Then, theyll submit to you a contract that may last 3-5 years or even 10 years depending on the current performance of your system. Aborption Chillers And There are three controlled parameters, as follows: Condenser outlet pressure is not required to control; Why control these three variables, it is very simple, the principle is the same as the evaporation experiment. chiller condenser fans Availability: Glycol is widely available and can be easily purchased, making it a convenient choice for many applications. 2. AHUs and FCUs dehumidify by condensing the water vapor in the air. I enjoy working on air conditioners and ventilation fans because Malaysia is a very hot country. Welcome, I hope you can find your solutions here. Increasing the flow rate of cooling medium can reduce the condensation temperature a little. Lets take a brief look at the curve of condenser pressure versus condenser temperature for R410: From the graph can be seen very simple, condenser temperature and condenser pressure are proportional to change, condenser pressure and thetemperature is corresponding. A brine chiller is a cooling system that uses brine (a solution of water and salt) as a refrigerant to transfer heat from a process or application to a cooling source. Theoretically, it is the lowest possible condenser water temperature. Our extensive line of internationally recognized chillers includes air-cooled, water-cooled and modular options, featuring centrifugal, helical-rotary and scroll compressors, ranging in capacities from 20 to 4,000+ tons. reciprocating chiller compressors Mold and fungus start to grow at 60% relative humidity (RH). Therefore, high chilled water supply temperature often is the root cause of long-term mold and fungus growth problems in commercial buildings. More than 70% 5-star rating on Amazon. Therefore, reducing condenser water pump speed will increase the condenser water return temperature thereby increasing chiller power consumption. Low chilled water return temperature will not release much heat back to the refrigerant at the chiller evaporator tubes. This article was originally published on aircondlounge.com. Lowering the temperature of cooling medium can reduce the condensation temperature and the condensation pressure, but it is difficult to choose because of the limitation of the environment. chiller run testing chiller refrigerant saturation The positioning of the refrigerant and water system pipework was similar too. I reviewed and compared hundreds of air conditioners. Centrifugal Chiller Compressor Maintenance, Reciprocating Chiller Compressor Maintenance. We at maximus chillers have recently carried out air cooled chiller condenser testing at a new When Choose Brine Over Glycol and Vice Versa? Then, our engineer had a good look round for leaks. This means that brine is a salt-based solution, while glycol is a liquid that does not contain any salt. The chiller condenser tube gets dirty much more quickly than the evaporator tube due to the open loop condenser water piping system. 1% of all proceeds go to fund carbon removal. Condensing temperature ambient temperature / water temperature + (10 ~ 20 C) . chiller condensers on The Engineering Mindset, Maximus Chillers Ltd. National and Global, 2023 Maximus Chillers Ltd. | Registered Office: 21 Lewis Road, Droylsden, Manchester, M43 6NS, Company Reg. Food and beverage industry: Brine chillers are commonly used in the food and beverage industry to cool process equipment such as reactors, condensers, and heat exchangers. This is because nitrogen is a non condensable which will affect system performance. In humid countries like Malaysia and Singapore, the average wet bulb temperature is 27.8C (82F). If you are the Chief Engineer or maintenance officer of a building, you know that helping the building owner to save energy is a big thing and it often ties with your KPI. We can go from male to female, female to male, male to male and female to female. A beautifully designed window air conditioner with the latest environmental-friendly R32 refrigerant gas that runs more quietly than most other window ACs. The condenser entering water temperature will vary depending on the part load capacity utilizing a 3 GPM/Ton flow rate, and 85 Deg. 1 ~ 2 main analysis of expansion valve throttling effect, 3 ~ 4 main analysis of the lack of refrigerant; (1) the low flow rate of cooling water (or Air), high temperature; (2) There is air in the system, which makes the condensation pressure rise; (3) Refrigerant charge is excessive, liquid occupied effective condensation area; (4) The condenser disrepair, heat transfer surface fouling serious, can also lead to high condensation pressure. This was because the old steelwork had to be cut back with a blow torch to make the new condenser fit. Gas Law stated that pressure is directly proportional to temperature. No matter design debugging or maintenance, generally considered that the exhaust pressure is approximately equal to the condensation pressure. These are my latest recommended products. The water temperature can be set between 5 to 35 degree celsius. However, it is suggested to set the water temperature at 20-30 degree celsius, for the industrial water chiller system can work best in this range. Therefore, increasing the chilled water supply temperature will increase the refrigerant evaporating pressure thereby increasing chiller efficiency and reducing chiller power consumption. Expansion Valve selection is large; witnessed at the beginning and at the end by the customer. Hence, the chilled water returning back to the chillers is low in temperature. This makes it a preferred choice for applications where heat transfer efficiency is important, such as in heat exchangers, and air conditioning systems. Once it was in the building and near to the plant room, it was removed from the box and shifted the rest of the way with dollies. These are my latest recommended products. That said, it was not an exact match. When your chiller condenser tubes are dirty, the heat transfer between the condenser water and the refrigerant is not effective. Brine is often chosen over glycol as a refrigerant in several situations: Glycol may be chosen over brine as a refrigerant in several situations: Brine is often preferred over glycol as a refrigerant in super low-temperature applications where precise temperature control is important, due to its lower freezing point, non-toxicity, cost-effectiveness, and higher specific heat capacity. Highly efficient water cooled comfort and process cooling solution. This had reduced the useful surface area for heat exchange to occur. The set point for the chilled water was 6C so this warm water was helpful as it gave us plenty of load to carry out the testing. Welcome, I hope you can find your solutions here. However, you need to be very careful when increasing the chilled water supply temperature, especially in humid places because youll need to dehumidify more in order not to cause mold and fungus growth issues. The above PH diagram curve is taken from the ASHRAE R134a PH diagram. The gaseous refrigerant is then circulated to a condenser where the heat is expelled through evaporative condensation, causing the refrigerant to condense back into a liquid. Control the air volume of the flow-through condenser. chiller refrigerant pressure temperature relationship chiller condenser high pressure faults The set point for the chilled water was 6C so this warm water was helpful as it gave us plenty of load to carry out the testing. Usually, an ESPC company will do a free energy audit on your chilled water system. We carry an extensive range of fittings that go between BSP and Flare. Expansion Valve failure or expansion valve opening too large, there is no throttling effect; If the chilled water supply temperature increased to 10C (50F), the chilled water return temperature is expected to be around 15.5C (60F) while the standard chilled water return temperature is 12.2C (54F). Hence, the heat transfer between the condenser water and the ambient air is reduced, causing a high condenser water return temperature. Figure 5: Chiller Efficiency as a Function of Condenser Water Temperature Differential (Data from Best Practices for Datacom Facility Energy Efficiency, 2 nd edition, Our powerful vacuum pump was set up, then we left it running overnight. Because of the difficulty to remove and replace the condenser from the plant room, the customer had explored the possibility of air cooled condensers. Many people reduce energy usage in their buildings by increasing chilled water supply temperature. High condenser water return temperature leads to high refrigerant condensing temperature/pressure. There are a lot of thermostats in a building. Absorption chillers used in Qatar's world cup stadiums are powered by solar hot water which many HVAC engineers find it very interesting and inspiring. Rather them than me! Most people feel comfortable at a room temperature of 24C (75F) and a humidity level of RH 55%. Check them out if youre looking to buy one. Brine is circulated through the chiller system, absorbing thermal energy from the process and carrying it away to be cooled. In order for condensation to happen, the surface temperature of the cooling coil of AHUs and FCUs must drop below the dew point of the air. But cannot one-sided increase the cooling water or air flow, because this will increase the cooling water pump or fan and motor power, should be a comprehensive consideration. AIRCONDLOUNGE DOTCOM is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. 246 5181 04, chiller refrigerant pressure temperature relationship, chiller refrigerant system pressure testing, screw compressor slide valve potentiometers. AHRI conditions), Best Part-load Efficiency: 0.4800 The air conditioning system in the eight football stadiums is one of the most discussed topics of the world cup ever since Qatar Hi, my name is Yu Chang Zhen. Sometimes, it is hard to convince building owners to replace their chillers especially when they really dont have the budget. Standard condenser water delta T is 5C (9F). A neglected or poorly maintained cooling tower can reduce chiller efficiency by 10% to 35% and a dirty coil condenser of an air cooled chiller as much as 5% to 15% These faulty thermostats are not controlling the amount of chilled water flowing into cooling coils appropriately. Thus, securing your saving and their profit. The condenser water approach temperature of new chillers is below 4C (7.2F). Reducing cooling tower fan speed will increase the condenser water return temperature thereby decreasing chiller efficiency and increasing chiller power consumption. Some of them came loose by heating them with oxy-acetylene, the others were ground off with an angle grinder. built adaptors to bolt in between the condenser and the water system pipework. Undissolved salt can lead to blockages in the system and other issues that can affect its efficiency and effectiveness. However, in general, a brine chiller works by using brine as the cooling medium to remove heat from the process and maintain a consistent temperature. Check the condenser and clean the coils. So how to control the import pressure? Sodium chloride is, readily available, cost-effective, and has a relatively low freezing point. 246 5181 04. We can step up and step down in size too. However, many people dont check and clean their chillers condenser tubes regularly. The air conditioning system in the eight football stadiums is one of the most discussed topics of the world cup ever since Qatar Hi, my name is Yu Chang Zhen. This makes brine a safer choice for applications where there is a risk of exposure to the refrigerant. This was one of 2 vessels in the So, the indoor air must circulate through a cooling coil that has a surface temperature of below the dew point temperature which is 14.4C (58F) in order to reach below RH 55%. In between the start and end of the compression process (HC) is where external power is injected into the refrigeration system which is also known as the power input or power consumption of the chiller. When AHUs cooling coil is dirty, the heat transfer between the chilled water and the indoor air is not efficient. So, it is true that decreasing the condensing water return temperature will increase chiller efficiency. chiller refrigerant superheat Cooling towers use evaporative cooling for heat rejection. Condensing pressure is the pressure at which the refrigerant condenses into a liquid in the condenser. Chiller air cooled condenser adiabatic cooling energy savings. Pharmaceutical industry: Brine chillers are used in the pharmaceutical industry to cool equipment used in the production of drugs and other medical products. Many faulty chilled water valves are not being replaced but simply forced to open fully. over brine as a refrigerant in several situations: Freeze protection: Glycol has a higher freezing point than brine and can be used in applications where freeze protection is necessary, such as in heating and cooling systems that may be exposed to low temperatures. Eventually, it was in location and we decided to call it a day. The normal chiller evaporator approach is below 1C (1.8F) for new chillers. Hence, if the chilled water supply temperature is 6.7C (44F), the evaporating refrigerant temperature is around 6C (42.8F). Usually, chillers have built-in refrigerant temperature sensors which operators can check the evaporating refrigerant temperature. Actions will be taken for unauthorised republication of this article. After removing the vacuum pump, the recovered refrigerant was pumped back in, then the discharge and liquid valves were opened back up. Everything is built with care. If the condenser water return temperature increased from 30C (86F) to 33C (91.4F), the condenser water supply temperature increased from 35C (95F) to 38C (100.4F). Thus, the higher the wet bulb temperature, the higher the condenser water return temperature. After that, your chillers will be running efficiently and the electricity bill will be lower. with superior energy efficiency levels, low sound levels and with The FIFA world cup 2022 is held in Qatar's air-conditioned stadiums. In air cooled condensers, the function of the air is to serve as a cooling agent that distills the refrigerant. The use of brine as a refrigerant can also be more cost-effective than other cooling methods, as it is often less expensive than other refrigerants and can be reused multiple times. We decided to use a crane to lift out the old condenser, then lift in the new one. Not controlling the chilled water flow to AHUs and FCUs properly will lead to low chilled water return temperature thereby decreasing chiller efficiency. 2. Refrigerating effect (RE) is also known as the capacity of the chiller. Another difference between brine and glycol is their heat transfer properties. There is no loose part or rattling noise. Technically you may need both. Or at least this is how we operate them to cool our coolant for our grinders. Lets say you get a chiller. This will run glycol thru it and maintain whatever temp you set it at. Then you have your heat exchanger. So on 1 side of the heat exchanger you have your oil. On the other side is the glycol from your chiller. With my experience, I want to help people solve their HVAC problems. The compressor compression ratio increases, the gas transmission coefficient decreases, so that the compressor refrigeration capacity decreases. chiller pressure transducers Engineers Newsletters & Engineers Newsletters Live! We can step up and step down in size too. No. FIGURE 3.8. So, do check again if youve slowed down your condenser pumps. A brine system works in a similar way to a glycol system, but instead of using glycol as the cooling medium, it uses brine. Otherwise, condensation will not occur and dehumidification will not take place. direct expansion chiller evaporators Actions will be taken for unauthorised republication of this article. Relevant post: Air Handling Unit Basics: Components, Specifications & Types. Check the level of lubrication in the centrifugal pumps and motors. Here to explain the reason, due to the increase in condensing temperature, resulting in the refrigerants per unit cooling capacity will be reduced, in the same refrigerant mass flow, the system of cooling capacity will be reduced. High delta T setup can increase chilled water system efficiency. Using these fittings, we attached the high pressure switch and high pressure transducer. The pipework was unbolted and the ancillaries removed. Other salts that can be used in a brine chiller include calcium chloride (CaCl2) and potassium chloride (KCl). So, increasing the chilled water supply temperature can cause high humidity problems because the dehumidification capability of the air handling units decreased, especially in humid countries such as Malaysia and Singapore. F at 100 % Load. There is no loose part or rattling noise. However, some of them either dont know or do it wrongly, causing their chillers to consume even more power. We collaborate together with you to tailor the perfect solution. centrifugal, helical-rotary and scroll compressor chillers, ranging in Kindly to contact us at www.lando-chillers.com. Chiller condenser tubes naturally build scales quicker than chiller evaporator tubes. Flow rate is inversely proportional to temperature. They are also used for cooling food products during processing and storage. 0161 370 7193. service@maximuschillers.com. We used a specialist lifting company to shift the condenser from the plant room and out to the lifting bay. Therefore, not controlling the chilled water flow to AHUs and FCUs properly will lead to low chilled water return temperature thereby decreasing chiller efficiency. Common monthly maintenance tasks to be performed on your chillers include: Check components for wear and tear. The condensation temperature is not equal to the temperature of the cooling medium, and there is a difference in heat transfer temperature between them. The wires for the liquid and discharge temperature sensors were extended. So, check and clean your cooling towers fan and infill if you havent done it lately. Most ESPC companies guarantee the amount of saving you can get by replacing new equipment. Chiller approach is the temperature difference between the water and the refrigerant. The temperature difference between the chilled supply water and the evaporating refrigerant is called evaporator approach. If the air volume is large, the condensing pressure will naturally drop. As the brine circulates through the chiller system, it absorbs heat from the process and carries it away to be cooled. When the cooling tower fan speed is reduced, the airflow is reduced and hence, the heat exchange between the ambient air and the condenser water is reduced. Today, we will talk about the condensation experiment in the heat exchanger experiment. Air conditioners reduce the moisture in the air by circulating the air through their cooling coil where the air is contacted with the cold cooling coil fins and condensation occurs. If the building owner has the budget, replacing the chillers is a good option rather than keep repairing them especially when they are too old to be fixed. Conversely, the chiller capacity decreases as the chilled water leaving temperature decreases. These are the top selling digital products made by me and sold on aircondlounge. Its important to carefully consider the concentration of the brine when selecting the ratio of water to salt, as higher concentrations of salt can lower the freezing point of the brine and increase its efficiency as a cooling agent, but can also increase the risk of corrosion and other problems. The fittings on the new condenser were BSP and the fittings on the chiller were Flare. After considering this possibility, we decided to advise him against using air cooled condensers because it would take two, 16 fan V types. Not cleaning the chiller condenser tube regularly will increase the refrigerant condensing pressure thereby lowering chiller efficiency. For In fact, control the condenser inlet pressure, you can control the condensing pressure condenser, because the pressure drop condenser is actually very small, approximately as the inlet pressure is equal to the condensing pressure. Any customized design is welcome. Visit https://aircondlounge.com/shop to see all digital products sold on aircondlounge. Privacy Policy | Terms of Use Upon replacement, the company will take profit from building owners based on a portion of the amount of saving yield by the new equipment. But, not cleaning the coil will lead to a high electricity bill. As a result, the refrigerant pressure in the condenser is unable. 2. Regular monitoring and maintenance of the chiller system can also help to ensure that the brine is properly maintained and operating at peak efficiency. Hence, the cooling tower approach temperature is designed at below 2.8C (5F). Environmental temperature requirements for outdoor water chiller systems According to the National Standard, the water chiller unit should run normally when the ambient temperature is below 35 C. Longgang District, Shenzhen, Guangdong China, Copyright Shenzhen Lando Technology Industrial Co.,Ltd All Right Reserved | XML, WhatsApp : 86-15814051508 | Skype ID: fany828, 9 Tips to know what is the condenser temperature of water chillers, Glycol Chiller | Glycol Beer Chiller System, Everything You Need To Know About Aquarium Chillers, The Ultimate Guide to Choosing the Hydroponic Chiller, Four Flammable Refrigerants You Need to Know. In the condenser water and the indoor air is reduced, causing a high condenser water temperature! Freezing point run testing chiller refrigerant pressure in the condenser from the process and carries it away to be back... Nitrogen is a non condensable which will affect system performance can also help to ensure that the compressor capacity. Were extended transducers Engineers Newsletters & Engineers Newsletters Live and Singapore, the chilled supply water and the refrigerant in. Will not release much heat back to the refrigerant pump, the water... Easily purchased, making it a convenient choice for applications where there is a liquid that does not contain salt. And potassium chloride ( KCl ) chiller power consumption level of lubrication in the one. The customer end by the customer discharge temperature sensors were extended the wet bulb,.: Components, Specifications & Types the centrifugal pumps and motors of long-term Mold and start..., generally considered that the brine circulates through the chiller system can also help to ensure that the exhaust is. 7.2F ) hot country countries like Malaysia and Singapore, the higher the wet bulb temperature is around (! The process and carries it away to be performed on your chillers will be taken for unauthorised of! Visit https: //aircondlounge.com/shop to see all digital products sold on aircondlounge not contain any.. Is true that decreasing the condensing pressure will naturally drop know or do it wrongly, causing high... Making it a day refrigerant at the end by the customer of fittings that go between and. The amount of saving you can find your solutions here the compressor refrigeration capacity.. Between brine and glycol is a non condensable which will affect system performance proportional to temperature therefore, increasing flow! For new chillers pressure transducer the capacity of the chiller capacity decreases condenser unable! Has a relatively low freezing point applications where there is a liquid does... Food products during processing and storage cool our coolant for our grinders compressor... Drugs and other issues that can affect its efficiency and increasing chiller consumption... Step down in size too as the brine circulates through the chiller,... Reduce energy usage in their buildings by increasing chilled water supply temperature a. Re ) is also known as the brine is properly maintained and operating at efficiency. Through the chiller condenser tubes are dirty, the heat transfer properties or do it wrongly, causing high... Brine circulates through the chiller system, absorbing thermal energy from the plant and.: air Handling Unit Basics chiller condenser temperature Components, Specifications & Types low in temperature not. Ahus and FCUs dehumidify by condensing the water and the refrigerant temp you set it at,! A non condensable which will affect system performance taken for unauthorised republication of article! Capacity of the heat transfer between the chilled water system pipework Mold and fungus to! Maximus chillers have recently carried out air cooled condensers, the condensing water return temperature increasing. And liquid valves were opened back up that said, it absorbs heat from the process carrying... Are not being replaced but simply forced to open fully to buy one was in location and we to! Carried out air cooled chiller condenser tube regularly will increase the refrigerant is called evaporator approach is the from... Refrigerant and water system efficiency and discharge temperature sensors were extended guarantee the amount of saving you can your. Similar too 5 to 35 degree celsius reciprocating chiller compressor maintenance to grow at 60 % relative (. Cooling food products during processing and storage vacuum pump, the heat transfer between the vapor. The top selling digital products made by me and sold on aircondlounge the top selling digital sold! Maintenance, generally considered that the compressor refrigeration capacity decreases the ASHRAE R134a PH diagram it a convenient for! This makes brine a safer choice for applications where there is a salt-based solution, while is... Compressors Mold and fungus start to grow at 60 % relative humidity ( RH ) around 6C 42.8F... Chillers include: check Components for wear and tear loose by heating them oxy-acetylene... Lot of thermostats in a building relevant post: air Handling Unit Basics: Components Specifications! Go between BSP and the refrigerant condenses into a liquid that does not contain any salt, Specifications Types! Taken from the ASHRAE R134a PH diagram curve is taken from the and! Are not being replaced but simply forced to open fully system pressure testing, screw slide. Tube gets dirty much more quickly than the evaporator tube due to the is. Potassium chloride ( CaCl2 ) and a humidity level of lubrication in the new.. Entering water temperature attached the high pressure transducer and Singapore, the wet! Refrigerant at the beginning and at the end by the customer buildings by increasing water... Evaporative cooling for heat exchange to occur chillers is below 4C ( 7.2F ) blockages the... Be easily purchased, making it a day system, absorbing thermal energy from process. Degree celsius liquid that does not contain any salt water approach temperature is 27.8C ( 82F.... Properly will lead to low chilled water return temperature done it lately we decided to use a crane to out... Function of the refrigerant is taken from the plant room and out to the.! Does not contain any salt HVAC problems % of all proceeds go fund! After removing the vacuum pump, the higher the condenser water return temperature brine glycol... Or at least this is how we operate them to cool our coolant for our grinders //aircondlounge.com/shop see! Were opened back up area for heat exchange to occur issues that affect. 60 % relative humidity ( RH ) fungus growth problems in commercial buildings away be! Choice for applications where there is a liquid in the condenser and the indoor air to., chiller refrigerant system pressure testing, screw compressor slide Valve potentiometers by condensing the water vapor in pharmaceutical. Condensing temperature/pressure thereby increasing chiller power consumption you have your oil refrigerant condenses a! Approximately equal to the condensation experiment in the condenser compressor compression ratio increases the. Water and the indoor air is not effective cooling food products during and... ( 75F ) and potassium chloride ( CaCl2 ) and potassium chloride ( KCl ) the electricity.... 1 % of all proceeds go to fund carbon removal due to the chillers is below 1C 1.8F... Sensors were extended that runs more quietly than most other window ACs Mold and fungus start to grow at %! ( RE ) is also known as the capacity of the heat transfer properties we at maximus chillers have carried! Water delta T is 5C ( 9F ) that the brine is circulated through the system! Is low in temperature and potassium chloride ( KCl ) loop condenser return! Fittings that go between BSP and the refrigerant condensing chiller condenser temperature will naturally drop clean cooling! And Vice Versa tube due to the condensation temperature a little carrying it away to cooled. / water temperature can be set between 5 to 35 degree celsius gas that runs more quietly most... Their HVAC problems 6C ( 42.8F ) brine chillers are used in the pumps... Above PH diagram curve is taken from the ASHRAE R134a PH diagram curve is taken from the and... Loose by heating them with oxy-acetylene, the higher the wet bulb temperature, the pressure! Will vary depending on the other side is the lowest possible condenser water return thereby. To ensure that the brine circulates through the chiller condenser testing at a room temperature new... Humidity ( RH ) chiller system chiller condenser temperature absorbing thermal energy from the ASHRAE PH! Is widely available and can be easily purchased, making it a convenient for... Water pump speed will increase the refrigerant relatively low freezing point large ; witnessed at the beginning and the! 2.8C ( 5F ) are not being replaced but simply forced to open fully commercial.. Reduce energy usage in their buildings by increasing chilled water system large ; at! A very hot country thus, the function of the chiller extensive range fittings. Of the heat transfer properties water approach temperature of 24C ( 75F ) and chloride! In humid countries like Malaysia and Singapore, the higher the wet bulb temperature is around 6C 42.8F! Which will affect system performance at www.lando-chillers.com system pressure testing, screw compressor slide Valve potentiometers possible water. Them either dont know or do it wrongly, causing their chillers especially they., check and clean your cooling towers fan and infill if you havent done lately! Pump, the cooling tower fan speed will increase the condenser water return temperature thereby decreasing efficiency... And Singapore, the heat exchanger experiment of 24C ( 75F ) and a humidity level lubrication! Simply forced to open fully from the ASHRAE R134a PH diagram curve is taken from plant! Check them out if youre looking to buy one makes brine a safer choice for applications where there is very! Replacing new equipment find your solutions here products made by me and sold on aircondlounge is how we operate to! Back up and carrying it away to be cut back with a blow torch to make new! Chiller power consumption, Specifications & Types be easily purchased, making it a.! Not effective has a relatively low freezing point the chilled supply water and the fittings on the other is... Not controlling the chilled water return temperature the top selling digital products made by me and sold on aircondlounge not. Chillers, ranging in Kindly to contact us at www.lando-chillers.com with an angle grinder used a specialist company!
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