Vacc-Safe VS-40W301 User manual

Biomedical freezer
VS-40W301

1
Contents
1. DECLARATION AND SAFETY TIPS.............................................................................................................2
2. PRODUCT FEATURES, STRUCTURE AND SCOPE OF APPLICATION .............................................3
3. PRODUCT INSTALLATION AND PRECAUTIONS..................................................................................4
4. START TEST MACHINE..................................................................................................................................6
5. CONTROLLER FUNCTION AND BASIC OPERATION ..........................................................................7
6. STORAGE NOTES............................................................................................................................................8
7. MAINTENANCE ...............................................................................................................................................9
8. NON-FAULT SIGNS........................................................................................................................................9
9. TROUBLE SHOOTING AND MAINTENANCE SERVICE ....................................................................10
10. MODEL NUMBER AND MAIN TECHNICAL PARAMETERS .......................................................... 11
11. PACKING LIST AND ELECTRICAL SCHEMATIC DIAGRAM........................................................... 11

2
1. DECLARATION AND SAFETY TIPS
Declaration
Thank you for choosing and using this series of products. For your safe and convenient use
and reasonable maintenance of this product, please read the instruction manual carefully
before use and keep it in a safe place for reference.
The Company shall have no obligation or responsibility for any damage to any item caused
by the user's failure to follow the "instructions for use" stated in this manual, or for any injury
caused by a person's failure to follow the "safety tips".
Users must do the following three things in use:
1. Always use protective equipment correctly (including clothing, gloves, etc.);
2. Always adopt good hygiene practices and strictly follow product instructions;
3. Everyone has an obligation to take responsibility for their own safety.
Due to the continuous improvement or update of the product, the product you get may not
be exactly the same as the illustration in this manual, please refer to the physical appearance
of the product.
•If there are other requirements for use, please contact us for customization.
•The contents of this manual may not be reproduced or used in any form without the written
permission of the Company. Copyright is reserved.
•The contents of this manual are subject to change without notice.
Safety tips
Please read this manual carefully when using this product for the
first time!
The maintenance of the equipment can only be done by the Company or our authorized
agents. If the operator encounters a situation not mentioned in this manual, please contact
the Company or an authorized agent of our products and ask for the correct handling method.
Try to use the parts provided by the Company, if the user wants to use other parts, the
Company will not be responsible for the adverse consequences. However, the user can apply
to the Company to verify whether the parts meet our requirements.
The freezer must be inspected and maintained at the specified intervals. This series of
products is strictly prohibited to store live animals or other items that do not match the
storage temperature of this series of products.
To ensure the normal operation of the product and ventilation and heat dissipation, the back
and left and right sides of the Low Temperature freezer are at least 30 centimeters away from

3
the wall, and the air inlet and outlet must not be blocked by obstacles.
Once the power is interrupted during use, wait 5 minutes before reconnecting to avoid
damaging the compressor.
If you encounter machine failure or power failure, the temperature inside the freezer of this
series of products will rise. If it cannot be repaired within a short time, please take out the
stored items Page 3 / 15 and transfer them to other places that meet the temperature
requirements of stored items to avoid damaging them.
For your personal safety, please wear safety gloves when accessing items with this series of
products.
2. PRODUCT FEATURES, STRUCTURE AND
SCOPE OF APPLICATION
Product Features
Adopt foam insulation door which is easy to use, reduce cold loss and save energy
consumption.
Adopt advanced optimized refrigeration system, with good heat dissipation and fast cooling
speed.
Adopt extra-thick insulation layer which can effectively reduce cold loss, save electricity and
prolong service life.
Adopt stainless steel liner and PS blister liner and wire on tube evaporator, with good
refrigeration effect and easy to clean.
The freezer is designed with shelf type, so it's easy to access items at a glance.
Adopt temperature controller with micro-computer with precise temperature control to
ensure more accurate and safe operation. The temperature inside the freezer is displayed in
digital form which is beautiful and easy to use. So that the temperature inside the box and
the working state can be viewed and adjusted without opening the door.
Adopt new type of environment-friendly low-temperature refrigerant, and the refrigeration
system adopts imported parts to ensure good reliability and long service life.
Product Structure

4
Note: The above structure diagram is just for an explanation, the actual product shall
prevail
Product Scope of Application
These products can be used for scientific research, low-temperature preservation of special
ice cream and tuna and other products, as well as low-temperature experiments on special
materials, etc. (It is widely used for food freezing), scientific research institutes, industrial and
mining enterprises, biological engineering research, electronic chemicals, ocean-going
fisheries and other industries.
3. PRODUCT INSTALLATION AND
PRECAUTIONS
Product installation
The product is used with the casters adjusted in place and placed on a level ground.
Handling: It shall be done from the bottom when lifting, the angle of the inclined surface shall
not be larger than 45 degrees, lightly moving and gently placing.
Do not grasp the door body, door lock or handle as a force-bearing part.
Remove all packaging components (including the protective foam inside the freezer).
Inventory random accessories and information according to the packing list.
The product shall be cleaned once before use.
On a flat surface, this series can be moved by pushing directly.
Environment requirements for using products:
a) Indoor use with good ventilation;
b) The surface on which the freezer is installed must be fixed, horizontal, non-combustible

5
and able to withstand the weight of this series of products in operation.
c) Placed in a place not exposed to direct sunlight and away from heat sources, at an ambient
temperature of not more than 32°C.
d) Require this series of products to be surrounded by a space of more than 30 cm to facilitate
ventilation and heat dissipation.
e) Must not be placed in an environment that is too cold to freeze;
f) Must not be placed in humid or splash-prone areas;
g) No electromagnetic interference in the surrounding area, which will affect the normal
operation of the control system and will directly damage the system in serious cases; Normal
operating conditions for this series of products:
a) Ambient temperature: 16℃～32℃;
b) Voltage range: 198V-264V;
c) Relative humidity: ≤ 80% RH;
d) No strong vibration and corrosive gases in the surrounding area;
e) Free from direct sunlight and other sources of heat and cold;
f) Altitudes below 2000 meters;
g) Overvoltage category II;
h) Pollution level (2)
The working system of this series of products: continuous working
WARNING: The packaging base at the bottom of this series of products must be
removed before use.
WARNING: When moving this series of products, take care that the bottom foot does
not touch the power cord.
WARNING: The bottom front wheel brake of this series of products need to be locked
after moving to the designated position.
WARNING: This series of products need to be left to stand for 12 hours before initial
power up.
WARNING: When this series of products are just connected to the power supply, do not
immediately put the items in to it. After running for a period of time, when the
temperature inside the freezer drops to the set temperature, then put the items in
batches.
Note: A single batch of items put into the freezer can not exceed 1/4 of the volume.
WARNING: Keep all ventilation openings in the enclosure or, in the structure for
building-in, clear of obstruction.
WARNING: Do not use mechanical devices or other means to accelerate the defrosting
process, other than those recommended by the manufacturer.
WARNING: Do not damage the refrigerant circuit.
For equipment that use flammable insulation blowing gases, the instructions shall
include information regarding disposal of the equipment.
Refrigerant and cyclopentane foaming material used for the appliance are flammable.
Therefore, when the appliance is scrapped, it shall be kept away from any fire source
and be recovered by a special recovering company with corresponding a qualification
other than being disposed of by combustion, so as to prevent damage to the

6
environment or any other harm.
The product with the symbol reads "warning terms";
The product with this symbol reads “prevent fire, stay away from fire sources".
The product with this symbol reads "cyclopentane blowing"
Safety precautions:
Power supply voltage: This series of products use 220V-240V/50Hz AC power supply, if the
use of voltage lower than 198V or higher than 264V, need to add a suitable automatic voltage
regulator with the use.
Use of this series of products requires a low-voltage air circuit breaker and earth leakage
protection device for the power supply.
A special power socket must be used and reliable grounding must be carried out, and the
length of the power line must not be arbitrarily extended. If extensions are required, copper-
core conductors with a cross-sectional area of 2.5mm2 or more must be used, and copper-
core conductors in the wall connected to the power socket must also have a cross-sectional
area of 4mm2 or more.
This series of products are strictly prohibited to put into flammable, explosive dangerous
goods and strong corrosive acid, alkali and other items;
The keys of this series of products need to be properly stored to avoid accidents when
children get them and open the door to play;
Do not connect the zero wire (N terminal) and the ground wire (E terminal) of the power
socket together, otherwise it can cause the shell of this series of products to be charged and
an electric shock accident can occur; The power cord cannot be bundled and used, cannot
be pressed under heavy objects, and cannot be close to heat sources such as compressors.
4. START TEST MACHINE
Plug the power plug into the power socket, and the power indicator lights up. In order to
ensure the normal operation of the low-temperature freezer, please use a 10A 3-hole socket
and above.
After the power on for 3 minutes, the system will automatically start the compressor and enter
the refrigeration cycle mode.
After being electrified for a period of time, the temperature in the freezer drops obviously,
indicating that the refrigeration system works normally.

7
5. CONTROLLER FUNCTION AND BASIC
OPERATION
Temperature Setting
The temperature range is -10~ -40℃
Press ‘SET’ for more than 1 second, the screen will show the last set
temperature
Adjust or to set the temperature as needed
Press ‘SET’ for over 3 second to save the set and exit the temperature setting
Remark: the default temperature is -25℃
High /Low Temperature Alarm
Alarming methods (sound buzzing alarming, light flashing alarming)
The High temperature alarm will be triggered once the inner temperature is over -5℃
The Low temperature alarm will be triggered once the inner temperature is lower-
30℃
Press any key the alarm will stop
If you have special requirement on the High/ Low Temperature Alarm, please contact the after-
service.
Sensor Failure alarm
Alarming methods (sound buzzing alarming, light flashing alarming)
Press any key the alarm will stop
Power Failure alarm
Alarming methods (sound buzzing alarming)
When the mains power off, power failure will be triggered
Controller Discharge
The controller is equipped with battery , it will keep display the inner temperature for
48 hours when there is power off
Press ‘Fn’ for 5 seconds , the controller will be discharged
Temperature Export
Insert USB disk to the USB port, the screen show ‘UP’ and automatically start upload the
history temperature recorder into USB, when the screen show ‘ED’, it finish upload.
Remark: the USB should be FAT32 type, otherwise temperature export will be impacted.
Recording interval：
1~200minutes can be set (default 6 minutes)
Date saving path :\USB_DATA\YEAR\*.csv ( “*” mean month)；

8
DATA FORM：
Date
Time
Temp
20150202
15:16
20.3
Set the storage module time
Press button and for 3 seconds at the same time, can view and set the storage
module time.
During normal operation, press button and for 3 seconds at the same time, the
display will show "t0" (year), then can view and set the storage module time.
Press button or to rollover the time code, will see t0(year)，t1(month)，t2(day)，
t3(hour)，t4(minute)
After choose time code, press button , digital tube displays the current system time.
Press button or to adjust the time.
press , return to time code display, time saved automatically.
If need to adjust other time, repeat step 2 to 5.
After modification, press button for 3 seconds, exit the setting mode.
Attn: If no button is pressed within 10 seconds, will exit the setting mode automatically. And
time modification will be invalid if the key is not pressed.
6. STORAGE NOTES
Start the freezer with nothing in it before storing items. After entering a stable operation state
(Best to run empty freezer for more than 4 hours), refrigerated items shall be put into the
freezer after the freezer is fully cooled.
The items or other products put in the freezer at one time shall not be overcrowded.
Appropriate gaps shall be ensured to facilitate the circulation of cool air in it.
The low-temperature freezer refrigeration system is used to maintain a low temperature
rather than a quick-freezing device. If a large capacity (high water content substance) is to be
stored, it shall be stored after pre-cooling in other quick-freezing devices, so as to avoid the
long-term operation of refrigeration system without stopping.
When the initial storage capacity is large, the temperature shall be gradually reduced.
Reduce the temperature by 10℃ in each step, and keep that temperature for 1-2 hours until
it reaches the stored temperature Keep away from the metal edge when storing plastic bag
products, so as not to scratch the plastic bag.

9
7. MAINTENANCE
Maintenance frequency: To maintain the product, the power supply shall be cut off first.
In order to keep the product in the best working condition, it is recommended to carry out a
maintenance process every 6 months.
Freezer cleaning: Use non-corrosive neutral cleaner shall be used to clean the inner and outer
surfaces of the low-temperature freezer. After cleaning, dry it with a dry cloth.
Attention: Do not use water to wash the inner and outer surfaces to avoid affecting the
electrical insulating performance. Do not use boiled water, cleanser, acid, alkali, gasoline,
alcohol, benzene, caustic cleaners and bristle brush to clean freezer.
Use a soft brush or vacuum cleaner to remove dust from the condenser frequently to maintain
good condensation effect.
Rub a little talcum powder on the door seal often can prolong the service life of the sealing
strip.
When the low-temperature freezer runs for a long time, it is easy to accumulate frost at the
door seal, cabinet mouth and inner side wall of the freezer. Excessive frost layer will affect the
sealing performance and refrigeration performance. Please defrost regularly with a defroster
and wipe it clean with a dry cloth.
Use the non-corrosive neutral cleaner to clean the inner and outer surfaces of the low
temperature freezer. After cleaning, dry it with a dry cloth.
Machine shutdown: When the freezer is stopped, unplug the power plug and clean it
according to the above methods. After the natural drying process, cover it with plastic bags
and place it in a ventilated and clean place.
8. NON-FAULT SIGNS
The sound of flowing water: This is the sound of refrigerant flowing in the pipeline.
Compressor gets too hot: When the compressor works, its surface temperature can reach 70 ℃
~ 90 ℃.
When the low-temperature freezer works, both sides of the freezer (near the door) can be
slightly hot , which is due to the anti-exposure pipe.
Condensation on the door seal: In rainy and humid seasons or environments with high
humidity, condensation may appear on the outer surface of the freezer and the edge of the
door seal. Only need to dry it.
The temperature sometimes rises above the set value within the temperature control range:
This is because the system defrosts regularly and automatically recovers after defrosting.

10
9. TROUBLE SHOOTING AND
MAINTENANCE SERVICE
Alarm Code Display
Alarm Code
Error description
E0
Sensor failure
Lo
Chamber Low temperature
Hi
Chamber high temperature
Trouble shooting:
Some failures may also be caused by improper use. Before entrusting repair, please
check by yourself according to the following table:
Problem
Cause
The freezer does not work
Is the power plug charged? Is it plugged in
or loose? Is the supply voltage too low or
too high?
The compressor does not work
Is the temperature setting correctly?
The temperature continues to drop after
reaching the setting value
Is the temperature setting correctly?
The compressor does not work and
refrigerate
Is the compressor broken? Are the controller
and control circuits damaged?
The temperature does not reach the setting
value
Is the door not closed tightly or opened too
many times in a short time? Are there too
many items in at one time and are the items
too hot? Is the ambient temperature too
high?
Excessive noise
Does the freezer touch walls or other
obstacles?
If you can't judge the cause of the fault, or not able to solve it, please contact the after-sale
department of the Company according to the warranty certificate (attached) and tell us your
name, address, telephone number, model numbers of this series of products, purchasing date,
fault signs, etc. Our professional engineers will be at your service.
Declaration:
1. The after-sales service personnel of the Company will deal with the problem within 24
hours from the time when the user reports repair;
2. In the case of normal over-temperature alarm function of this series of products, the
Company will not compensate for the loss caused by the user's failure to transfer the stored
items in time;
3. The Company will compensate for the damage of the stored items in the freezer caused by
the abnormal over-temperature alarm function of this series of products, but the amount of

11
compensation will not exceed the price of the equipment when purchasing it.
10. MODEL NUMBER AND MAIN
TECHNICAL PARAMETERS
Technical parameter table of low-temperature freezer
Parameter
Model
number
Effectiv
e
volume
(L）
Storage
temper
a ture
(℃)
Rated
power
(~V/Hz)
Inpu
t
pow
er
(W)
Power
consumption
(kW·h/24h)
Electric
shockpr
oof
protecti
on
Alarm mode
Product
dimension
s W*D*H
Produc
t net
weight
(kg)
VS-25W198
198
-10 ～-
25
220-
240/50
250
1.5
I
Sound light
alarm
945*523*8
50
32
VS-25W288
288
-10 ～-
25
220-
240/50
250
1.5
I
Sound light
alarm
1115*670*
850
47
VS-25W368
368
-10 ～-
25
220-
240/50
350
1.8
I
Sound light
alarm
1255*745*
853
56
VS-25W568
568
-10 ～-
25
220-
240/50
400
2
I
Sound light
alarm
1870*745*
805
75
VS-40W301
301
-20 ～-
40
220-
240/50
450
2
I
Sound light
alarm
1285*696*
850
48
For models with USB data storage function, USB connection mode is USB2.0 and output
voltage is 5V. [Note: The technical parameters in this table are measured under the standard
state. If there is any change, please refer to the nameplate.]
11. PACKING LIST AND ELECTRICAL
SCHEMATIC DIAGRAM
Model
Instruction
Key
Defroster
VS-25W198
One
Two
One
VS-25W288
One
Two
One
VS-25W368
One
Two
One
VS-25W568
One
Two
One
VS-40W301
One
Two
One

12
Electrical schematic diagram: