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When it comes to purchasing an industrial chiller, one of the most important decisions you'll face is whether to go with an air cooled chiller or a water cooled chiller. Both options offer effective cooling solutions, but each comes with its own set of advantages and limitations depending on your specific needs, operational environment, and budget. In this blog, we’ll break down the differences between these two types of chillers and help you determine which one is best suited for your business.   What Are Air Cooled and Water Cooled Chillers? Before diving into the pros and cons, it’s important to understand the basic differences between air cooled and water cooled chillers. Air Cooled Chillers: These chillers use the surrounding air to dissipate heat. The condenser is equipped with fans that blow air through the condenser coils to cool down the refrigerant. Water Cooled Chillers: These units use water to absorb and carry away heat from the refrigerant. A cooling tower, often placed outside the building, circulates water to absorb heat and releases it into the atmosphere.   1. Installation and Space Considerations Air Cooled Chillers are generally easier and quicker to install. Since they rely on air for cooling, there's no need for external cooling towers or additional water treatment systems. This makes them an ideal choice for businesses that may have limited space or those that need a more flexible, less complex installation process. They are perfect for smaller facilities or those located in areas where space is limited. On the other hand, Water Cooled Chillers require additional infrastructure, including a cooling tower and water circulation systems. This means they take up more space and may require more time and cost to install. They are typically used in larger operations or facilities with more space available for the required systems.   2. Energy Efficiency When it comes to energy consumption, Water Cooled Chillers generally perform better in larger applications or facilities that require consistent and reliable cooling. They are more energy-efficient in the long run because they tend to operate at a lower temperature, which can reduce overall energy usage. Water’s higher thermal conductivity allows it to absorb more heat, making these chillers better suited for high-capacity cooling needs. However, Air Cooled Chillers can be a more cost-effective solution for smaller systems or applications with less demanding cooling requirements. While they might consume more energy than their water cooled counterparts under heavy loads, they are typically sufficient for moderate cooling needs and may result in lower initial installation costs.   3. Maintenance and Operation Costs Air Cooled Chillers are generally easier to maintain because they do not have the additional components of a cooling tower or water circulation systems. Maintenance tends to be simpler, with fewer parts to inspect and clean. However, because they rely on outdoor air for cooling, they can accumulate dirt and debris, which might require more frequent cleaning of the condenser coils. Water Cooled Chillers require more regular maintenance, especially for the cooling tower, water pumps, and pipes. Additionally, you need to keep an eye on water quality, as scaling, corrosion, and bacteria growth can develop in the system if not treated properly. While maintenance costs can be higher, the overall lifespan and efficiency of water cooled systems can make them more cost-effective in larger, industrial applications.   4. Environmental Impact and Noise Air Cooled Chillers tend to be more environmentally friendly in terms of water consumption since they don’t rely on large amounts of water for cooling. However, they can generate more noise due to the fans used to circulate air through the condenser. This can be a concern in noise-sensitive areas or in places where sound regulations are strict. Water Cooled Chillers, on the other hand, tend to operate more quietly, but they require a constant supply of water, which can be a concern in regions with water shortages or strict water usage regulations. Moreover, the energy consumption of water cooled chillers can indirectly contribute to environmental impact, especially in regions where electricity comes from non-renewable sources.   5. Best Use Cases Air Cooled Chillers are a great choice for: Small to medium-sized operations. Facilities with limited space or where water use is a concern. Locations where installation speed and simplicity are critical. Situations where quieter operation is less important.   Water Cooled Chillers are ideal for: Large industrial applications or facilities with high cooling demands. Locations with ample water supply and space for cooling towers. Operations looking for long-term energy efficiency and higher cooling capacity. Businesses that require quieter operation and can handle the maintenance demands.   Choose an air cooled chiller if you’re operating in a smaller facility, have limited space, or need a simpler, lower-cost solution. Opt for a water cooled chiller if you need more energy efficiency, have the space for additional infrastructure, and are running a large-scale operation with heavy, continuous cooling requirements. At the end of the day, both types of chillers can provide reliable and efficient cooling solutions—it's all about choosing the one that best aligns with your business needs and operational goals.   Hope this helps guide you in your decision-making process! If you need more details or personalized advice, feel free to contact us at Hengde company for expert recommendations on the best chiller systems for your business.

When choosing a mold temperature controller manufacturer, you can consider the following aspects:   1. Manufacturer's credibility and reputation Choosing a mold temperature controller manufacturer with good credibility and reputation is an important guarantee to ensure product quality and after-sales service. Old mold temperature controller manufacturers with a certain history and experience can usually provide more stable and reliable mold temperature controller products. You can also consult professionals or companies in the industry to understand the credibility of the manufacturer. Of course, you can also learn about other users' online reviews and usage feedback through social media, industry forums and other channels to make a more informed choice. Hengde was established in 2010 and has 15 years of experience in the mold temperature controller industry. It is trustworthy. Welcome to follow Hengde's social media accounts, such as Facebook, LinkedIn, Twitter, YouTube, etc., to learn about Hengde's positive feedback from customers.   2. Technology R&D and innovation capabilities Innovation and improvement of mold temperature controller technology are crucial to improving production efficiency and product quality. Understand whether the manufacturer has independent R&D capabilities, a professional team of engineers, and their patents and innovations in the field of mold temperature controllers. These factors will determine whether the manufacturer can provide high-quality and high-efficiency mold temperature controller products that meet industry needs. Hengde Company has its own R&D team and has obtained 8 patent certificates and 3 intellectual property rights.   ‌3. Product quality and performance ‌ The quality and performance of the mold temperature controller are directly related to the stability of the production process and the quality of the product. Pay attention to the manufacturer's quality management system, production process, product testing methods and quality assurance measures to ensure that the purchased mold temperature controller has stable and reliable performance, durability and safety. Hengde mold temperature controllers are of high quality and have passed ISO9001, CE, SGS and other certificates.   ‌4. After-sales service and technical support ‌ After-sales service and technical support are also very important when choosing a mold temperature controller manufacturer. Ensure that the manufacturer can provide timely and efficient technical support and can quickly respond to and solve customer problems during use. Hengde Company has a complete pre-sales and after-sales system. 24-hour uninterrupted customer service, free pre-sales consultation, technical training and operation training, etc., according to the actual needs of customers, door-to-door service can also be provided, on-site guidance of the installation and commissioning of mold temperature controller equipment, so that your products are worry-free.   ‌5. Main business and experience‌ Choosing a manufacturer whose main business is mold temperature controller, usually its quality and service will be more guaranteed. Find out whether the manufacturer strictly implements international quality system standards, and pay attention to whether its product line covers a variety of types of mold temperature controller equipment. Hengde Company has various models of water mold temperature machines and oil mold temperature machines, with hundreds of product models. Different types of mold temperature controllers are produced for different industries. For example, for industries such as chemical, oil and gas, and pharmaceuticals, their industrial occasions are often flammable and explosive. At this time, Hengde explosion-proof mold temperature controllers should be purchased. For the die-casting industry, the temperature control range needs to reach 350℃. Hengde Company specializes in producing die-casting mold temperature controllers, as well as rubber mold temperature controllers, plastic mold temperature controllers, etc.   6. Price and cost performance Compare the prices of mold temperature controllers from different manufacturers, but don't just look at the price. A price that is too low may mean that there are problems with product quality or service, while a price that is too high may exceed the budget and may not provide the value to match. It is necessary to comprehensively consider factors such as product performance, quality, and technical support to evaluate whether the price is reasonable. Comprehensively evaluate the cost performance of the mold temperature controller based on factors such as product quality, technical support, and after-sales service. For example, a manufacturer with a slightly higher price but reliable quality, perfect technical support, and timely after-sales service may have a higher cost performance from the perspective of long-term use and reducing the risk of production interruptions. You can make a simple evaluation form to score the products of different manufacturers on various factors, calculate the comprehensive cost performance score, and then choose the best manufacturer.   As a professional purchaser, which part do you value most when choosing a mold temperature controller? Welcome to discuss with us to take the mold temperature controller industry to a higher level.  Choose Hengde, Choose Perfect Mold Temperature Controllers!

Choosing a chiller that suits your needs requires considering multiple factors. Here are some suggestions for purchasing a chiller:   1. Determine the cooling capacity of the chiller Determine the cooling capacity of the required chiller based on actual needs. For example, factories, hospitals, etc. have high requirements for cooling capacity and need to choose chillers with larger cooling capacity, such as 200kw chillers, 500kw chillers, 1000kw chillers, 1500kw chillers, etc.; while some small injection molding equipment need to choose chillers with smaller cooling capacity. Such as 5ton chillers, 8ton chillers, 10ton chillers, etc. If you don’t know or are not sure how big an industrial chiller to buy, you can tell the application industry, equipment flow, inlet and outlet water temperature, ambient temperature, refrigerant type, voltage and other special requirements, such as pump flow, pressure requirements, explosion-proof requirements, etc. Hengde Company will recommend an industrial chiller that suits your company’s needs based on all your requirements.   2.Consider the brand and after-sales service of the chiller  The quality and after-sales service of well-known brands of chillers are better, which can ensure the long-term and stable operation of the equipment. At the same time, you should also understand the warranty period and maintenance policy of the chiller. Hengde Company has more than 15 years of experience in the chiller industry, passed ISO9001, CE, SGS and other certificates, and obtained 8 patent certificates. At the same time, Hengde Company has a complete pre-sales and after-sales system, providing 24-hour customer service. Free pre-sales consultation, technical and operation training, and on-site guidance on the installation and commissioning of the chiller according to the actual needs of customers, so that you have no worries.   3.Consider the installation conditions of the chiller According to the place of use and environment, choose suitable chiller installation conditions, such as power supply, water source, ventilation conditions, etc. For some places with limited space or inconvenient water source, you can choose air-cooled chillers, which are easy to install and occupy a small area. For places with sufficient water source and high cooling requirements, you can choose water-cooled chillers, which generate relatively less noise during operation.   4.Consider the price of the chiller When purchasing a chiller, price is an important consideration. You need to choose a cost-effective device based on your budget and actual needs. But price is not the only factor. The cost-effectiveness of the chiller needs to be comprehensively evaluated based on product quality, technical support and after-sales service.   5. Safety performance and maintenance convenience Check whether the chiller has complete safety protection measures, such as high and low voltage protection, overload protection, leakage protection, etc. High and low voltage protection can prevent the compressor from being damaged under abnormal pressure, overload protection can prevent the motor from burning due to long-term overload, and leakage protection ensures the safety of the operator. Choose a chiller that is easy to maintain. For example, the structural design of the equipment should be easy to disassemble and overhaul, and key components (such as compressors, water pumps, etc.) should be easily accessible. At the same time, the manufacturer should provide detailed maintenance manuals and technical support to facilitate users to perform daily maintenance and troubleshooting.   In short, when purchasing an industrial chiller, you need to consider the above factors comprehensively according to your actual needs and situation and choose the equipment that suits you. At the same time, pay attention to the maintenance and care of the equipment to ensure its long-term stable operation.   Choose Hengde, Choose Perfect Industrial Chillers!

Mold temperature controller, also known as mold temperature machine, was originally used in the temperature control industry of injection molds. Later, with the development of the machinery industry, mold temperature controllers were used more and more widely. Now mold temperature controllers are generally divided into water mold temperature controllers and oil mold temperature controllers. If the selected mold temperature controller matches the temperature requirements of product molding, it can greatly improve the quality of the product and reduce the operating cost of the product. So how to choose a mold temperature controller that matches your process requirements?   1. Heat transfer medium: thermal oil / water. * Water mold temperature controller: Water-type mold temperature controller uses water as a heat transfer medium and is suitable for occasions where the temperature control requirement does not exceed 200°C. Its advantages are high heat transfer efficiency, environmental friendliness, and relatively low cost. * Oil mold temperature controller: Oil-type mold temperature controller uses oil as a heat transfer medium and is suitable for high-temperature occasions. The temperature control range can reach 350°C. Oil type mold temperature controllers are suitable for industries with high temperature control requirements, such as the hot pressing mold industry.   2. Cooling method: direct cooling / indirect cooling * Direct cooling: Direct cooling is suitable for applications that require rapid cooling, such as certain plastic processing processes. This method can quickly reduce the temperature of the heat transfer medium and improve production efficiency. * Indirect cooling: Indirect cooling uses a cooling circuit separated from the main circuit. It is suitable for applications that require more precise temperature control, such as precision mold processing. With an independent cooling circuit, temperature changes can be controlled more finely.   3. Temperature control range: low temperature application / high temperature application * Low temperature application: Taking the plastics industry as an example, due to its relatively low temperature requirements, water mold temperature controllers can meet the requirements. The temperature control accuracy of water temperature controllers is roughly ±1℃, which is sufficient to meet the needs of most industrial application scenarios. * High temperature application: In the case of high temperature applications, such as rubber pressing or metal casting, where high temperature control is required, oil mold temperature controllers are suitable. Oil type mold temperature controllers can not only achieve a wider temperature control range, but also perform better in thermal stability.   4. Mold size and heat capacity Large molds often require mold temperature controllers to have sufficient heating or cooling power to quickly reach and maintain the required temperature. Molds with large heat capacity require more energy during heating or cooling. For example, a large automotive parts injection mold has a much larger heat capacity than a small plastic toy mold, so a more powerful mold temperature controller needs to be selected. The heat capacity can be estimated by calculating the volume of the mold and the specific heat capacity of the material, thereby determining the appropriate mold temperature controller power.   5. Pump flow and pressure The flow of the circulation pump determines the circulation speed of the heat transfer medium (such as water or heat transfer oil) between the mold and the mold temperature controller. Insufficient flow will cause uneven mold temperature and affect product quality. Generally speaking, the flow rate is determined according to the size and complexity of the mold. For small molds, a circulation pump flow of 10-30L/min may be sufficient, while a large and complex mold may require a flow of more than 50L/min. The pressure of the mold temperature controller must be able to overcome the resistance of the pipeline and the resistance inside the mold to ensure the smooth circulation of the heat transfer medium. If the pressure is not enough, local overheating or overcooling may occur. When selecting a mold temperature controller, consider the impact of factors such as the mold's pipeline length, pipe diameter, and number of elbows on the pressure. To meet the needs of different molds.   6. Control system Hengde mold temperature controller adopts imported microcomputer control mode. According to customer requirements, PLC control and RS485 communication function can be selected to achieve automatic management.   7. Safety Check whether the mold temperature controller has perfect safety functions, such as overheat protection, leakage protection, overload protection, etc. For industrial occasions with dangerous environments such as flammable and explosive gases, steam, dust, etc., such as chemical, oil and gas, pharmaceutical and other industries, when purchasing a mold temperature controller, you also need to consider the explosion-proof function and choose Hengde's explosion-proof mold temperature controller.   8. Purchase cost / operating cost Compare the prices of mold temperature controllers of different brands and functions. Under the premise of meeting the application requirements, choose the most cost-effective mold temperature controllers. At the same time, the operating cost of the mold temperature controller, including energy consumption, maintenance costs, etc., should also be considered.   For more questions about the purchase of mold temperature controllers, please visit Hengde's website (www.hengdechiller.com). Choose Hengde, Choose Perfect Mold Temperature Controllers!

Industrial chillers are widely used in industrial refrigeration equipment. Their maintenance is very important to ensure their normal operation and extend their service life. The specific maintenance measures and cycles are as follows:   Daily maintenance of the industrial chillers Wipe the outer shell of the chiller regularly to check for signs of damage, deformation or corrosion. Check whether there are blockages at the inlet and outlet of the chiller, such as dust, debris, etc. If there is a blockage, it should be cleaned in time to ensure good ventilation. Check whether the pipe connection of the chiller is firm and whether there is damage, deformation, or leakage on the appearance. Especially for pipe joints, valves and other parts, ensure good sealing. If there is a problem, the pipe should be replaced in time to prevent leakage or affect the cooling effect. Check the operating status of the chiller, such as whether the compressor, water pump and fan have noise and abnormal sounds. Check the outlet water temperature and return water temperature of the chiller to ensure that the temperature is within the set range. Check the pressure of the system, including the refrigerant pressure and water pressure, to ensure smooth water circulation.   Regular maintenance of the industrial chillers For some important parts of the chiller, special attention should be paid during maintenance: 1. Condenser of the chiller The condenser of the water cooled chiller is prone to scaling, and the condenser of the air cooled chiller is prone to dust accumulation. These two factors will not only affect the heat dissipation effect of the chiller, resulting in a decrease in cooling capacity, but will also affect the increase in the power of the chiller and easily damage the compressor of the chiller. Therefore, the condenser must be cleaned regularly, and the specific maintenance time should be determined according to the actual use environment of the customer.   2. Compressor of the chiller After the compressor of the chiller has been running for 1,000 hours, check whether the compressor refrigeration oil is normal; whether the current is normal during operation; and whether there is any abnormal sound during operation.   After the machine has been used for a certain period of time, due to various factors, the pressure switch needs to be tested to see whether it can alarm high and low pressures. For the electric control box, the dust inside should be blown clean regularly, and the screws should be checked for looseness to avoid damage to the machine.   Attached is the regular maintenance schedule for common parts of Hengde chillers Item Maintenance Period Clean the condenser 3 months Check the chilled water pump 3 months Check the wires (corner insulation)  1 month Check the cooling water supply (water-cooled) 1 week Check various safety protection devices 1 month Check the operating current of the compressor and water pump 3 months   Choose Hengde, Choose Perfect Industrial Chillers!

Hengde mold temperature controllers are widely utilized in a diverse range of industries. Such industries encompass plastic & rubber manufacturing, the chemical field, electronic production, food & beverage, the wood board industry, die casting, printing, and many others.   How to maintain it? Hengde mold temperature controller maintenance is mainly divided into daily inspection and regular maintenance.   Daily Inspection: 1. Check the mold temperature controller housing and control panel to keep them clean and dry, and avoid using detergents containing acidic and alkaline substances to wipe stains. When wiping the inside with a rag, pay special attention not to damage the electrical parts. 2. Check whether each component is normal, such as checking whether the temperature display of the mold temperature controller is normal, checking whether the parameter setting of the controller has changed; whether there is leakage at the pipe connection, and check whether there is liquid dripping or moisture at the joint. Observe whether the oil pump, water pump and other running parts have abnormal noise or vibration. The sound should be stable and there is no obvious shaking during normal operation. Check whether the cable is damaged or worn, and replace it in time if necessary.   Regular Maintenance: Perform in-depth maintenance on the mold temperature controller every certain period of operation (according to the requirements of the equipment manual). The following is the maintenance time of each accessory: Item Maintenance Period Maintenance Solenoid valve 1 month (actual operation 600 hours)  Dismantling and cleaning Liquid level switch 1 month (actual operation 600 hours)  Dismantling and cleaning Mold connection hose 1 month (actual operation 1200 hours) Dismantling and cleaning Noise / strange smell / heat Every day No Noise / Vibration Loose terminals 3 months Inspect and tighten Dust and garbage in control cabinet 1 month Clean Electromagnetic contactor (Pump)  3 years Replace Liquid level display tube Every day Check for proper amount Heat transfer oil 6 months Replace PC board  3 years Replace Pump 1 year(Every day)  Confirm noise Pipeline 1 month  Check and confirm no oil leakage   Special Precautions: 1. It is best to clean the equipment return filter once a month. After the test machine is completed, it is best to clean it several times before normal use. 2. Tighten the screws of all electrical parts of the equipment once a month (especially the contactor, because the long-term operation of the mold temperature controller may cause the screws to loosen); 3. Before shutting down, it is recommended to lower the temperature of the water mold temperature controller to below 40℃ and the temperature of the oil mold temperature controller to below 80℃ before shutting down, which can extend the service life of the pump and heating tube. 4. If the customer's equipment pipeline is higher than the oil tank of the Hengde mold temperature controller, the oil tank can be raised, or the inlet and outlet valves can be turned off first, and then shut down to prevent backflow when the circulation pump is not working.   Choose Hengde, Choose Perfect Mold Temperature Controllers!

In recent times, the advancements in shipbuilding technology and the growth of offshore fishing have led to increased focus on marine water chillers. These marine chillers are essential for maintaining the freshness of caught fish, ensuring they remain in good condition until they are unloaded ashore or processed further on the ship.   The operational principle of marine chillers resembles that of their land-based counterparts. A compressor is used to transform low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure gas. This is then sent to the condenser, where heat is dissipated via a cooling medium, typically seawater, causing the refrigerant gas to condense into a liquid. The liquid refrigerant, after passing through a throttling device to reduce its pressure, enters the evaporator. Here, it absorbs heat from the cooled medium, such as air or water, thereby achieving the refrigeration effect. The cooled medium is then piped to the equipment or system requiring cooling, completing the cooling cycle. Hengde Marine Chillers 40HP Marine Chillers 15HP Marine Chiller 10HP Marine Chillers   The key components of marine chillers include compressors, condensers, evaporators, throttling devices, and control systems. The compressor is the central part of a marine chiller, with common types being piston, reciprocating, screw (semi-closed or open), or scroll compressors. The condenser usually has a shell and tube structure, often made of nickel-copper on the inside, and uses seawater as the cooling medium. To safeguard against seawater corrosion, corrosion-resistant materials like titanium alloy or stainless steel are employed. The evaporator typically has a shell and tube or plate structure and can be made of stainless steel based on customer requirements. Its design must consider the spatial constraints and cooling needs of the ship, aiming for efficient heat exchange, compact size, and light weight.   Hengde, as a specialized manufacturer of marine chillers, has assisted numerous fishing enterprises in resolving fish storage issues. A notable example is the case of a Maldivian customer. Five years ago, a Maldivian marine shipyard contacted us. Their clients reported that the ships in operation lacked refrigeration equipment, resulting in a large number of caught fish perishing due to temperature differences. Consequently, they intended to install marine chillers on all their ships. Since the installation of our marine water chillers, the water temperature has been kept at an appropriate level, ensuring the fish stay fresh. The performance and capabilities of our marine chillers left a profound mark on the customer. They are now constructing a new shipbuilding factory and plan to equip all future ships with Hengde's marine chillers.   Choose Hengde, Choose Perfect Marine Chillers!

During the installation of the mould temperature controller, great care must be taken to avoid any damage to the unit. Adequate space around the mould temperature controller should be allocated in a rational manner to ensure convenient access for its maintenance and servicing. The cooling water system ought to be meticulously designed and installed in strict accordance with the national standard piping system design and construction installation criteria, thereby maximizing the performance of the mold temperature controller.   1. Water Mold Temperature Controllers The heat transfer medium for the water mold temperature controller must be a pristine water source, free from sand, soil, or other contaminants. If groundwater is utilized, it should be softened. The circulating water should be replaced on a regular monthly basis. Water with impurities can readily clog the pipelines and inflict damage on the machine. Unsoftened water is prone to scale formation, which severely impairs the heating and heat transfer efficiencies and diminishes the service life of the heating tubes.   2. Oil Mold Temperature Controllers Prior to operation, it is essential to employ high quality, clean, and heat transfer oil of a unified brand. Brands such as Mobil, Esso, and Total are recommended. The use of inferior heat transfer oil can lead to heater fouling and burnout, pump impeller wear, and a reduction in flow rate, consequently shortening the normal service life of the equipment. The oil mold temperature controller machine should not be moved casually while it is in operation. If the mold temperature controller requires repair, the oil temperature must be lowered to below 80℃ (176℉)  before any repair work can commence. The potential causes of motor overload include power phase loss, pipe blockage, and bearing damage. When the motor is overloaded, the motor overload relay will automatically trip and halt the machine to safeguard the motor. The alarm can be cleared by pressing the "Reset (green button)" switch on the overload relay. Before shutting down the pump, it is necessary to wait until the oil temperature has dropped below 80℃ (176℉)  ; otherwise, its service life will be adversely affected. To achieve a stable control temperature, the cooling water pressure should be maintained within the range of 1 - 3 kg/cm².     In conclusion, correct installation, proper heat transfer medium management, and strict adherence to operational guidelines are vital for the performance and durability of water and oil temperature controllers. Following these instructions and precautions ensures reliable operation, reduces malfunctions, and boosts productivity. Regular maintenance and performance monitoring enhance efficient and sustainable use, protecting the investment in Hengde mold temperature controllers.   Choose Hengde, Choose Perfect Mold Temperature Controller!

In recent times, the Hengde mold temperature controller has garnered significant acclaim from both domestic and international customers, owing to its dependable performance and cutting-edge technology. With its soaring popularity in the global market, it has witnessed substantial export volumes to over 100 countries and regions, including the United States, Russia, Australia, Africa, and Southeast Asia, thereby earning high regard among customers worldwide.   Nevertheless, during the operational phase, certain malfunctions are bound to occur. In such instances, how can one undertake self-troubleshooting? The following suggestions are presented, and it is advisable to initially examine these solutions.   Common Failures for the Mold Temperature Controllers Cause Solutions 1. Unable to start, no fault indicator light. 2P2A Circuit breaker tripped Open the circuit breaker to check the cause. Phase loss Check the power cord. Transformer burnt Replace the transformer. 2. The indicator light for lack of media is on. The cooling water is not turned on or the pressure is insufficient Open the cooling water valve and check the pressure. Pressure switch problem Adjust the pressure switch or replace it. Insufficient heat transfer oil Add heat transfer oil 3. Pump overload light on. System overload 1. Check whether the hot water inlet and outlet valves are open and press the reset button; 2. Clear the scale of the electric heater. The power supply voltage is abnormal or the phase is missing 1. Use a three-phase meter to measure the three-phase voltage; 2. Check whether the power supply terminal is loose and tightened, and press the reset button. 4. The temperature is too high and cannot be cooled. The solenoid valve is blocked Clean the solenoid valve The solenoid valve coil is aging or damaged Parts need to be replaced. 5. Unable to heat or reach a certain temperature and no longer rise Solenoid valve is blocked or damaged Clean the solenoid valve or replace accessories. Heating tube burns out Replace the heating tube. 6. The fault light is on and the alarm does not sound Alarm failure Replace the alarm. The above methods are only for mud pump products of Hengde brand. Our mould temperature controllers are constantly updated and upgraded. Please contact us if you have any questions.    By understanding and addressing these common faults and their corresponding solutions, users can ensure the smooth and efficient operation of Hengde mold temperature controllers, maximizing their productivity and minimizing downtime. With proper maintenance and prompt troubleshooting, Hengde mold temperature controllers will continue to serve various industrial needs effectively and maintain their reputation for quality and reliability in the long run.   Choose Hengde, Choose Perfect Mold Temperature Controller!