SO-LOW MV Series User manual

To reduce the risk of fire, electric shock or injury to persons using this freezer, read all instructions and follow
basic safety precautions before using the unit, including the following:
Do not modify the plug provided with the unit. If it will not fit the outlet,
have a proper outlet installed by a qualified electrician.
Do not position equipment so it is difficult to disconnect from the power supply.
While under warranty, do not attempt to repair or replace any part of the
freezer for servicing without first contacting the So-Low Service Department.
BEFORE CALLING THE MANUFACTURER’S TECHNICAL SUPPORT DEPARTMENT
Please have the model number of the unit, box identification number, and serial number ready as
well as the problem description. The model, serial number and box id number can be found on
the serial tag, which is located on the interior left upper wall, or back of the unit.
SAVE THESE INSTRUCTIONS

Table of Contents
1. Application Notes
1
2.Safety Instructions
2
3.Precautions in Use
4
4.Installation and Commissioning
4
4
.1
Installation Environment
4
4
.2
Installation Site
4
4
.3
Preparation before Use
5
4
.4
First Power-on
5
4
.5 Operation after Power Failure
6
5.Product composition and overview
7
6.Operating Instructions
10
6.1 Function Introduction
10
6.2 Optional function
17
7.Maintenance and Service
19
7.1 Equipment Maintenance
19
7.2
Equipment Discontinuation
19
7.3 Maintenance, Replacement, and Recovery of Rechargeable Batteries
19
8.Troubleshooting and Maintenance Services
20
9.Specifications
21
10.Packing List
22
11.Electrical Schematic Diagram
22

1.Application Notes
Thank you for choosing and using our products! For your safe and convenient use and reasonable
maintenance of the equipment, please read the Operation Instructions carefully before use and keep it properly
for reference
The equipment operator can copy some chapters of this operation manual, but only for internal use, for
example, to instruct the user how to deal with emergencies. These chapters are clearly marked in the catalog
of the manual.
So-Low Environmental has obligation and responsibility for any instrument damage caused by the user's failure
to use the equipment according to the instructions or the method specified by the manufacturer.
Due to the rapid improvement of our products, the functions described in the instructions may be inconsistent
with those of the products you purchased. Please refer to the physical functions.
Please carefully read the Attention and Safety Precautions (in 2. Safety Instructions).

During transportation or use, no violent vibration or collision is allowed, and the
refrigerator shall be kept away from rain. Store in a clean room with humidity of no more
than 80 %, no corrosive gas and good ventilation.

Pharmacy/Medical refrigerators (hereinafter referred to as equipment) can only be
operated by trained and authorized personnel.

Maintenance of the equipment can only be completed by us, or an agent
authorized by us.
If the operator encounters any situation not mentioned in this manual, please contact
So-Low Environmental or an agent authorized by us for the correct handling method.

If the equipment is not used according to the method specified in the specification, it
may be damaged.
Try to use the accessories provided by us. If users would
like to use other accessories, we will not be responsible for the adverse
consequences caused therefrom.

Equipment must be inspected and maintained regularly to ensure good operation of the
equipment.
Tips
Properly use protective equipment (including protective clothing, protective gloves,
goggles, etc.)
Keep good hygiene habits

Please pay attention to safety when using this product

Keep clear of obstruction all ventilation openings in the appliance enclosure or in the
structure for building-in.
Do not use mechanical devices or other means to accelerate the defrosting process, other
than those recommended by the manufacturer.
Do not damage the refrigerating circuit.

Do not use electrical appliances inside the food/ice storage compartments unless they are of
the type recommended by the manufacturer.
1

2.Safety Instructions
When using this product for the first time, please pay attention to the meaning of the following warning signs
and carefully read the safety precautions, so that you can use this equipment safely and correctly.
Warning! Failure to observe the
Attention! Failure to observe the precautions
precautions may result in serious personal
may result in personal injury or equipment
injury or death.
failure and related property losses.
Protective conductor terminal
Risk of Exploration This sign indicates the
risk of explosion when using volatile and
explosive chemicals.
Do not place it obliquely
Avoid direct sunlight
Beware of electric shock.
Beware of fire
This equipment is a precision instrument
Warning: Failure to observe the precautions may result in serious personal injury or
death.
Do not touch the equipment with wet hands to avoid electric shock; Equipment shall not be grounded through
gas pipeline, water supply pipeline, telephone line or lightning rod, which may easily cause electric shock.
This equipment can only be installed by professional technicians or after-sales maintenance personnel, it
may cause electric shock or fire.
Please handle the power cord carefully to avoid short circuits or open circuits. Please turn off the power
before pulling out the power plug. Don't bundle the power cord, don't press it under furniture or heavy
objects.
After installation, the power plug must be within reach, so that the power plug can be unplugged in time in
case of emergency.
Be sure to install the equipment on solid and flat ground and take due care to prevent tipping over. If the
ground is not solid enough or the installation location is not appropriate, it may cause the equipment to
fall over and cause equipment damage or personal injury.
Do not lengthen the power cord without authorization to avoid heating or fire.
Do not use the power supply that is not specified in the equipment design, to avoid overheating, short
circuit, and other faults.
This equipment adopts a 110V/60HZ AC power supply. If the operating voltage is too low or too high, a
suitable automatic voltage stabilizer must be installed for cooperative use.
Please place the equipment stably and avoid shaking.
Do not place the equipment in a dangerous area, and do not operate the equipment near flammable items
to prevent explosion or fire accidents.
2

Do not place the equipment in areas exposed to the sun or rain, to prevent danger such as short circuit or
overheating.
Do not tilt or lay the equipment sideways, and do not impact the equipment body; Refrigeration systems are
installed in the equipment, which is easy to be damaged by tilt or impact.
Please place the equipment in a dry and dust-free environment to avoid risks such as overheating, and short circuit.
In case of unexpected sound, smell, smoke, etc. when the power is turned on, please unplug the power in
time and contact the manufacturer or supplier.
Please place the equipment in a dry and ventilated environment and ensure that the equipment vents and
instrument surfaces are not blocked or shielded by walls or other objects; Do not use it in a poorly ventilated
environment to prevent damage caused by heat released by equipment.
It is forbidden to disassemble and modify this equipment without authorization, to avoid potential safety
hazards. In this case, So-Low will not bear any responsibility for quality accidents.
It is forbidden to put flammable and explosive dangerous goods, strong corrosive acids, alkalis and other
items unsuitable for the equipment in the equipment.
When storing toxic, harmful, or radioactive materials, please use the equipment in safe areas. Improper use
may cause harm to human health or the environment.
Metal objects such as nails or iron wires shall not be inserted into any aperture and gap or any outlet of the
equipment, otherwise electric shock or injury may be caused due to accidental contact between the above
objects and moving parts.
To ensure the normal operation and ventilation and heat dissipation of the equipment, the back, left and right
sides of the cabinet shall be at least 1-2 inches away from the wall, and the air inlet and air outlet must not
be blocked by obstacles!
This equipment must be connected to a ground wire.
Note: Failure to observe the precautions may result in personal injury or equipment failure and
related property losses.
It is forbidden to store living animals, flowers, or other items with strict temperature requirements in
the equipment.
When the equipment is running, do not touch the inner surface of the cabinet without wearing protective gear.
Hold the handle and close the door to avoid pinching your fingers; When the equipment is not used for a long
time, please unplug it and pack it for storage.
When restarting the equipment after power failure or power off, please check the equipment settings first,
otherwise the stored items may be damaged due to the change of settings.
The equipment can be used for item preservation, not as production equipment!
Keep the keys in a safe location.
When handling the equipment, please be careful not to tip over the equipment, to prevent equipment
damage or personal injury.
When handling, it shall be lifted from the bottom, with the inclined plane is not greater than 45°, and it shall
be handled with care. Please use the equipment in safe areas. Improper use may cause harm to human
health or the environment.
3

3. Precautions in Use
Before putting the items into the equipment, please confirm that the temperature in the freezer storage chamber has
reached the set value first, and then put the articles in batches. Every time you put in items; they shall not exceed 1/3 of
the inner volume of the freezer storage chamber to prevent excessive temperature rise.

The equipment temperature display value is the temperature at the temperaturesensor in the freezer storage chamber.
There is a certain gap between the displayed temperature and the actual temperature at the center of the equipment when
the equipment just starts running, but as the equipment enters a stable state, the displayed temperature will gradually
approach the actual temperature.

Please use a diluted neutral cleaner to clean the equipment, and do not use brushes, acid, gasoline, soap powder,
polishing agent, or hot water to clean the equipment, otherwise the painted surface and plastic rubber parts may be
damaged. Be careful not to wipe plastic rubber parts with volatile solvents such as gasoline.

When the equipment is not used for a long time, the power supply shall be cut off.
4.Product Installation
4.1 Installation Environment
Ambient temperature: 16℃~ 32℃, the most ideal temperature is 18℃~ 25℃, and the air conditioning system
shall be used when necessary.

Relative humidity: ≤80%RH.

There is no strong vibration and corrosive gas around.

Avoid the existence of a large amount of dust.

Avoid rocking or shaking the equipment.

Elevation of the working position of the equipment: less than 2000m.

Indoor use, pollution degree 2, and overvoltage category II.

Input voltage AC single-phase 110V.

There is no direct sunlight, other cold and heat sources, and strong electromagnetic interference, which
will affect the normal operation of the control system and directly damage the system in severe cases.
4.2 Installation Site
To operate the equipment normally and obtain the best performance level, the installation site
of the equipment shall meet the following requirements:
It cannot be installed in a narrow and closed space, and the door of the room shall not be
smaller or lower than this equipment, which shall at least ensure the normal access of the
equipment, to avoid the maintenance difficulties in case of equipment failure, which may
result in damage to stored items due to the failure to repair the equipment in time.

The installation floor must be solid, flat, non-combustible, and able to bear the weight of
the equipment during operation.

It shall be with good ventilation, and direct sunlight shall be avoided.

Each piece of equipment needs to use a power outlet independently.
Please ensure that the current by the power outlet shall be ≥10A, and the plug and outlet are firmly connected.
Check the working voltage before use. In areas with unstable voltage, consider using a
voltage stabilizer suitable for equipment load. The power of the voltage stabilizer is greater than
4KW to ensure that the input voltage requirements in the installation environment are met.
Equipment shall be reliably grounded. If the power cord outlet is equipped with grounding
wire, check whether the grounding is good before use. If the outlet is not equipped with
grounding wire, it must be installed by professional engineers and technicians.
Attention: Since the ambient temperature has great influence on the equipment, if the above
environmental requirements cannot be met, the equipment may not run normally. Please
improve the environment before using the equipment; The equipment is operated intermittently.
4

4.3 Preparation before use
1. Remove the outer packaging of all products (including the protective foam in the packaging box)
Warning: Don't put the plastic bags within the reach of children, to prevent suffocation accidents.
2. Inventory of accessories: Please check the accessories and materials according to the packing list.
3. Cleaning: Clean the product once before use.
4. Before use, remove the small wire shelf and put it at the bottom of the cabinet (applicable to
MV4-2UCRGDDA and MV4-2UCRDA).
5. Installation of door handles (DHK4-23GD，DHK4-49GD). To install handles, the handles shall be
placed together with accessories.
Handle installation method:
Firstly, open the door handle as shown in the following figure.
Then, remove the screw for installing the door handle on the cabinet, and install the handle seat with
this screw; Finally, install the handle cover, insert both ends of the handle cover into the corresponding
grooves of the handle seat, and then press it to close it.
Door handle
Screw
Mounting hole
4.4 First Power-on
When using the equipment for the first time, please follow these steps:
1.After the equipment is placed, leveled, and cleaned, it shall stand for more than 24 hours, and then power it on to
ensure the normal operation of the equipment.
2.Under no-load condition, connect the power cord to a dedicated outlet with appropriate specifications.
3.After powering on, turn on the power switch of the equipment.
4.Check whether the operating temperature of the equipment reaches the required value, observe the normal start
and stop of the equipment for more than 24 hours, and put a small number of items in the Refrigerator after
confirming the normal performance.
5.Please store items in batches, with the items not exceeding 1/3 of the cabinet volume each time. Ensure that the
equipment is running properly after shutdown for more than 12 hours before putting in the next batch of items).
6. Try not to open the door during cooling, otherwise the temperature will rise.
5

4.5 Operation after Power Failure
1. The equipment has a memory function for the set value. When the power is restored after a power failure, the
equipment will continue to operate before power failure.
2. Once the equipment is powered off, it requires 5 minutes before it can be switched on again, to avoid damaging the
compressor.
3. We guarantee the normal operation of this equipment under certain conditions, but we are not responsible for any
loss or damage of stored items after a power failure.
Notes:
The transportation and movement of equipment is realized by casters.
A special person shall be responsible for checking and recording the running status of the equipment every
day (record and check once every 2-4 hours). In case of failure or shutdown, the temperature in the
Refrigerator will rise. If it cannot be repaired in a short time, please take out the stored items and transfer
them to a place that meets the temperature requirements for storage to avoid damage to the items.

Before putting items into the equipment, it shall be confirmed in advance whether the temperature range of
the equipment meets the temperature requirement of the items, to avoid damage to stored items due to the
difference between the settable temperature of the equipment and the required temperature of the items.
Please pay attention not to block the air outlet and air inlet when putting items into the equipment.

Due to the refrigeration inertia, there is a certain difference between the actual display temperature and
the set temperature of the equipment, which is a normal phenomenon.

The equipment is an item storage equipment, which cannot be used for routine production operations. It
is strictly forbidden to put too many items which are relatively hot into the equipment at one time,
otherwise the compressor will run for a long time, and be burned due to high temperature. Items must
be put in batches, to ensure that the Refrigerator is cooled step by step until the temperature required
for storing items is reached.

Electrical appliances without production license shall not be used inside the equipment.
Do not change the set temperature frequently in a short time, otherwise the expected setting effect may
not be achieved due to the large temperature inertia; Ensure that there is a certain air circulation space
around the cabinet when putting in items, especially do not block the temperature sensor in the cabinet
(for collecting the temperature of the cabinet), otherwise it will affect the stability and accurate control of
the temperature in the cabinet!

Items shall not be placed directly at the bottom of the Refrigerator, but on the bottom shelf, otherwise
the refrigeration effect of the equipment will be affected.

When putting in items, if the moisture content of the items is too much or too little, it will affect the humidity
change in the cabinet, so it is best to keep the items sealed.

The humidity of the working environment will affect the change of humidity in the cabinet, especially if
the door is opened too frequently and the door is not closed properly.
Warning:
Children are not allowed to play with this equipment as a game prop, otherwise the injury or loss
caused therefrom will be at their own risk.

To avoid the risk of electric shock, this equipment must be grounded properly.

No modification of this equipment is allowed.
Do not modify this equipment without authorization of the manufacturer.
Protection impairment if used in a manner not specified by the manufacturer.
The instructions concerning persons (including children) with reduced physical, sensory, or mental
capabilities, or lack of experience and knowledge and children playing with the appliance are not required.
Keep all ventilation openings in the enclosure or, in the structure for building in, clear of obstruction.
Do not use mechanical devices or other means to accelerate the defrosting process, other than
those recommended by the manufacturer.

Do not damage the refrigerant circuit.
6

5. Product composition and overview
Remote alarm
interface
Rs485 interface
USB interface
Power switch
MV4-2UCRGDDA (It can be used as reference for MV4-2UCRDA)
Display panel
USB interface
Door lock
Test hole
Door handle
Door body
Cabinet
Adjust feet
Caster
Figure II MV4-6UCRGDDA
(It can be used as reference for MV4-6UCRDA)
Caster
Adjust feet
Figure III DHK4-10GD
(It can be used as reference for DHK4-14SD)
7

Chart recorder(optional)
Door lock
Test hole
Door handle
Door body
Steel wire shelf
Cabinet
Caster
Figure IV DHK4-23GD
Display panel
(power switch
on the back)
USB interface
8

Test hole
Steel wire shelf
Cabinet
Caster
Display panel
Chart recorder(optional) (power switch
on the back)
USB interface
Door lock
Door handle
Door body
Figure VI DHK4-49GD
* Due to the improvement of products and model differences, the actual products may be different from the
diagram. Please refer to the actual products! The diagram is only used for functional parts description.
*Structure and composition: The product consist of cabinet, door (glass door structure or foam door
structure), refrigeration system and control system.
*Scope of application: It is suitable for storing items in hospitals, pharmacies, epidemic prevention stations,
research institutions, biopharmaceuticals, and other units.
9

6. Operating Instructions
6.1 Function Introduction
This series of products includes two control systems, based on which different adjustment methods apply. Please
select the proper adjustment method according to the type of control system with the storage box you purchased.
Printer (optional)
Type A control panel
1. Function description of Type A control panel (Applicable to MV4-2UCRGDDA, MV4-2UCRDA, DHK4-10GD, DHK4-
14SD, DHK4-23GD,DHK4-49GD)
Door
WIFI
Defrosting
Key lock
1) Description of display icon indicator
switch
Power
Door
(As shown in the right diagram)
Print
Refrigeration
failure
heating
Mute
Electric
Serial
Fan
quantity
port
a. Door switch indicator
When the door is opened, the door switch indicator is on; When the door is closed, the door switch indicator is
off. b. Defrosting indicator
When the refrigerator enters the defrosting state, the defrosting indicator is always on; When the refrigerator exits
the defrosting state, the defrosting indicator is always off.
c. Key lock indicator
When the keys are in lock state, none of the keys respond, and the key lock lights up. In this case, after pressing
the up key + down key for 3s, you will be prompted to enter the password, which is defaulted as "005." After
entering it correctly, press the Set/Mute Multiplex key, and the key lock will be released. At this time, the key lock
indicator will be off. In the unlock state, if no key is pressed for 60s, the key lock is started, and the key lock
indicator is on. Long press the up key + down key for 3s, and the keys are locked.
d. Power-off indicator
The refrigerator is normally powered by 110V. When the input power is turned off, the buzzer will be triggered, the
digital tube flashes the power-off code "PF" alternately at 3s intervals, and the power-off indicator is on. When the
input power is turned on, it returns to normal, and the power-off indicator is off.
e. Print indicator
When the printer is not working, the indicator is off; When the printer is working, the indicator is
on. f. Door heating indicator
When the door heating is turned off, the door heating indicator is off; When the door heating is turned on, the
door heating indicator is on.
g. Refrigeration indicator
If the compressor is in working condition, the refrigeration indicator is on; If the compressor is in a shutdown
state, the cooling indicator is off.
h. Mute indicator
When the alarm tone key is muted, the indicator is on; When the alarm mute function is canceled, the indicator is
off. i. Low battery level indicator
When the battery voltage is less than 8V, the buzzer will be triggered, the low battery indicator will be on, and the
digital tube will flash the low battery code "BL" alternately at intervals of 3s; When the battery voltage is greater than
12V, the buzzer will be turned off, the low battery indicator will be off, and the digital tube will resume normal
display. j. Serial port indicator
When the reserved RS-485 serial port is not connected to the equipment, the serial port indicator will be off; When the
equipment is successfully connected to the reserved RS-485 serial port, the serial port indicator will be on.
k. Fan indicator
When the evaporator fan is turned on, the fan indicator is on; when the evaporator fan is turned off, the fan
indicator is off.
10

2) temperature display window, which displays the average temperature inside the cabinet in °C under
normal operation.
View ambient temperature:
In the key lock state, press key, and digital tube displays the ambient temperature, and returns to normal
display after 5 s without key operation or pressing and . In the key unlock state, press key, and digital
tube displays ambient temperature and returns to normal display after 5s without key operation.
Humidity check: key unlocked state, long press and , digital tube display humidity, no press any Key
operation after 5 seconds or press and , return to normal display.
3)is the set/mute key; In case of no alarm state and key unlock state, press , and display the ambient
temperature for 5s and then return to normal display; In the unlock state, press for more than 3s, and enter the
user menu.
When buzzer is triggered (including cabinet high temperature alarm, door opening alarm, sensor failure alarm, etc.)
and in the key unlock state, press for the first time, and the buzzer stops ringing, and the ambient temperature
is displayed for 5s, after which the normal display is resumed (pressing the mute button is only to turn off the
buzzer for alarming this abnormal state, for example troubleshooting, and the buzzer will be triggered next time for
any abnormality). Then press again, trigger the buzzer, display the ambient temperature for 5s, and resume the
display of chamber temperature and alarm state. In the key unlock state , can be used as a setting key.
In unlock state and parameter setting mode, press this key to display parameter values and parameter names. If the
pressing time is longer than 3 seconds, save the settings and return to the normal interface.
4) is a up key; In parameter setting mode, move to the next parameter or increase the parameter value. For
example, when setting the set temperature, increase the set temperature value. When setting the parameter value,
long press the up button, and the parameter will increase rapidly. Under normal conditions, long press the up key
for 3 seconds to import the data of the USB flash drive in 12 months.
5) is a down key.
In parameter setting mode, move to the previous parameter or decrease the parameter value.
For example, when setting the set temperature, reduce the set temperature.
When setting the parameter value, long press the down button, and the parameter will decrease rapidly.
6) is a print key.
The system can keep 7 days of data for printing and press the print key to print the temperature within the set time
period.
7) is a light switch key.
When the equipment is powered on, the lights are turned off by default. Press the light switch key to turn the lights
on and off. When the light is off, it can be turned on when the door is opened and turned off when the door is
closed; When the light is off, it does not change when the door is opened or closed. This equipment has two
functions: automatic lighting and manual lighting. In the automatic lighting state, the lighting lamp will be on
immediately when the door is opened, and the lighting lamp will be off after a 5 second delay; The user can also
turn on the lighting lamp manually. In this case, the lighting lamp is always on (the indicator light above the key is
on) without being controlled by the door opening and closing. Only when the manual lighting is turned off by
pressing the light switch key again can the lighting lamp be automatically on (the indicator light above the key is off).
8)USB data export.
Automatic export: When the USB interface is connected to the USB flash drive, the buzzer of the recorder beeps
once, displaying "on," and PDF files of the data of the current month and the previous month are generated in the
USB flash drive. After the data transmission is completed, the buzzer beeps once, displaying "End," and the
normal display resumes after 6s.
Note: When there is less data, the digital tube will not display "on" and "End."
Manual export: In the key unlock state, and when the USB flash drive is connected and the file is not being
generated, press the key up for 3 seconds, and the digital tube will display "d01." Press the up key or down key to
adjust "d00~d12," and press key to obtain the file generation (d00) or generate the PDF file of the record data
of the previous months (1-12).
11

12

Quick setting of time after power on
After the power-on self-test on the display board is completed, the quick setting menu is displayed.
Menu item
Menu
Menu description
Set range
Default
Unit
n
Set logger module time - year
10~50
/
y
Set logger module time - month
1~12
--
/
r
Set logger module time - day
01~31
--
/
Quick
S
Set logger module time - hour
00~23
--
/
Settings
F
Set logger module time - minute
00~59
--
/
menu
Pt
Print interval
0~240
20
min
0~240
SCY
Temperature data recording period
0: shielded
10
min
recorder
If there is no operation for 60 seconds under the quick setting menu, it will automatically exit the quick setting menu and return to normal display.
Alarm Code
Error Description
H1
High temperature alarm
L1
Low temperature alarm
H2
Alarm for high ambient temperature
H3
Condenser overheat alarm
do
Door opening alarm
PF
Power failure alarm
bL
Battery low alarm
Er
The recorder is not connected
LoF
Recorder did not start
EE
Communication failure
13

abc
i(optional) hgfe(optional) d
Type B control panel
1. Function description of Type B control panel (Applicable to MV4-6UCRGDDA, MV4-6UCRDA)
a. It is temperature display window, which displays the average temperature inside the cabinet in °C under
normal operation: Different prompt characters can be displayed in the setting state (see below for details);
b.Door opening indicator: When the refrigerator door is opened, the indicator lights up. After more than 1 minute,
the door opening alarm indicator will be on and the buzzer triggered, displaying "do".
c.Fault indicator: When the product runs normally, the indicator is off; The indicator is on for operation abnormality.
d. LIGHT: After the machine is powered on, the light is off by default, and the on-off of the light can be adjusted by
the on-off key. When the light is off, it can be turned on when the door is opened and turned off when the door is
closed; When the light is off, it does not change when the door is opened or closed. This equipment has two
functions: automatic lighting and manual lighting. In the automatic lighting state, the lighting lamp will be on
immediately when the door is opened, and the lighting lamp will be off after a 5 second delay; The user can also
turn on the lighting lamp manually. In this case, the lighting lamp is always on (the indicator light above the key is
on) without being controlled by the door opening and closing. Only when the manual lighting is turned off by
pressing the light switch key again can the lighting lamp be automatically on (the indicator light above the key is off). e.
“PRINT “(optional): The system can keep 7 days of data for printing. Press the print key to print the temperature
within the set time period.
f.: In parameter setting mode, reduce the parameter value. For example, when setting the set temperature,
reduce the set temperature. When setting the parameter value, long press the down button, and the parameter will
decrease rapidly.
g. : In parameter setting mode, increase the parameter value. For example, when setting the set temperature,
increase the set temperature value. When setting the parameter value, long press the up button, and the parameter
will increase rapidly. Under normal conditions, long press the up key for 3 seconds to import the data of the USB
flash drive in 12 months.
h. is the set/mute key; In case of no alarm state and key unlock state, press , and display the ambient
temperature for 5s and then return to normal display; In the unlock state, press for more than 3s, and enter the
user menu.
When buzzer is triggered (including cabinet high alarm, door opening alarm, sensor failure alarm, etc.) and in the
button unlock state, press for the first time, and the buzzer stops ringing, and the ambient temperature is
displayed for 5s, after which the normal display is resumed (pressing the mute button is only to turn off the buzzer
for alarming this abnormal state, for example trouble removal, and the buzzer will be triggered next time for any
abnormality). Then press again, trigger the buzzer, display the ambient temperature for 5s, and then resume
the display of cabinet temperature and alarm state. In the key unlock state, can be used as a setting key.
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USB data ；
Automatic export: when the U disk is connected to the USB interface, the recorder buzzer will
chirp once and display "on". PDF files of data that not currently exported will be generated in
the U disk.
After data transmission, the buzzer will chirp once again and display "End".After 6s, it will
return to normal display.
Note: when the data is very little, the digital tube will not display "on" and "End".
Manually export: If the button is under locked state, after connecting U disk well and buzzer
alarm for one time, press upper button for 3 seconds, digital tube display “d01”, Press the
up button or down button to adjust “d00~d12”, press , The U disk internally generates a
PDF file that generates this file (d00) or generates the data recorded in the previous month
(1-12).
2.Function settings
a.Power on, open the power switch on the back of the cabient, the machine can
enter the working state;
b.User parameter settings:
Unlock: In the normal running state, press the key and for 3 seconds at the same
time, the digital tube will display the parameter code "0000", and input the password
"0005" (enter the user menu password, enter "0099" to restore the key lock password
to the
default "0005"), Unlock at this time. Press the key for 3 seconds after unlocking, the
digital tube displays the parameter code
"PS1" and enters the setting adjustment.
c.Use the up or down key to scroll through the parameters.
The display order is b1-b2-Set-H-L-n-y-r-S-F-Pt-tH1-P1-PS1.
Press the key to confirm the category. The first parameter name of this type of
parameter will be displayed.
Press or to scroll through the values
®Press the to display the corresponding value
®Press or to increase or decrease the value
®Press the to temporarily store the modified value of the lock and return to the
display parameter.
5. If you need to modify other parameters, repeat steps 1-4.
6. Press the for more than 3 seconds to store the modified parameter and return to
the display parameter category.
d. Press the for more than 3 seconds, or if there is no button within 60 seconds, exit the
parameter setting program.
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16

Quick setting of time after power on
After the power-on self-test on the display board is completed, the quick setting menu is displayed.
Menu item
Menu
Menu description
Set range
Default
Unit
n
Set logger module time - year
10~50
/
y
Set logger module time - month
1~12
--
/
r
Set logger module time - day
01~31
--
/
Quick
S
Set logger module time - hour
00~23
--
/
Settings
F
Set logger module time - minute
00~59
--
/
menu
Pt
Print interval
0~240
20
min
0~240
SCY
Temperature data recording period
0: shielded
10
min
recorder
If there is no operation for 60 seconds under the quick setting menu, it will automatically exit the quick setting menu and return to normal display.
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6.2 Optional function
1. Remote alarm terminal and RS485 interface
The remote alarm terminal is installed on the back of the cabinet, and the alarm signal is output by the terminal. The load-bearing capacity of the terminal is
30V 2A (Safety extra-low voltage or limited power energy circuit). Users can choose normally open, normally closed and common terminals according to their own
needs.
Normally open, Common, Normally closed
RS-485
Remote alarm terminal
Overload Protector
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