Blood Plasma Freezers

Creating the proper environment for rapidly freezing and storing blood plasma is critical. Maintaining the exact temperature range required takes a reliable enclosure plus heavy-duty refrigeration systems. Norlake Scientific Enviro-Line blood plasma freezers provide both, plus much more.

Enviro-Line freezers feature 5-inch thick wall, ceiling and floor panels to ensure a consistent -40°F in storage and freezer sections. In addition, industrial refrigeration systems are constructed with high-quality components to meet the demands of blood plasma storage and freezing.

Enviro-Line Blood Plasma Freezer Features

• Energy-efficient polyurethane-foamed panels provide maximum insulation with an R-value of 40.0
• The standard blood plasma freezer layout includes an ante-room. This area reduces ice formation by providing a barrier between ambient air and -40°F conditions in the freezers.
• UL-approved control panel with circuit breakers and multiple audio-visual alarms for added safety
• Pressure relief ports disperse moisture in the air to reduce frost accumulation and equalize the air pressure in the walk-in to make it easier to open doors.
• Heavy-duty door provides a dependable seal and features adjustable hinge backing plates always to ensure a proper fit in the door opening
• Durable diamond tread floor finish with optional finishes available

The typical layout of an Enviro-Line blood plasma freezer.

Industrial Refrigeration System Features

• Built-up condensing units with two-stage compressors in plasma and storage freezer sections
• A separate condensing unit cools the ante-room
• Condensing units feature factory pre-wired and mounted components for simple installation
• Evaporator coils, specially designed for ultra-low temp environments, are ready to mount in position
• Optional backup refrigeration systems to secure against service interruption available for each compartment

Refrigeration systems consist of condensing units with two-stage compressors for the plasma and storage freezers with an additional condensing unit for the ante-room. Each condensing unit has a matching evaporator coil.

Patented LogiTemp® Plus With Reverse Cycle Defrost System

LogiTemp® Plus settings are accessible through a detachable tablet interface on the freezer's front.

Enviro-Line blood plasma freezers are equipped with the LogiTemp Plus electronic controller system to increase the safety of stored products while reducing energy and installation costs. LogiTemp boosts system efficiency and provides many other benefits as an integrated part of refrigeration systems.

• More precise and reliable controls than an all-mechanical system for increased product safety
• Easier installation with no wiring required between evaporator coils and condensing units (2 pairs of low voltage wires, typically thermostat cables, are required to operate the Reverse Cycle Defrost valve and the compressor relay at the condensing unit)
• LogiTemp Plus patented design saves up to 27% more energy than an all-mechanical system
• Demand Defrost technology defrosts when needed only for further energy savings
• System settings are accessible through a detachable tablet interface on the freezer's front. Operators may monitor and adjust refrigeration settings on site or remove the tablet and take it with them for remote access.
• Operators may access system performance data from any other device with an internet connection, including PC or Mac desktops and Android or iOS smartphones.
• No need for a service tech to climb onto a roof or enter the freezer to monitor or adjust the refrigeration system

Operators may access system performance data from any other device with an internet connection.

Reverse Cycle Defrost Function

Reverse cycle defrost is controlled by the LogiTemp® Plus board located inside the evaporator coil.

When ice builds up and blocks evaporator coils, the coils lose the ability to transfer heat properly. Temperatures in a refrigerated space then rise, resulting in product loss. Each LogiTemp Plus system has the reverse cycle defrost function that completely removes frost build-up in coils to protect your plasma.

Reverse Cycle Defrost offers several advantages:

• It helps prevent product loss by completely and rapidly removing ice build-up in evaporator coils. Reverse Cycle works from the inside of the coil outward compared to less efficient methods that work from the outside.
• It reduces defrost energy usage by up to 80% over traditional electric heaters
• It performs a defrost in as little as 3 to 5 minutes. Shorter defrost times protect product integrity. The average defrost time for a freezer with electric heaters is 20 to 30 minutes.
• It adds refrigerant savings due to reduced charge

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