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8 Preventative Maintenance Tips for Haier Biomedical Ultra-Low Temperature (ULT) Freezers

8 Preventative Maintenance Tips for Haier Biomedical Ultra-Low Temperature (ULT) Freezers

Ultra-Low Temperature (ULT) freezers are essential for many scientific research applications. The Haier Biomedical line of ULT freezers are known for their precision, efficiency and reliability. These freezers are designed to maintain ultra-low temperatures, typically ranging from -40°C to -86°C, making them ideal for storing sensitive biological samples, reagents, vaccines and other sensitive materials. Preventative maintenance must be performed to protect both the laboratory freezer and the research it supports. 

Review maintenance tips from the Haier ULT Freezers Use & Maintenance Guide below to help ensure the continued performance and longevity of your facility’s ultra cold freezer, available for purchase in the MIDSCI online store.

How to Perform Preventative Maintenance for High Performance Freezers:

  1. Monitor Vacuum Relief Port (EVERY Use)
    A key feature of Haier Biomedical ULT freezers is the vacuum relief port, which releases the partial vacuum seal in the freezer’s interior after the door is opened. The port should be inspected each time the door is opened and any ice buildup should be removed. Clean and scrape the port on the same schedule as the door gaskets (See #2 below). The vacuum relief port is a delicate piece of plastic, and should be handled with care.
  2. Clean Door Gaskets (At Least Monthly) and Remove Ice from the Seals (Weekly)
    The door seals (gaskets) on an ultra low freezer are crucial for maintaining the freezer’s temperature and preventing cold air from escaping. Damaged or dirty seals can lead to temperature fluctuations, which can negatively impact stored samples.
    • To Check for Damage: Inspect the door seals regularly for signs of wear, such as cracks, tears or deformities — including any streaks of frost, which could indicate a leak. If you notice debris or an excessive buildup of frost, consider increasing the frequency of your facility’s cleaning regimen.
    • To Clean the Gaskets: Gently remove any buildup of frost using a soft cloth or a scraper. Make sure the door is able to properly close and maintain its tight seal.
  3. Clean Buildups of Frost & Ice (Weekly)
    Ice buildup can reduce the efficiency of your freezer storage, and regular cleaning is essential to maintain optimal performance. Gently scrape frost and ice periodically off of the doors and inner chamber. Avoid using abrasive materials that could damage the surfaces. Keep the freezer door closed as much as possible during cleaning to maintain temperature stability.
  4. Defrost the Chamber to Remove Ice Buildup (As Necessary)
    Most modern low temperature freezers, including Haier models, feature a manual defrost system — which means that if your Haier ULT freezer shows signs of ice accumulation in its interior, you should perform a defrost of the freezer as needed. Follow the manufacturer's instructions for safely defrosting the freezer and avoid using sharp objects to remove ice, as this could damage the chamber.
  5. Clean & Inspect the Condenser Filter (Every 1-3 Months)
    The condenser filter helps reduce accumulations of debris on the condenser coil surfaces, which can reduce the efficiency of the cooling process and increase power consumption. Locate the vent cover on the lower front side of the freezer. The magnetic cover can be removed without tools for ease of inspection.
  6. Clean the Condenser Coil (At Least 1x Per Year)
    Use a vacuum or a soft brush to carefully remove dust and debris from the condenser coil at least once per year. The ULT coil is fragile; avoid direct contact and handle it with extreme care.
  7. Schedule Calibration Service with a Certified Technician (Yearly)
    Your Haier ULT freezer should have a calibration service performed by a professional technician on an annual basis. A professional technician can also perform a comprehensive inspection, including checking refrigerant levels, testing the compressor, and ensuring that all components are operating as expected.
  8. Schedule Maintenance with a Certified Technician (Once Per 2.5 Years)
    In addition to regular in-house maintenance, it is important to have your medical grade freezer serviced by a professional technician. The unit’s backup battery must be replaced every two-and-a-half years. Most Haier freezers will also provide an alert when the battery needs a replacement.

 

Take a Look at These Haier Lab Freezers:

Haier Biomedical’s ULT freezers are designed to meet the rigorous demands of scientific research environments. See more Haier upright freezers and scientific supply equipment on the MIDSCI online store. 

Shop Ultra Cold Freezers & Storage Products at MIDSCI
Haier Biomedical Ultra-Low Temperature (ULT) freezers provide an essential solution for facilities that need to store sensitive materials at extremely low temperatures. If you're looking to invest in a Haier ULT freezer or need advice on maintaining your current equipment, reach out to the experts at MIDSCI today. As a national scientific supply company, we offer a range of laboratory equipment and support services to help you optimize your research environment.

Need help picking out a lab freezer? Contact MIDSCI online to request a quote or for expert guidance on Haier Biomedical Ultra-Low Temperature Freezers. To discuss your questions with a biopharmaceutical freezers product expert, call MIDSCI at 1 (800) 227-9997.

 

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