Common faults and solutions for atomization pumps?

Atomizer pumps often encounter various failures during use, affecting normal operation. This article, written by PHP editor Banana, collects and sorts out common atomization pump failures and treatment methods to help everyone solve the problem quickly and ensure work efficiency.

1. Common faults and solutions of atomization pumps?

1. The water quality inside the humidifier has deteriorated. 2. The water in the humidifier contains ingredients such as grease, which causes the surface tension of the water to be too high. 3. There is too much scale deposited on the surface of the humidifier transducer. 4. The humidifier atomization transducer has expired and expired. 5. The water level of the humidifier is too high, exceeding the optimal atomization liquid level range.

Solution:

1. Change the water in the container regularly or drop a small amount of edible vinegar (about 0.2 ml of edible vinegar per liter) into the water to destroy the surface tension of the water.

2. Clean the scale on the surface of the atomizer transducer or replace the atomizer transducer.

3. Lower the water surface to the optimal atomization liquid level range.

2. Common faults and solutions for electric flat cars?

An electric flat car is an electric equipment used to move goods, commonly found in warehouses, factories and logistics centers. Electric flat cars may encounter some common faults during use. Here are some faults and their solutions:

1. **Insufficient battery**:

- Check the battery power to ensure that the battery is fully charged.

- If the battery is old, consider replacing it with a new one.

2. **Motor not working**:

- Check whether the motor connection is firm.

- Check if the fuse is blown.

- Check if the motor controller is working properly.

3. **Controller failure**:

- Check whether the power and signal cables of the controller are connected correctly.

- Check if the controller is overheating.

- Try restarting the controller.

4. **Brake Failure**:

- Check the brake system for wear or damage.

- Check whether the brake fluid level is normal.

- Check whether the brake pads or discs need to be replaced.

5. **Tire wear or damage**:

- Check the tires for obvious wear or damage.

- Check whether the tire pressure is normal.

- Replace worn or damaged tires.

6. **Steering system problems**:

- Check whether the steering rod, steering shaft and steering wheel are connected correctly.

- Check the steering hydraulic system for leaks.

- Check whether the steering hydraulic oil level is normal.

7. **Abnormal noise in the car body**:

- Check whether the various parts of the car body are loose or damaged.

- Check the car body for signs of collision.

8. **Electrical System Issues**:

- Check that all electrical connections are tight.

- Check electrical wiring for wear or damage.

When dealing with a fault on an electric flat car, you should first ensure safety and cut off the power supply if necessary. If you are not familiar with the maintenance of electric flat cars, it is recommended to contact a professional repair service or the manufacturer's technical support. Regular maintenance and inspection of electric flat cars can prevent failures and extend the service life of the equipment.

3. Common computer host faults and how to deal with them?

First, the problem of leakage. We often get electric shock when touching the host. This is because during the power supply process, some components form a path with the chassis, causing leakage. A common solution is to first check whether there is a quality problem with the power supply. If there is a problem, quickly replace the power supply with a new one. Secondly, if it is not a quality problem, you can connect a ground wire to complete the discharge work.

Second, there is a serious smell inside the case. Don't take it lightly, be sure to carefully check each component in the chassis. If there is any burnt phenomenon, it is mostly caused by a power supply problem, because too high or too low voltage will cause the components to burn. Use a multimeter to measure the power pins. If there is a problem with the power supply voltage, replace it in time.

Third, it cannot be turned on normally. After booting, only the CPU fan runs. And it often crashes, and the software part has been checked and there is no problem. At this time, it is necessary to check whether there is a problem with the power supply. Similarly, use a multimeter to check whether the voltage and other parameters of its pins are up to standard. If there is a problem, it is best to replace it in time to avoid secondary damage to other components.

Fourthly, pressing the power button will not shut down the device, but selecting the shutdown button in the menu will shut down the device. This is a CMOS setting problem. Just enter the CMOS and select the BIOS option to set it.

Fifth, there is sparking behind the host power supply. During this period of time, this problem always occurred in our computer room, and after inspection, there was no problem with the power supply. Later, after inspection, it turned out to be a problem with the power cord. The quality of the power cord sometimes directly affects the host power supply. The only solution is to buy new ones, and the price is about 10 yuan each.

Sixth, start the fire in the host. It is generally difficult for other components in the host to spark. Most of the reasons occur in the power supply, which is caused by short circuits in the internal components of the power supply. The solution is to send it to a repair shop or replace it with a new one.

Seventh, the fan inside the chassis rotates too loudly. Turn on the host and check. There is basically no sound from the CPU fan and graphics card fan. The sound is undoubtedly coming from the power supply. The solution is to disassemble the power supply and clean the dust on the power supply fan. This problem can basically be solved.

4. Common faults and solutions of palletizers?

1. The limit switch fails, or the limit switch circuit fails.

Use the resistance range of a multimeter to check whether the corresponding limit switch is damaged and the corresponding limit switch circuit. (In this case, if you press the "palletizer forward and backward" toggle switch, the inverter will have no frequency output.)

2. The toggle switch is damaged or the control circuit is cut off.

Check the wiring on the toggle switch or multimeter. (In this case, press the "stacking machine forward and backward" toggle switch, and the inverter will have no frequency output.)

3. The small relay or relay circuit board is damaged.

A small number of relays or relay circuit boards are damaged.

4. Damaged AC contactor or control line interruption.

Check the AC contactor or control wire. (In this case, the converter has frequency output.)

5. The forward and backward motor of the palletizer is damaged, the reduction motor is damaged, or the power is cut off.

5. Common faults and solutions of stud welding machines?

1. Automatic power outage occurs during use.

There are only two reasons for this situation. One is that long-term operation causes power overload operation.

Another situation is that there is a problem with the air switch. You should replace the air switch when using it, and this fault can be solved.

If the welding current cannot be automatically adjusted during use, you first need to check the condition of the control circuit. If it is damaged, it can be replaced. If the controller is damaged, it also needs to be replaced.

2. The chuck is prone to damage

There are many reasons for this situation. The cause of damage is: energy storage type stud welding machine chuck, if the stud and screw become loose during use , then it will definitely cause undesirable conditions. If the pressure continues to increase, damage will easily occur.

3. Why is the energy storage stud welded by the capacitor energy storage stud welder not welded firmly?

First of all, the welding range of the welding machine must be met, and then it can be divided into the following situations:

1. The service life of the machine is too long and the capacitor energy storage is not enough.

2. The design and structure of the new machine are unreasonable, resulting in weak welding.

3. The machine suddenly stopped welding firmly. It may be that the welding gun wire is broken, or a certain connection point is loose, or it is caused by improper operation by the worker.

6. Common faults of oil pumping units and their solutions?

1. Symptoms of fault

When checking the oil pumping unit, periodic clicking sounds can be heard. In severe cases, there will be shiny iron filings on the ground, and even the beam will fall off, that is, the aircraft will turn over.

2. Cause of failure

1) The backstop nut on the crank pin is loose or the cotter pin is not inserted, causing the nut to back off.

2) The contact area between the pin shaft and the pin sleeve is too small, or the dirt in the taper sleeve is not cleaned when the crank pin is installed.

3) The processing quality of the pin shaft and pin bushing is substandard.

4) The cone of the crank pin sleeve has been worn and cannot be used.

3. Solution

1) Reinstall the crank pin, push the previous crank pin out of the stroke hole, and check whether the taper sleeve has been worn.

2) Check the combination of crank pin and taper sleeve.

3) Apply butter in the taper sleeve, insert the crank pin into the taper sleeve and press it tightly, then pull it out to see how much area of ​​the pin is stuck with butter. You can use this to see the bonding area between the pin and the taper sleeve. .

4) The joint area is too small and the crank pin bushing needs to be reinstalled.

7. What are the common troubleshooting methods for computer keyboards?

1. It’s all the fault of foodies

In the hands of foodies, the keyboard often becomes a collection place for food residues. Some larger food residues, such as melon seed shells, and some sticky objects may fall into the gaps between the keyboards. As a result, the keyboard gets stuck after being pressed and cannot rebound normally. The keys need to be pulled out to reset.

Solution:

This kind of stuck key is also very simple to deal with. After pulling off the keycap and cleaning up the debris at the bottom of the keyboard, the problem can be solved.

2. Unavoidable aging

For mechanical keyboards, aging keys are mainly caused by two reasons. One is that the springs inside the mechanical keyboard are corroded, which leads to a reduction in elasticity. This is true in the south, especially in areas with high air humidity. is a frequently encountered problem. After three to five years of use, mechanical keyboards are prone to key jams caused by spring corrosion.

Secondly, there is the problem of friction and aging between the keyboard cover and the axis core. During the use of a mechanical keyboard, there will be wear and aging between the key cover and the axis core. When the wear and tear reaches a certain level, the friction will increase. In this way, the spring cannot pop out the shaft core smoothly, causing the key to jam.

Solution:

If the above-mentioned aging key jamming problem only exists in a few keys, you can solve it by replacing the spring, adding lubricant to the shaft core, or even replacing the keys.

3. Liquid corrosion is the culprit

The keyboard only responds occasionally when you tap the keyboard continuously, and this phenomenon tends to become more and more serious. In the early stage, the keys occasionally fail, and in the later stage, the keys only occasionally work or even completely fail. .

When mechanical keyboards have this problem, it is mostly caused by water intrusion: in terms of waterproofing, mechanical keyboards are naturally weak, the keys are not sealed, and mid- to low-end products rarely have waterproof structures. In this case, a glass of water may kill the keyboard. , and cola, coffee, and juice containing sugar and phosphate ingredients are even more powerful.

Solution:

For buttons that are not too severely corroded, you only need to spray a rust-removing lubricant like Philips Water on the disassembled buttons to solve the problem. If the rust is severe, the key body needs to be replaced.

4. Welding and desoldering: common problems of low-cost mechanical keyboards

Nowadays, the workmanship of some low-priced mechanical keyboards is not excellent. They not only use unknown domestic shafts, but also have no bottom iron plate and the circuit board is relatively thin. , even the welding process is not too good.

Solution:

Such a problem is not difficult to solve. Just carefully observe the solder joints under the unresponsive button to see if there is desoldering and repair the soldering. If the copper foil of the circuit board is cracked , which is more troublesome to observe.

However, in this case, most of the problems occur when several keys are unresponsive at the same time. As long as you find the common copper foil of these keys and use a multimeter, you can quickly find the breaking point of the copper foil, and then use a Simply connect the solder joints with a jumper to solve the problem.

8. What are the common valve failures and their solutions?

1. Valve body leakage:

Cause:

1. The valve body has blisters or cracks;

2. The valve body is cracked during repair welding

Treatment:

1. Polish the suspected cracks, Use 4% nitric acid solution to etch and reveal any cracks;

2. Excavate and repair the cracks.

2. The valve stem and its matching nut thread are damaged or the valve stem head is broken or the valve stem is bent:

Reasons:

1. Improper operation, excessive force on the switch, failure of the limit device, and failure of the over-torque protection . ;

2. The thread fit is too loose or too tight;

3. Too many operations and the service life is too long

Treatment:

1. Improve the operation and do not use too much force; check the limit device and check the excessive torque Protection device;

2. Choose appropriate materials and assembly tolerances meet the requirements;

3. Replace spare parts

3. Leakage on the valve cover joint surface: Reason:

1. The bolt tightening force is not enough or the tightening force is biased;

2. The gasket does not meet the requirements or the gasket is damaged;

3. The joint surface is defective

Treatment:

1. Retighten the bolts or make the door cover flange gap consistent;

2. Replace the gasket;

3. Disassemble and repair the sealing surface of the door cover

4. Internal leakage of the valve:

Reasons:

1. Loose closing;

2. Damage to the joint surface;

3. The gap between the valve core and the valve stem is too large, causing the valve to The core is sagging or has poor contact;

4. The sealing material is poor or the valve core is stuck.

Treatment:

1. Improve the operation, reopen or close;

2. Disassemble the valve, and re-grind the sealing surface of the valve core and valve seat;

3. Adjust the gap between the valve core and the valve stem or replace the valve disc;

4. Disassemble the valve to eliminate jamming;

5. Replace or overlay the sealing ring

5. The valve core and valve stem are separated, causing switch failure:

Reason:

1. Improper repair;

2 . The joint between the valve core and the valve stem is corroded;

3. The switch is forced too hard, causing the joint between the valve core and the valve stem to be damaged;

4. The valve core stop gasket is loose and the connection part is worn

Treatment :

1. Pay attention to inspections during maintenance;

2. Replace the door rod with corrosion-resistant material;

3. Do not open or close the valve forcefully, or continue to open the valve after fully opening it;

4. Check and replace damaged spare parts

6. Cracks in the valve core and valve seat:

Reasons:

1. Poor quality of surfacing on the joint surface;

2. Large temperature difference on both sides of the valve Treatment:

Repair welding of the cracked area according to regulations Heat treated, polished and ground.

7. The valve stem does not lift or switch properly:

Reasons:

1. It is closed too tightly when it is cold and swells when heated or too tight after it is fully opened;

2. The packing is pressed too tightly;

3. The valve stem gap is too small and swells to death;

4. The valve stem and the nut are too tight, or the mating thread is damaged;

5. The packing gland is biased;

6. The door stem is bent;

7. The medium temperature is too high, the lubrication is poor, and the valve stem is severely rusted.

Treatment:

1. After heating the valve body, slowly try to open it or open it fully and tighten it and then close it slightly;

2. Slightly loosen the packing. Test open after gland;

3. Increase the valve stem gap appropriately;

4. Replace the valve stem and nut;

5. Readjust the packing gland bolts;

6. Straighten the door stem or replace it ;

7. The door pole uses pure graphite powder as lubricant

8. Packing leakage:

Reason:

1. The packing material is wrong;

2. The packing gland is not pressed tightly or is biased;

3 .The method of adding packing is wrong;

4. Damage to the valve stem surface

Treatment:

1. Select the packing correctly;

2. Check and adjust the packing gland to prevent pressure deviation;

3. Press the correct button Method: add packing;

4. Repair or replace the valve stem

Article reference: Eight common valve faults and treatment methods - China Valve Enterprise Style Platform

9. Common faults and solutions for electronic scales?

Common electronic scale failures and solutions.

1. The electronic scale has no display: whether the battery in the machine is under-voltage and causes automatic shutdown (models with built-in batteries) whether the AC power supply voltage is consistent with the voltage marked on the product and whether the fuse is blown (for models using AC motors).

2. Unable to charge: Whether the AC power supply voltage is consistent with the voltage marked on the product and whether the fuse is blown (using AC motor type). /

3. Digital beating: Whether the sensor connection is good, whether the sensor and display are damp, whether the sensing value setting is too small, whether the AD conversion rate is set too high, whether there is interference from vibration, wind, etc., whether the scale platform is touched foreign body.

4. Poor linearity: Whether the sensor protection device is working, whether it has been linearly corrected (there are linear correction models), whether the weights used for linear correction are correct (there are linear correction models), whether the sensor is overloaded.

5. The electronic scale cannot print: whether the printer type is set correctly, whether the reading is stable, whether the stable mark is on, whether the printer cable is plugged in, whether the printer power is on, and whether the printer is online (only 24-pin printers).

6. Unable to accumulate: whether it returns to zero position before accumulation and whether it is stable when pressing the accumulation key.

7. Unable to communicate through the serial port: whether the baud rate and sending method settings are correct, whether the RS-232C connection is in good contact, and whether the RS-232C connection is too long.

8. It does not return to zero when it is turned on: whether the automatic zeroing range is set too small or whether there are items on the scale platform.

9. Manual zeroing is invalid: whether the manual zeroing range is set too small and whether the current reading is stable.

10. The electronic scale cannot weigh: whether the sensor connection is firm and whether it has been calibrated (models with linear correction must be linearly corrected first).

11. Whether to enter with the super user password (software protection model), and whether the short circuit correction jumper (lead seal protection model) is used.

12. It does not return to zero after uninstalling: whether the zero tracking setting is too small, and whether the electronic scale platform touches foreign objects.

13. The backlight is invalid: whether the battery is insufficient and whether the current weight is less than the minimum weighing capacity. /

14. Checkweighing is invalid: whether the current weight is less than the minimum weighing capacity and whether the checkweighing tweet is turned on.

15. Power-on beep: whether it has been calibrated, whether the sensor connection is intact, and whether a check-weighing setting has been set.

Electronic scale fault solution

Fault 1: Why can’t the electronic scale charge or the charging indicator light does not measure or respond?

Fault analysis:

Please first confirm whether the 110V/220V voltage switch of the electronic scale is adjusted to Use the same voltage as the power supply and make sure the charging cable is firmly plugged into the charging base on the scale.

Check whether the charging cable is broken due to external factors.

Check whether the fuse is defective.

The battery is defective.

It is the fourth reason or factors other than those mentioned above. It is recommended to send it back to the manufacturer for processing.

Fault 2: Why does the electronic scale do nothing after it is turned on?

Fault analysis:

If you use dry (storage) batteries, please first confirm whether the voltage of the dry (storage) batteries is sufficient? If the voltage is insufficient, please replace the dry (storage) batteries Please charge).

Those who use ADAPTOR, unplug the ADAPTOR output connected to the electronic scale, and then install the dry battery. If it can be turned on, the ADAPTOR is damaged, please replace it.

Is the fuse of the electronic scale defective?

The switch or button may be damaged.

Maybe the electronic component is faulty.

For reasons 4 and 5 or reasons other than those mentioned above, it is recommended to send it back to the manufacturer for processing.

Fault 3: Why can’t the electronic scale weigh or the weight is inaccurate?

Fault analysis:

Check whether the transportation protection device has been removed.

Please follow the calibration steps in the operation manual to recalibrate.

If it is not due to the above reasons, it is recommended to send it back to the manufacturer for processing.

Fault 4: Why does the electronic scale button automatically trigger when there is no action or abnormal action?

Fault analysis:

The button is defective.

The button socket is defective.

For the above reasons, it is recommended to send it back to the manufacturer for processing.

Fault 5: Why does the electronic scale screen display abnormally?

Fault analysis:

If there are hyphenations in a single font, it may be due to poor LCD contact or failure.

If the display is unclear or cannot be displayed, it may be due to an electronic component failure.

For the above reasons, it is recommended to send it back to the manufacturer for processing.

Fault 6: Why can’t the electronic scale backlight?

Fault analysis:

Is the backlight function of the internal program of the electronic scale not set? (Please refer to the operation manual for setting)

There is a backlight function, and the weighing object needs to be placed on the weighing pan (it can light up when the sensitivity is more than 9 times).

Maybe the electronic component is faulty.

If it is the 3rd reason or other than the above reasons, it is recommended to send it back to the manufacturer for processing.

Fault 7. Why does the Err message appear on the electronic scale screen?

Fault analysis:

Is the internal program setting of the electronic scale normal (refer to the operation manual).

The electronic scale protection screw has not been removed (refer to the operation manual).

If it is not due to the above reasons, it is recommended to send it back to the manufacturer for processing.

Fault 8. Why does the -Err message appear on the electronic scale screen?

Fault analysis:

Is the scale pan not placed on the electronic scale?

May be affected by inappropriate external forces.

If it is the second reason or other than the above reasons, it is recommended to send it back to the manufacturer for processing.

Fault 9. Why does the electronic scale have a battery symbol?

Fault analysis:

Please use the power cord to charge the scale immediately.

The battery or electronic component may be faulty.

If it is the second reason or other than the above reasons, it is recommended to send it back to the manufacturer for processing.

Fault 10. Why is the zero point of the electronic scale inaccurate?

Fault analysis:

Is the air flow in the place unstable or facing an open window and not placed in a stable area...etc. (please refer to the operation manual).

Whether there are any electromagnetic interference items in the place.

Whether the electronic scale was hit or fell.

If it is the 3rd reason or other than the above reasons, it is recommended to send it back to the manufacturer for processing.

Fault 11. Why can’t the electronic scale be fully loaded?

Fault analysis:

The electronic scale protection screw has not been removed.

Whether there is foreign matter penetrating into the electronic scale, causing interference or impact or fall.

Whether the internal program settings of the electronic scale are correct (refer to the operation manual).

If it is the second reason or other than the above reasons, it is recommended to send it back to the manufacturer for processing.

Compiled and provided by Shanghai Yajin Electronic Technology Co., Ltd.! You can refer to the article: Complete Illustrations of Electronic Scale Maintenance. Ten common fault repair methods for electronic scales.

10. Emerson ups common fault causes and solutions?

Most brands of UPS power supplies are the same, not limited to the Emerson UPS brand. The general faults are as follows:

1. If the fault indicator light is on, follow the direction indicated by the fault light to check the fault

　

　1) If the "AC input abnormality" fault light is on, it means that AC input overcurrent has occurred and the fuse in the input power switch has been blown. At this time, you should focus on checking the cause of the AC input overcurrent;

　　

2) If the "DC input abnormality" fault light is on, it means that DC input overcurrent or DC input undervoltage has occurred. At this time, you should check whether the fuse in the DC input switch MCB51 has been blown; check whether the DC undervoltage relay 80 (80 is the code name of the DC medium voltage relay) has acted.

　

　3) If the "Output Voltage Abnormal" fault light is on, it means that AC output overvoltage has occurred.

　

　4) If the "output overcurrent" fault light lights up, it means an overload has occurred, check the load.

　　

　5) If the "fuse blown" fault light is on, you should check whether the following fuses are blown: ① The fuse in the input power switch MCB52 of the auxiliary power supply AX-S3; ② The fuse in the auxiliary power supply Ax-S1 Fuse F13 in the input circuit; ② fuses EF1-EF3 in the DC filter circuit (alarm fuses f21-f23 can be checked), ④ fuse f2 in the input circuit of the inverter cooling fan FM2 (cooling fan FM2 stops rotating ); ⑤ fuse f101 or f201 in the control circuit; ⑥ fast fuse (F1) in the main circuit of the inverter.

　

　 2. If no fault light is on, check whether the thyristor is good and whether the trigger pulse suddenly disappears.

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