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• Product structure and composition: The product adopts a refrigeration system attached to the 
thermal insulation box which is microcomputer controlled with direct cooling design, and a rack type 
design of evaporator.

• Before putting the articles into the freezer, make sure fi rstly that the design temperature is reached 
inside the freezer, then put in the articles in batches. The articles put in every time shall not exceed 
1/3 of the internal capacity so as to prevent temperature increase.

• The indicated temperature value of the freezer is the value indicated inside the freezer at the 
temperature sensing probe. Occasionally the indicated temperature has a certain difference with 
the actual temperature in the central part of the freezer, but it will gradually approach to the true 
temperature.

• Use the diluted mild detergent to clean the freezer. Do not use brushes, acid, gasoline, soap 
powder, polishing power or hot water to clean the freezer as the above materials may damage the 
painting surface as well as the plastic and rubber parts and components. Take particular care not to 
use volatile solvent such as gasoline to wipe plastic and rubber parts and components.

• Cut off the power of the freezer when it is not in service for a long time.

• Every time when putting in and taking out the articles, please try to reduce the door opening time so 
as not to cause larger fl uctuations of the temperature and humidity inside the freezer.

• After opening the door, the temperature inside the freezer will rise steeply in a short time, this is 
normal and the temperaute will restore within one hour after the door is closed.

• The freezer is equipped with security door lock. Please keep the key properly. Once the key is lost, 
the door body of the freezer will not opened.

• Lock of the upright freezer

The lock of the upright freezer shall be locked when the freezer is powered on,or it will cause cold air 
leakage and frosting which will affect the performance.

• Cleaning and Defrosting of the freezer

1) The freezer can be cleaned with light soapy water. Never use brushes, acids, gasoline, soap 
powder, polishing powders or hot water to clean a unit as they will damage the unit. Never wipe the 
unit and components with volatile solvent such as gasoline.

2) As a freezer works for some time, the interior will form a layer of frost. When the frost gets too 
thick, the refrigeration effect will be reduced. If the thickness of the frost reaches about 5 mm, use the 
provided frost-removal shovel to scrap the frost off the wall.

3) Prior to a defrost operation; transfer the stored products to a safe place.

4) During a defrost operation, do not use any sharp object such as knife, cold chisel or screwdriver to 
scrap the ice and frost. This method can damage the evaporator and the freezer.

Precautions for use

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The following situations are normal with the freezers.
• When a unit is initially started, the refrigeration process might take some time. Thecompressor tends  
to be a bit louder.
• During the normal operation of the unit, there may be a sound of liquid fl ow. That is a normal sound 
of the refrigerant fl ow.
• The  displayed temperature  and the  center temperature  of  the  unit are not  necessarilythe same.  
Over time, they tend to approach each other.
• Behind the outer skin of the freezer, there are heat-dissipating tubes. When the unit operates,  the 
surface of the outer skin of the unit might be warm to touch.

Summary of Contents for DW-25L92FL

Page 1: ...lity checker Model DW 25L92FL DW 25L92SF DW 30L278FL DW 30L278SF Laboratory Deep Freezer with explosion proof interior Operation manual Our company reserves the right to interpret the Operaiton Manual Read the Operation Manual carefully before using your appliance Keep the Operation Manual in a safe place Appearance color and layout of the door may vary Translation of the original instruction The ...

Page 2: ...29 ...

Page 3: ...uality hermetically sealed compressors and other components for a high efficiency performance User friendly design with microprocessor control for smart and carefree operation adjustment not needed High performance thermal insulation for excellent temperature protection The product application scope Temperature setting range 10 25 30 Computer control and temperature numberic display with temperatur...

Page 4: ...pray coated steel plate Permanent anti static sheet PS plate Condenser Evaporator Wire and tube type plate type Temperature Control Microprocessor controlled Refrigerant R600a 52g R290 105g Net weight 46kg 115kg Setting temperature range 10 25 10 30 Voltage Input power 220V 240V 50Hz 160W 220V 240V 50Hz 330W Anti shock Safety Classification I I Climate type Noise Level Lp 4 27dB A 4 40 dB A Foaming...

Page 5: ... cause a fire or electric shock If it is required to lengthen the power cord the section area of the lengthen cord must not be less than 2mm2 and the length shall not be longer than 3m Otherwise it may cause a fire or electric shock The power cord of this freezer is provided with a three wire earthing plug complying with the standard 10A three wire earthing socket Never cut or remove the earting pin...

Page 6: ...ing toxic hazardous or radioactive articles please use the freezer in a safety zone Improper use may bring hurt to human health or environment If the freezer is left unused for a long time in an unattended area make sure that children will not approach the freezer and the freezer door will not be closed completely Disposal of discarded freezer shall be conducted by the relevant personnel The appli...

Page 7: ... material in sealed container before storing into freezer When restarting the freezer after a power failure of power off it is required to check the setting of the freezer Change of setting may spoil the articles stored Once the power of the freezer is cut off wait for over 5 minutes before it is reconnected so as not to damage the compressor or the system Put on your gloves at time of maintenance...

Page 8: ...our after the door is closed The freezer is equipped with security door lock Please keep the key properly Once the key is lost the door body of the freezer will not opened Lock of the upright freezer The lock of the upright freezer shall be locked when the freezer is powered on or it will cause cold air leakage and frosting which will affect the performance Cleaning and Defrosting of the freezer 1...

Page 9: ...ise it may be triggered by the rapid cooling and shrinkage of the internal components inside the equipment and it shall be cooled gradually to avoid excess in decrease of temperature in a short time FAQ 7 DW 25 30 L 92 278 FL SF Deep Freezer Character Point Temperature 25 30 Upright Storage Volume FL Explosion proof type with electrostatic protection SF Explosion proof type without electrostatic p...

Page 10: ... the power cord in emergency No articles shall block out the air vent of the freezer Product Installation 21 Anti static operating instruction 1 clean plastic parts with a dramp cloth only 2 Do not use a dry cloth to clean plastic parts 3 Danger of sparks due to electrostatic discharge 4 Warning potential electrostatic charging hazard see instructions In order to prevent an electric shock or perso...

Page 11: ...ature display area Impulsive sound alarm Lower limit alarm for temperature If the temperature sensed by the sensor is lower than 50 The alarm light will flash and ELo will be shown on the temperature display area Impulsive sound alarm Power failure alarm Power failure of the freezer The inner temperature will be shown for 0 5s and disappear for 0 5s on the temperature display area by turns for 24h ...

Page 12: ... delay t1 default to 15min Communication fault The display board and the power board are unable to send and receive data for 5 times continuously E03 Alarm indicator flashes and E03 code is displayed Buzzing alarm Sensor is abnormal Fault occurs on the main sensor in freezer E04 Alarm indicator flashes and E04 code is displayed Buzzing alarm Door ajar alarm The door is opened or not closed tightly E...

Page 13: ...e will be displayed after start When inquiry if press Fn for 1 second this record will be deleted the value will be changed to measured value by current sensor 2 Use and to roll the parameter Ho1 or Lo1 3 Press SET to confirm the parameter and then display the value of parameter 4 Press SET to return to the displayed parameter 5 Use and again to roll for inquiring another parameter 6 Press SET to c...

Page 14: ...me so as to prevent electric shock leakage of electricity or fire due to aging of the power cord If the freezer is left unused for a long time in an unattended area make sure that childrenn will not approach the freezer and the freezer door can not be closed completely 17 DW 30L278FL 278SF Power on indication Indicates that power is On Locking indication Indicates that the screen have been locked R...

Page 15: ...or reduced by press of button or button Press Set button after reaching the set value the parameter will be changed and saved Press Alarm button to exit the parameter setting and display the current inner temperature Parameters code Parameter meaning Min value Max value Unit Default value Ts Control temperature setting 30 10 25 ALH High temperature alarm value setting Ts 1 Ts 6 20 ALL Low temperat...

Page 16: ...14 DW 30L278FL 278SF Control panel Pad lock Drawer Lock Caster and leveling leg Lock kits 15 DW 25L92FL 92SF DW 30L278FL 278SF Thermostat FN SET ...

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