In fact, we all know that the long-term maintenance of product features and appearance depends on daily maintenance. The correct method can extend the effective life of hardware products. Let us pay attention to the hardware products in our homes. If we take care of them, we will have unexpected effects.

Hardware is the soul of the entire inner door, including handles, locks, hinges, etc. They are small and important. The key to the service life of the inner door is the maintenance of the hardware.

Stainless steel handles and stainless steel hardware can be wiped with a brightener to add shine.

Moving parts such as hinges, hanging wheels, and casters may degrade performance due to the adhesion of dust during long-term exercise. One or two drops of lubricant can be kept smooth every six months or so.

When the lock cylinder is not flexible enough, a small amount of black powder can be scraped from the pencil lead and lightly blown into the lock hole. This is because the graphite component is a good solid lubricant. Never drop in the oil as it will make it easier to stick to the dust.

Pay special attention to the direction of the rotation of the handle and avoid the dead force. In particular, educate children not to hang on the door handle to sway, which is both dangerous and may cause damage to the inner door.

During the busy season, what kind of necessary maintenance should be done for the submersible pump that has been resting for one winter? In order to ensure normal use, do not drop the chain during irrigation, let Tianbo pump industry develop a professional maintenance manual for your submersible pump:

1. Check the wearing parts: the impeller, buckle, bushing, bearing seat, etc. of the submersible pump are wearing parts. First, the pump part should be removed to check whether the wearing parts are intact. Damaged and unqualified parts are strictly prohibited.

2. Replace the lubricating oil: open the oil hole screw inside the sealing chamber and the motor respectively, and release all the lubricating oil inside the sealed chamber and the motor, and replace the new oil to ensure the normal operation of the lubrication system.

3. Remove the pump casing against rust: Before the spring use, the uppermost pump casing should be disassembled, and then the impeller should be turned and then closed to prevent the rust of the components from starting normally and burning the motor. This maintenance is especially important for water-filled motors.

4. Ensure sealing: The requirements for sealing of agricultural submersible pumps are very strict. If oil is found to be turbid and the water content is high when replacing the lubricating oil in the sealed chamber, the sealing box or sealing ring must be replaced or replaced to ensure the sealing. Good performance.

5. Drying motor: Measure the insulation resistance of the winding and the outer casing of the submersible pump with a 500 megohm meter. If the resistance is less than 0.5 megohm, the motor moisture should be removed. The drying methods include an external drying method, a current drying method, and a combined drying method in which both are performed simultaneously. The external drying method is to use an external heat source for treatment. Commonly used measures are: (1) blowing hot air: a blower using an electric heater (a small submersible pump for agriculture can use a hair dryer) to blow hot air for drying purposes; (2) bulb baking: In a closed box, several 200 watt bulbs are used for baking. Note that the baking temperature should not be too high, should be controlled below 125 °C; (3) current drying: the three-phase winding of the motor can be connected in series or parallel according to the impedance of the submersible pump and the size of the power supply, and then a variable resistor is connected to adjust the current amount. It is about 60% of the rated current value and is energized and dried.

6. Ensure bearing lubrication: For the water-filled submersible pump, check the skeleton oil seal and lithium-based grease for the upper and lower end cap bearing chambers. To ensure that the bearing works in a well-lubricated state for a long time.

7. Check the bearing: Check the upper and lower bearings of the motor part. If it is found that the wear or the clearance is too large, it is necessary to replace the new bearing in time. It is strictly forbidden to use the disease. The inspection method is as follows: If the motor is running, a “beep” sound is generated, and the cycle is proportional to the rotational speed, and it is laborious to rotate the rotor by hand, which is a bit squat or avulsion on the bearing race; if the bearing is intermittent The "beep" sound, there is an indeterminate dead point when turning the rotor by hand, usually the ball frame is damaged, the inner ring is broken or the ball is broken. In the above situation, the bearing must be replaced to avoid further damage.

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Label: maintenance hardware

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