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Cold Room Common Fault Problems and Its Solutions

Cold rooms are generally used in storing large quantities of products or goods that requires low temperature, it is important that you keep it in shape to operate smoothly and avoid fault problems. Following are the list of the most common cold room fault problems that you may encounter; what causes them and why and how best to solve them.

Cold room common fault problems and solutions

1. Initial operation of cold room refrigeration equipment: The initial process of cold room refrigeration equipment should always observe the oil level and oil return of the compressor and the cleanliness of the oil. It is assumed that the oil is dirty or the soil surface should be resolved in time to avoid inadequate lubrication.


2. Always observe the operating status of the heart compressor of the cold room refrigeration equipment: check the exhaust temperature. When operating in the season, pay special attention to the operating state of the system, and adjust the system liquid supply and condensation temperature in time.


3. Do not start for a long time or start the machine for a great time without stopping or the temperature of the cold room is not stopped: check whether there is dirt on the condenser, the heat dissipation will cause the condensing pressure of the refrigerator to be too high, in order to protect the compressor, in the pressure controller Under the action of the machine stops running, wait until the heat is good, press the black reset button on the voltage controller, the machine will automatically resume operation.

4. Usually by observing the changes of the instrument: listening to the sound of the machine running, touching the temperature changes of the organization and other methods to keep the operating state of the compressor found that the compressor has a string of gas and other phenomena should be repaired or replaced in time.

5. Cold storage room due to poor insulation or sealing performance, resulting in large loss of cooling capacity: poor thermal insulation performance of the cold storage is due to insufficient thickness of insulation layer of pipelines, warehouse insulation walls, etc., insulation and insulation effects are not sound, it is mainly designed insulation The thickness of the sheet is not selected correctly or the quality of the insulation material is poor during construction. Or the insulation and moisture-proof performance of the insulation material may be destroyed, causing the insulation layer to be damp, deformed or even smashed, and its thermal insulation capacity is decreased, and the loss of the cold storage capacity of the storage is made, and the temperature drop of the room is obviously slowed down.

6. The surface of the cold storage room evaporator is too thick or excessively dusty: the heat transfer effect is reduced to prevent the frost layer on the surface of the evaporator from being too thick, and it needs to be defrosted regularly. In addition to excessive frosting, the heat transfer effect of the evaporator is not good. The surface of the evaporator is too thick for long-term uncleaning, and its heat transfer efficiency is also significantly reduced.

7. There is more air or refrigeration oil in the evaporator: the heat transfer effect is reduced. Once the evaporator has more refrigerant oil on the inner surface of the heat transfer tube, the heat transfer coefficient will be reduced. Similarly, if the heat transfer tube is There is more air, the heat exchange area of the evaporator is reduced, the heat transfer efficiency is also significantly reduced, and the warehouse temperature drop rate is slowed down.

8. Improper adjustment or blockage of the cold room throttle valve: If the refrigerant flow rate is too large or the throttle valve is improperly adjusted or blocked, it will directly affect the refrigerant flow entering the evaporator. When the opening degree of the throttle valve is too large, the refrigerant flow rate is too large, and the evaporation pressure and the evaporation temperature also increase. Meanwhile, when the throttle valve opening degree is too small or blocked, the refrigerant flow rate also decreases, and the system flow rate is also reduced. The amount of cooling is also reduced.

Generally, by observing the evaporation pressure, evaporation temperature and frosting of the suction pipe to judge whether the throttle valve refrigerant flow is suitable, the throttle valve blockage is an essential factor affecting the refrigerant flow rate, and the leading cause of the throttle valve blockage is ice: blocking and dirty plugging. The ice blockage is due to the weak drying effect of the dryer. The refrigerant contains moisture. When flowing through the throttle valve, the temperature drops below 0 °C, and the humidity in the refrigerant forms ice and blocks the throttle hole; the dirty plug is Due to the accumulation of more dirt on the filter inlet of the throttle valve, the refrigerant flows poorly and forms a blockage.

9. Insufficient refrigerant amount in the refrigeration system: insufficient cooling capacity There are two main reasons for inadequate refrigerant circulation in the cold storage. First, the refrigerant charge is insufficient. In this case, only enough refrigerant can be added. One reason is that the system refrigerant leaks more. In the case of such a situation, the leak point should be searched first. The pipelines and valves should be inspected to find out the leaked parts and then filled with a sufficient amount of refrigerant.

10. The compressor efficiency is low: the cooling capacity cannot meet the warehouse load requirements. Due to the long-term operation of the compressor, the cylinder liner and piston ring and other components are dangerously worn. The matching clearance will increase, the sealing performance will decrease accordingly, and the compressor’s gas transmission coefficient will also follow. The reduction will reduce the cooling capacity. The refrigeration capacity of the compressor can be roughly estimated by observing the suction and exhaust pressure of the compressor. If the refrigeration capacity of the compressor drops, the standard method is to replace the cylinder liner and piston ring of the compressor. If it still fails to work after replacement, other factors should be considered, even disassemble and repair, and eliminate the fault factor.

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Cold freezer room evaporator and air cooled condenser will be shipped to Australia

Cold freezer room evaporator and air cooled condenser will be shipped to Australia

Air cooled condenser

Cold room evaporator is an important component together with other major components in a refrigeration system such as compressor, condenser and expansion device. The reason for refrigeration is to remove heat from air, water or other substance. We have water defrosting, electrical defrost and hot gas defrost. They are designed for small, medium, and large industrial cold rooms, frozen storages, pre-cooling, blast freezing, and fast cooling room applications.

Industrial Refrigeration Evaporators advantages:

1, standard coil size, many materials: copper coil, stainless steel coil, and aluminum coil etc, many types: smooth pipe, screwed pipe etc.

2, standard thickness for heat exchanger fin, anti corrosion fins materials.

3, advanced sheet-forming machine.

4, high quality fan motor, IP54 and insulation F;

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Mobile 20ft container cold room will be exported to Africa

Mobile potable 20ft container cold room will be exported to Africa

Atlascool container type cold rooms and cold storages is portable and moveable, you can put it anywhere , you can move it or hire it, the fact that it is portable offers you many advantages. Many business owners, and especially fishing companies prefer portable container type cold storages.

Our mobile container type cold room and cold storage is suitable for international container transport standards. it can be used directly after you receive the goods. The container cold room can be pre-assemble in the factory, that will save your more installation time and cost.

Refrigerated containers are also preferred due to practical and ease of use. You just need to provide energy to operate the system and will obtain required cooling within an hour.

We design and manufacture right type of portable refrigerated containers that fully meet your requirements. We design container type refrigeration for different purpose of use such as cold storage, chilling room, freezing room or blast freezing. We offer custom made solutions according to your demand by installing proper refrigeration unit, pu panels and suitable doors. Container type cold rooms and cold storage will be used in many industries to preserve wide range of products such as fresh fruits, meats, fish, ice cream, chicken, vaccinations, sensitive chemicals etc.

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Compressor condensing units for walk in cold rooms, chiller and freezer rooms, blast freezer room

Compressor condensing unit is the most important part of whole cold room system. A condensing unit typically is a high side assembly of a refrigeration system. condensing unit is mostly used to work together with cold rooms, walk in freezers, and blast freezer.

For small and medium cold room, we usually choose semi-hermetic piston condensing unit. For large cold room, we usually choose centralized compressor unit. For blast freezer, we usually choose screw type compressor or double stage compressor. According to the cooling capacity, we will design it to meet our clients’ requirement.

For some countries, in Winter the temperature is lower than minus 0°C or in Summer the temperature is more than 45°C. We will consider the climatic environment of the location, and chose suitable condenser model for customers.

Cold room compressor condensing units Features:

1, Various kinds of models for your choice;
2, Best quality components of world famous brands;
3, High efficiency shell and tube condenser which enables high energy efficiency ratio;
4, Compact structure, sturdy and durable, convenient to install;
5, Widely application and can use R22, R134a, R404a, R507a etc.

Our compressor condensing unit factory advantages:

1. Reliable raw materials:
World famous brand components such as BITZER compressor, CAREL controller DANFOSS valve, and electrical members are SIEMENS.
2. Strong R&D ability and technical supports:
We have 9+ patents
10 years’ experiences engineer provide free technical supports
3. Quality control:
ISO 9001, CCC certificate, CE
4. Complete after-sales ability:
We have one of the five BITZER Green Point maintenance centers.
5. Complete certifications:
Business license and all necessary government licenses
Production License (many other manufacture don’t have)

Applications of compressor condensing unit

We had provided many types of effective and states of the art cold rooms to over 45 countries. ATLASCOOL brand condensing unit is widely used for milk cooling tanks, cold rooms, freezer rooms, fermentation rooms, canteens, restaurants, hospitals and other cold storage industry.

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blast freezer room for chicken and meat

Blast Freezing (-35°C / -40°C) blast freezer room for chicken and meat

Blast freezer room is a specially designed freezer room with operating temperature ranging between -35 to -40o C. It is designed to fast-freeze fresh meat, fish, chicken, turkey, or other food items.

Blast freezing is the process of cooling until obtaining core heat of product with a temperature of -18°C. This quick-freezing process is conducted in the -35°C / -40°C rooms. When the core heat of the product reached to -18°C, products are transferred to frozen storage rooms. -35°C / -40°C Blast Freezing is not used for storage purposes; it is only for Blast-Freezing.

Principally, the body or panel thickness of a standard blast freezer ranges between 150 to 200mm thick, and of 40kg/m3 or more, panel density. The kind of door for this application must be as thick as the body panel to reduce or eliminate heat ingress.

In order to choosing proper cooling device; product type, amount, entrance temperature, room dimensions and targeted Blast-Freezing time has to be taken into consideration. It is significant to keep Blast-Freezing time short to maintain long self-life of the products.

Blast freezer rooms applications:

Blast freezers are used in almost all food processing facilities such as; poultry farms, yogurt and ice cream production facility or factory, fish and meat processing plants and abattoirs, among others.
They are also perfect for getting baked goods easily cooled down after they come out of the oven. Rapid cooling of the food helps preserve the crisp flavor of their crust, and allows them to be served at their optimal temperature. Blast freezers are also used in blood banks for preserving the plasma of the blood.

All types of Blast freezers room

Mini blast freezer:- This is usually a standing model with slim doors. It has limited capacity for few items. It’s not a walk-in freezer. It is manually loaded with items as a very small processing facility with temperature at -25o C.

Commercial Blast freezer:- This is about the most common type in the market. It’s a walk-in model widely used in farms, abattoirs, and other food processing facilities. It’s operating temperature ranges from -25 to -40o C.

Tunnel blast freezer:- This is a specially designed blast freezer with conveyor. The conveyor takes items in and out of the blast freezer. Warm items conveyed in comes out frozen and then bagged or packaged onward to the storage room.

Temperature ranges between -40 to -60C for a tunnel blast which is applicable in large processing facilities and packaging industries where produce are expected to be frozen within minutes.

This is possible because of the temperature that is extremely low. The use of conveyor that replaces human traffic to and from the blast chamber is also an enormous advantage. Blast freezing temperature is maintained because of the perfect body insulation, standard heat proof door and higher refrigerating unit capacity used.

Shock Blast freezer:-  This is another type of specially designed quick freezer designed with a temperature range from -40 to -85o C. This is used mainly in pharmaceutical environment for processing and storage of bio-pharmaceutical products.

Different prices for different customizations. Any size of cold room and requirements is acceptable.

Please feel free to let us know your demand information, we will contact you as soon as possible, looking forward to cooperating with you!

Are you running a food business? and do you need a blast freezer room for chicken and meat? We provide one-stop solutions for cold rooms, any sizes or temperatures are available. Contact us now!

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whole cold room exported to Mauritius

whole cold room exported to Mauritius

As a professional cold room manufacture for more than 18 years,

What can we manufacture?

Cold room, prefabricated cold room, Cold storage, industry cold storage, commercial cold storage;Freezer room, blast freezer room, walk in freezer room; Chiller room, small chiller room, chiller room;

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Professional cold room for hospital exported to Ghana

Professional cold room for hospital exported to Ghana

As a professional cold room manufacture for more than 18 years,

What can we manufacture?

Cold room, prefabricated cold room, Cold storage, industry cold storage, commercial cold storage;Freezer room, blast freezer room, walk in freezer room; Chiller room, small chiller room, chiller room;

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Cold storage room for milk & dairy products

Starting from birth, milk and milk products are the staple food vital for human diet. Storage of milk and other dairy products is very important in our life. These products require constant and excellent protection to avoid any kind of deterioration of the quality of the product. Usually, dairy products contain microorganism that makes it almost impossible to use these products for a long period without proper storage.

Milk & dairy products are among the foods whose shelf life can be extended by storing them in a cold storage. Milk and dairy products should normally are consumed within a few weeks. However, with the use of cold storage, the life of foods such as milk, yoghurt and cheese can be increased up to a few months.
Milk & dairy products are products with a short shelf life that must be stored in a cold storage. For this reason, animal foods such as milk, cheese and yoghurt should be cooled as soon as possible after their production.

How Should Milk and Dairy Products be Stored in the Cold Storage Room?

Milk and dairy products have a very short shelf life as they are very inclined to spoilage. For this reason, the processes should be carried out much faster after milking and the product should be put in the cold storage as soon as possible.
Milk should be stored as short as possible immediately after milking and its interaction with the outside environment should be stopped. The best possible storage conditions are below 10 ° C. Thus, the activities of bacteria in milk are reduced to a minimum.

It is also of great importance that the milk starts to be processed within 24 hours at the latest after milking.

At What ° C should milk & dairy products be stored in cold storage room?

1, Storing sterilized milk (drinking milk) at 4-10 ° C extends its life considerably. The storage life of milk stored in cold storage at 15-20 ° C varies between 1.5 and 3 months.

2, Yoghurt has different storage conditions and storage life. Yoghurt can be stored for about 1 week at 7-10 ° C, 1-2 weeks at 5-7 ° C and 3-6 weeks at 0-1 ° C.

3, The condensed milk products can be stored in cold stores at 15 ° C and below for up to 2-3 years. If stored at temperatures above 15 ° C, gelation and clumping is seen in the product.

The maximum storage life of the cheese varies according to the type of cheese. However, if we interpret it in general, cheese stored at 5 ° C can be stored for approximately 1-12 months, while the storage life of cheese stored at temperatures around 15 ° C varies between 3 weeks and 9 months.

How do you keep your dairy products stored safely? Very simple! Just follow the guidelines listed below to properly save your milk and other related products;

1, Store your dairy products in a protective covering so that they don’t absorb any odor from their surroundings;

2, Don’t store your dairy products alongside with vegetable. Using a separate refrigerator or a warehouse as the case may be is preferable;

3, Ensure that the cold room is clean always. Dairy products are very sensitive.

4, Apply the principle of rotation while storing your products. Use the old ones first and store the new ones for later;

We are experts in building the best cold rooms and freezers. If you need a milk & diary cold storage room, our engineers will work closely with you to deliver a high-quality storage room.