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display cooler disassembly, diagnosis and repair of low temperature compensation switch
author: supermarket refrigerated showcase category: commercial refrigeration Views: 494Time: 2016-08-22
display cooler disassembly, diagnosis and repair of low temperature compensation switch
(For power saving or winter) switch fixing screws, remove the switch. Installation is the reverse process of disassembly.
(2) The low temperature compensation switch has a very low diagnosis and handling failure rate, and the damage modes are normally on and normally off. The resistance can be verified by measuring its resistance. When it is normal, toggle the switch and the resistance between the two pins should have two states: on, off, . If there is only one state, it is judged that the switch is damaged and should be replaced with the same specification switch.
Thermostat heating wire removal method Open the thermostat box, directly remove it, and make insulation treatment, namely, the fourth. Disassembly, diagnosis and maintenance of lighting devices
Door light switch disassembly, diagnosis and maintenance
(1) Switch disassembly and assembly The fixed position of the door light switch is different, and the disassembly and assembly methods are different. Unplug the power plug of the display cooler before disassembly. The switch is installed in the electrical box, usually a card slot installation. The light switch is installed in the electrical box, usually a card slot installation. When disassembling and assembling, find a good position first, and pay attention to safety, and do not pry the device. The door light switch is fixed on the door frame and opened directly with a flat-head screwdriver. The door light switch is fixed in the decorative box on the top of the display cooler body with a plastic clip, and can be opened directly with a screwdriver in summer and autumn. But pay attention to the feel, and continue if there is a possibility of prying open: otherwise, stop immediately and use it for disassembly. The method of disassembling the door light switch on the top of the display cooler body is not suitable for direct prying because the plastic at the fixed part of the door light switch is relatively brittle in winter. You should pry open the indicator light assembly on the top of the display cooler body, the decorative strip, unscrew the fixing screws of the decorative box, open the decorative box, and remove the door light switch. Installation is the reverse process of disassembly. Before installation, pull out the two secondary connecting rods of the thermostat, insert them into the main connecting rod, and install the decorative box.
(2) The door light switch diagnosis and maintenance button is not flexible, which reflects the jamming or high resistance when closing the refrigerator door. Apply petroleum jelly to the door light switch button, and then press it several times. The door light switch is not in good contact. Measure whether the resistance at both ends is normal. When it is normal, the action of the button should be able to switch on and off. Otherwise, check whether it is damaged. If it is damaged, switch to the same specification switch.
Door lamp disassembly, diagnosis and maintenance The door lamp is fixed in the lampshade, mostly small bulbs, with screw buckle and snap buckle. Most of the damage is the broken tungsten wire inside, which can be seen directly.
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