Freeze Dry Machine | Cuddon Freeze Dry

By: Cuddon Freeze Dry  06-Dec-2011
Keywords: Stainless Steel, Hot Water, Heating System

The FD18 general purpose freeze dry machine was designed after consideration of the factors necessary for food freeze-drying techniques. This freeze dry machine is capable of drying a variety of biologicals, blood, plasma and pharmaceutical products.

FD18 Specification Summary

Turn-Key Service

Unless otherwise specified, Cuddon Freeze Dry machine sales include CIF freight to your nearest international seaport, installation/commissioning/staff-training by Cuddon engineers, and a full 12-month warranty.

Capacity and Cycle Time

Cuddon Freeze Dry's quality acceptance test is to sublimate and condense the vapour condenser capacity of ice within 24 hours. For the FD18, this equates to 18kg of ice.

Construction Material

The FD18 Freeze Dry Machine chamber, hinges, shelf modules, trays and vapour condenser are constructed from AISI 304 stainless steel.

Chamber

Shelf module (x1) and vapour condenser are contained inside the chamber.
Acrylic door allows observation of both the vapour condenser and product trays during the drying cycle.
The chamber is fitted with stainless steel pneumatically operated valves that isolate the vacuum line connection, drain, water defrost and vacuum release.

Modular Shelf Heating Plates

Plates fabricated from T304 stainless steel with 2B finish.
The FD18 Freeze Dry Machine contains 1 x shelf module with 5 heat plates (shelves). Top plate provides radiant heat only.

Trays

Two sets of T304 stainless steel trays are provided as standard. Tray trolleys are optional.

Heating System

Electric boiler, connected in series with the heat plates. A cooling heat exchanger is provided in the circuit for reducing the temperature of the plates.
Heating fluid is glycol based and is circulated by a centrifugal pump, allowing heated or cooled fluid to be circulated through the plates on demand of the electronic load controller.

Vacuum System

Vacuum pump is connected to the chamber by loop piping and pneumatic isolating valve. Pump exhaust is vented to the exterior of the building housing the freeze dryer.

Refrigeration

Refrigeration condensing unit is purpose-built with capacity control to allow economical use of the low-temperature R507 refrigerant. Includes air cooled condenser.

Vapour Condenser

T304 stainless steel tube in parallel circuits to form a direct expansion refrigerated coil.
Defrosting ice after a product cycle is by water. Hot water recommended for fast defrost.

Low Temperature Option

A lower temperature option can be quoted if required, giving –55°C vapour condenser temperature, and –35°C/+70°C shelf freezing/heating.

Control System

OMRON PLC interfaced with OMRON touchscreen control panel. Screen includes graphic overview of freeze drying system. Automated system will ramp/reduce energy to govern sublimation pressure to pre-set parameters.
15 x 15-step recipe programming capacity, 250 batch storage, software for data retrieval and analysis. In-built modem allows remote access for monitoring and service.

Keywords: Condensing Unit, Construction Material, Cooling Heat, Freeze Dry, Heat Exchanger, Heat Plates, Heating System, Hot Water, Machine Sales, Modular Shelf, Pneumatically Operated Valves, Radiant Heat, Refrigeration Condensing Unit, Stainless Steel, Stainless Steel Trays, Stainless Steel Tube, Steel Trays, Steel Tube, Tray Trolleys, Vacuum Line, Vacuum Pump, Vacuum System,

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