IVYX Scientific DW-4525 Portable Ultra Low Temperature Freezer Instruction Manual

IVYX Scientific DW-4525 Portable Ultra Low Temperature Freezer

Product Information

This product is a freezer manufactured by IVYX Scientific. It is covered by a one-year warranty against defects in materials and workmanship. If any issues arise with the product, customers can contact IVYX Scientific at [email protected]. If the problem cannot be resolved, IVYX Scientific will provide a replacement unit free of charge or issue a full refund.
The freezer is equipped with a Free-piston Stirling engine, which reduces weight and increases efficiency. A Stirling engine operates by cyclic compression and expansion of a gas between different temperatures, converting heat energy into mechanical work.

Product Usage Instructions

1. Proper Connection:
   • Ensure that the AC adapter is properly connected by checking if the green light on the adapter is turned on.
   • For car DC outlet usage, the freezer can be powered by either 12V or 24V. Plug the cord firmly into the connection port of the freezer, turning it clockwise until a click is heard. Make sure the connection is tight and secure.
2. Freezer Operation:
   • The freezer will automatically turn on when connected to the power supply.
   • To power on the Stirling engine, press the Power button. The light will turn on with a beeping sound, indicating the engine has started. To power off the Stirling engine, press the Power button again. The light will turn off with a beeping sound, indicating the engine has stopped.
   • To change the temperature, press the appropriate button once the desired setpoint is achieved. The display will then show the current freezer temperature.
3. Turning Off the Freezer:
   • Press the Power button to turn off the freezer. The light will turn off.
   • Unplug the freezer after the power light has turned off.
4. Over-Temperature Alarm:
   • If an over-temperature alarm is triggered, check for the following possible causes:
   • The lid is ajar
   • The air vents are blocked
   • Power supply problems
   • Addition of a large relatively warm mass
   • Mechanical and/or electrical problems
   • To turn off the audible alarm, press the corresponding button. The alarm will be silenced for 1 hour.
   • Operating the Freezer in a Vehicle:

When switching between power supplies, make sure to turn off the freezer before doing so.

Troubleshooting:

If the freezer does not function properly, refer to the following troubleshooting steps:

assure that the
wall plug is firmly seated
The freezer does not receive power from the DC input| Power is not getting to the freezer from the DC input| Reseat the connections to the DC power cord and assure that the
DC input has live power
Inadequate air circulation| The air vents are blocked| Ensure that the air vents are clear of any obstructions
Inadequate power supply| Power supply problems| Check the power supply for any issues
The freezer does not function properly in an improper
environment| Improper environment| Ensure that the freezer is operated in a suitable
environment

QUALITY ASSURANCE

This product and all products sold by IVYX Scientific are covered by a one- year warranty against defects in materials and workmanship.
If you encounter issues with our product, please contact us at [email protected]. If we are unable to fix your problem, we will send you a replacement unit free of charge or a full refund.

TYPE : DW-4525
DW-6025
DW-8625
PORTABLE ULTRA LOW TEMPERATURE FREEZER OPERATING MANUAL
To prevent personal injury, injury to others, or damage to property read these safety precautions carefully before using.

SAFETY PRECAUTIONS

To prevent personal injury, injury to others, or damage to property, read these safety precautions carefully before use.

• Do not disassemble, modify or repair.
• There are no user serviceable parts inside the freezer unit.
• Do not immerse in water or pour water on the unit. Unauthorized modification to the cabinet, controls or free-piston Stirling engine is prohibited and will void all warranty provisions.
• Do not put ice or liquid water directly in the freezer box. always use suitable containers.
• Do not use glass containers when the contents might freeze and break.
• Do not store flammable items such as gasoline, thinner or solvents in the freezer.
• The freezer is NOT rated as an explosion-proof freezer.
• Do not use hard and/or sharp objects. such as knives or screwdrivers, to remove ice build up on the inside of the freezer. The inside panels are heat exchangers and can be damaged.
• Do not cut, change or modify the power cable.
• When removing the plug, hold onto the plug and not the cord.
• Do not block the air intake or air discharge vents.
• Do not drop, throw or abuse the freezer.
• Do not operate under extreme environmental conditions such as in a car trunk, in very high humidity environments, in rain or other severe weather.
• Do not use solvents to clean the control panel or the outside or inside of the freezer.

UNPACKING AND SET-UP

1. Remove the freezer and all accessories from the box. Carefully inspect the freezer and all accessories for any shipping damage.
2. Check the packing list to verify that the shipment is complete.
3. Place the freezer on a level surface.
4. Make sure that the air inlets and outlets are not blocked.
5. Connect to a power source. While the freezer can be used with either the AC

Power Cord for lab, home or office use, or the DC Power Cord for mobile use, it is recommended that the initial pull-down to Setpoint be completed via AC power.

TO USE THE AC POWER SUPPLY
During setup, identify the service power and plug configuration available and then locate the appropriate line cord for the service type you will be using.If the appropriate line cord is not currently installed, simply unplug the line cord from the unit and then plug the appropriate line cord in its place.Plug the other end of the line cord into the power source and then attempt to power on the unit.

NOTE

• Use 15 amp or greater grounded outlet
• Make sure cables are not damaged

When removing the plug, hold onto the plug and not the cord.

Attention
Please do not drag the cord when you remove the connector body or AC power plug. it may damage the cord and plug

TO USE THE DC POWER CORD IN A MOTOR VEHICLE

1. Make sure the freezer remains level. Exceeding an angle of 12 degrees may cause loss of cooling.
2. Plug the DC Power Cord into a 12V/15A or 24V/10A outlet ( Consult your automotive specialist If your vehicle lacks 12V/15A outlets.
3. Plug the opposite end of the cord into the freezer, by pressing it firmly into the connection port and turning clockwise until a click is heard.

Attention
Make sure the connection is tight and secure

DISCONNECTING FROM POWER

1. To turn off the freezer, press the Power button. The light will turn off.
2. Unplug the freezer after the Power light has turned off.
3. If the power is interrupted while running, a sharp noise may be heard. This is due to the Stirling engine shutting down and is not indicative of damage.
4. Clean the freezer with a soft cloth after it has returned to room temperature. Store in a well ventilated space.

FEATURES OF THE FREEZER

DIAGRAMS

SPECIFICATIONS

Ele , ctric Power

| 1Q,QV-240V (±  10°to) AC; 50Hz;

12.V/24V DC from mobile source

---|---
Maximum Po , wer (Current)| llOW(01.5A@220V,4.6A@24V)
Electric Power Range| 110V-264V,50Hz
Electric Supply Rating| 8 amp,o,r gre·ater grounded circu1it
Co , oling Engine| Fr,ee-piston Stirling engi1ne
Type| DW-4525 DW-6025 DW.-8625

‘              ‘

Refrigerant| R-170 (Ethane)

Temperature Range

| DW-4525, +25°C to -45°C DW-6025, +25°C to -60°C DW-8625, +25°C to -86,°C

temperature co , her , ence ±1 °C, adjust.able in 1°1Cin1crements

W or 1 k ambient Temperature !| +5°C to +32°C
Environmenta 1 l Con , ditions .| Non- corro,sive·, non-flamm1able, non-explosive
Storage Volum , e| 25L
Interior Dimensions| 300x 250x 300 mm1(L x W x D)
Ext , er · ior Dimensions| 616x 392x 455 mm1(L x W x D)
Net We 1 igh t, Empty| 17.5kg
Insulation| High perflorm.ance vacuum insulated pan,els,,and polyurethane foam
Noise| <55 dB(A) at .1 met.er
Control Sensor| One RTD {PTlOO Cllass A)
Refrigerating 1 medium 1| helium (He)
Pull · – Down

fro 1 m 25°C Ambient

| DW-4525, 3 h1,o| ,urs at-45°C(Em| 1pty Cabinet)
DW-6025, .4 h1•01urs at-60°C(Empty Cabinet)

DW-8625, 6 h1•01urs a1t-86°C(Empty Cabinet)

Steady State ! Energy Use 25°C A 1 mbient| DW-4525,average pow,er 30 watts at -45,°C(Empty Cabinet) DW-6025,average power 40 watts at -60’°C (Empty Cabinet) DW-8625,average pow,er 70 watts at-86°C (Empty Cabinet)

Temperature Alarm

| DW-4525, N01

.;

DW-6025, N01

;

DW-8625, Q,ver set temperatur , e ±10°,c;

FREEZER OPERATION

How to turn the freezer on
The freezer will automatically turn on when connected to the power supply.

How to power on/off Stirling engine

1. Power on Stirling engine Press @j button, then hold TOJ button for 3-5 seconds. The operation light will light up with a beeping sound, indicating Stirling engine start.
2. Power off Stirling engine Press @j button, then hold TO] button for 3-5 seconds. The operation light will turn off with a beeping sound, indicating Stirling engine stop.

How to change the temperature
Press [8] button, the display then shows the current set temperature. Press [A.J button to increase by 1°C, press [W I button to decrease by 1°C. Press @ button once the desired Setpoint is achieved. The display will then show the current freezer temperature

To see the set temperature
Press the [@J button, the display will show the set temperature.

Over-temperature alarm
If the freezer compartment temperature is 10 C warmer or colder than the Set point for five minutes, it will go into temperature alarm mode. The freezer will make a double beeping sound every 10 seconds. Situations which can affect the freezer’s ability to maintain a steady state or cooling rate include:

• The lid is ajar
• The air vents are blocked
• Power supply problems
• Addition of a large relatively warm mass
• Mechanical and/or electrical problems
• Press the FU button to turn off the audible alarm for 1 hour.

How to switch between power supplies
The freezer should be turned off when you need to switch between power supplies.

• Turn OFF the freezer (Press I button).
• Wait for the free-piston Stirling engine to slow and stop (10 seconds).
• Unplug the freezer from the current power source and plug into the new power source.
• The freezer can be restarted immediately,no wait time is necessary.

NOTES ON OPERATION IN A VEHICLE

• The freezer can run on either 12V or 24V DC power.
• The freezer will shut down automatically if the DC power supplies less than 9V, to avoid damaging the vehicle battery system.
• Do not operate in an unattended vehicle. This may lead to overheating if left in the sun.
• The DC and AC Power connections cannot be used at the same time.

TROUBLESHOOTING

Freezer does not power on

| ****

Power is not getting to the freezerfrom the AC input

| Check the connections to the power supply

Assure that the wall plug is firmly seated

Power is not getting to the freezer from the DC input

| Reseat the connections to the DC power cord

Assure that the DC input has live power

Replace any blown automobile fuses

Freezer does not achieve desired temperature

| ****

Inadequate air circulation

| Clean the Air inlet

Remove air flow obstructions

Inadequate power supply

| Assure that the wall plug is firmly seated
Remove any dirt or debris inside the automotive DC socket or on the plug

Operate freezer only when automobile is running

Improper environment

| Remove freezer from direct sunlight, hot room, etc
Check that freezer is level.

Tilts of more than 12 degrees in some directions will degrade performance

Freezer cools slowly

| Overloading of freezer| Remove some items from freezer
Lid is not completely closed

Lid is openand closedtoooften

| Check for ice buildup, remove if necessary, and properly close lid

Minimize opening and closing oflid

Inadequate air circulation| Clean and unblock air vents
12V plug becomes unusually hot| Dirtor corrosion in the DC socket| Clean the socket

ERROR CODES

STORAGE, CLEANING AND MAINTENANCE

Moisture can form near the door due to the large temperature difference between the ambient temperature and the inside of the freezer. Wipe any water near the openings to prevent ice accumulation. Do not use sharp instruments to scrape ice from the surface.

To clean the inside chamber:

• Turn off the power and allow the freezer to come to room temperature.
• Dry the inside chamber and clean any spills using a soft cloth.

The exterior surfaces can be cleaned as needed by using a soft cloth and mild detergent. Do not use solvent or harsh abrasive cleansers or pads.

Attention

• Do not immerse in water or washing the unit.
• Do not use solvents to clean.

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