case. If it is found that the insulation layer of the enameled wire has fallen off, it should be removed and repainted or the motor should be replaced.
4. Inductive leakage
After the cabinet is started, if there is numbness in the cabinet and the electrical control parts are normal when the cabinet is touched with the hand, it means that there is numbness and electric control. The reason for this is generally that the control circuit of the compressor of the display cases and the internal lighting circuit of the display cases pass between the cabinet shell and the inner wall. If the wire insulation is aging, the display cases have no reliable grounding wire, and when the hand touches the cabinet When, it will produce hemp inductance. If the neon bulb is checked with a test pen to be bright, it indicates that the Nanchang display cases have serious induced leakage.
The above articles are from refrigerated showcase commercial refrigeration and display cases. For details, please log in: www.ihdjx.com
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