Haier DW-86W420, DW-86L628 Temperature recorder, Power supply, Replacement of Recorder Battery

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Optional Accessories

1.Temperature recorder

The ULT Freezer is equipped with a 6-inch temperature recorder for the chamber temperature. When the unit is powered up, the recorder starts working.

For proper operation of the temperature recorder, please follow the procedures below. 1.Open the recorder door to access the recorder.

2.Plug in the 9 volt battery located on the upper right corner of the recorder. This battery is a standby power.

3.Install a new chart by following the diagram below.

9V battery

 

Button

 

Hand

 

Dateline

Button

 

Screw & fixing

Recorder

 

(Figure 5)

The Temperature Recorder

2.Power supply

The temperature recorder requires an AC power supply. If AC power supply is interrupted, the LED of the recorder blinks and the warning indicator turns on. The temperature recorder can also be operated with DC from spare source battery which lasts about 30 hours.(Caution: The battery should remain fully charged. If the unit is not in operation, the battery should be switched off. Ensure that the battery is in good status as a spare power source.) If power fails, the LED of the temperature recorder blinks until AC power is supplied or spare power source is connected. The LED indicator will blink when the power in the battery is low.

Replacement of Recorder Battery

When the green LED on the recorder flashes, there are two ways to inspect the unit.

1)Supplementary power supply (9 volt DC)

If the LED light is off and the recorder stops working, it would suggest that there might be issues associated with the main power supply. Please inspect whether there is a loss of power, a short circuit, or a loose connection. If there is no issue with the main power supply and the recorder starts working normally, please install the backup battery to the recorder. At this time, if the LED stops flashing, the supplementary power supply is normal. If the LED continues to flashes, it means that the power supply is under capacity requirement. It is necessary to replace the battery. The LED green light is off when there is sufficient power to the recorder.

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Proper Usage

If there is leakage of petroleum gas or another flammable gas, close the gas supply valve and open doors and windows to ventilate the air. Do not plug or unplug your freezer unit.

While the equipment is repaired, take precautions not to inhale any chemicals or aerosols existing near the unit. They might be harmful to your health.

Never directly pour water into the unit. The water may cause electric shock or short circuit.

Customers must not dismantle, repair or modify the equipment. Such improper operations may result in fire or personal injury.

Should there be a malfunction in the equipment, power off the unit and unplug the power cord from power supply. Continuous operation with an abnormal condition may result in electric shock and fire.

In the event there is a power outage and recovery, be sure to wait for 5 minutes before the unit power is turned back on. This is to reduce the chance of damage to the compressors and refrigeration system. During a repair operation, power must be disconnected. The power cord should always be protected to avoid damages.

When unplugging the power cord from the socket, use a firm grip on the plug itself for pulling. Do not pull the power cord as this action may strip the wires off the plug causing electric shock, electrical short circuit and fire.

Maximum loading on the each shelf should be not more than 50kg and total loading for whole unit should be not more than 200 kg.Heavier loads may cause damage to the shelving system .

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Contents DW-86W420 Ultra Low Temperature Storage Freezer Table of Contents Features of the Haier ULT Freezer Technical ServiceDescription of Key Parts and Functions Optional AccessoriesCO2 and LN2 backup cooling system Diagram of partsSafety Precautions Proper Usage Power supply Temperature recorderReplacement of Recorder Battery Wiring diagram Refrigeration diagramPre-Installation Information SpecificationsTechnical data Packing list Environment InstallationRecycle Rechargeable Battery Location for installationInstallation Troubleshooting GuideInitial Loading Operation after a power outage Routine MaintenanceTemperature Adjustment and Setting Display and AlarmsBuzzer alarm resumption after cancellation Remote alarm terminalsAlarm Conditions Display and alarm

DW-86L386, DW-86L288, DW-86L626, DW-86L388, DW-86W420 specifications

Haier's line of biomedical freezers, including the DW-86L628, DW-86W420, DW-86L388, DW-86L626, and DW-86L386, showcases the company's commitment to innovation, reliability, and advanced technology in preserving sensitive biological materials. These models are designed to meet the needs of laboratories, hospitals, and research institutions, providing optimal storage solutions for a variety of critical applications.

The DW-86L628 is recognized for its impressive capacity of 628 liters, making it ideal for facilities that require large storage volumes. It features a temperature range of -10°C to -86°C, ensuring that vaccines, biological samples, and pharmaceuticals are stored under precise conditions. With a powerful refrigeration system and an efficient insulation design, this model ensures rapid cooling and maintains consistent temperatures.

The DW-86W420, on the other hand, balances capacity with energy efficiency. This model offers a slightly smaller design, suitable for environments where space is at a premium. It includes a user-friendly digital display that allows for easy monitoring of temperature and system performance, while also providing real-time alerts for any deviations outside of the set parameters. Additionally, it is equipped with a patented eco-friendly refrigerant, reducing the environmental impact while maintaining high performance.

In the DW-86L388, Haier emphasizes robust safety features. This freezer is engineered with a dual-lock system to prevent unauthorized access, alongside an advanced alarm system that notifies users in the event of power failures or temperature fluctuations. This level of security is crucial for laboratories that manage valuable specimens.

The DW-86L626 is tailored for versatility and comes with adjustable shelving and organization options, allowing users to configure the interior to suit their storage needs. Its peak temperature recovery time is remarkably quick, ensuring that samples remain secure even after door openings.

Finally, the DW-86L386 combines compact design with advanced technology. It is aimed at users with limited space, yet it does not compromise on storage efficiency. The unit is equipped with energy-saving modes, reducing operational costs while ensuring optimal performance.

In summary, Haier's DW-86 biomedical freezer models stand out for their high performance, reliability, and thoughtful design tailored for the rigorous demands of biomedical storage. With an emphasis on safety, energy efficiency, and user-friendly features, these freezers are a smart choice for any facility focused on preserving vital biological materials.
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