ULTRA-LOW TEMPERATURE FREEZER
Instruction Manual
Model : LF-300C
Please read this manual carefully before using the instrument
Labnics Equipment
Thank You for Buying a LABNICS Freezer!
For your personal safety and better performance of the unit, please read this Instruction
Manual thoroughly and save it properly for future reference.
Failure to read, understand and follow the instructions given in this manual may result in
damage to the unit, injury to operating personnel and poor equipment performance.
The material in this manual is for information purposes only. The contents and the product it
describes are subject to change without notice. LABNICS makes no representations or
warranties with respect to this manual.
Always take precautionary measures (clothing, gloves, goggles etc.) while using the
equipment. Always dissipate extreme cold or heat and wear protective clothing.
Always follow good hygiene practices.
Each individual is responsible for his or her own safety.
SAFE CUE:-
Please read this manual carefully while using our machine for the first time.
The one who operates Ultra Low temperature Freezer should be trained and authorized.
The maintenance of equipment should be made by LABNICS or their agent.
If you have some query whose solution is not given in the manual, then please contact
LABNICS or agent, and ask the right way to solve it.
It is better to use LABNICS fittings, because in case customer use other's spare parts then
LABNICS will not take any responsibility for the malfunction and damage caused to the
equipment. But customers can contact LABNICS.
Should check and keep proper maintenance of Ultra low temperature freezer at the proper
time.
Avoid storing alive life, flowers and others which are not fit for the low temperature.
To ensure proper ventilation and functions of freezer, keep body back and both sides of
freezer away from the wall at least 30cm apart and should not be blocked by any barrier.
When working with Ultra Low temperature Freezer, inner temperature remains very low. So
do wear glove while touching the cover board.
If the power gets shut off, wait for 5 minutes to connect again so as to prevent compressor
damage.
Table of Content
CHAPTER CONTENT PAGE No.
1 Schematic Picture and Description 1
2 Pre-installation 1
3 Operation Direction 2
3.1 Using For the First Time 2
3.2 Adjust the Temperature 3
4 Defrost, Unused, Maintenance 4
4.1 Defrost 4
4.2 Maintenance 4
5 Service After Sale 4
6 Technical Information 5
7 Circuit Diagram 5
8 Service Report 6
CHAPTER1. SCHEMATIC PICTURE AND DESCRIPTION:-
Handle
Body
Door Body
Ultra-low temperature freezer is designed to store materials under very low temperature condition for hospitals,
epidemic stations, blood banks, research institutes, universities, biological pharmaceutical industries and gene
engineering, etc. The internal temperature in cabinet can be easily adjusted through the keys on control panel. All
operations are convenient and reliable.
CHAPTER 2. PRE-INSTALLATION:-
1) How to Transport: Pick up the unit from the bottom of tank and a slant with 45° is acceptable. All
transportation should be done carefully.
2) Remove all wrappers.
3) Check accessories and documents according to package list.
4) Clean the unit thoroughly before any operation.
5) Installing Location: Do not keep the unit in direct sunlight or near heating diffusers, radiators, or other
sources of heat. The ambient temperature should not exceed 32 C. A minimum 20cm space on the sides,
rear and top should be provided for better air circulation and heat discharge. Avoid location where there is too
much cold, high humidity and can be easily splashed by water.
Notice: While moving the freezer, wheel should not damage the line.
Notice: Take away the packing base before running the freezer.
Notice: After connecting the power supply, do not keep the goods immediately in the freezer. Please wait for
about 12 hours
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6) Freezer working conditions are:-
Environment temperature: 10 C to ~ 40 C.
Relative Humidity: ≤80%.
No strong shake and caustic gas around.
No sunshine and other cold/hot power effect.
Ultra Low Temperature Freezer Working Rule: Running intermission
Safety Introduction:-
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P3 : N and E ports can't connect
1) Power supply: This LF-300C freezer is designed for operating under 220V/50HZ AC power supply. The unit
can normally start under the voltage varying from 198V to 242V.
2) Must provide one single exclusive plug receptacle with credible grounding to the unit.
3) Inflammable and explosive materials, as well as high corrosive acid and alkali must be strictly prohibited in
cabinet.
4) Keep the keys properly, so that the children's can't be able to open the back door which may result in
unexpected injury.
5) To avoid cold injury, please place and remove goods with protective gloves.
CHAPTER 3. OPERATION DIRECTION:-
3.1 When Using For the First Time:-
1) Please use the warm water and then little scour it to clean the freezer.
2) To adjust the freezer at -40 C, connect the power, compressor will start after 3 minutes. Now 30 minutes
later, the freezer temperature drops and it mean the refrigeration system is normal. We advice you to
first adjust the temperature at -35 C, then after stopping the machine, set temperature at -40 C.
3) Keep the goods in freezer only after the temperature drops.
4) To save the power, please don't often open and close the door.
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3.2 Adjust the Temperature:-
Display Temperature
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set
How to set the temperature:-
5 seconds after turning on the power, screen will display the current temperature. Please follow the following steps
to adjust the temperature:-
The control panel can adjust manually, step as A-B :
Press "Set" 2 seconds, will shows the current temperature and glitter.
Through 5 or 6 keys you can increase or decrease the temperature, then press the "set" key to
confirm the temperature. If after 30 seconds it doesn't get confirm, it means that the temperature set is
invalid, and will automatically show the original temperature.
High/low temperature alarm: The factory original figure is 10, it mean that the alarm will lights up if the
temperature is higher or lower than 10 C, and the alarm is also equipped with the buzzer. (Press "set"
which can stop the alarm). It is quite normal, if the alarm buzzes when used for the first time till
temperature comes down and then alarm will get cancelled automatically.
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P4 is the direction to show compressor starting: "1" lighting all the time: means the compressor
is running. 1 Glittering Durative: means the compressor is still waiting to get started. (Connect the
power and start after 3 minutes). If compressor glitters twice and halts once, it means the compressor is
running all the time.
Press "3" key for 5 seconds for continuous activation or stop the compressor. For regular working of
freezer and to provide protection to compressor, don't press the "3" beyond 5 seconds.
Press "4" key for 5seconds to close the freezer, within 35minutes the compressor stops and the screen
* will start lighting and thus show the temperature at a time when freezer is closed.
LABNICS hold the right to update or improve the products.
If you have not entered the other parameters carefully, then please don't change them randomly.
(Do not use the "set" key). Connect the power again.
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CHAPTER 4. DEFROST, UNUSED, MAINTENANCE:-
4.1 Defrost:-
If there is some frost on the surface of chamber for a long time then it will decrease the performance of
freezer. So if the thickness of frost is more than 10mm then some defrost operations are recommended.
After the freezer working for 192hours, system will get automatic defrost.
4.2 Maintenance:-
Do not keep heavy goods in the freezer so as to prevent the body.
Should clean the freezer at regular intervals. (For safety purpose, please draw out the power pin first).
Use soft and warm cloth to clean the freezer inner and outer surface.
Please use the scour to wipe and then clean with soft cloth.
Once the freezer starts working it is best to use it continuously.
DO NOT sprinkle water on the faces of cabinets, which may decrease insulating property of electric
parts and rust metal parts.
DO NOT use hot water, corrosive cleanser and organic solvent!
Note: Prohibit the children for playing games around the freezer.
CHAPTER 5. SERVICE AFTER SALE:-
Some unexpected failures may arise during running. Please pay attention to the running status of your LF-300C
freezer. If any exceptional case arises, please check and solve it according to the following introductions. If the
problem is not solved well, please contact our service center for details.
Problem Possible Cause
ULT freezer does not operate Power outage has occurred.
The plug is bad or not securely plugged-in.
Fuse is blown.
Voltage is too low or too high.
Compressor does not work Power in control panel is off.
Temperature setting is wrong.
Temperature is higher than setting Frost in inner wall is too thick
The door is not closed properly or is opened too frequently.
Overfull materials are put into chamber.
Ambient temperature is too high.
Too great noise Freezer is not leveled well.
Freezer leans upon the wall.
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Below are normal operations:
There are some light clashes when the compressor starts up and stops.
During rainy and watery season some frost may accumulate on the surfaces of cabinets. Please clean it with
dry rag.
DO NOT open the door twice within 5 minutes. This may lead the hot air into the interior of freezer and the
door may be difficult to open because of a negative pressure due to a sharp decrease of temperature of this
part air.
CHAPTER 6. TECHNICAL SPECIFICATIONS:-
Model No. LF-300C
Valid Capacity (L) 135
Temperature -10 C to -40 C
Input Power (W) 200
Size (D x W x H) mm 623 x 544 x 1123
Weight (Kg) 54
Catalog No. 04590303
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CHAPTER 7. CIRCUIT DIAGRAM:-
Power Supply :
L
N
Microprocessor-based
Controller
Thermometer
Compressor
M1
Start Relay
Run Cap
M2
Cool Fan
All technical parameters and circuit diagram in nameplate are final ones for your units.
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SERVICE REPORT
Customer’s Address :
Contact Person / Designation :
Date
Nature of Problem :
Observation & Action Taken :
From
Time
To
System
Configuration
Model Serial No.
Tel.No.:
Fax No.:
Weekly Off.:
Dept.:
Date :
Status : OK
Installation
Demonstration
Maintenance
Repairs
Application
Calibration
Validation
SR. No.
Not OK
Warranty
Contract
Billable
Courtesy
Customer’s Remarks :
Parts Replaced :
Parts Recommended / Action Required : Yes
Service Engineer’s Name & Signature
No
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Requisition Number :
Customer’s Name, Signature, Date & Stamp
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