• Delvac Pumps Private Limited

Shelf Freeze Dryer

Delvac Pumps offers Lyodel Shelf Freeze Dryers, specially designed for flexible and reproducible production cycles. Highlights: easy to use separate stainless steel chamber/condenser; hermetic type refrigerating compressor DD8; double stage oil sealed rotary pump digital vacuum and temperature indicators; and a wide range of accessories that include also microprocessor for automatic control system compact size, supplied with trolley. Using Lyodel-Shelf, materials can be processed in a wide range of product containers with provision for sealing under vacuum or inert gas. The freeze dryer consists of stainless steel (AISI304) drying chamber with easy accessibility and visibility using insulated transparent Perspex (poly-acrylic) door. The drying chamber has one or two shelves that are cooled through direct expansion of refrigeration circuit and heated by an electrical resistance at low voltage of 50 V sunk in the plate thereby ensuring excellent heat exchange. Vapour condenser: cylindrical, constructed in stainless steel (AISI304) with an external copper coil, cooled by direct expansion with a maximum condensing capacity of 5 kg of ice. Defrosting takes place by reversing the refrigerating cycle of the service compressor to the condenser. The refrigerating system of the shelf freeze dryers consists of a single refrigerating unit using hermetic compressor and non-CFC refrigerant, operating both on the shelf and on the condenser, thereby guaranteeing system performance flexibility and safety. For precise control of freezing, primary drying and a secondary drying the unit has a microprocessor based programmable temperature controller with 2 relay outputs for shelf heating and cooling. Shelf temperature and product tray temperature are displayed. Keys are provided for changing the set programme as per the user need. These are available in various models.