Here are the methods for maintaining and troubleshooting an automatic sliding door opener:

Maintenance

Regular Cleaning

Clean the exterior of the door opener with a soft, damp cloth to remove dust and dirt. Pay attention to the track and sensor areas, as any debris accumulated there can affect the door's operation.

Vacuum the track regularly to remove small particles and debris that could cause friction or jamming.

Lubrication

Lubricate the moving parts of the door opener, such as the rollers, hinges, and tracks, with a suitable lubricant. This helps to reduce friction and ensures smooth operation. Use a silicone - based lubricant for better results, and apply it according to the manufacturer's instructions.

Check and Tighten Fasteners

Periodically check all the screws, bolts, and nuts on the door opener and its associated components. Over time, vibrations can cause these fasteners to become loose. Tighten any loose fasteners to prevent components from becoming misaligned or falling off.

Battery or Power Supply Check

If the door opener is battery - powered, check the battery level regularly and replace the batteries when necessary. For AC - powered openers, ensure that the power cord is in good condition and that the outlet is working properly.

Sensor Calibration

The sensors on the automatic sliding door opener need to be calibrated regularly to ensure accurate detection. Refer to the manufacturer's instructions for the specific calibration process. Usually, this involves adjusting the sensitivity and range of the sensors.

Troubleshooting

Door Not Opening or Closing

Check if the power supply is working. Ensure that the door opener is plugged in and that there is no power outage. If it's battery - powered, replace the batteries if they are low.

Inspect the sensors to see if they are blocked or dirty. Clean the sensors and make sure there are no objects or obstructions in their detection range.

Check the track for any debris or damage. Remove any obstacles and repair or replace the track if it is damaged.

Test the control panel to see if the buttons are working properly. If the buttons are unresponsive, the control panel may need to be repaired or replaced.

Door Opens or Closes Slowly

Lubricate the moving parts as described in the maintenance section. Friction in the rollers, hinges, or tracks can cause the door to move slowly.

Check the power supply. If the voltage is low, it can affect the motor's performance. Contact an electrician to check the power supply if needed.

Inspect the motor. If the motor is overheating or making unusual noises, it may be malfunctioning and require repair or replacement.

Door Closes Partially or Stops Mid - Way

Check the sensors for proper alignment and functionality. A misaligned or faulty sensor can cause the door to stop prematurely.

Look for any obstructions in the door's path. Even a small object can trigger the safety sensors and cause the door to stop.

Examine the track for any irregularities or damage that could be causing the door to get stuck.

Door Makes Unusual Noises

Tighten any loose components. Loose screws, bolts, or parts can vibrate and make noise when the door moves.

Lubricate the moving parts. Dry or worn - out parts can produce squeaking or grinding noises.

Check the motor and gearbox. Unusual noises may indicate problems with these components, such as a worn - out gear or a faulty motor bearing.

If the above troubleshooting methods do not solve the problem, it is recommended to contact a professional technician at sales@s4a-access.com or the S4A 's customer service for further assistance.

Author: Written by Ms.Anna Zhang from S4A INDUSTRIAL CO., LIMITED

There are several reasons why your automatic sliding door may not be closing completely:

Obstructions:

Physical Obstacles: Check if there are any objects blocking the door's path. Even small items like leaves, debris, or a misplaced doormat can prevent the door from closing fully. Inspect the entire length of the track and the area around the door frame.

https://www.s4a-access.com/automatic-door-opener_c90

Sensor Blockage: The sensors that detect the door's movement and its surroundings could be blocked or covered. Dirt, dust, or even a sticker accidentally placed on the sensor can interfere with its operation. Wipe the sensors clean and make sure there are no objects within their detection range that could be causing a false signal.

Track Issues:

Damage or Misalignment: Examine the track for any signs of damage, such as dents, bends, or rust. A damaged track can cause the door to get stuck or not move smoothly. Additionally, check if the track is properly aligned. Over time, the track may shift due to vibrations or other factors, affecting the door's movement.

Lack of Lubrication: The rollers on the door that move along the track may become dry or dirty, causing increased friction. This can make it difficult for the door to close completely. Lubricate the rollers and the track with a suitable lubricant, such as silicone - based spray, to reduce friction.

Motor or Mechanical Problems:

Motor Malfunction: The motor that powers the door's movement may be experiencing issues. It could be overheating, have a faulty winding, or be experiencing a power supply problem. If the motor is making unusual noises or seems to be working intermittently, it may need to be repaired or replaced.

Belt or Chain Issues: In some automatic sliding door systems, a belt or chain is used to drive the door. If this belt or chain becomes loose, worn, or damaged, it can affect the door's closing mechanism. Check the tension and condition of the belt or chain and adjust or replace it as necessary.

Sensor Calibration or Settings:

Incorrect Calibration: The sensors may be misaligned or miscalibrated. This can cause the door to stop closing prematurely, as the sensors may think there is an obstruction when there isn't. Refer to the manufacturer's instructions to recalibrate the sensors.

Faulty Sensor: A defective sensor can also lead to improper door operation. If the sensor is not functioning properly, it may send incorrect signals to the door controller. Test the sensor's functionality using a multimeter or other appropriate testing tools, and replace the sensor if it is found to be faulty.

Control System Issues:

Programming Errors: The control system that governs the door's operation may have incorrect programming. This could be due to a software glitch or incorrect settings. Try resetting the control system to its default settings and reprogramming it according to the manufacturer's instructions.

Electrical Problems: Check for any loose wires, corroded connections, or other electrical issues in the control system. A faulty connection can disrupt the flow of electricity and affect the door's operation. Tighten any loose connections and replace any damaged wires.

If you have tried all these troubleshooting steps and the problem persists, it is recommended to contact a S4A's professional technician at sales@s4a-access.com or the S4A's customer service for further assistance. They have the expertise and specialized tools to diagnose and fix more complex issues with automatic sliding doors.

Author: Written by Ms.Anna Zhang from S4A INDUSTRIAL CO., LIMITED

Lead acid batteries are generally safe to use when handled and maintained properly. However, it's essential to follow safety precautions to minimize risks. Here are some key points to consider regarding the safety of lead acid batteries:

1. Ventilation:

Lead acid batteries emit hydrogen gas during charging, which is flammable and can be hazardous in enclosed or poorly ventilated areas. It's important to charge and operate these batteries in well-ventilated spaces to prevent the buildup of potentially explosive gases.

2. Acid Exposure(Hazards):

Lead acid batteries contain sulfuric acid, which is corrosive and can cause burns or damage if it comes into contact with the skin, eyes, or clothing. It's crucial to handle batteries with care and wear appropriate personal protective equipment, such as gloves and goggles, when working with them.

3. Storage and Charging:

Batteries should be stored upright in a cool, dry area, away from ignition sources. Proper charging procedures and equipment should be followed to avoid overcharging, which can lead to gas buildup, electrolyte boiling, or even battery rupture. It's essential to use a compatible charger with the correct voltage and charging parameters specified by the sealed lead-acid battery manufacturer. 

4. Handling:

Lead acid batteries are heavy and can pose a risk of physical injury if not handled properly. Lift and carry them using the recommended techniques and equipment, such as battery lifting straps or carts, to prevent strain or accidents.

5. Recycling(Disposal):

Lead acid batteries contain lead, which is toxic and can harm the environment if not disposed of correctly. It's important to recycle lead acid batteries through authorized recycling facilities to ensure proper handling and environmental protection.

6. Regular Maintenance:

Routine checks of battery levels and terminals can help prevent issues like corrosion and overheating, which can lead to fire hazards.

By following safety guidelines, using appropriate equipment, and adhering to the ups battery manufacturer's instructions, the risks associated with lead acid batteries can be mitigated, making them relatively safe for use in various applications.

There're quite a few people have trouble on how to properly charge the Lead-Acid Batteries, this blog will guide you and let you know the best steps and pratices.

Choose the Right Charger

Select a charger that is designed for your specific type of lead acid battery, whether it's flooded batteries, AGM (Absorbed Glass Mat) batteries, or gel batteries. Each type has different charging requirements regarding voltage and current levels.

Connect Charger

Connect the charger's positive (red) clip to the positive terminal of the battery and the negative (black) clip to the negative terminal. Ensure a secure and proper connection.

Multi-Stage Charging:

Lead acid batteries should be charged in multiple stages, including bulk charging, absorption charging, and float charging. Smart chargers with microprocessors can automate this process and adjust the current and voltage as required for an optimal charge.

Set Charging Parameters

Refer to the vrla battery manufacturer's recommendations for the charging voltage and current settings. Set the charger accordingly to avoid overcharging or undercharging.

Bulk Charging

This stage delivers the highest current to rapidly bring the battery up to about 80% of its full capacity. The voltage rises until it reaches a pre-set limit based on the battery type.

Absorption Charging

Once the battery reaches the predefined voltage, it enters the absorption charge stage. The current tapers off while the charger maintains a steady voltage, topping off the remaining 20% of the battery’s charge.

Float Charging

After the battery is fully charged, the charger switches to the float charge stage, maintaining the battery’s charge without overloading it. The voltage is reduced to a lower level to keep the battery topped up without producing gas or excessive heat.

Safety Precautions

Always charge lead acid batteries in a well-ventilated area to prevent the buildup of gases, such as hydrogen, which is highly flammable. Hydrogen gas can accumulate and become hazardous if not properly ventilated.

Temperature Control

Ideally, lead acid batteries should be charged at temperatures below 80°F (27°C). Charging at high temperatures can lead to thermal runaway, where the battery overheats and becomes damaged.

Avoid Overcharging

Overcharging a lead acid battery can shorten its lifespan by producing excess gas and leading to a loss of electrolyte in flooded batteries and increased internal pressure in sealed AGM batteries and gel batteries. Use smart chargers that automatically adjust the charging current and voltage based on the battery’s state of charge.

Regular Maintenance

For flooded lead acid batteries, regularly check and maintain the proper electrolyte levels to ensure optimal performance. Inspect the battery terminals for any corrosion or buildup. Clean the terminals if necessary and ensure they are tightly connected.

Charge After Each Use

To maximize battery lifespan, charge the battery after each use.

Remember, proper charging is essential to maintain the performance and longevity of a lead acid battery. Follow the lead acid battery manufacturer's instructions and guidelines for your specific battery model to ensure safe and effective charging.

How do you test a lead-acid battery and check if it's still good? Well, to do it properly, you need to follow these steps:

Safety precautions:

Make sure you are wearing appropriate protective gear, such as gloves and safety glasses, as lead-acid batteries contain sulfuric acid, which is corrosive.

Visual inspection:

Begin by visually inspecting the battery for any signs of damage, such as cracks, leaks, or corrosion on the terminals. If you notice any issues, it's recommended to dispose of the battery properly and not proceed with testing.

Open-circuit voltage test:

Use a multimeter to measure the battery's open-circuit voltage (OCV) by touching the multimeter probes to the positive and negative terminals. A fully charged lead-acid battery should typically have an OCV of around 12.6 to 12.8 volts. If the voltage is significantly lower, it may indicate a discharged or faulty battery.

Load test:

A load test helps assess the battery's ability to deliver power under a simulated load. You can use a battery load tester or take the battery to a professional for this test. The load test applies a controlled load to the battery while monitoring its voltage. If the voltage drops significantly or the battery cannot sustain the load, it may indicate a weak or defective battery.

Specific gravity test (for flooded batteries):

If you have a flooded lead-acid battery, you can use a hydrometer to measure the specific gravity of the electrolyte in each cell. Check the lead acid battery manufacturer's specifications for the recommended specific gravity values. Significant variations in specific gravity between cells may indicate an imbalance or a faulty cell.

Interpretation of results:

Based on the test results, you can determine the health of the lead-acid battery. If the battery performs well in the open-circuit voltage, load test, and specific gravity (for flooded batteries), it is likely in good condition. However, if it fails multiple tests, shows significant voltage drop or cannot hold a charge, it may be time to replace the battery.

Remember, if you're not sure or not confident in testing lead-acid batteries yourself, it's recommended to seek professional assistance or take the battery to a qualified service center for evaluation.

When it comes to lead acid batteries, the weight is generally seen as an indication of its capacity and durability. In most cases, a heavier lead acid battery tends to have a higher capacity and longer lifespan compared to a lighter one. The weight is primarily due to the lead plates and electrolyte content within the battery. Sealed lead acid batteries are known to be heavier compared to other types of batteries due to their construction and the materials used. When we do business with customers, if they prefer good quality of batteries, they always will go for the heavier ones. It seems like an industry standard.

However, it is important to note that the weight alone should not be the sole criterion for determining the quality or performance of a lead acid battery. Other factors such as voltage, capacity, cycle life, maintenance requirements, different lead acid battery manufacturing process and brand reputation also play crucial roles in assessing the overall battery performance. The performance of lead-acid batteries mainly depends on the following factors:

1. Materials and Manufacturing Processes:

The quality of lead and acid used inside the battery, as well as the manufacturing process of the battery, can all affect the performance of the battery.

2. Capacity:

The capacity of a battery refers to the amount of electrical energy it can store, usually measured in ampere hours (Ah). The larger the capacity, the more electricity the battery can provide.

3. Discharge Performance:

Including discharge current, discharge depth, etc., these factors determine the performance of the battery under different load conditions.

4. Lifespan:

The cycle life of a battery, which refers to how many times it can be charged and discharged before its performance significantly decreases.

5. Environmental Adaptability:

The performance of batteries under different environmental conditions such as temperature and humidity.

6. Weight and Volume:

Although heavier lead-acid batteries may mean the use of more lead material, which may result in greater capacity, this is not absolute. The design and material efficiency of batteries can also affect their performance.

Therefore, when choosing lead-acid batteries, the above factors should be considered comprehensively, rather than simply judging based on weight. For specific application scenarios, it may be necessary to choose the appropriate battery type and specifications based on actual needs. It is always recommended to consult the lead acid battery manufacturer's specifications and guidelines or seek professional advice to select the right lead acid battery for your specific needs.

The imposition of 104% tariffs on lead-acid batteries will have significant impacts on the industry, both in the United States and globally.

Impact on the US Lead-Acid Battery Industry

Increased Costs:

The tariffs will significantly increase the cost of imported lead-acid batteries. This is particularly relevant for the US, which relies heavily on imports, especially from China.

The cost increase could lead to higher prices for consumers and businesses that rely on lead-acid batteries, such as automotive manufacturers, telecom backup centers, and other industrial users.

Supply Chain Disruptions:

The tariffs may disrupt existing supply chains, forcing companies to seek alternative suppliers. This could lead to short-term shortages and long-term changes in sourcing strategies.

Companies may need to invest in new supply chain infrastructure to mitigate the impact of the tariffs.

Impact on Domestic Production:

The tariffs could incentivize domestic production of lead-acid batteries in the US. However, the industry may face challenges in scaling up production quickly enough to meet demand.

Domestic battery manufacturers may benefit from increased demand, but they will also face higher input costs due to potential tariffs on raw materials.

Impact on Global Lead-Acid Battery Industry

Export Pressure:

Exporters, particularly those from China, will face significant challenges due to the high tariffs. This could lead to a slowdown in exports to the US market.

Manufacturers in other countries may also be affected as they may need to adjust their production strategies to remain competitive.

Market Price Dynamics:

The tariffs are likely to set the marginal price for battery energy storage systems (BESS) in the US market, at least in the short term.

Alternative suppliers from other regions, such as Southeast Asia and South Korea, may gain market share, but their products are likely to remain more expensive than Chinese imports.

Environmental and Recycling Implications:

The lead-acid battery industry is highly dependent on recycling for its raw materials. Tariffs may affect the economics of recycling, especially if the cost of recycled lead increases. In the long term, the industry may need to invest more in recycling infrastructure to ensure a stable supply of lead.

Conclusion

The imposition of 104% tariffs on lead-acid batteries is likely to lead to higher costs, supply chain disruptions, and changes in market dynamics. While domestic production in the US may benefit from increased demand, the overall impact on the industry is expected to be significant and complex. Companies will need to adapt their strategies to navigate these challenges and capitalize on new opportunities. Let's embrace it!

It is with great pleasure that we, CIQTEK, announce an attendance at a workshop dedicated to Aqueous Organic Redox Flow Batteries, to be held in the Campus des Cordeliers at Sorbonne University (Paris, France) on April 24-25, 2025. We will also bring the Electron Paramagnetic Resonance (EPR) Spectrometer-related materials to have friendly exchanges with scientists and researchers from all walks of life.

The workshop aims to bring together the whole community working on Aqueous Organic Redox Flow Batteries, at various research and development stages from fundamental research to prototypes.

The first edition will focus on best practices for determining performance metrics, including capacity, energy, and power, during the early development stages of new chemistries. It will also address methodologies to assess the stability of organic redox active materials, considering degradation mechanisms and projected lifetimes.

The workshop will also cover methodologies and techniques for accurately determining SOC and SOH, recommended procedures for conducting accelerated aging tests, predictive tools for assessing the long-term stability and performance of the RFB, and challenges to be addressed when scaling up AORFB technologies from laboratory-scale experiments to larger industrial applications. Looking forward to seeing you in Paris!

Meet us at the Workshop

Date: April 24 - 25, 2025

Location: Sorbonne University, Paris, France

CIQTEK participated in the prestigious Experimental NMR Conference (ENC) 2025 ENC-ISMAR Joint Conference, held from April 6 to 10 in Pacific Grove, California. The conference served as an excellent platform for CIQTEK to showcase its cutting-edge research and advancements in single-molecule magnetic resonance and its wide-ranging applications.

During the event, CIQTEK's renowned experts, including the Vice President, Chief Engineer, and Overseas Division Head, presented a keynote lecture on the groundbreaking topic of "single-molecule magnetic resonance and applications." The presentation highlighted the company's pioneering work in leveraging NMR techniques to analyze and study individual molecules, revolutionizing the understanding and utilization of molecular structures in various scientific fields.

"We are honored to have had the opportunity to share our latest research and innovations in single molecule magnetic resonance at the ENC 2025 ENC-ISMAR Joint Conference," said Eric, Vice President of CIQTEK. "By unraveling the mysteries of individual molecules, we aim to unlock new insights and applications that will shape the future of scientific exploration. We look forward to continuing our contributions to the field and collaborating with esteemed professionals in driving advancements in NMR and Electron Paramagnetic Resonance technology."

S4A UHF Card Readers: Compatibility and My Personal Experience

As someone who has been working closely with RFID technology for a significant period, I've had the opportunity to use and test a wide range of RFID readers and tags. Among them, S4A UHF card readers have stood out for their reliability, performance, and compatibility. With over 15 years in the market and little feedback on quality issues, these readers have earned a reputation for excellence.

When it comes to compatibility, S4A UHF card readers are designed to work seamlessly with a wide range of RFID tags and cards. This is a crucial aspect, as the ability to integrate with existing systems and hardware is often a top priority for businesses and organizations. In my experience, S4A readers have demonstrated impressive compatibility with various RFID tags and cards, making them a versatile solution for a wide range of applications.

One of the first things I noticed about S4A UHF card readers is their ability to work with tags of different frequencies. RFID tags are available in various frequencies, including low-frequency (LF), high-frequency (HF), and ultra-high-frequency (UHF). S4A readers are compatible with UHF tags, which are widely used in applications that require long reading distances and high-speed data transmission. This makes them ideal for environments such as warehouses, logistics centers, and large-scale events, where the ability to quickly and accurately track and manage inventory is crucial.

In addition to frequency compatibility, S4A long range uhf rfid reader are also designed to work with tags that use different protocols. RFID tags and readers communicate using specific protocols, and it's essential that the reader can understand and interpret the signals sent by the tags. S4A readers support a wide range of protocols, including ISO 18000-6B and ISO 18000-6C (EPC GEN2), making them compatible with a vast majority of RFID tags on the market.

The compatibility of S4A long range uhf rfid reader extends beyond just RFID tags. These readers also offer a range of communication interfaces that make it easy to integrate them into existing systems. Whether you need to connect the reader to a computer via USB, a network through TCP/IP, or an access control system using Wiegand or RS485, S4A long range uhf rfid reader have the necessary interfaces to meet your needs. This level of flexibility ensures that the readers can be easily integrated into various environments and systems, without the need for extensive modifications or additional hardware.

I've had the pleasure of working with S4A long range uhf rfid reader in a variety of settings, and their compatibility has always been a standout feature. For example, in a recent project where I was tasked with upgrading the RFID system in a large warehouse, I was concerned about the compatibility of the new readers with the existing tags. However, my fears were quickly alleviated when I discovered that S4A long range uhf rfid reader were fully compatible with the tags we were already using. This meant that we could upgrade the system without having to replace all the tags, saving us time and money.

Another instance where S4A long range uhf rfid reader compatibility came in handy was during a conference where we needed to track attendees using RFID badges. The badges were provided by a third-party vendor, and I was unsure if they would be compatible with our readers. However, after conducting some tests, we found that the S4A readers worked flawlessly with the badges. This ensured a smooth and seamless attendance tracking process throughout the conference.

The compatibility of S4A UHF card readers is not just a technical specification; it's a testament to the company's commitment to customer satisfaction and flexibility. By designing readers that can work with a wide range of tags and systems, S4A has made it easier for businesses and organizations to adopt RFID technology without having to worry about compatibility issues.

In conclusion, S4A UHF card readers are a highly compatible solution that can work seamlessly with a wide range of RFID tags and cards. Their ability to support different frequencies, protocols, and communication interfaces makes them a versatile and flexible choice for various applications. Based on my personal experience, I can confidently say that S4A readers are a reliable and trustworthy option for anyone looking to implement or upgrade their RFID system.