Upright freezer LFZ-86LD series

laboratoryprocessmanual defrost

Short description

• Dual refrigeration system: when one circuit is stopped the standby circuit maintains target temperature down to −86°C, ensuring continuity for long-term biological storage.
• VIP + special PU foam insulation, total thickness 150 mm for improved thermal retention.

Application

• Designed for long-term preservation of viruses, microorganisms, vaccines, biological tissues and organs, specialized foods, medicines and reagents.
• Intended for laboratories, research institutes, hospitals, public health and epidemic control centers, and industries requiring ultra-low temperature storage.

Refrigeration system

• VIP + special PU foam insulation 150 mm.
• Dual-cascade direct-cooling system delivering reliable performance up to 43°C ambient temperature.
• Modular design: major cooling components are replaceable and serviceable to extend operational life.
• Uses Temperite oil separator, Tecumseh/Secop compressors and CFC-free refrigerant.

Temperature controller

• Microprocessor temperature controller with touch LCD for precise status and setpoint management.
• USB port: export three months of temperature and alarm history via USB drive.
• Optional Wi‑Fi monitoring module and dedicated remote monitoring software available.

Security

• Comprehensive alarms: high/low temperature, high ambient temperature, sensor fault, power failure, voltage anomaly, low battery, door ajar, filter check, condenser fault.
• Audible and visual alarms; remote alarm port and messaging alarm optional.
• Alarm logic: audible alarm resumes after prolonged fault even if muted; backup battery supports alarm up to 72 hours after mains loss; battery-life warnings prompt replacement.
• Keyboard lock and password protection to prevent unintended parameter changes.
• Power-on delay to avoid large simultaneous inrush currents at power restoration.

Features

• Removable condenser cover for easy maintenance and cleaning.
• Reserved port for circular-chart recorder installation.
• Protective covers for power switch, external alarm port and USB port.
• Safety lock to prevent abnormal door status.
• Removable inner door and adjustable stainless-steel shelves.
• Professional double test hole.
• Adjustable foam wheels for installation, leveling and maneuvering.
• Optional frozen rack available.
• Foamed inner and outer doors, forced inner-door handle, three layers of silicone seals.
• Noise damping: high-density fire-proof sound-absorbing material around components.
• Wide ambient design: full operation down to −86°C with ambient 10°C–43°C.
• Wide voltage design: supports nominal 220V with operating range approximately 187V–242V.

Technical parameters (table)
Model | LFZ-86L408D | LFZ-86L588D | LFZ-86L838D
Specs - small door | 2 | 2 | 2
Shelves | Shelf | Shelf | Shelf
Refrigeration method | Direct Cooling | Direct Cooling | Direct Cooling
Defrosting method | Manual | Manual | Manual
Refrigerant | Mixed | Mixed | Mixed
Energy consumption (kWh/24h) | 11 | 15.5 | 24
Noise level (dB) | 53 | 53 | 55
Ambient temp. (°C) | 10~32°C | 10~35°C | 10~32°C
Temp. range (°C) | -40 ~ -86°C | -40 ~ -86°C | -40 ~ -86°C
Compressor Brand/Quantity | Secop / 2 pcs | Secop / 2 pcs | Secop / 2 pcs
Standby system reach temperature | -80°C | -70°C | -70°C
Display mode | TOUCH LCD | TOUCH LCD | TOUCH LCD
Voltage/frequency (V/Hz) | 220/50Hz | 220/50Hz | 220/50Hz
Apparent power (W) | 825 | 1362 | 1470
Power (W) | 725 | 800 | 840
Current (A) | 5.7 | 6.9 | 6.5
Effective volume (L) | 408 | 588 | 838
Net/gross weight (kg) | 215 / 245 | 249 / 275 | 275 / 305
External dimensions (W×D×H mm) | 891 × 992 × 1945.5 | 891 × 1155 × 1994.5 | 1179 × 1135 × 1994.5
Internal dimensions (W×D×H mm) | 606 × 575 × 1180 | 606 × 738 × 1310 | 894 × 718 × 1310
Packing size (W×D×H mm) | 954 × 955 × 2094 | 950 × 1118 × 2185 | 1212 × 1098 × 2185
Alarms (selected) | High & low temp / power off / voltage abnormal / sensor failure / filter check / thermostat fault / backup battery fault / condenser failure / ring temp / door switch (all models: √)
Accessories (selected) | Casters: √ (models) | Test hole diameter: 1/25 MM | USB: Yes | Remote alarm: Yes | RS232/485 interface: Yes
Backup systems | CO2 backup: Optional | LN2 backup: Optional

Technical specifications

• Series: LFZ-86LD Series
• Temperature range: −40°C to −86°C
• Insulation: VIP + special PU foam, 150 mm
• Refrigeration: Dual-cascade direct cooling (dual systems: primary + standby)
• Compressors: Secop (2 pcs)
• Display: Touch LCD; USB data export; optional Wi‑Fi monitoring
• Power supply: 220V / 50Hz (wide-voltage design)
• Available volumes: 408 L, 588 L, 838 L (models LFZ-86L408D, LFZ-86L588D, LFZ-86L838D)
• Weight (net/gross): 215/245 kg up to 275/305 kg depending on model
• Dimensions (ext/int): see technical table above (mm)
• Alarms & safety: multi-condition alarm system, 72 h backup battery alarm, password lock, power-on delay
• Optional backups: CO2 or LN2 backup systems available