Installation requirements of industrial water chiller

Installation Requirements of Industrial Water Chiller

All the Installation requirements of industrial water chiller you should notice to make sure the chilling unit can run as long as it can.

Industrial chillers can be divided into two categories according to the heat dissipation mode: 1. Water cooling units; 2. Air cooling units.

The water-cooled unit must be connected with the cooling tower and the inlet and outlet pipes of cooling water and chilled water. The cooling tower and cooling pump should be selected according to the refrigeration capacity and compression power, with the inlet pressure ≥ 1.5bar, and the diameter of the inlet and outlet pipe should be consistent with the diameter of the cooling water inlet and outlet pipe.

However, the air-cooled unit only needs to connect the chilled water inlet and outlet pipes and make-up water source. After the power supply is connected, the operation can be carried out. The ventilation should be smooth, and there should be no dust and debris around to avoid being inhaled into the unit.

1.The diameter of the water pipe

The diameter of the water pipe connection port reserved by the unit is standard size. When the remote transmission is adopted, a larger diameter water pipe must be used for connection. In any case, the diameter of the water pipe should not be smaller than the standard diameter of the connection port, otherwise, the pressure alarm will be given and the compressor and water pump will be damaged greatly.

2.Connecting The Water Pipe

When connecting the water pipe, the user should refer to the installation diagram to connect the pipeline, confirm the position of the inlet and outlet pipe, distinguish the cooling water pipe and the chilled water pipe.The wrong connection of the pipe will damage the unit.Only after ensuring the normal connection of the whole system can the system be started up and run.

3.With Connector or Flange

When the water pipe is connected to the unit, it must be connected with a connector or flange, so that it can be easily removed when necessary.

Important Tips If the water supply is insufficient or the suction (outlet) outlet is blocked, the system will not exhaust heat smoothly, and the exhaust pressure of the unit will increase, which will affect the use of the unit.

4.Connect a Hose

A section of hose is connected to the outlet and inlet of the water pipe to reduce vibration transmission.

5.Valves and Filter

If permitted, install valves on water pipes to effectively control water flow. It is suggested to install a filter at the water inlet to prevent sediment and debris.

6.Check Leakage Problem

Check the internal and external have leakage problem or not,when the water inlet/outlet valve of evaporator and condenser is fully opened.

7.Wrap With Insulation Material

The water pipe should be wrapped with enough insulation cotton to protect it from frost on the surface and keep the chilling water temperature.

8.Winter Protection Measures

In winter, when the unit stops operation, the water in the water pump and water pipe may freeze, causing damage to the unit and water pipe. In order to prevent icing, when the unit stops, the water pump can be effectively started. If there is still possibility of icing, all water in the water pipe will be discharged. If drainage is difficult, an anti icing mixture such as ethylene glycol or propanol can be used.

Note Do not use salt anti icing mixture because of its strong corrosion property, which will cause damage to the unit.

9.By-pass Pipe

When installing the unit, please install the bypass pipe in the chilled water pipeline device. When the chilled water outlet valve is turned down, the bypass pipe valve can be adjusted to relieve the pump pressure and prevent the evaporator from freezing.

Warning It is forbidden to change the chilled water bypass pipe into a water pipe, otherwise, when the chilled water outlet valve is fully closed, the freezing pump will be damaged due to the high pressure at the outlet side, and the evaporator may be frozen.

10.Check Before Running

When the air-cooled chiller is started up and running, please pay attention to whether the water pump and exhaust fan turn normally before starting up and running.

11.High/Low Pressure

When the unit is running, please pay attention to the pressure display content: water cooled high pressure is (1.2 ~ 1.8MPa), low pressure is (0.3 ~ 0.6MPa); air cooled high pressure is (1.2 ~ 1.9mpa), low pressure is (0.3 ~ 0.6MPa). If the value is too high or too low, it means that the fault is a precursor or improper use. Please check it in time or inform the manufacturer to deal with it. Maintenance in advance is better than repair afterwards.

12.Cooling Water and Scale

To ensure that the condenser is not easy to scale and can be used for a long time, please use softened water (or tap water) as cooling water. If a cooling tower is used, the cooling water should be replaced regularly.

13.Regular Cleanning

The condenser and evaporator of the chiller usually need to be cleaned after a period of use (the cleaning cycle depends on the surrounding environment and water quality).

14.Temperature Setting

It is better to control the outlet water temperature of the unit at 7 ~ 12 ℃. When adjusting the temperature controller, please note that low temperature will cause some protection devices of the unit to fail.

15.Electric Control Elements and Protection Devices

All electric control elements and protection devices of the unit have been strictly tested by the manufacturer. Users are not allowed to change or remove them during inspection and maintenance. Forced operation without protection will cause great damage to the unit.

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Characteristics and advantages of different types of chillers

Characteristics and advantages of
different types Water Chillers

1. Box type water cooling chiller:

It has compact structure, with water tank and water pump inside. It is suitable for equipment with closed external pipeline.

The water-cooled model needs to be equipped with cooling water pump and cooling tower before it can be put into use.

2. Box type air-cooled chiller:

In addition to all the performance of box type, there is no need to add cooling water pump and cooling tower.

It is easy to install and operate. It is suitable for small flexible production equipment and workshop where cooling tower is installed unconditionally.

3. Water cooled open type water chiller:

It is not equipped with chilled water tank and water pump, but can be connected with water pump and water tank as required.

The volume of water tank and pump head are not limited, which can better meet the needs of different industrial equipment.

Open structure, easy to clean and maintain.

4. Water cooled or air-cooled low-temperature chillers:

Antifreeze solution (ethylene glycol or low-temperature brine) should be used as the carrier refrigerant, and the outlet temperature can be below zero.

It includes three series: high temperature (water outlet temperature: 3 ℃ – 5 ℃), medium temperature (water outlet temperature: – 5 ℃ – 10 ℃), and low temperature (water outlet temperature – 15 ℃), which can meet the low temperature requirements of various equipment and can also be customized according to the special requirements of customers.

5. Water cooled screw type:

Adopted with shell and tube condenser and shell and tube condenser , which have the characteristics of simple structure, stable heat exchange, long-lasting efficiency and convenient maintenance.

The unit has reliable safety protection devices, including: high and low voltage protector, exhaust overheat protector, compressor motor overheat protector, overload current protector, antifreeze temperature protector, water flow protector, emergency stop switch, temperature sensitive fusible bolt, safety valve, etc.

It is recognized as the most ideal structure composition of central refrigeration host.

6. Corrosion resistant titanium tube type:

Special titanium evaporator can avoid acid liquid corrosion, and can directly freeze electroplating, oxidation liquid, sea water, salt water and other corrosive liquids.

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Preparation Before Installation a Water Chiller

Find it hard or complicate to install a water chiller? Don’t know how to pick up a right place to settle your new water chiller?

Actually , you just need to do below steps one by one.Then everything will become very simple.

Let’s do it！

Check the components are complete

Before installation, check whether the components of the unit are complete.

The Right Cooling water tower and Cooling water pump

Select the appropriate cooling tower (air cooling type does not need cooling tower), and the capacity of cooling water pump should match the model. Please install according to the size of the body pipe, do not reduce the size of the cooling pipe, in order to avoid causing high pressure overload, affecting the cooling effect and increasing power consumption.

Correct handling methods

Correct handling method: use stacker, crane and drum. Do not drag the machine by force. Since the equipment has been debugged before leaving the factory, the system has pressure, so strong vibration is not allowed during loading and unloading, handling and installation. It is not allowed to invert, tilt or side set the unit during handling.

The right installation location requested:

The water chiller is an indoor device. If the user needs to place the equipment outdoors, it should be well protected from rain and sun, and should not be directly exposed to the outside.

The installation location should be a place with stable foundation, open surroundings, ventilation, avoiding corrosion and pollution, and convenient for installation and maintenance.

Since the unit itself will generate heat, it is necessary to avoid high temperature area around the unit during installation to meet the effective heat dissipation of the equipment, especially to ensure that the condenser of air-cooled chiller is well ventilated.

Avoid placing high-power inverter, welding machine and other equipment with interference sources near the equipment, and the installation space of the unit shall not be less than the size shown in the figure below. The figure shows the minimum installation space of the unit (unit: mm).

Water-cooled water chiller (Box type or Open type)

Air-cooled water chiller

The unit without caster at the bottom

The unit without caster at the bottom must be placed on the horizontal concrete base, and there must be no less than 3mm thick damping rubber pad between the unit and the concrete base

It is better to install large air-cooled units in outdoor space.

On the other hand, it can reduce heat emission. When placing, please support the bottom of the unit with bracket to make it ventilate smoothly and prevent rusting.

Note:

(1) the power load and grounding part shall be constructed in accordance with relevant laws and regulations

(2) The chilled water pipes of newly installed chillers must be covered with insulation layer.

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The Application of APT industry chillers

The Application of refrigeration technology in 2021

With the development of refrigeration industry, the application of refrigeration technology is becoming more and more extensive. Now it has penetrated into all fields of people’s life and production activities, from daily clothing, food, housing, transportation, to cutting-edge science and technology can not do without refrigeration technology.

1. Food Engineering

In order to prolong and improve the quality, economic life and value of perishable food, it is necessary to maintain a stable low temperature environment in the whole circulation process of perishable food from purchase or fishing, processing, storage, transportation to sales. This requires a variety of refrigeration facilities, such as cold processing equipment, refrigerated warehouses, refrigerated transport vehicles or ships, refrigerated sales counters and so on.

2. Air conditioning engineering

Air conditioning engineering is a wide application field of refrigeration technology. The temperature, humidity and cleanliness of the environment are required to be controlled in different degrees in optical instruments, precision measuring tools, textile workshops and computer rooms; comfortable air conditioning systems are also required for public buildings such as gymnasiums, great halls, hotels and other public buildings, cars, airplanes, and large buses.

3. Mechanical and electronic industry

20HP industrial water-cooled chiller

Precision machine tool oil pressure system uses refrigeration to control the oil temperature, which can stabilize the oil film stiffness and make the machine work normally. Low temperature treatment of steel can improve the properties of steel, improve the hardness and strength of steel, and prolong the service life of workpiece. Multi channel communication, radar, satellite ground station and other electronic equipment also need to work in low temperature.

Swimming pool water chiller 1HP-3HP

Plasma, vaccines and some special drugs need to be preserved at low temperature. Low temperature anesthesia, low temperature surgery and cold compress cooling of patients with high fever also need refrigeration technology.

4. National defense industry and modern science

It is also necessary to simulate the performance

of these weapons and vehicles in the cold environment. Artificial rainfall also needs cooling.

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Water Chiller knowledge