Laboratory freeze dryer FD-500F-CE

processfor the food industryfor the pharmaceutical industry

Overview
FD-500F-CE is a commercial and household vacuum freeze dryer designed for long-term preservation and fast rehydration of food and heat-sensitive biochemical materials. The unit combines a separate cold trap and drying chamber, precise shelf temperature control and an industrial-grade refrigeration and vacuum system to support consistent lyophilization results.

Application

• Vegetables: mushrooms, garlic slices, chives, spring onions, green beans, peas, cucumbers, sweet corn, diced carrots, spinach, asparagus, wild greens.
• Aquatic products and meat: shellfish, shrimp, fish, beef, pork, chicken, lamb slices.
• Seasonings: garlic powder, ginger powder, green onion powder, tomatoes, peppers.
• Instant drinks: coffee, tea, soups, soy milk, milk.
• Convenience food: baby food, snacks, field/camping rations.
• Pharmaceuticals: tablets, reagents, powdered injections, herbal medicines (ginseng, deer antler, wolfberry, Panax notoginseng).
• Materials and biology: advanced materials (graphene), flowers, placenta, cell samples.

Main configuration and equipment specifications
Effective area: 4.95 m2
Processing capacity: up to 75 kg/batch (nominal 50–75 kg)
Liquid product capacity: ≈ 70 L (10 mm thickness)
Layer size: 500 mm × 1100 mm
Shelf count: 9 + 1 (radiation layer)
Layer spacing: 47 mm
Minimum shelf temperature: ≤ −40 °C (no-load)
Cold trap minimum temperature: ≤ −55 °C (no-load)
Maximum system vacuum: ≤ 2 Pa
Installed power: 9.5 kW
Total weight: 650 kg
Noise: ≤ 70 dB
Design/manufacturing: factory standard compliant with relevant national regulations (e.g. GB/T5226.1-1996).

Freeze drying chamber components
Box material: carbon steel (stainless steel optional)
Box form: box-type
Inner surface roughness: Ra ≤ 0.5 μm
Door opening: clockwise (top view)
Drying chamber door: organic glass

Shelf components
Shelf material: aluminum (stainless steel optional)
Structure: internal welded with no solder joints on upper/lower surfaces
Surface roughness: Ra ≤ 0.5 μm
Flatness: ≤ ±0.5 mm/m2
Material tray size: 500 mm × 550 mm × 30 mm
Tray material: 304 stainless steel
Number of trays: 18
Effective shelf area: 4.95 m2
Min shelf temperature: ≤ −40 °C (no-load)
Cooling rate: ≤ 120 min (+20 °C to −40 °C)
Heating rate: ≤ 20 min (−40 °C to +20 °C)
Layer temperature uniformity: ≤ ±1 °C
Layer temperature range: −40 °C to +60 °C
Plug pressing: not provided

Cold trap
Vessel material: SUS 304 stainless steel
Form: vertical
Door: organic glass
Coil: copper tube
Surface roughness: Ra ≤ 0.5 μm
Surface area: ≤ 1.5 m2
Ice condensation capacity: ≤ 75 kg
Cooling rate: +20 °C → −55 °C within 60 minutes
Min temperature: ≤ −55 °C (no-load)
Defrost method: electric heating defrosting

Freezing system
Compressor: imported fully enclosed scroll compressor (Danfoss or equivalent)
Refrigerant: low-temperature, high-efficiency, environmentally friendly refrigerant
Compressors: 1 unit
Condenser: air-cooled
Protection/regulation: components from reputable international brands
Optional: cascade compressor for cold trap ≤ −80 °C

Vacuum system
Primary pump: double-stage rotary vane pump (quality brand)
Quantity: 1 unit
System max vacuum: ≤ 2 Pa
Evacuation speed: atmosphere → 10 Pa in < 5 minutes (dry conditions)
Leakage rate: ≤ 10 Pa·L/sec

Control system
Controller: single-chip control
HMI: MCGS Kunlun 7" or Samkoon (configurable)
Intermediate relay: customized
Circuit breaker: Chint or equivalent

Protection
Startup interlocks: machine starts only when all safety conditions are met
Electrical protections: logical interlocks, control and protection functions
Motor protection: overload, over-temperature, phase loss protection
Circulation protection: heating cycle protection
Product protection: heating cut-off on poor vacuum
Cold trap protection: interlocks on vacuum pump startup

Complete machine and infrastructure
Power supply: three-phase 380 V
Installed power: 9.5 kW
Overall structure: separate cold trap and drying chamber structure