LD -80℃~-30℃

Water Cooled Chiller

Cooling capacity @-75℃4kW~180kW
Power range14kW~588kW
Expansion tank100L~750L
RefrigerantR404A/R23 or R508B
Weight950KG~8000KG
Place of OriginChina

chillers ultra low temperature chiller water cooled chiller

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Product data download

manual.pdf

Configuration Details

Model	LD-4W	LD-6W	LD-8W	LD-12W	LD-20W	LD-30W	LD-40W	LD-60W	LD-90W	LD-120W	LD-180W
Temperature Range	-80°C~ -30°C
Cooling Capacity At -75°C	4kw	6kw	8kw	12kw	20kw	30kw	40kw	60kw	90kw	120kw	180kw
	3440Kcal/h	5160Kcal/h	6880Kcal/h	10320Kcal/h	17200Kcal/h	25800Kcal/h	34400Kcal/h	51600Kcal/h	77400Kcal/h	103200Kcal/h	154800kcal/h
Circulation Pump Info	6.6m³/h	6.6m³/h	9m³/h	15m³/h	25m³/h	25m³/h	25m³/h	/	/	/	/
	2.5bar max	2.5bar max	2.5bar max	2.5bar max	2.5bar max	2.5bar max	2.5bar max	/	/	/	/
Inlet&outlet connection size	DN-25 PN-10	DN-25 PN-10	DN-32 PN-10	DN-40 PN-10	DN-50 PN-10	DN-50 PN-10	DN-50 PN-10	DN-65 PN-10	DN-65 PN-10	DN-80 PN-10	DN-80 PN-10
Cooling Water at 30 degree	10m³/h	14m³/h	20m³/h	25m³/h	35m³/h	45m³/h	65m³/h	90m³/h	120m³/h	180m³/h	250m³/h
Expansion tank(standard)	100L	175L	250L	350L	500L	600L	750L	/	/	/	/
Compressor	Dorin semi-closed compressor				Dorin compressor/HANBELL、Fusheng、Bitzer screw compressor
Operation Panel	7-inch color touch screen display, temperature curve record
Control System	PLC&Module，Set temperature difference of refrigeration on & off
Circulation Pump	The whole system is a full closed circulation, there is no oil mist at high temperature and no water vapor at low temperature, pressure do not rise up when system is running. The system will supplement oil automatically at low temperature
Circulation Pump	LNEYA Mangetic Pump
Evaporator	Plate heat exchanger
Condenser	Casing type water-cooled condenser / tube-type water-cooled condenser
Intermediate heat exchanger	Plate heat exchanger
Refrigeration accessory	Oil separators, drying filters, expansion valves, refrigeration solenoid valves, pressure control, mirrors, etc. all use Emerson / Danfoss and other brands
Electric	AC contactors, intermediate relays, circuit breakers, thermal relays, etc. are Schneider / ABB brand
Refrigerant	R404A/R23/R508B
Secondary refrigerant	Ethanol, dichloromethane, heat transfer oil, etc.
Safety Protection	High pressure protect; water supply cut-off protection; over-current protection; leakage protection; sequential and phase failure protection; High temperature protection; Sensor Failure protection; Liquid low level protection etc. multi-safety protection
Level Indicator	Adopt glass liquid level indication
Piping material	Expansion tank, cold storage tank and circulation pipeline are all made of SUS304
Case material	Channel steel + square tube + cold rolled plate sealing plate spray 7035
Dimension cm	100150185	200145205	200145205	250145225	250145205	350160245	400160245	400160245	500200260	650200260	650220260
Power	24kW	27kW	38kW	51kW	69kW	101kW	136kW	200kW	295kW	396kW	588kW
dB	within 75 dB		within 80 dB			within 90 dB
Weight （kg）	950kg	1100kg	1400kg	1800kg	2200kg	3000kg	3500kg	4000kg	5000kg	6000kg	8000kg
Optional	Optional outside touch screen display controller (separated), the communication line distance is 10 meter
Optional	Optional explosion-proof touch screen control system (ExdeIIBT4), the communication line distance is 15 meter

Product Description

1.Temperature ranges from -5℃ ~ -150℃, can meet different temperature
2. Famous brand semi-closed piston compressor, semi-closed bipolar piston compressor, semi-hermetic screw compressor, main brand are BOCK. Bitzer, Copeland, Handbell, fusheng; Plate heat exchanger, Small volume, High efficiency
3. Top imported cold controller; Generator cooling water circuit uses intermediate heat exchanger, improve system reliability and safety.
4. DANFOSS electronic expansion valve, high precision control;
5. Adopt Siemens PLC S7-200/300, LNEYA touch screen, automatic control, temperature curve display, temperature record U disk, fault alarm;
6. Offer machine installation and system test, users only need to finish the installation of refrigerant and cooling water.

Chiller Knowledge

Maintenance for Lubrication System of Water Cooled Chiller Plant

When the chiller is below 80 ℃ ~ 30 ℃ below zero in the running system, people pay more attention to refrigerator, frozen water cycle system and electric control system, so the lubrication system is often overlooked. However, this system is also very important to the chiller. The maintenance of the chiller is indispensable, now we are going to tell you something about it.

1. Observe the normal oil surface, oil temperature and oil pressure in the daily inspection.

2. Regularly check the oil quality according to the oil change index stipulated in the frozen lubricating oil, and replace or supplement the filtered new oil.

3. Pay attention to check and adjust the end face clearance of the oil pump in the middle and overhaul, and replace the pump when necessary. The end face clearance of the pump varies from 0.03 to 0.08mm. Please refer to the assembly technical requirements and factory regulations of the pump for concrete value.

4. Regularly replace or clean the filter core, pipeline, and crankcase.

The maintenance of the lubrication system of the chiller requires techniques, which mainly involves the performance of the compressor’s main engine. It is recommended to be operated by professionals to avoid unnecessary losses.

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