In modern industrial production, the choice of cooling equipment directly impacts both efficiency and cost control. As a professional industrial chiller manufacturer, QUMAL understands this critical need and is committed to providing the highest quality solutions for our customers.

QUMAL's air cooled screw chiller stands out for its exceptional cooling performance and reliability, making it ideal for a wide range of industrial applications. Whether it's maintaining consistent temperatures in large manufacturing facilities or protecting precision equipment, QUMAL's air cooled screw chiller delivers energy-efficient, dependable service.

By choosing QUMAL, you're not just getting an industrial air cooled chiller; you're gaining a comprehensive, one-stop service experience. From initial needs analysis and custom product design to installation, commissioning, and ongoing maintenance, our team is with you every step of the way, ensuring your equipment performs reliably even in the harshest environments.

Our customers span various industrial sectors, and with our extensive experience and deep expertise, QUMAL has helped numerous companies reduce energy consumption while enhancing production efficiency. As your industrial chiller supplier, QUMAL is committed to delivering exceptional product quality and dedicated after-sales support to safeguard your operations.

Choosing QUMAL means more than just acquiring equipment—it means selecting a trustworthy partner who will help make your production more efficient, economical, and sustainable.

Ensuring the longevity of an industrial air cooled chiller involves a series of diligent maintenance practices designed to maintain optimal performance and prevent premature wear. Regular inspections and upkeep are critical for the efficient operation of these systems. For an air cooled screw chiller, frequent checks of key components such as the compressor, condenser coils, and evaporator are essential. The compressor should be monitored for any signs of wear or inefficiency, like unusual noises or vibrations, which could indicate potential issues. Keeping the condenser coils clean is equally important, as dirt and debris can obstruct airflow and reduce the system’s efficiency.

Maintaining proper refrigerant levels is another crucial aspect of prolonging the life of an industrial air cooled chiller. Low refrigerant levels can cause the system to overheat, potentially damaging the compressor and other components. Regular monitoring and replenishment of refrigerant help maintain the system’s efficiency and prevent breakdowns. Additionally, inspecting and replacing worn-out seals and gaskets can prevent leaks and ensure the system operates smoothly. This practice is particularly important in maintaining the effectiveness of the water chiller cooling system, which relies on precise refrigerant levels for optimal performance.

Lubrication of moving parts is vital for the longevity of an air cooled screw chiller. Regularly checking and replacing lubricants as specified by the manufacturer reduces friction and wear, thereby extending the life of components such as the compressor and fans. Ensuring all moving parts are well-lubricated prevents overheating and excessive wear, which can lead to costly repairs and downtime. Regular maintenance should also include checking the electrical connections and control systems to ensure they are functioning correctly, as faulty electrical connections can lead to system malfunctions or even complete failures.

Maintaining optimal airflow around the chiller unit is crucial. Ensuring there are no obstructions around the air intake and exhaust areas helps maintain proper airflow, essential for efficient cooling. Regularly inspecting and cleaning the air filters also ensures that the system operates at peak efficiency. This practice is particularly important for an industrial air cooled chiller, where maintaining consistent airflow directly impacts the cooling performance and energy efficiency of the system.

Water quality is another important factor in maintaining the water chiller cooling system. Regularly checking and treating the water to prevent scale build-up and corrosion can prolong the life of the chiller. Ensuring that the water treatment systems are functioning properly and that the water is free of contaminants helps to prevent damage to internal components. This maintenance practice is essential for avoiding costly repairs and ensuring the efficient operation of the chiller system.

Implementing a proactive maintenance schedule is key to ensuring the longevity of an industrial air cooled chiller. Keeping detailed records of all maintenance activities and scheduling regular service checks by qualified technicians helps identify potential issues early and address them before they escalate into major problems. By adhering to these maintenance practices, operators can significantly enhance the longevity and performance of their chillers, minimizing downtime and maximizing the return on their investment.

OUMAL Chiller is a cooling tower and chiller system manufacturer integrating R&D,manufacturing and customization.Provide professional solutions.15+ years of work experience. If you have any questions about the chiller, you can send an email to answer them for you!

The importance of traditional industries in our lives is becoming more and more obvious, and the importance of related equipment that assists traditional processing industries is also becoming more and more obvious. Air-cooled chillers have become an indispensable presence in the plastics processing industry. An excellent chiller can greatly improve the surface finish of the plastic products we see now, and can also greatly reduce the probability of marks, textures and internal stress on the surface of plastic products, ensuring that the plastic products that reach consumers will not shrink or appear. In the case of deformation, choosing an air-cooled chiller can also help more convenient demoulding and product molding when processing plastic products, which greatly improves the production efficiency and product quality of the industry. Air-cooled chillers have become an indispensable refrigeration auxiliary equipment for manufacturers in the plastics industry.

Therefore, the normal operation of the industrial chiller is very important, and the lack of refrigerant will affect the cooling effect of the chiller. Air cooling is the cause of insufficient refrigerant in the chiller.

1. The newly installed chiller is not filled with refrigerant as required.

2. The air tightness of the system is not good, resulting in refrigerant leakage.

3. Improper operation and maintenance may lead to refrigerant leakage.

Insufficient refrigerant in an industrial chiller can lead to several harmful consequences, including:

Reduced cooling capacity: The refrigerant is responsible for absorbing heat from the process fluid and transferring it to the environment. If there is not enough refrigerant, the cooling capacity of the chiller will be reduced, leading to higher process fluid temperatures and decreased efficiency.

Increased energy consumption: When the chiller is not operating at full capacity, it may need to run for longer periods to maintain the required temperature, resulting in higher energy consumption and increased operating costs.

Component failure: Running an industrial chiller with insufficient refrigerant can cause the compressor to overheat and eventually fail. This can result in costly repairs and extended downtime.

Reduced lifespan: Operating an industrial chiller with insufficient refrigerant can cause excessive wear and tear on the system's components, reducing its lifespan and requiring more frequent maintenance.

Safety hazards: Low refrigerant levels can cause the chiller to operate at higher pressures, which can create safety hazards for workers and potentially lead to equipment damage or failure.

Overall, insufficient refrigerant can have significant negative impacts on the performance, efficiency, and safety of an industrial chiller. It is crucial to ensure that the chiller is properly maintained and that refrigerant levels are regularly checked and adjusted as needed.

It is inevitable that the chiller will produce sound when it is working. For example, when the fan rotates, the fan blades rub against the air, it will produce sound. Normal sound is allowed. However, even the sophisticated refrigeration equipment will appear after a long period of use. Fault. Then, the editor of Oumal Chiller will take you to understand the causes and solutions of the noise produced by the chiller.

First, find the reason from the parts that are easy to check and observe:

1. Are the anchor screws loose?

The chiller is fixed on the ground. After running for a long time, the anchor bolts will be loose, and the chiller will be unstable, which will cause noise. This situation can be solved by replacing the anchor bolts, and vibration reduction can also be installed if conditions permit. The purpose is to make the chiller firmly fixed on the ground.

2. Whether the connecting pipeline is firm

There are large and small pipes on the chiller, connecting the chiller, cooling equipment and other auxiliary devices. If the connecting screws are loose, noise will be generated after operation. The solution is to fix the pipes and equipment.

3. Is there any problem with the fan?

The air-cooled chiller is equipped with a fan fan, which is composed of a fan cover and blades. The blades are deformed by external force and will generate noise after rotating. The fan cover will also cause noise due to the entry of dust and debris. Replace the blades and regularly clean the top of the fan. Sundries can reduce noise.

Then we observe whether the following parts have abnormal noise:

4. Whether the water pump makes abnormal noise

The reason for the abnormal noise of the water pump is mostly due to the water quality, which is not clean enough, which causes the water pump pipe to be blocked, causing abnormal noise at work and generating noise. The circulating water needs to be treated to meet the requirements of the chiller.

5. Whether the compressor has abnormal noise

Compressor abnormal noise is a relatively important problem. Because the compressor is the "heart" of the chiller, special attention should be paid to abnormal noise. The main reasons for compressor abnormal noise are as follows:

Reason 1: Liquid refrigerant enters the compressor

Once the liquid refrigerant enters the compressor, because it cannot be compressed, the hydraulic pressure will cause liquid shock to the internal structure, resulting in vibration or noise. In addition, too much refrigerant will dilute the refrigerating oil and cause wear of mechanical parts.

Solution: Check whether there is too much refrigerant, and release excess refrigerant; check the opening of the expansion valve, whether it is too large, and adjust it in due course.

Reason 2: Excessive refrigerant oil causes liquid shock

Solution: Check the condition of the refrigerating oil in the compressor and adjust it to an appropriate amount.

Reason three: abnormal noise of compressor cylinder and crankshaft

Generally, it is caused by the lack of lubricating oil, causing abnormal wear of the internal components of the compressor, causing abnormal noise, and also affecting the operation of the compressor and reducing the service life of the equipment.

When this happens, the compressor needs to be repaired or replaced. It is worth noting that regular inspections of the chiller and compressor condition can effectively avoid this situation.

Some people in the industry have encountered this situation. Due to the poor return of oil in the oil return pipe and the lack of refrigerating oil, the compressor crank sleeve is damaged, which generates louder noise and aggravates wear.

It is normal for a chiller in normal use to have a little sound, but irregular and sudden noises must arouse our attention. Briefly summarize the following reasons for the noise of the chiller: loose connection screws, abnormal noises of fans, fans, and water pumps. , Excessive refrigerant, excessive refrigerating oil.

After the industrial chiller system has passed the vacuum test, the vacuum state in the system can be used to charge the refrigerant.

1. Refrigerant charging

For newly installed systems, refrigerant can be added to the high-pressure end, and the operation method is as follows:

1) Turn on the cooling water system for the condenser, and keep the valve in the system as it was during the vacuum test

2) Connect the steel cylinder containing the refrigerant with the West 14mm×2mm seamless steel pipe (use a red copper pipe when filling with Freon). The mouth of the bottle is inclined downward, and the cylinder is at an angle of 30° with the ground, or the end of the cylinder is raised about 200-300mm.

3) Open the filling valve. When the system reaches a certain pressure (0.1～0.2 MPa for ammonia system; 0.2～0.3 MPa for Freon system), stop charging the refrigerant, and then check the sealing condition of the system at each connection and welding place. If there is no leakage, Can continue to charge refrigerant.

4) Close the outlet valve on the liquid reservoir and continue to charge the refrigerant. When the cylinder pressure and the pressure in the liquid reservoir reach equilibrium, the outlet valve on the liquid reservoir should be opened.

5) Start the refrigerating machine, make the refrigerating device enter the running state, and continue to charge the refrigerant at the same time. When white frost appears on the lower part of the cylinder, it means that the liquid refrigerant in the cylinder is almost completely filled. At this time, the cylinder valve and charging valve can be closed, and the bottle can be changed to continue charging.

6) Unless the outside temperature is very low, it is generally not necessary to pour hot water on the cylinder to increase the pressure in the cylinder when charging the refrigerant, because it is not safe to do so. If you need to speed up the filling speed, the hot water temperature must not exceed 50°C and other methods to heat the cylinder are strictly prohibited.

7) When filling freon, a filter drier must be installed on the special nozzle to reduce the possibility of water entering the system. When charging with high pressure section, never start the compressor, and pay attention to the exhaust valve not to leak, otherwise liquid hammer will occur.

8) When the refrigerant is charged up to 90% of the charging amount, the charging can be temporarily stopped, and the system can be tested to check whether the system dosage has met the operation requirements and avoid unnecessary trouble caused by excessive charging. For the old refrigeration system, when the refrigerant needs to be supplemented, it should be charged from the low pressure side.

2. Leak detection after filling

(1) Leak detection method with test paper Generally, phenolphthalein test paper is used to test the system's welds, flanges, and threaded connections for leaks. Wet the test paper and approach the inspected place. If it turns red, it means that there is ammonia leakage (note that the test paper should not be in contact with the soapy water on the pipe to create an illusion). Litmus paper that turns blue when exposed to ammonia can also be used.

(2) Halogen blowtorch leak detection method Halogen blowtorch is a common tool for leak detection in Freon refrigeration systems. The domestic halogen blowtorch is shown in the figure below, and the method of use is as follows:

1. Add alcohol: first unscrew the base 1 and add anhydrous alcohol with a purity of not less than 99.5% to the inside of the barrel, but the amount of injection should not be too much, just fill 1/2 to 3/4 of the volume of the lamp tube That's it, then the base should be fastened tightly.

2. Light a fire: turn the hand wheel 2 to the right, close the valve core, fill the wine glass, and then light it to heat the lamp tube and the upper part of the blowtorch. After heating a little, check whether the blowtorch is leaking.

3. Fire: When the alcohol in the beaker is nearly finished, turn the hand wheel 2 to the left and ignite the volatilized alcohol in the nozzle in the flame ring 4. At this time, the suction hose 6 of the halogen lamp emits With the sound of gas inhalation, you can start leak detection with a lamp.

4. Use: When testing, move the nozzle of the suction hose 6 close to the inspected place, and move slowly. If there is Freon gas leakage, it will decompose when it meets the flame. At this time, the orange-red flame will turn into green and the color of the flame. The change varies with the amount of Freon leakage, and the darker the color, the more serious the leakage of Freon.