■Use overheat pure steam(120C).
■Equipped with cooling water jacket, after sterilizing, it can fast reduce the temparature of the chest.
■Optional pneumatic door lock, it locks automatically.
■Use import sterilization filter to ensure the absolutely sterilized air coming into equipment.
■The chest and various kinds of container and tube are all wrapped with import insulation layer to efficiently avoid from heat transmission.
■Can carry out constant humidity control to the refrigeration humidity.
■Equipped with water circulation pump capable to elliminate residual water in sterilization layer.

■The high-pressure clean thoroughly wash inner surface of the chest and condenser.
■Equipped with large flow rate CIP pump.
■Fixed wit CIP tubing that automatically drains the residual water.
■Use rotary and fixed nozzle with 360-degree spray.
■The hydraulic system uses isolated retractable corrugated tube.

The freeze drier uses the best refrigeration system to freeze the product and condensate the steam produced ruring freeze-drying procedure. Freeze-drying technology requirese the refrigeration system to keep a low temperature status for a long period of time, therefore, the requirements to the refrigeration system are very high. But the freeze drier of Shanghai Yuan Dong Phamaeutical Machinery General Factory can easily help you to reach your goal.

■Uses world famous brand, e. g. Frascold, Danfoss, Copeland, Castel, Edwards, and etc.
■The system uses double stage half sealed piston compressor to reach first class temperature reducing speed rate and the lowest temperature in China.
■The system power equipped is much greater than needed to efficientyly ensure the refrigeration performance.
■Digital and module design has a high pretection to ensure the system to run normally and stably.
■The powerful refrigeration system, liquid spray cooling system and other protection installations keep to the best working temperature and high system reliability.
■The sensitive transducing system can provide alarm and protection in time against abnormal running situation.
■Uses refrigerant conforming to the world environment protection requiment, such as HCFCR22 and HFCRA for choice.
■ Special synthetic lubricating oil can eliminate various kinds of problem due to high temperature of normal mineral oil.

■Standard configuration, uses Edwards double stage oil sealing revolving plate pump.
■Option: Edwards pump.
■Equipped with two vacuum probes, for measuring the vacuum level of freeze drying chest and pump respectively.
■Option: condenser type vacuum meter.
■There are two methods for drying chest vacuum level control:
■Drying chest vacuum level controls the opening and closing of the air inlet valve, introduce the sterilized air from sterilized room.
■Drying chest vacuum level controls the opening degree of the big butterfly valve to reach the purpose of controlling the vacuum level.

■A couple-clamping butterfly valve is equipped between the drying chest and water capturer to keep a no leakage seal in both directions.
■Use labial margin seal design to compensate the change of temperature and pressure during operation.
■Eccentric valve rod and eccentric butterfly valve eliminate the wear-out of upper and lower ends of valve seat during frequent opening.
■May choose electric or pneumatic driving device.
■Import original electric driver can stepless adjust the opening sideness of butterfly valve, control the vacuum level of the drying chest to avoid from being polluted.
■Stainless steel valve body and TEF elastic valve seat conform with GMP specification.
■The drying chest and water capturer are equipped with viewing glass. The viewing glass can be equipped with spotlight to obtain clear procedure monitoring.
■ Shelf refrigerating heating system uses Denmark Grundfos UPS circulation pump, Sweden plate type heat exchanger. The size of the exchanger is small, this reduces the heat conduction mediator and energy consumption, raises the refrigeration efficiency.

The control system characteristics:

■The mains air switch,transformer and AC contactor fixed in electric cabinet are Siemens products.The electric cabinet is secured onmachine frame. all machine pump motors are equipped with overheat protection, solenoid valve and heating circuit are equipped with separate protection.
■The display screen uses Mitsubishii touch screen, PLC programmable logic controller,indicating light,sound-light alarming system, andetc.
■Temperature measuring, pressure measuring, the compponents can work normally under high temperature, ultra-low temperature and high vacuum level with high reliability.
■The control system can display the running status of alll components of the whole system, and can store and process the operation information and various date. It can provide procedure recording report of whole freeze-drying process. It can set freeze-dryingcurve,monitor each status in freeze-drying procedure. It can alarm on failure or abnormal situation, provide cheching for maintenance, the operator can set and modify data and step.