What causes sediment in the use of the chiller cooler?

A chiller is a water-cooled unit that uses water circulation to provide a constant temperature, constant flow and constant pressure cooling water. The LNEYA cold water system has its own working principle, that is, a certain amount of water is injected into the water tank of the machine, the cooling water is cooled by the refrigeration system, and then the cooling water is operated by the compressor. The cooling water is sent to the equipment to be cooled, the heat is taken away, then the temperature rises, and then flows back to the water tank to achieve a cooling effect. However, when using a chiller for a long time, there will usually be some dirt deposits in the chiller pipe or water tank. What is the reason below.

1.Chemical processor
If a zinc salt or a phosphate inhibitor is added to the water circulation system, zinc or phosphate scale is formed. Therefore, we must always carry out maintenance work on the chiller, not only to ensure the cooling capacity, but also to extend the service life of the chiller.

2. Process media leakage
The water cooler leaks, especially if it leaks oil or some organic matter causes deposits to form.

3. Air
Sediments, dust, microorganisms and their spores enter the circulatory system with the air, and sometimes insects are carried into the system, causing the heat exchanger to clog. When the environment surrounding the cooling tower is contaminated, corrosive gases such as hydrogen sulfide, chlorine dioxide and ammonia will react in the unit and indirectly cause deposition.
The LNEYA chiller cooler is a fully enclosed system that does not expose the media to outside air during use.

It can be seen from the above that in the use, the chiller needs to be maintained at all times, which not only ensures the cooling capacity, but also prolongs the service life of the chiller and the saving of circulating water.

If you need any information, you can contact LNEYA to inquire about the use of chiller coolers and other cooling system equipment at sales@cnzlj.com/LNEYA.COM.

What are the effects of power failure on liquid nitrogen cryogenic cold box?

Different industries have different temperature requirements for cryogenic cryostats. Of course, there are many types of cryogenic cryostats. The refrigeration methods used in different industries are different. LNEYA uses compressor refrigeration to achieve refrigeration. The effect is similar to or better than liquid nitrogen cryogenic cryostat.

However, there are still customers who use liquid nitrogen cryogenic cryostats, and customers who encounter power failures when they encounter them do not know how to solve them.

One is the frequent power outage. If the power is cut off frequently, then there will be some damage in the next time the liquid nitrogen cryogenic cold box is started. The compressor is out of the working state, then the compressor will be on the compressor. There is damage. If the power outage is not used for a long time, it is also easy to cause the pipeline inside the liquid nitrogen cryogenic cold box to be damaged and the pipeline refrigerant to leak. Obviously, the impact is relatively large and prone to failure.

In two cases, it is not energized for a long time, because it is cold in the northern part of the winter, so many customers cut off the electricity of the liquid nitrogen cryogenic low temperature box. So what can you do in the end? If the refrigerant is not energized for a long time, the refrigerant will be converted from a gaseous state to a liquid state during operation, and it will be very easy to cause damage to the pipeline, which will lead to leakage. That is, leaking refrigerant.

Then don't frequent power outages. If there is no power failure when the compressor is not working, if there is a sudden power failure and then the power is turned on immediately when the compressor is working, the chance is caused by the large pressure difference between the two ends of the compressor. The liquid nitrogen cryogenic cold box has no way to work, so the thermal protection is stopped. If the protection zone of the liquid nitrogen cryogenic cold box is damaged, the motor will be burnt if it is serious.

It seems that this situation is also more complicated. If you feel that the liquid nitrogen is cold and cold, you can choose LNEYA cryogenic low temperature box or ultra low temperature freezer, and the cooling effect is good.

Explosion Proof Refrigerator -100℃～-30℃

Overview:

• Microcomputer control, cascade temperature controller, digital temperature display, the regulation of unit 0.1℃, inside the temperature range -20 ℃ ~ -125 ℃ adjustable.
• Multi-safety protection, more reliable operation.
• France TECUMSEH compressor, Germany DANFOSS compressor, EMERSON compressor, automatic cascade refrigeration technology.
• With self-diagnosis function, freezer overload protection, high-pressure switches, overload relays, thermal protection device and other security functions, and fully guarantee the use of safety.
• Three sealed mold layer of insulation, Extra-thick high-density polyurethane foam insulation layer, the effect of good insulation; Inline vacuum insulation panels.
• Human design, more convenient and flexible.
• Suitable for mechanical producing plant use.

Model	GX-A028N	GX-A050N	GX-A0A10N	GY-A028N	GY-A050N	GY-A080N	GY-A0A16N
Volume	280L	500L	1000L	280L	500L	800L	1600L
Inner dimension	610*600*760	800*735*850	1000*1000*1000	800*600*600	1200*650*650	1350*800*750	2000*900*900
Type	（Vertical）			（Chest/Horizontal）
Capability carrying	150KG	220KG	300KG	150KG	220KG	300KG	650KG
	Designed bearing capacity is two times of the standard one, (refrigeration system is designed according to the standard capacity when target artifact weight is greater than the standard capacity, the cooling rate will decrease)
Temp. range	-100℃～60℃	-100℃～60℃	-100℃～60℃	-100℃～60℃	-100℃～60℃	-100℃～60℃	-100℃～60℃
Cooling capacity at -90℃	0.7kw	1 kw	2 kw	0.7kw	1 kw	2 kw	3kw
Temp. accuracy	±2℃	±2℃	±2℃	±2℃	±2℃	±2℃	±2℃
Heating power	2kw	3kw	5kw	2kw	3kw	5kw	8kw
	Nickel-chromium alloy electric heating heater, the controller has double safety protection, with independent temperature limiter protection.
Cooling rate	(Ambient temperature of 25℃, no-load, from 60 ℃s to -95 ℃ about 1 hour).；cooling rate will be a little different for temperature changes.
Controller	ASET multifunctional controller
Operation panel	7-inch color touch screen, display set temperature, measured temperature.
Temp. record	Temperature curve and fault record, U-disk data export, excel format.
Inside circulating air	1650 m³/h	2100 m³/h	2750 m³/h	2100 m³/h	2750 m³/h	3500 m³/h	6000 m³/h
	When it is open, the internal circulation fan automatically turns off. The touch screen displays open state.
Compressor	Emerson Copeland, adopt cascade refrigeration technology
Intermediate heat exchanger	KAORI Plate heat exchanger
Dry filter	Emerson
Expansion valve	Electronic expansion valve
Evaporator	Copper-tube with aluminum-fin
Cooling Type	Air-cooled with water-cooled auxiliary functions (Ensure good cooling capacity when temp. above 30℃)
Means of insulation	Polyurethane foam insulation, thermal insulation layer 125 mm, with embedded FIR boards
Safety Protection	Self-diagnosis function; Phase sequence phase failure protection; leakage protector; cooling unit overload protection; high and low pressure switch, overload relay, thermal protection device, high temperature protection and temperature fault protection.
Case material	Outside is cold rolled steel painting, internal is SUS304 wire drawing board.
Refrigerant	R404A R23 R14
Dimension	1150*1150 *1850	1350*1300 *1850	1550*1500 *2100	2200*1150 *1150	2700*1200 *1200	2900*1300 *1250	3700*1400 *1350
Power 380V 50HZ	9KW MAX	13.5KW MAX	18KW MAX	12KW MAX	16.5KW MAX	20KW MAX	30KW MAX
Weight	470kg	580kg	750kg	495kg	625kg	810kg	940kg
Optional	High temperature reaches 150℃ and temperature accuracy is ±0.5℃；the input power will be changed （When select this model, the thickness of thermal insulation layer will be 150mm，thermal insulation material will be silicate and vacuum plate）
Optional	Temp. accuracy ±0.5℃
Optional	Cooling and heating program controlled, meet cold treatment process requirements(can set 5 programs, each program can edit 45 steps.)
Optional	Interior door, reduce cooling capacity lost when picking small workpieces (temperature below 60℃ optional)
Optional	Outside SUS304 wire drawing board case
Optional	Diameter 50mm cable hole
Optional	Electric heating vacuum glass observation window (with lighting) 200mm*300mm
Optional	Low temperature automatic defrost (can be once per hour or use manual button to defrost), ensure it can work at low temperature for long time even the door is open and close frequently）

Instructions to Use Explosion Proof Refrigerator
Explosion Proof Refrigerator is a kind of special refrigerator mainly used for the special industrial environment to keep dangerous goods which are difficult to preserve, volatile and inflammable and explosive. With the development of petroleum, chemical industry, medicine, aerospace, military and other fields, the use of explosion-proof refrigerators is more and more frequent. However, in terms of technology, performance, technology, design and so on, few can meet the national standard.

As to the use of the refrigerator for the first time, you must follow the instructions, otherwise, improper operation may cause some unnecessary accidents. So you should carry out in accordance with the corresponding instructions to the operation and avoid freely use the machine with high precision, in order to avoid the loss of function of the equipment, which will cause more dangerous results.

Also, it should be noted that you can run it for one to six hours with an empty container when electrifying for the first time, so as to make sure the equipment is at a normal state, after which you can put the objects in it. Meanwhile, If the machine stops when running, you should wait at least five more minutes before it can be turned on again, so as not to damage the compressor in a short time. These small details noticed the use of such high-precision instruments will be easier.

Contact Lneya for more.