Direct-Cooled Ultra-Low Temperature Freezer -150 Degree
Features:
1.Temperature ranges from - 5 ~ - 150 degrees, can meet different temperature2. Adopt environmental protection refrigerants
3. 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
4. Top imported cold controller(DANFOSS pressure controller, balance valve, expansion valve, solenoid valve, filter drier, Emerson oil separator, ALCO liquid mirror, check valve, etc.)
5. Generator cooling water circuit uses intermediate heat exchanger, improve system reliability and safety.
6. DANFOSS electronic expansion valve, high precision control;
7. Adopt Siemens PLC S7-200/300, LNEYA touch screen, automatic control, temperature curve display, temperature record U disk, fault alarm;
8. Large cooling capacity adopts semi-hermetic screw compressor, electronic expansion valve control, high efficiency and energy saving;
9. Offer machine installation and system test, users only need to finish the installation of refrigerant and cooling water;
10. Factory testing: each refrigerating unit is on load test of not less than
11. hours in the factory.
| Model | SLJ-3W SLJ-3 | SLJ-4W SLJ-4 | SLJ-6W SLJ-6 | SLJ-11W SLJ-11 | |
| Temperature range | -110~150℃ | ||||
| Cooling capacity | -120℃ | 3kw | 4kw | 6kw | 11kw |
| -135℃ | 2.5kw | 3.3kw | 5kw | 9kw | |
| Evaporator space | 2㎡ | 2.8㎡ | 4㎡ | 7.8㎡ | |
| Evaporator | ᵠ16*40m | ᵠ22*40m | ᵠ28*45m | ᵠ28*45m*2 | |
| Connection size | ᵠ16 ball mouth | ᵠ16 ball mouth | ᵠ16 ball mouth | ᵠ16 ball mouth | |
| Compressor | DORIN | DORIN | DORIN | DORIN | |
| Operation Panel | 7-inch color touch screen controller, temperature curve record, data export to excel format. | ||||
| Control system | Standard:single-ship microcomputer controller, Stepping control; Set temperature difference of refrigeration on&off.Optional:SIEMENS S7-200PLC&module | ||||
| Condensor | KAORI Plate heat exchanger | ||||
| Intermediate heat exchanger | KAORI Plate heat exchanger | ||||
| Drying filter core | Danfoss | ||||
| Expansion valve | Emerson | ||||
| FDF | Emerson | ||||
| Oil separator | Emerson | ||||
| Pressure protector | Emerson | ||||
| Reservoir | Standard: RSP Optional: Emerson | ||||
| Sight glass | Standard: SANHUA Optional: Danfoss | ||||
| Refrigeration ball valve | Standard: SANHUA Optional: Danfoss | ||||
| Electric | Schneider AC contactor, Schneider intermediate relay | ||||
| Refrigerant | R404A R508B R14 R50 mixed refrigerant | ||||
| 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. | ||||
| Piping material | Copper pipe | ||||
| Case material | SUS 304 | ||||
| Water-cooled type W (cooling water at 20℃) | 3m³/h | 4m³/h | 6m³/h | 10m³/h | |
| Power | 380V 50HZ 12kw | 380V 50HZ 16kw | 380V 50HZ 24kw | 380V 50HZ 36kw | |
| Connection | 750*750*1750 | 750*750*1750 | 1000*950*20500 | 1200*1100*2050 | |
| Weight | 350kg | 400kg | 600kg | 950kg | |
| db | within 75db | within 80db | |||
The maintenance of an ultra low temperature freezer is very important for normal usage and prolonging its life. If the inaccurate temperature control often results in the damage of the protected objects, which will greatly affect the experimental results, thus affecting the normal progress of the research work.
1. Clean it once a month to ensure its cleanliness
Remove the dust on the inside and outside of the refrigerator and accessories by a dry cloth. If the refrigerator is too dirty, use a neutral detergent and rinse thoroughly after cleaning. But remember not to flush the upper and inside of the refrigerator, otherwise, the insulating material will get damaged and fail later. Lubricants are not necessary for compressors and other mechanical parts. The cleaning of an electric fan in the rear of the clean compressor must be careful. After the cleaning, make a safety check to ensure that the plug of the fridge is inserted and not virtual connected. There is no abnormal heat in the plug, as well as the power cord and distribution wire on the back of the refrigerator, are not broken and nicked.
2. The cooling of the refrigerator is not sufficient
Check whether there is ice on the surface of the evaporator; whether or not the door of the refrigerator is over - frequency; whether the back of the refrigerator is in contact with the wall; whether or not there is too much stuff on.
3. The refrigerator is too noisy
Check whether the baseboard and the refrigerator are stable if not, adjust the movable screws to make the four corners firmly support on the floor. And make sure whether the back of the refrigerator is touched by something.
Contact Lneya for more.
1. Clean it once a month to ensure its cleanliness
Remove the dust on the inside and outside of the refrigerator and accessories by a dry cloth. If the refrigerator is too dirty, use a neutral detergent and rinse thoroughly after cleaning. But remember not to flush the upper and inside of the refrigerator, otherwise, the insulating material will get damaged and fail later. Lubricants are not necessary for compressors and other mechanical parts. The cleaning of an electric fan in the rear of the clean compressor must be careful. After the cleaning, make a safety check to ensure that the plug of the fridge is inserted and not virtual connected. There is no abnormal heat in the plug, as well as the power cord and distribution wire on the back of the refrigerator, are not broken and nicked.
2. The cooling of the refrigerator is not sufficient
Check whether there is ice on the surface of the evaporator; whether or not the door of the refrigerator is over - frequency; whether the back of the refrigerator is in contact with the wall; whether or not there is too much stuff on.
3. The refrigerator is too noisy
Check whether the baseboard and the refrigerator are stable if not, adjust the movable screws to make the four corners firmly support on the floor. And make sure whether the back of the refrigerator is touched by something.
Contact Lneya for more.
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