Construction method of insulation layer4
Install the computer control box with a horizontal bottom opening as close to the wall as possible. When using an electric drill to drill holes, it is necessary to prevent iron filings from entering the air switch 1 and contactor relay section, causing malfunctions.
For the conduit entering the electrical control box, a wire lock nut should be installed for conduits with a diameter of 32 or less. Medium sized conduit and plastic conduit clamps should be used, with a spacing of no more than 80cm between clamps when turning. The clamps at the front and rear ends of the conduit box should not exceed 25cm, and the piping should be horizontal and vertical.
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If trunking is used for wiring, it is required to have tight joints at a 45 ° angle, and strip holes should be opened on the distribution box. Protective measures should be taken around the holes,
To prevent the thread from being cut.
Cold storage generally does not allow wiring joints. If joints are necessary, waterproof and moisture-proof measures must be taken at the joints. Generally, self-adhesive tape is used for waterproofing, and black tape is used to increase mechanical strength.
The wiring of the control box should be arranged neatly, clean, and the wire ends should be firmly and reliably crimped. The wiring of the unit is correct and reliable to prevent the wires from being worn out and the bolts from breaking the wire skin due to vibration. The valley wheel compressor requires the compressor wiring terminals to be sealed with 704 silicone rubber. All crankcase heaters should be coated with thermal grease, with the solenoid valve outlet facing downwards. The defrosting probe should be tied to the return pipe 5cm away from the fan with fine copper wire, and the temperature probe should be tied to the lower part behind the air cooler, around 30-50cm away from the air cooler. The wiring of the storage light should be tightened, and the wire should not touch the metal shell and should be kept away from the light bulb as much as possible. Prevent the light bulb from burning out the wires. The wiring of the air cooler requires a drip bend for the incoming wire. It is forbidden for the incoming wire to enter the air cooler junction box directly from the top. The wiring of the defrosting heating tube of the air cooler varies from manufacturer to manufacturer, and the way it is connected to the terminal is also different. If there are more than three wires, all defrosting tubes should be connected in a Y-shaped manner. Due to the high defrosting current, special attention should be paid to compressing the wire ends. When the drainage heating wire passes through the air cooler, it is necessary to prevent the heating tube from burning out the heating wire.
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When wiring the door sealed heater, pay attention to distinguishing the voltage of the door sealed heater. As the wiring head is located in the insulation layer, special attention should be paid to the joint, which must be good and reliable to avoid overheating and fire hazards. Usually 36V, the current is around 3A. Wire conduit wiring
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Laying insulated wires in conduit is called conduit wiring. This wiring method is relatively safe and reliable, and can prevent corrosive gases
Body erosion and mechanical damage are generally used in public buildings and industrial plants. There are two types of conduit wiring: exposed wiring and concealed wiring. Mingpei is to lay the conduit on the wall to connect with other exposed areas, requiring it to be arranged horizontally and vertically, neat and beautiful. Concealed installation is the process of burying conduit in walls, floors, or floors in a way that is not visible to others. It does not require horizontal or vertical alignment, but only requires short pipelines and fewer bends.
The operation procedure for conduit wiring is usually to first select the conduit, perform a series of processing on the conduit, then lay the pipeline, and finally thread the wire into the conduit and connect it to various electrical equipment
