Reliable Modular Chiller Manufactuer

Modular Chiller Manufacturer in China| GESON Chiller

If you are new to chiller systems, you might be curious to know what a modular chiller is for. There are several types of chiller systems that it can be confusing to choose the right system for different applications. In this guide, you will discover one such type – modular chiller systems. By the end of this guide, you will learn more about its uses and how it works so you can make an informed decision.

Modular Chiller Manufacturers

What Is A Modular Chiller?

A modular chiller is a type of industrial water chiller cooling system that is composed of multiple chillers.

These different chillers are grouped together in order to create an expandable chiller system.

Each of the individual chillers that make up the module work as a single unit – they have an evaporator and condenser.

You may be able to group together a total of up to 12 chillers (or equivalent to 24 scroll compressors) to build modular chiller systems.

You may control each of the modules using a remote control system.

This system of controls makes it easier to keep track of the entire chiller system’s performance for ease of troubleshooting later on.

Depending on where you get your modular air cooled chillers from, you can buy it individually or as part of a package.

Modular chiller systems, though, is capable of delivering a complete cooling system that can be used to operate a plant, warehouse, or any building that requires cooling.

It has emerged as a cost-effective solution for mass-produced chiller systems.

Instead of obtaining multiple chiller systems that work together, it is more affordable to purchase just one system.

Modular Air Cooled Chillers

As modular chillers manufacturers, we are proud to bring you a selection of our modular chiller systems for you to choose from. This small yet packaged unit is a great alternative to traditional chiller systems, which provides more flexibility in terms of its industrial application.

We are committed to the design and manufacture of efficient chiller modules that are reliable, efficient, serviceable, and cost-effective. Our available models of chiller modules range in cooling capacity ranging from 15 tons to as much as 300 tons.

Since these are chiller modules, they can be easily expanded to meet your unique requirements, or if your needs change. This is how our range of chiller modules is able to provide efficiency and optimum performance to your entire system.

As one of the top modular chillers manufacturers in China, we can provide you with different options in terms of configuration. We can provide air cooled chillers modular for cooling only function. We also have water cooled chiller modules, if that is what you prefer. Both of these types of chiller units are designed for cooling purposes only.

If you need other functions, we have chiller modules for heat pump or heat recovery. They are available in air cooled chillers and water cooled chillers variants.

Each of the units can be equipped with separate module electrical feed or have dual independent refrigeration circuits. This will ensure undisrupted operation even when undergoing maintenance of the modular units. This is how we can deliver 24/7 stable operation for our modular chillers units to offer little to no disruption to your industrial processes.

No matter what type of chiller modules unit you choose, we take pride in offering efficient solutions. The components are chosen to deliver unparalleled efficiency within a modular platform. You can reach out to our team if you are interested to learn about custom modular chillers unit solutions to match your specific requirements.

What are the types of air-cooled modular units?

Air-cooled modular units have single cooling type and heat pump type,

The heat pump type air cooled chillers has cooling and heating functions, which can supply both cooling and heating.

It can cool down in summer and heat in winter.

Better than heating boilers and heating networks,

Therefore, the air-cooled heat pump unit can provide a year-round air conditioning design.

What is Air-cooled modular unit air conditioning system?

The unit can be used in combination with fan coils or cabinets, ceiling-mounted air handlers, and fresh air cooled chillers units to form a semi-centralized air conditioning system.

Modular Chiller System

What are the advantages of air-cooled modular units?

The air cooled chillers air-conditioning system has many advantages of the fan-coil system:

Flexible layout, beautiful appearance,

Save building space and convenient adjustment,

It can be stopped and opened alone without affecting other rooms, and the operating noise is low.

Modular Chillers

Saving water

The air cooled chillers saves the cooling water system,

No need for cooling towers, water pumps, boilers, and corresponding piping systems, and many other accessories,

Simple system structure

Save space,

Convenient maintenance and management and save energy,

At the same time, water resources are saved.

Modular Chiller Plant

Save energy

The initial investment of the air cooled chillers is slightly higher.

But the annual operating cost is low,

The heat during heating is taken directly from outdoor air,

Can save energy.

The construction cost of the computer room is the least.

The maintenance cost is about half the cost of Water cooled Chiller System or boilers.

Because the water cooled chillers system need work with the cooling towers.

It is the most economical and simple model to maintain and repair among all cold (hot) water air-conditioning equipment products.

The unit can be placed directly on the roof, podium platform, or level ground,

No need to build a computer room, boiler room, safe and clean,

Advanced design

Designed and manufactured in accordance with national industry standards

Using world-famous brand scroll compressors, fans, refrigerant system control components and computer control devices,

Through our professional R&D technology, reasonable and advanced system matching and structural design,

The unit can operate efficiently in a low temperature environment.

Adapt to climatic conditions above -10°C.

Products are widely used in areas requiring annual air conditioning

And some areas lacking water resources.

At the same time, it is especially suitable for some areas where the temperature in winter is relatively low and there is no boiler or other

Modular Air Cooled Chillers

How Does A Modular Chillers Work?

Modular air cooled chillers is a packaged system of smaller chiller modules that form a larger machine. The cooled chillers are part of parallel or series that are managed through a central control system.

The system functions to partialize the cooling capacity for each module in order to maintain the required temperature. This makes the whole modular chiller system energy-efficient.

What Are Modular Chillers Types?

In Modular Chiller Plant Manufacturers. There are two types of chiller modules available to choose from water cooled chillers and air cooled chillers. Regardless of the type of modular chiller plants, though, they both consist of the same central parts. They also have scroll compressors, condenser, expansion device, and evaporator.

The two cooled chillers modules types refer to the major categories, though. There are smaller subcategories for each of them based on the type of scroll compressors used: screw, scroll compressors, and centrifugal.

Modular Chiller Plant Manufacturer

What Is The Purpose Of Chiller Modules?

The main purpose of chiller modules is to expand the cooling capacity of a traditional HVAC system. It is composed of one or two modules that work together in order to efficiently cool a building or plant. Since there are several modules that operate as one, it takes less amount of work for the system to generate the desired cooling effect (especially when compared to a standalone chiller).

Figure 2 – Modular Chiller Diagram

What Are The Benefits Of Using Modular Chillers?

Using modular chillers offer a ton of benefits, whether it is used industrially or commercially. modular chillers are smaller in size compared to a standard chiller so this makes them the ideal choice for retrofitting an old air conditioning unit. It can be easily fitted into your existing HVAC system versus when you have to acquire a standard chiller.

Obtaining modular chillers is also more practical since you have a few of them. In the event that one of the modules malfunctions, you won’t have to worry about incapacitating your system because there are other modules available to use. This is crucial in manufacturing and industrial plants that rely on chillers to operate so you can have less down time.

Each of the modules has its own dedicated power, which ensures constant cooling for your industrial or manufacturing plant as long as you have a modular chiller plants on standby. The energy-efficiency of this type of chiller is also another distinct advantage. They help to reduce the amount of energy you use so you can reduce the negative environmental impacts.

The flexibility of a modular chiller HVAC also enables you to use it for more commercial or industrial processes. You can use it to cool or heat your system. This is possible because this type of chiller can be adapted for heat pumps.

How Do You Install Modular Chillers?

To install your modular chillers, you need to work with an experienced technician who has expertise with this type of installation. You have to decide between air cooled chillers or water-cooled modular chillers HVAC. In some cases, you must work together with the chiller supplier to retrofit the system to match your design or build project.

Video: Modular Chiller Plant Assembly Sequence

How Efficient Are Modular Chillers?

Modular chillers are one of the most recommended types of chiller systems right now because of its high efficiency rate. First and foremost, the type of refrigerant used is environmentally friendly so it causes less negative environmental impact.

It also uses up less amount of refrigerant than a conventional chiller. The low consumption of the refrigerant gives you more control on how and when you cool a building or plant. This reduces the total amount of energy consumed or wasted in the process. This makes it easier to match the cooling load with the cooling requirement for a building at any given time.

Why Do You Need Modular Chiller Cooling System?

A modular chillers can serve many purposes and can provide cooling for a wide range of applications. This type of cooling system is preferred because it can overcome many of the common challenges faced by plant-wide cooling systems.

First and foremost, modular chillers are easily expandable as long as it is within the maximum capacity of your pumping system. When you install the system, just make sure you allot adequate space for future expansion so you can add new modules in the future. This will make it easier to incorporate new chiller modules in the future without causing any interruption to the current system.

The ability to match the cooling capacity of your cooling load is another advantage that you can get when you use modular chillers. With this solution, you could easily prevent short cycling on the system in the future, particularly with the compressor. It allows you to maintain a constant temperature level that is needed within your plant or building.

There is also a distinct advantage offered by modular chiller systems that enable you to turn off one compressor. This would be applicable on the events wherein there is less cooling load needed within the plant.

The energy efficiency of modular chillers are also worth noting as one of its advantages. When the cooling load is reduced and you shut down one of the scroll compressors, you could save a ton of energy. On the other hand, if your scroll compressors had to double time in order to meet the cooling load, it uses up more energy than usual.

Also, the cost of installation for modular chillers are less expensive than if you were to obtain two separate chiller systems. The initial cost of installation is more expensive with modular chillers; however, the long-term savings with its operation is more than a worthy bargain.

Take note of the pointers above so you can determine if a traditional chiller system would work for your needs, or if it is time to switch to modular chiller system instead.

Can You Use Modular Chillers For Air Conditioning Systems?

Using the modular chillers as a replacement for traditional air conditioning systems is something that you have to analyze carefully. This is not an easy decision to make, especially when you talk about cooling older buildings or commercial spaces. Most of the older cooling systems were chosen based on the size of the building itself. However, cooling load requirements change over time based on the number of people that are in the building and the purpose of the space.

Replacing current HVAC systems with chiller modulars are beneficial in terms of energy- and cooling efficiency. No matter what type of building requires cooling, you can expect better-operating efficiencies.

Before replacing your current air conditioning systems with modular chillers, take note of three important factors. First, you have to determine the cooling load and the variables needed for cooling each building (such as the number of occupants, size of the building, type of equipment, and more).

The next consideration is accessibility, which can impact the installation process. It is important to analyze the site for potential physical site constraints. And finally, calculate the cooling load variation for the building or site and the potential for future expansions. The system must have appropriate cooling variations so that the settings can be adjusted based on a need-basis.

What Are Common Uses For Modular Chiller?

There are several buildings or facilities that could potentially benefit from the use of modular chiller plants. This type of chiller system is widely used in health facilities such as hospitals, clinics, and retirement clinics. These facilities are known to use equipment that generates heat, which makes proper cooling efficient.

This chiller system is also suited for use on historical buildings such as museums, state capitol buildings, and churches. Since these are older buildings, they pose a challenge with the use of conventional chillers. Modular air cooled chillers is the most suitable choice because it can provide flexible cooling performance based on the cooling load requirements.

Other examples of buildings that can benefit from the use of this chiller include banks, government buildings, office buildings, courts, and many more. They also provide a suitable cooling solution for entertainment venues such as hotels, casinos, stadiums, bars, and restaurants. In addition, a modular chillers can be used in universities and colleges, laboratories, and data centers.

What Are Industrial Uses For Modular Chiller?

It is very important in an industrial setting to choose a chiller system that matches the load requirement for the said purpose. A modular chilling system is the perfect answer for industrial uses because it is flexible, cost-efficient, and energy-efficient.

There are many applications for a modular air cooled chillers in the industrial setting such as in plastic manufacturing, rubber, plating, die casting, metal working, cosmetic, pharmaceutical, chemical, petrochemical, and printing industries. These are just some examples of the industries that utilize this particular chiller technology to achieve the desired level of temperature.

The high EER or energy efficiency rating delivered by modular chilling systems ensures that it can deliver adequate cooling performance even when there is expansion. At the same time, it ensures that you can enjoy ongoing energy savings without compromising on performance.

Is Modular Chiller Cost-Efficient?

Yes. modular chillers plants is the preferred system for many commercial and industrial processes because it is cost-efficient. You can save on the cost of installation, operation, and maintenance with this type of chiller.

Modular chillers can be installed on any part of the building – whether on the rooftop or basement. There is no need for a renovation to install the system because it has a small footprint. It can easily fit into most hallways, doors, and entrances and won’t require any special moving equipment.

The modular air cooled chillers is also efficient in terms of operational cost. This type of chiller is more efficient in comparison to the centrifugal chiller (either in full or partial load conditions). The type of refrigerant used in modular chillers are more environmental-friendly; plus, it also consumes only 1/5 of the refrigerant versus the conventional chillers.

The type of refrigerant used and the energy efficiency of operating modular chillers combine to making them good for the environment. There is less energy used and means lower costs involved to operate the system.

In terms of maintenance and repair, modular chiller plants have minimum requirements. The parts of this chiller system are easily available in most local shops so they won’t cost much to acquire. In general, the modules work in such a way that if there is a defective piece, you would only need to replace that instead of fixing the whole system. This is not only cost-efficient but also causes less disruption.

Modular chillers manufacturers air conditioning water system

The cooling water system of modular chillers manufacturers adopts a closed mechanical circulation system, and the air cooled chillers and chilled water pump are installed on the roof.
Choose two chilled water pumps, which are turned on separately when the system is running,
To meet the needs of water system circulation, one is prepared and one is used.
Six, modular chillers manufacturers air conditioning system
Using horizontal concealed fan coil system,
The air supply method is side air supply and top return air.
Seven, modular chillers manufacturers air conditioning duct
The air supply ducts of modular chillers manufacturers are all galvanized steel ducts,
Manufactured in accordance with the construction and acceptance specification of ventilation and air cooled chillers engineering GB50243-2002.

Insulation

The air supply ducts of modular chillers manufacturers need to be insulated,
The insulation material is made of centrifugal glass wool board with reinforced aluminum foil (28Kg/m3),
The thickness of the insulation layer is 30mm.
Modular chillers manufacturers air conditioning chilled water pipes are galvanized steel pipes or seamless steel pipes, using a centrifugal glass shell (48Kg/m3) with reinforced aluminum foil.
The thickness of the insulation layer is 50mm.
The air conditioner condensate pipe is UPVC blue water supply pipe,
Use a rubber-plastic tube shell for heat preservation, 10mm thick.

Vibration reduction and sound insulation
In order to meet the requirements for noise control,
All equipment that generates vibration requires vibration reduction treatment, and the return air outlet on the air conditioner of modular chillers manufacturers is equipped with a flexible pipe.
The water supply and return water interface are equipped with rubber soft joints.
The cooling water pump adopts a low-noise type and performs the necessary noise reduction treatment.

Installation and construction instructions for the air-conditioning system of the modular chillers

1. Equipment

All modular chillers equipment foundations should wait for the goods to arrive on-site,

And after correcting the size of the anchor bolts,

Start to cooperate with the construction drawing installation;

If part of the equipment foundation cannot be made, it can be decided on-site,

All chillers and air-conditioning units must be equipped with rubber damping pads;

The water pump is installed on the roof and must have good shock absorption measures;

Flexible joints are used on the inlet and outlet pipes of chillers, air conditioners, and water pumps, which are configured according to the diameter of the outlet pipe.

2. Construction requirements for the air cooled chillers of the air-conditioning system of the modular chillers
3. The air duct material is made of galvanized steel sheet.
4. Both sides of the duct at the settlement joint or deformation joint,

At the junction of the inlet and outlet of the air conditioning unit,

A soft connection with a length of 150~200mm should be set,

The interface of the soft connection should be firm and tight, and it is forbidden to change the diameter at the soft connection.

4. The detachable interface on the air duct shall not be installed in the wall and floor.
5. All horizontal or vertical air ducts must be equipped with necessary supports, hangers or brackets,

Its structure is selected by the installation unit according to the site conditions under the principle of ensuring firmness and reliability.

6. The duct branch, hanger, or bracket should be set outside the insulation layer,

And inlay stow wood between the support, hanger, or bracket and the duct,

At the same time, avoid installing supports, hangers, or brackets at flanges, regulating valves, and other parts.

Three, modular chillers air cooled chillers water system construction requirements

1. The cooling water pipes are selected as follows:

DN≤40——Hot-dip galvanized steel pipe;

DN65~DN250——hot-rolled seamless steel pipe;

2. At the lowest point in the pipeline system, a DN50 gate valve or a detachable plug should be equipped.

At the highest point, an automatic exhaust valve of DN20 should be configured.

3. A water seal should be installed at the condensate pipe joint of the air cooled chillers.

The height of the water seal is 80~100mm when the air conditioning unit is installed.

Condensate branch pipe> 1%, condensate horizontal main pipe> 0.3%, slope to the floor drain.

The minimum pipe diameter of the condensate branch pipe is DN32.

4. The specific form and setting position of the pipeline movable support, crane and bracket,

It is determined by the installation unit according to the site conditions.

The pipe supports, hangers, and brackets must be installed outside the insulation layer,

Skids should be inlaid at the places passing through the supports, hangers, and brackets to avoid cold bridges.

5. When the cold water pipe passes through the floor and the wall, the insulation layer cannot be interrupted, and the casing should be embedded.

The size of the casing should be one size larger than the size of the water pipe after insulation.

The middle is filled with loose non-combustible materials.

6. After the installation of the pipeline is completed, a hydraulic test should be carried out.

The test pressure is carried out in accordance with the construction and acceptance code of ventilation and air conditioning engineering GB50243-2002.

7. After the pressure test is qualified, the system should be repeatedly flushed.

Until the discharge water does not contain sediment, iron filings, and other sundries,

And when the water is not turbid, it is qualified.

Before rinsing, the filter screen of the filter should be removed first.

Install it after flushing. When the pipeline is flushed, the water flow must not pass through all the equipment.

GESON modular air-cooled cold (hot) water modular chiller unit

Imported scroll compressors:
It adopts the original imported flexible scroll compressors fully enclosed compressor produced by COPELAND, a world-famous brand in the United States,
High efficiency, stable operation, strong safety and reliability.

Double circuit independent system:
The unit adopts a dual-compressor dual-circuit independent system, which can work independently,
When one circuit fails, it can be repaired separately without affecting the normal operation of the other circuit

Compressors start sequentially one by one:
The unit is composed of multiple modules, and the main module controller automatically controls each compressor to start sequentially.

Advanced control, high efficiency and energy saving:
Using intelligent control, fully automatic control unit operation.
The advanced computer control system not only improves the control accuracy and reliability,
And it can realize multi-level energy adjustment and uniform load distribution among unit modules,
Keep the output of the unit reasonably matched with the load and save energy.

When combined by 8 unit modules, according to the size of the load,
The unit can actually adjust 16 levels of energy from 4.54 to 100%,
Keep the unit in economic operation.

Remote monitoring function:
The new controller has a remote monitoring function, and the controller display panel has a monitoring interface,
The user can connect to the indoor central control computer within 1000 meters through this interface,
The central control computer can be connected to up to five modular units,
Thus, the actual man-machine can be separated and remotely monitored, which brings great convenience to users.

Diversified portfolio:
The unit is composed of multiple unit modules.
It can combine multiple unit modules of the same model,
It can also combine multiple unit modules of different types.

Flexible scroll compressors:
Compared with other types of compressors in the same level of cooling capacity,
With fewer moving parts and smaller rotating torque,
The advantages of lower noise and vibration, higher reliability and efficiency.

Strong protection:
The advanced microcomputer control system has complete safety protection functions,
It has a powerful fault self-diagnosis function.

High reliability:
Using famous and high-quality refrigeration accessories, carefully designed and manufactured,
With the design of multiple refrigeration systems, the reliability of the unit operation is improved.

small volume:
Adopt modular design, small size, compact structure,
The body is light, easy to transport, and flexible to install.

Easy to operate:
The controller is used for operation, which is easy to control and maintain.
Low noise: low running noise, low vibration, suitable for various types of projects.

Excellent performance: fast cooling speed,
The low-temperature heating performance is stable in winter, and the intelligent defrosting is rapid and thorough.

Low maintenance cost: The unique structure of the unit makes it easy to maintain and repair, and the maintenance cost is low.

As modular chillers manufacturers, we are proud to bring you a selection of our modular chiller systems for you to choose from. This small yet packaged unit is a great alternative to traditional chiller systems, which provides more flexibility in terms of its industrial application.

We are committed to the design and manufacture of efficient modular chillers that are reliable, efficient, serviceable, and cost-effective. Our available models of modular chillers range in cooling capacity ranging from 15 tons to as much as 300 tons.

Since these are modular units, they can be easily expanded to meet your unique requirements, or if your needs change. This is how our range of modular chillers is able to provide efficiency and optimum performance to your entire system.

As one of the top modular chillers manufacturers in China, we can provide you with different options in terms of configuration. We can provide air cooled modular chillers cooling solution for cooling the only function. We also have water cooled chillers cooling solution, if that is what you prefer. Both of these types of chiller units are designed for cooling purposes only.

If you need other functions, we have modular chillers cooling solution for heat pumps or heat recovery. They are available in modular air cooled chillers and water cooled chillers variants.

Each of the units can be equipped with a separate module electrical feed or have dual independent refrigeration circuits. This will ensure undisrupted operation even when undergoing maintenance of the modular units. This is how we can deliver 24/7 stable operation for our modular chillers cooling solution to offer little to no disruption to your industrial processes.

No matter what type of modular chiller cooling solution you choose, we take pride in offering efficient solutions. The components are chosen to deliver unparalleled efficiency within a modular platform. You can reach out to our team if you are interested to learn about custom modular chillers cooling solution to match your specific requirements.

Operation rules for the use and maintenance of air-cooled modular units

In order to establish an air-cooled modular unit system use, maintenance, and maintenance operating procedures to guide standardized operations.

The air-cooled modular unit system, whose function is to provide cold and hot water for the air-conditioning unit,

Ensure that the temperature in the workshop meets the requirements.

Preparation for booting

1) Check whether all the valves that should be opened in the system have been opened,

The valves that should be closed are all closed

2) Check whether the expansion tank and water supplement device are sensitive;

Exhaust the air in the water pipe. Before turning on the water pump, open the air release valve to see if there is any water flowing out.

If not, it means that the air has not been exhausted, and it is not allowed to turn on the water pump at this time. The expansion tank and water replenishment system should be checked, and the exhaust work should be done properly.

The water pump can only be turned on after confirming that the pipeline is filled with water, and absolutely avoid running in the state of water shortage.

2. Start and stop

2.1 Turn on the power supply of the air-cooled module unit and the power supply of the water pump.

2.2 Turn on the water pump and observe the outlet pressure, which should be above 0.2MPa.

Otherwise, you need to find out the reason and do not turn on the module unit.

2.3 Press the unit start key, the start key is on the remote controller, and the module unit will operate normally.

Press the stop button to stop,

Note: When starting up, the water pump should be turned on first, and then the modular unit. The opposite is true when shutting down.

2.4 matters needing attention

When the fault light on the remote controller of the unit is on, it indicates that the unit is abnormal.

According to the fault reason displayed by the controller,

Identify the fault and eliminate it before clearing the fault,

After clearing, the controller will automatically detect and start the corresponding system.

All protection switches have been set properly before leaving the factory, please do not adjust by yourself.

The parameters on the remote controller of the unit have been set properly and cannot be modified arbitrarily.

If you need to make changes, you should report to the superior.

Every 4 hours, the operation of the unit should be recorded.

Maintenance

A water filter is installed outside the modular unit. Please clean the water filter regularly to ensure that the water quality in the unit system is clean.

To avoid damage to the unit due to dirty filters.

The evaporator also needs to be cleaned regularly after a period of time,

Generally, a weak acid solution (5% phosphoric acid, or 5% oxalic acid) can be used,

The cleaning liquid is pumped into the heat exchanger,

In order to achieve a better cleaning effect, the circulation flow rate of the acid solution should be 1.5 times the usual water flow rate, and it is best to use the reverse process of the water circulation for backflushing.

After cleaning, use a lot of water to clean the remaining acid solution.

Avoid long-term damage to the equipment in the water system.

The installation environment of the unit should be kept clean and well-ventilated.

The fin heat exchanger should be cleaned regularly (1-2 months),

Maintain a good heat exchange effect and save the operating energy consumption of the modular unit.

Frequently check the water supply of the water system and whether the exhaust device of the water system is operating normally,

Avoid air entering the system, thereby reducing the water circulation, or the water circulation encountering resistance,

This affects the cooling and heating effects of the unit, and the reliability of the unit.

Frequently check whether the power supply of the unit and the wiring of the electrical system are firm,

Whether the electrical components are operating abnormally,

In case of abnormality, repair and replace in time, and regularly check whether the grounding wire of the unit is reliable.

After the unit has finished an operating cycle,

If the shutdown time is long, drain the water in the unit pipeline and cut off the power supply.

Before starting again, fill the system with water and conduct a comprehensive inspection of the unit.

Power on the unit to warm up for more than 6 hours and confirm that everything is normal before it can be turned on.

Regularly check the working conditions of the various components of the unit,

Check whether the working pressure of the unit’s refrigeration system is normal.

Check whether there is oil stains at the pipe joints and inflation valve in the unit,

Ensure that the chiller does not leak.

If you need to add refrigerant, it must be operated by professionals.

Failure analysis and maintenance

The unit may malfunction to varying degrees during use,

The following table is some common faults and their treatment methods,

The user needs to contact the dealer or branch when encountering a unit failure.

Do not try to repair it yourself.

Failure phenomenon

The compressor cannot start normally and there is no buzzing sound

Possible Causes

1. The main controller power supply and communication data line failure
2. The alarm indicator of the main controller is on
3. The unit control is in preheating state
4. The data setting in the main controller is wrong

Solution

1. Turn on the power and check if the communication light is on
2. Check what kind of failure, contact our company service staff
3. Under normal conditions, prepare for the protection of the unit
4. Read the user manual and reset the parameters

The compressor can start, but it starts and stops frequently

Possible Causes

1. Too much or insufficient refrigerant, causing the discharge pressure to be too high or the suction pressure to be too low, the pressure switch will act
2. The evaporator is frosted, the water temperature drops quickly and then rises quickly, the water circulation is poor or the load at the end of the room is too small

3.The temperature control cycle value of the main controller is too small.

Solution

1. Determine whether the refrigerant is suitable, if the refrigerant is more, it will be released from the exhaust port, and if it is insufficient, it will be repaired and supplemented.
2. If the water flow is not enough, check whether the waterway is unobstructed and the circuit is short-circuited; the end load is too small, add an energy storage water tank
3. Modify the parameters under the guidance of our service staff

The compressor is noisy

Possible Causes

1. The phase sequence of the compressor power supply is wrong
2. The liquid refrigerant returns to the compressor
3. The internal parts of the compressor are broken

Solution

1. Check the main power line and compressor inlet line
2. Check whether the expansion valve is malfunctioning, and whether the temperature sensing bulb is disconnected from the suction pipe
3. Dismantle or replace the compressor

Air conditioning refrigeration capacity is low

Possible Causes

1. Insufficient refrigerant, insufficient cooling capacity, and low evaporation temperature
2. Poor insulation of water system
3. Poor heat dissipation of the unit condenser
4. Improper adjustment of expansion valve
5. The filter is clogged

Solution

1. Check for leaks, repair leaks and add enough refrigerant
2. Strengthen the insulation of pipelines and expansion tanks
3. Clean the condenser to improve the condensing conditions
4. Adjust the expansion valve
5. Update the filter

Frosting of compressor suction pipe

Possible Causes

1. The flow of chilled water is too small
2. The waterway is blocked or the air is not discharged

Solution

1. Check whether the pump motor matches
2. Repair the waterway, clear the blockage, or release the air

Condensing pressure is too high

Possible Causes

1. Too much refrigerant
2. High ambient temperature and poor ventilation of the unit
3. Refrigerant, non-condensable gas with air in the system

Solution

1. Drain excess refrigerant
2. Eliminate influencing factors and make the condensing conditions good
3. Exhaust gas or non-condensable gas from the exhaust port

Condensing pressure is too low

Possible Causes

1. Insufficient refrigerant
2. There is a problem with the compressor valve and the efficiency is reduced

Solution

1. Identify leaks, repair, and make up refrigerant
2. Replace the compressor

Inspiratory pressure is too high

Possible Causes

1. Too much refrigerant
2. The return water temperature is high and the heat load is too large
3. Expansion valve opening is too large
4. Four-way valve leakage

Solution

1. Drain excess refrigerant
2. Reduce the amount of chilled water to reduce the heat load
3. Adjust the expansion valve
4. Replace the four-way valve

The suction pressure is too low, and the unit is frequently under low pressure protection

Possible Causes

1. Insufficient refrigerant
2. Low return water temperature, failure of indoor terminal equipment
3. The expansion valve opening is too small or blocked
4. The capillary tube of the expansion valve bulb is broken

Solution

1. Find out the leak and replenish the refrigerant after repair
2. Repair the terminal equipment and clear the waterway
3. Adjust the expansion valve
4. Replace the expansion valve

The air conditioner is cooling normally but not heating

Possible Causes

1. The principle of the air conditioner working condition in the main controller is wrong
2. The four-way valve is disconnected and loose, or the coil is burned out or stuck
3. The temperature is too low and the fin heat exchanger is frosted

Solution

1. Check the working condition setting in the main controller
2. Overhaul the four-way reversing solution valve
3. Defrost, find out the reason and install auxiliary heat source

When heating, the compressor continuously rotates

Possible Causes

1. The temperature probe of the water temperature controller is damaged
2. The temperature is set too high and the water temperature cannot reach the set value
3. Low heating efficiency of the system

Solution

1. Replace the thermostat
2. Reset the hot water temperature (45℃ is appropriate)
3. The ambient temperature is too low, an auxiliary heat source needs to be added

The main controller starts, the water pump does not run

Possible Causes

1. The power supply of the power line of the water pump in the user control cabinet is missing
2. The water pump motor is burned out and the bearing is damaged

Solution

1. Find out the line fault
2. Replace the water pump motor. Bearing and shaft seal

Note: The following conditions are normal

1. During the operation of the unit,

When the temperature reaches the user set value,

The unit will automatically stop running,

After the temperature rises,

The unit will automatically restart according to the operating mode set by the user

2. When the outdoor temperature is low,

When the humidity is relatively high,

The outdoor heat exchanger may be frosted during the operation of the unit,

To ensure the normal operation of the equipment,

The unit microcomputer controller will judge according to time and temperature,

Automatically enter the defrosting process,

After defrosting, the unit will automatically restart according to the operating mode set by the user.