USA Lab DW-86L280 User manual

DW-86L Series Ultra
Low Temperature
Freezer Manual

1
ThanksforselectingDW-86LSeriesUltraLowTemperature
Freezer.Wewouldprovidethebestproductandservicetoyou.
Failuretoread,understandandfollowtheinstructionsinthis
manualmayresultindamagetotheunit,injurytooperating
personnel,andpoorequipmentperformance.
CAUTION!
Allinternaladjustmentsandmaintenancemustbeperformedbyqualifiedservice
personnel.
Thisappliancecanbeusedbypersonswithreducedphysical,sensoryormental
capabilitiesorlackofexperienceandknowledgeiftheyhavebeengivensupervision
orinstructionconcerninguseoftheapplianceinasafewayandunderstandthe
hazardsinvolved.
Children shall not play with the appliance.
Cleaningandusermaintenanceshallnotbemadebychildrenwithoutsupervision.

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DW-86L Series...............................................................................................................................Warnings
Alwaysusetheproperprotectiveequipment(clothing,gloves,etc).
Alwaysusedissipateextremecoldorheatandwearprotectiveclothing.
Always follow good hygienepractices.
Each individual is responsible for his or her own safety.
Potential electrical hazards. Only
qualified persons should perform
procedures associated with this symbol.
Hot surface(s) present which may causeburns
to unprotected skin or to materials which may
be damaged by elevatetemperatures.
Extreme temperature hazards, hot or cold.
Use special handling equipment or wear
special, protective clothing.

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DW-86L Series...................................................................................................................Table of contents
1. Installation andoperation
2. Productdescription
3. Operation
4. Cleaning andmaintenance
5. Maintenance
6. Disposal

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DW-86L Series..................................................................................................................................Services
If the user's manual is lost or damaged, you can through our website to download or contact us by E-mail.
DW-86L Series....................................................................................................Installation and operation
1. Installation andoperation
1.1 SafetyInformation
All electrical work must be executed by suitably qualified persons. When using any electrical
appliance, safety precautions must always be observed.
◆Do not use this appliance for other than its intended use. This product is intended for use as a
beverage Low Temperature Freezer. Consult your supplier foralternatives.
◆Do not cover the front grille or block the rear air entry by placing object up against thecabinet.
◆Please close attention, when used by or near children, infirmpersons.
◆Ensure adequateventilation.
◆Do not probe anyopenings.
◆Do not touch any moving parts or hotsurfaces.
◆Regulations require that all electrical work be carried out by authorized persons. For your own
safety and that of others please ensure this isdone.
◆Do not overload the power supply. Always ensure on the rating label. The rating label is
located.
If have any problem, please consult a qualified electrician. Caution: Never use extension
leads or multiple adaptors.
◆Ifthemainssupplycordisdamaged,itmustbereplacedbythemanufacturer,itsserviceagent or
similarly qualified and skilled persons in order to avoidhazard.
◆Disconnect the mains power supply before attempting any cleaning, removal of any covers, or
maintenancework.
◆Do not store explosive substances, such as aerosol cans with flammablepropellant.
◆Warning: Do not use mechanical devices or other means to accelerate the defrosting process.
Defrosting is performedautomatically.
◆Warning: Do not damage the refrigerationcircuit.
◆Warning: Do not use electrical appliances inside the storage compartment of thisappliance.
1.2 Assembly
◆Remove the appliance from the packaging and peel off any protective film from allsurfaces.
◆Fittheshelfsupportclipsontotheshelfsupportstrips,makingsurethattheclipsforeachshelf are of the
same height and that they are securely engaged on the supportstrip.
◆Unwrap each shelf carefully, to prevent damaging their protective coating or surfacefinish.
◆Position the shelves onto theclips.
Please dispose of all waste packaging
appropriately and in accordance with
all local recycling laws.

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DW-86L Series....................................................................................................Installation and operation
1.3 Positioning theproduct
◆Please position the cabinet carefully being careful not to bumpit.
◆The power supply flex exits the product at the bottom right hand side (as viewed from the
front).For ease of access; the flex should be retrieved prior to positioning the product in its
finallocation.
◆The maximum recommended ambient temperature for this product is32°C
◆Avoid positioning the appliance in direct sunlight or dampareas.
◆Allow adequate space for the door(s) to fullyopen.
◆Ensure that this product is positioned on a level surface, so as to allow the door(s) to shut and
seal correctly, as well as to allow proper drainage from the evaporator tray, to prevent any
overflow. If necessary, adjust the screw feet of the appliance to make itlevel.
1.4 Ventilation
◆All models must have clear and unobstructed ventilation from the entire surface area of the
front grille.
◆The 2 and 3 door models may be built into an enclosure without the need for ventilation other
than at thefront.
◆The single door Low Temperature Freezers must have a minimum ventilation space of 50mm
at sides andrear.
◆Dimensions of the space to be provided for the appliance are referenced on page 12 of this
manual.
◆Dimensionsandpositionofthemeansforsupportingandfixingtheappliancewithinthisspace are
referenced on page 12 of thismanual.
◆WARNING: Failure to provide the minimum ventilation space will harm the
performance of your Low Temperature Freezer could cause fire and will invalidate the
warranty.
◆WARNING: Keep clear of obstruction all ventilation openings in theappliance
WARNING
Do not overload the power supply. Always ensure
that the power supply is adequate for the electrical
requirements specified on the rating label and
never use extension leads or multiple adaptors.

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enclosure or in the structure for building in.
◆WARNING: You are must not store volatile, flammable and explosive materials inside
thisRefrigerator.
1.5Temperature controller
1.5.1 Description
Digitalcontroller is used for medical and laboratory uses to design for simple refrigeration equipment
controller. It measures the temperature in the cabinet, with temperature control (can be set to cooling or
heating mode), the defrost control, over-temperature alarm, power failure detection alarm, remote
alarm, maximum and minimum temperature records and other functions.
1.5.2 Indicator light status description
Indicator Light
Symbol
Status
Meaning
Setting
Set
ON
Parameter setting
OFF
Status of temperature measuring and
controlling
High temperature compressor work
indicator light
ON
High temperature compressor work
OFF
High temperature compressor stop
FLASH
High temperature compresso time delay
Low-temperature compressor work
indicator light
ON
Low-temperature compressor work in
non-forced refrigeration mode
OFF
Low temperature compressor is closed
in non-forced refrigeration mode
FLASH
Forced refrigeration mode
Capillary heating indicator light
ON
Capillary heating starts
OFF
Capillary heating is closed
High temperature alarm lamp for
condenser (high temperature press circuit)
E2H
ON
High temperature alarm of secondary
system condenser
High temperature protection indicator for
condenser (high temperature press circuit)
E2P
ON
High temperature protection of
secondary system condenser
The door opens alarm indicator light
Erd
ON
Door open alarm
Power light
ON
Grid power supply anomaly
OFF
Normal power supply

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1.5.3 Button Description
Button
Function
SET
Enter the status of parameter setting
Switch between menu and parameter
▲(UP)
Adjust menu and parameters
After 3s, upload the setting parameters to the copy card
▼(DOWN)
Adjust menu and parameters
Continue to press down for 3s, download setting parameters from copy card
RST
Exit from parameter setting
Continue to press for 3s to force the stop capillary heating output
NO BUZZER
Clear alarm
When the main power supply is not out of power, the mandatory cooling mode will
be activated for 10s
1.5.4 Functions and Parameters
1.5.4.1 I n the status of temperature measuring and controlling, press Set key for 3s to enter user menu,
it display the code St, then press Set key again, display the value of St. it could be modified by pressing
the key UP or DWON.
1.5.4.2When the St code displays, press the UP button to display the A8 code, and the A8 parameter
value is displayed after the SET key, which can be modified by manipulating UP or DWON keys.
1.5.4.3 When the A8 code is displayed, press the UP button to display the A9 code, and the A9
parameter value is displayed after the SET key, which can be modified by manipulating UP or DWON
keys.
1.5.4.4When the A9 code is displayed, press the UP key, display the Po code, press the SET key to
display 00, and then enter the control menu password through the UP or DOWN key. Once again, press
SET to confirm the password entry, the controller automatically verifies the correctness of the
password, and when the password is verified, it is entered into the management menu. At this time, the
UP or DOWN key can be used to select other parameters including St, A8, A9 and Po, otherwise, the
controller will only stay in the parameters of St, A8, A9 and Po, and cannot display other parameter
items. After selecting the menu item, press the SET key to enter the current menu item parameter
setting, adjust the parameter value according to the UP or DOWN key, and then press the SET key to
return menu selection.
1.5.4.5Under the status of parameter setting, pressRSTkey or no key operation within 30s, it will exit
from parameter setting and automatically save the current parameter value.
1.5.4.6 The password entry of the administration menu is valid. After the parameter setting is set, the
correct password must be entered again after the adjustment.
1.5.4.7 When the controller is in normal measurement and control status, it can be forced to start the
capillary heater relay by pressing the RST key for 3s.
1.5.4.8 When the main power supply is not without power, press NO BUZZER button to activate the
forced cooling mode for 10s.
1.5.4.9When the controller appears, the buzzer calls, and there are two situations where the buzzer
stops chirping:
1.5.4.9.1 After all the alarms are lifted, the buzzer stops chirping.
1.5.4.9.2Press the NO BUZZER key and the BUZZER will stop ringing for ten minutes (if the fault is not
removed within ten minutes, the alarm will ring after ten minutes). If a new alarm comes up after all the
alarm is lifted in ten minutes, the buzzer will call again immediately. It can be modified by modifying the
value of the A4 (10 minutes by default) to stop the BUZZER when the NO BUZZER key is pressed.

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1.5.5 Temperature parameter setting
Parameters
Description
Min
Max
Unit
Default
St
Temperature set value
C13
C14
oC/oF
-80
A8
Over temperature alarm upperdeviation
0.1
20
oC/oF
10
A9
Over temperature alarm lower deviation
0.1
20
oC/oF
10
C13
Set Minimumtemperature
-95
C14
oC/oF
-90
C14
Set Maximum temperature
C13
85
oC/oF
-50
C1
Temperature difference
0.1
20
oC/oF
0.4
Parameter description:
St Set temperature
User set the shutdown point temperature.
C13Theminimumset temperature
Permissible the minimum set temperature (St)
C14The maximum set temperature
Permissible the maximum set temperature (St)
C1 Difference in temperature
When the temperature <= St, the compressor stops working; when the temperature> = St + C1, The
compressor work.
1.5.6 Alarm Code
Alarm
code
Fault Description
E1
Tank temperature sensor failure
E2
Condensing sensor fails
E3
Ring temperature sensor failure
E4
Evaporator sensor failure
E1H
Tank temperature super high temperature alarm
E1L
Tank temperature superLow temperature alarm
E3H
Ring temperature and ultra high temperature alarm
E3L
Ring temperature and ultra low temperature alarm
E2H
High temperature alarm of condenser
E2P
High temperature protection of condenser
Erd
Door open alarm

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DW-86L Series..............................................................................................................Product description
2. Product description
Model
DW-86L280
DW-86L360
DW-86L480
DW-86L590
Technical Data
Cabinet type
Vertical
Vertical
Vertical
Vertical
ClimateClass
N
N
N
N
CoolingType
Direct Cooling
Direct Cooling
Direct Cooling
Direct Cooling
DefrostMode
Manual
Manual
Manual
Manual
Refrigerant
CFC-Free,Mixing
CFC-Free,Mixing
CFC-Free,Mixing
CFC-Free,Mixing
Performance
Temperature Range
(°C)
-40~-86
-40~-86
-40~-86
-40~-86
Control
Temperature Control
Microprocessor Control Board
Display
LCD + Dual LED
Material
Interior
Galvanized steel powder coating/Stainless Steel
Exterior
Galvanized steel powder coating
Shelf
Stainless steel
Door
Solid Door
Electrical Data
Voltage/Frequency
220V/50Hz &110V/60Hz
Dimensions
Capacity (L)
280
360
480
590
External
Dimension (W/D/H )
620*650*1920
(mm)
620*780*1920
(mm)
780*780*1920
(mm)
920*780*1920
(mm)
Functions
High/low
Temperature Alarm
Y
Y
Y
Y
High Ambient Temp
Y
Y
Y
Y
RemoteAlarm Contact
Y
Y
Y
Y
HotCondenser
Y
Y
Y
Y
PowerFailure
Alarm
Y
Y
Y
Y
High/low Voltage
Alarm
Y
Y
Y
Y
Sensor Error
Alarm
Y
Y
Y
Y
Low Battery
Alarm
Y
Y
Y
Y
Door Ajar
Alarm
Y
Y
Y
Y
Accessories
Shelf
3
3
3
3
Test Hole
Y
Y
Y
Y
Racks&Boxes
Optional
Optional
Optional
Optional

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3. Operation
This product is designed to operate at a recommended ambient temperature of 32℃ and as
such ,is categorized as a climate class 3 product.
3.1 Access topower
◆Close the door of theappliance.
DW-86L Series................................................................................................................................Setting
3.2 SettingTemperature
◆Press down to decrease the settemperature.
◆Press up to increase the settemperature.
DW-86L Series............................................................................................Cleaning and Maintenance
4. Cleaning
◆WARNING: You must disconnect the plug before cleaning ormaintenance.
◆Do not use abrasive cleaning agents which may scratch and harm the delicate interior finishes
of yourappliance.
◆Always wipe dry aftercleaning.
◆The agent or qualified technician must carry out repair ifrequired.
4.1 CleanthefilterofsingledoorLowTemperatureFreezer
◆The filter must be kept clean and free of dust at all times. It is recommended that the cleaning
routinebeconductedatintervalsappropriatetothespeedofaccretionofdustonthefilterand
inanyeventatleasteverymonth.Failuretokeepthefiltercleanwilldamagetherefrigeration
system and invalidate the warranty.
◆Pull the filter upwards to remove it from its locating place under the glassdoor.
◆Use a vacuum cleaner, preferably with a rush attachment, to remove built updust.
◆Refit the filter to its original location to ensure continual efficient operation ismaintained.
4.2 Clean thecondenser
◆The condenser must be kept clean and free of dust at all times. It isrecommended that the
cleaningroutinebeconductedatintervalsappropriatetothespeedofaccretionofdustonthe
condenser. Failure to keep the condenser clean will damage the refrigeration system and
invalidate thewarranty.
◆WARNING: The condenser is a delicate component and is easily damaged. Never
use a stiff brush or sharp objects to clean it. Never usewater.

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5. Maintenance
If your appliance develops a fault, please check the following table before making a call to the
helpline.
Fault
Probable Cause
Action
The appliance is not working
The unit is plugged in correctly
Check the unit is plugged in
correctly
Plug or lead is damaged
Call our agent or qualified
technician
Power supply
Check power supply
Internal wiring fault
Call our agent or qualified
technician
The appliance turns on, but the
temperature is too high or too
low
Filter or condenser blocked with
dust
Clean filter or condenser
Doors are not shut properly
Check doors are shut and
seals are not damaged
Appliance is located near a heat
source or air flow to the
condenser is being interrupted
Move the appliance to a
more suitable location
Ambient temperature is too high
Increase ventilation or
move appliance to a Low
Temperature Freezer
position
Insufficient airflow to the fans
Remove any blockages to
the fans
Appliance is overloaded
Reduce the amount stored
in the appliance
Factory default parameters
adjusted
Call our agent or qualified
technician
The LED lights not working
Led light short Leaded damage
Call our agent or qualified
technician
The appliance is unusually loud
The appliance is touching a
neighboring object
Check installation position
and chan
ge if necessary
The appliance has not been
installed in a level or stable
position
Check installation position
and change if necessary
DW-86L Series.................................................................................................................................Disposal
6. Disposal
If in any doubt, please consult your Local Authority, contact us or contact the reseller from whom
you purchased the appliance.