4 rack freeze dryer

Our entry-level system, the TSS-447 is a great choice for those getting started with freeze drying.

188 shelf capacity, this walk-in freeze dryer will set you apart from the small shops.

The TSS-447, an entry-level 4-rack freeze dryer by TechSource Systems, is an ideal choice for those starting their freeze-drying journey. With a 188-shelf capacity, this walk-in freeze dryer distinguishes itself, setting users apart from smaller shops. Mechanical features include an all-stainless-steel rib-reinforced process chamber, Leybold SP630 vacuum pump, and a low-temperature chiller (-40C to 20C). The PLC controller, featuring Opto22 GROOV technology, ensures safety with user-programmable vacuum cycles and 96 unique recipes. Independently heated shelves, precise heat input matching sublimation requirements, and three heat control zones per rolling rack enhance electrical efficiency. This entry-level freeze-drying system combines reliability, performance, and user-friendly operation.

Base unit turn key price with all components: $625,000

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freeze dryer small

TSS-447 — Small Freeze Dryer Description


  • All stainless steel rib reinforced process chambers
  • Leybold SP630 vacuum pump with WSU 2001 blower pump
  • Engineered to size low temperature chiller -40C to 20C (package system)
  • High vacuum rated valves (roughing, fore line, vent)
  • Stainless steel electrical raceways
  • Stainless steel electrical enclosures
  • Empty chamber maintains under 10 microns pressure
  • Trays are standard 18"x26" baking sheets
  • 4-rack system

PLC Controller

  • Opto22 GROOV PLC controller
    • Opto22 open source programming
    • Compatible with all major PLC types
    • Full safety interlocks to maintain employee safety
    • user-programmable vacuum cycles
    • 96 user-programmable unique recipes
    • manual operation of all parameters with user input batch ID
    • password-level protection for operator access
    • native VPN client accessible
    • web based GROOV view interface
    • node-red open source programming available for custom programming


  • Each shelf is independently heated
  • Heat input is engineered to match sublimation requirements
  • each rolling rack has three heat control zones monitored by dual independent temperature sensors
  • Electrical control panels distribute all power to:
    • Chiller
    • Vacuum system
    • Heaters
    • Auxiliaries

TechSource Systems TSS-447 Details

Feature ManufacturerValue
Vacuum systemLeyboldSP630
RefrigerationFluid Chiller Inc.80,000 BTU/hr @ -40℃
Condenser Surface Area176 ft2
Condenser Ice Capacity1500 lbs
Temperature Control Zones12
Temperature Sensors24 per
Removable Shelves47 per
Heater Power3 phase/60Hz 230v/120a
Vacuum and Mechanical Power3 phase/60Hz 460v/45a
Chiller Power3 phase/60Hz 460v/60a
Compressed AirCDA60 PSIG / 10 lpm
Chiller FluidDynaLene HC-FG
ControlsOpto-22GROOV-EPIC PLC