Upright freezer MR-DF-N86A series

laboratoryprocessmanual defrost

Product Overview

• Minus 86°C ultra-low temperature (ULT) freezer designed for long-term storage of biological materials (microorganisms, viruses, blood components, tissues) in laboratories, blood banks, hospitals, research institutes and related facilities.
• Capacity range: 100 L to 990 L across multiple upright and undercounter models.
• Optional CO2 standby system to maintain sample temperature during refrigeration faults.
• Dual-stage cascade refrigeration without mixed gas in cascade design for reliable ultra-low performance.
• Hydrocarbon (HC) refrigerants for high thermal efficiency and simplified maintenance.
• Built-in data logger with touch interface; paperless recorder and remote monitoring optional.
• High-quality branded compressors for extended service life.

Applications / Use

Suitable for individual laboratory use through large-scale sample storage: blood banks, hospitals, epidemic prevention centers, research laboratories, pharmaceutical production, food processing storage and industrial laboratories.

Key Features

• VIP (Vacuum Insulated Panel) combined with PUF insulation for improved thermal retention.
• Optional 7-inch color LCD touch display with USB port for data export.
• CO2 standby system option for additional sample protection.
• Wide-voltage design to accommodate typical supply variations.
• Safety door lock and double inner doors to minimize cold loss during access.

Temperature Control System

• Microprocessor control with large display for clear internal temperature readout.
• Adjustable inner temperature range -40°C to -86°C with 0.1°C resolution.
• Lock and password protection to prevent unauthorized parameter changes.
• Optional 7-inch color LCD touch screen controller.

Safety protection measures

• Alarm functions: high/low temperature, sensor failure, power failure, low backup battery, condenser over-temperature; configurable alarm setpoints.
• Three alarm methods: audible buzzer, visual indicator, and remote alarm output.
• Protection functions include power-on delay and minimum off-time between compressor restarts.

Refrigeration System

• Optimized dual-stage (cascade) refrigeration using high-efficiency compressors to achieve ultra-low temperatures.
• High-efficiency heat exchanger design for improved heat transfer and energy savings.
• V.I.P. panels combined with overall polyurethane foam (CFC-free) ensure insulation performance.
• High-efficiency hydrocarbon refrigerants (examples: R290 / R170 or HC blends depending on model).

Ergonomic & Maintenance Design

• Safety door lock to prevent unauthorized access.
• Double inner doors to reduce cold loss during access.
• Pressure-balanced port design to ease door opening.
• Compatible with 2-inch and 3-inch international standard cryo boxes.
• Heavy-duty casters with locking and adjustable feet for mobility and fixation.
• Accessible condenser and filter layout for easy maintenance and cleaning.

Short Description (bulleted)

• Minus 86°C ULT widely used for laboratory, hospital and industrial biosample storage.
• Capacities from 100 L up to 990 L.
• CO2 standby system option to maintain safe sample temperature.
• Dual-stage refrigeration, HC refrigerants, VIP insulation panels.
• Built-in touch-screen data recorder; paperless recorder and remote control optional.

Specifications (table summary)

Selected models and examples:
Model: MR-DF-N86A-100 | MR-DF-N86A-280 | MR-DF-N86A-360
Cooling performance (°C): -80 | -80 | -80
Temperature range (°C): -40 ~ -86 | -40 ~ -86 | -40 ~ -86
Rated Voltage (V/Hz): 220/50 | 220/50 | 220/50
Exterior material: Galvanized steel with powder coating (all)
Interior material: SS304 stainless steel (all)
Insulation: PUF + VIP (all)
Climate class: N (all)
Cooling type: Direct cooling (all)
Defrost mode: Manual (all)
Refrigerant: HC mixed / R290/R170 depending on model
Cabinet type: Undercounter | Upright | Upright
Power (W): 460 | 520 | 850
Energy consumption (kW·h/24h): 5.5 | 9.5 | 12.2
Accessories: stainless shelves, casters, test hole, door lock, pressure balance port; temperature recorder optional
Display / Controller: 7-inch touch screen with USB; alarms: low/high temp, condenser high temp, power failure, sensor failure; alarm modes: sound & light and remote terminal
Inner door number: 2; Cabinet foam thickness: ~90 mm
Capacity for 2-inch boxes (approx): 60 | 180 | 240
Dimensions and weights vary by model.

Other larger models (examples): MR-DF-N86A-480 | MR-DF-N86A-590 | MR-DF-N86A-730 | MR-DF-N86A-990 — upright cabinets, -80°C performance, temperature range -40 ~ -86°C, rated 220/50 V/Hz, door thickness ~90 mm, inner doors: 2, power examples 920–1,100 W, energy ~13.5–15 kWh/24h, capacities for 2-inch boxes ~320 | 400 | 500 | 720; dimensions and weights vary by model.

Technical Characteristics / Specifications

• Series / Model family: MR-DF-N86A.
• Temperature range: -40°C to -86°C (adjustable, 0.1°C increment).
• Typical cooling setpoint: -80°C.
• Capacity range: approx. 96 L to 1018 L (examples: 100, 280, 360, 480, 590, 730, 990 L).
• Insulation: PUF + VIP panels; cabinet foam thickness ≈ 90 mm.
• Interior: SS304 stainless steel; Exterior: galvanized steel with powder coating.
• Refrigeration: optimized dual-stage cascade; HC refrigerants (R290/R170 or HC-mixed depending on model); high-efficiency heat exchangers; branded compressors.
• Power supply: typically 220 V / 50 Hz (wide-voltage tolerant designs available).
• Power consumption examples: small models ~460–850 W; larger models ~920–1,100 W; daily energy ~5.5–15 kWh/24h depending on model.
• Controller & recorder: 7-inch touch-screen with USB (optional); alarms for high/low temp, condenser over-temp, sensor failure, power failure; sound & light and remote alarm output.
• Options/accessories: stainless shelves, casters, test hole, temperature recorder, door lock, racks & cryo boxes, CO2 standby system, paperless recorder and remote control.