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LD -80°C~ -30°C
LD -80°C~ -30°C
LD -80°C~ -30°C
LD -80°C~ -30°C

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

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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
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 100*150*185 200*145*205 200*145*205 250*145*225 250*145*205 350*160*245 400*160*245 400*160*245 500*200*260 650*200*260 650*220*260
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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