-65°C 236L to 700L Ultra Low Temperature Chest Freezer

The Realmann LOD Series Ultra Low Temperature Chest Freezer is developed for commercial applications requiring storage temperatures significantly below those of conventional frozen food cabinets. With a specified operating range of −40°C to −65°C, this series offers specialized low-temperature storage for suitable frozen seafood, high-value food products, and other materials requiring controlled deep-freezing conditions.

Available in five models—LOD-30, LOD-40, LOD-50, LOD-65, and LOD-80—the range provides usable capacities from 236L to 700L, allowing buyers to select a freezer according to storage volume and installation space.

The cabinet incorporates 90mm thick thermal insulation to help minimize heat transfer from the surrounding environment. A five-sided high-density cooling coil arrangement provides an extended refrigeration heat-exchange structure around the storage compartment.

Each model is equipped with an Embraco compressor, R290 refrigerant, a branded condenser fan, and a digital temperature controller. This refrigeration configuration is designed for the low-temperature operating requirements of the LOD Series, subject to the manufacturer’s rated conditions.

The interior uses stainless steel, providing a corrosion-resistant surface for cleaning and storage operations. The exterior features a brushed metal panel finish, giving the cabinet a professional appearance suitable for commercial refrigeration installations.

Multi-layer door gaskets help reduce air leakage at the cabinet opening, while a main power indicator provides a convenient visual reference for equipment status. A defrost drain outlet facilitates water removal during cleaning and maintenance.

For seafood processors, frozen food distributors, commercial kitchens, and specialized cold storage projects, the Realmann LOD Series provides a range of ultra-low temperature chest freezer configurations with different storage capacities.

As a commercial refrigeration OEM/ODM manufacturer, Realmann supports inquiries for bulk supply, equipment configurations, and specialized low-temperature refrigeration projects.

Key Features & Benefits

1. Ultra-Low Temperature Operation from −40°C to −65°C

The LOD Series is specified for operation across a temperature range of −40°C to −65°C, extending below the typical operating range of standard commercial chest freezers.

This makes the series relevant to applications requiring specialized frozen storage.

Actual temperature capability should be verified under the intended ambient conditions, loading profile, and equipment configuration, particularly when operating near −65°C.

2. 90mm Thick Cabinet Insulation

The cabinet incorporates a 90mm thick insulation layer designed to reduce heat transfer into the low-temperature storage compartment.

For ultra-low temperature applications, cabinet insulation is particularly important because of the large temperature difference between the interior and surrounding environment.

The insulation supports the refrigeration system’s thermal design, although overall energy consumption depends on the complete equipment configuration.

3. Five-Sided High-Density Cooling Coil System

The freezer features a five-sided high-density cooling coil structure.

This arrangement provides refrigeration heat-exchange surfaces around multiple sides of the storage compartment, supporting heat removal from the cabinet interior.

Its performance depends on the complete refrigeration circuit, refrigerant flow, compressor configuration, and operating conditions.

4. Embraco Compressor for Specialized Refrigeration

Each LOD model is specified with an Embraco compressor.

The compressor forms part of the refrigeration system designed to support ultra-low temperature operation.

The exact compressor model and refrigeration circuit should be confirmed when evaluating equipment for continuous operation at the lowest specified temperatures.

5. Stainless Steel Interior Chamber

The freezer features a stainless steel interior suitable for routine cleaning and commercial storage operations.

Stainless steel provides corrosion resistance and a durable cabinet lining, making it practical for facilities handling appropriately packaged frozen seafood and other low-temperature products.

The exact stainless steel grade should be confirmed for projects with specific material requirements.

6. Multi-Layer Door Sealing System

Multi-layer door gaskets help reduce air exchange between the storage compartment and surrounding environment.

Effective sealing is important for ultra-low temperature equipment because air infiltration can increase moisture entry and frost accumulation.

Regular gasket inspection and cleaning help maintain proper sealing performance.

7. Digital Temperature Controller

An integrated digital temperature controller provides an interface for managing operating settings and viewing temperature information according to its configured functions.

This helps operators monitor the freezer during routine storage operations.

For temperature-critical applications, an independent temperature monitoring or alarm system may be necessary and should be specified separately.

8. Brushed Metal Exterior Panels

The exterior incorporates brushed-finish metal panels, providing a professional cabinet appearance for commercial facilities.

The finish supports a clean equipment presentation and routine exterior maintenance.

9. Branded Condenser Fan

The refrigeration system includes a branded condenser fan to support heat rejection from the condenser.

Adequate ventilation around the equipment remains important, particularly when operating at substantial differences between cabinet and ambient temperatures.

10. Power Indicator and Defrost Drain

A main power indicator provides visible confirmation of electrical supply to the equipment.

The cabinet also includes a defrost drain to facilitate removal of water during cleaning and defrosting.

The power indicator does not replace actual temperature monitoring.

Technical Specifications

LOD-30 / LOD-40 / LOD-50 / LOD-65 / LOD-80 Comparison

Additional Product Specifications

Dimensions, capacities, temperatures, basket quantities and container loading figures are reproduced from the supplied specification sheet. The refrigeration circuit and the achievable −65°C temperature under rated ambient and loaded conditions require manufacturer confirmation. R290 is flammable, and suitability for this ultra-low temperature application must be verified for the complete system design.

Commercial Applications

1. Ultra-Low Temperature Tuna and Seafood Storage

Selected tuna and seafood storage operations may require temperatures significantly below conventional frozen storage conditions.

The LOD Series offers a specified temperature range of −40°C to −65°C, making it a candidate for specialized seafood storage projects when its actual operating performance meets the required temperature profile.

For tuna applications, buyers should confirm product temperature requirements, storage duration, loading quantity, and the freezer’s ability to maintain the specified setpoint.

2. Seafood Processing and Distribution Facilities

Seafood processors may require dedicated low-temperature storage for high-value frozen products before distribution or further processing.

The stainless steel interior, thick insulation, and multiple capacity choices support equipment selection for such applications.

The LOD-50, LOD-65, and LOD-80 provide larger storage volumes for operations requiring additional capacity.

3. Specialty Frozen Food Production

Certain specialty frozen food processes require storage at temperatures lower than those maintained by conventional −18°C commercial freezers.

The LOD Series can be considered where the required operating temperature, equipment capacity, and refrigeration performance have been technically verified.

This equipment should not be assumed to provide blast-freezing or rapid pull-down performance without supporting test data.

4. Premium Seafood Restaurants and Commercial Kitchens

Commercial kitchens handling specialized deep-frozen seafood may require dedicated low-temperature cabinets.

The LOD-30 and LOD-40 provide relatively compact options within the series, subject to adequate ventilation and installation space.

Equipment selection should be based on the actual storage conditions required for the food products.

5. Specialized Cold Storage Projects

The LOD Series may be evaluated for other specialized low-temperature storage applications where the specified temperature range is appropriate.

For sensitive materials, buyers should confirm temperature uniformity, control accuracy, monitoring requirements, compatibility, and applicable regulatory requirements.

OEM/ODM Customization and Wholesale Supply

Realmann provides commercial refrigeration manufacturing support for distributors, seafood equipment suppliers, and project buyers.

For specialized storage projects, buyers should provide their target temperature, ambient conditions, product loading, electrical requirements, and required monitoring features for technical evaluation.

Frequently Asked Questions (FAQ)

Q1: What is an ultra-low temperature chest freezer?

An ultra-low temperature chest freezer is a specialized refrigeration cabinet designed to operate at substantially lower temperatures than conventional commercial food freezers.

The Realmann LOD Series has a specified temperature range of −40°C to −65°C.

Q2: What is the difference between a standard chest freezer and the LOD Series?

Standard commercial chest freezers are commonly designed for frozen storage around −18°C.

The LOD Series is specified for much lower temperatures and incorporates 90mm insulation, five-sided high-density cooling coils, multi-layer door seals, and digital temperature control.

These features address the requirements of specialized deep-freezing applications.

Q3: Can the LOD Series reach −65°C?

The supplied technical specification lists an operating range extending to −65°C.

Before selecting the equipment for continuous operation at this temperature, buyers should request test data confirming performance under their intended ambient conditions, storage load, and operating requirements.

Q4: What capacity options are available?

The series offers five usable capacities: 236L, 326L, 426L, 528L, and 700L.

These models allow buyers to select equipment according to storage volume and installation space.

Q5: Is the LOD Series suitable for ultra-low temperature tuna storage?

It may be suitable for specialized tuna storage applications if the verified cabinet temperature performance meets the product’s required storage conditions.

Buyers should confirm the target storage temperature, loading requirements, and operating duration before ordering.

Q6: What is the purpose of the five-sided cooling coil system?

The five-sided cooling coil design provides refrigeration heat-exchange surfaces around multiple sides of the cabinet.

This supports heat removal from the storage compartment, although temperature uniformity and refrigeration performance must be verified through appropriate testing.

Q7: Why does the freezer use 90mm thick insulation?

The 90mm insulation helps reduce heat transfer into the freezer.

Because the LOD Series operates at exceptionally low temperatures, limiting external heat gain is an important part of the overall thermal design.

Q8: What compressor brand is used?

All five models are listed with Embraco compressors.

The specific compressor models and complete refrigeration configurations should be confirmed with Realmann.

Q9: What refrigerant is used?

The supplied specifications list R290 refrigerant.

R290 is a flammable hydrocarbon refrigerant. For ultra-low temperature equipment, buyers should confirm the complete refrigeration system design, refrigerant charge, safety provisions, and compliance with applicable regulations.

Q10: Is the freezer interior made of stainless steel?

Yes. The product description specifies a stainless steel interior.

The exact stainless steel grade has not been provided and should be confirmed if the application requires a particular material specification.

Q11: Does the freezer have digital temperature control?

Yes. All LOD models include a digital temperature controller.

For temperature-sensitive storage, buyers should separately confirm control accuracy, alarms, temperature recording, and any required remote monitoring capabilities.

Q12: Does the freezer require manual defrosting?

The series uses a direct cooling system and may require periodic manual defrosting, depending on frost accumulation.

A defrost drain is provided to help remove water during cleaning and maintenance.

Q13: Which model offers the largest storage capacity?

The LOD-80 is the largest model, providing 700L of usable capacity.

Its external dimensions are 2000 × 750 × 860 mm.

Q14: Can the LOD Series be used as a laboratory or medical ultra-low freezer?

It should not be assumed suitable for laboratory samples, vaccines, pharmaceuticals, or other regulated materials solely because of its stated temperature range.

Such applications may require validated temperature uniformity, alarms, data logging, backup systems, and additional certifications that have not been established for this product series.

Q15: Does Realmann support wholesale and OEM/ODM orders?

Yes. Realmann supports inquiries for commercial refrigeration wholesale and OEM/ODM projects.

Buyers can discuss freezer capacity, operating conditions, technical requirements, production quantities, and shipping arrangements.