Description

SPECIFICATION: –

• Fully automatic PLC controlled Horizontal Rectangular Autoclave (Steam Sterilizer), floor mounted with pre and post-vacuum treatment and with loading equipment.
• 235 ltrs capacity, operatable at 121°C at 15 PSI pressure.
• The sterilizer supplied will be supplied with automatic vertically sliding double door electro– pneumatically controlled, with door safety features.
• Pressure sensor system will be available in the chamber to monitor the chamber pressure. Chamber will be completely depressurized before the door seal is retracted by vacuum.
• Door chamber will not be opened when chamber is pressurized.
• A mechanical safety edge stops the door if it is obstructed while closing, thus protecting operator & loading equipment.
• Cycle will not start if the door is open or not properly locked.
• The door seal will be made of silicon rubber gasket & on commencement of the process the door gasket is to be pressed against the rear force of the door by steam/air to ensure the door remains closed during the process.
• The chamber and doors will be made of solid, high quality 316 Stainless steel.
• The chamber floor will be slightly sloped towards an internal drain to facilitate drainage.
• A stainless steel mesh strainer will be provided to protect the drain port from blockage by debris.
• The chamber will be mounted on a stainless steel framework.
• Surface Treatment: The internal surface will be electro-chemically treated or mechanically treated for high quality smooth finish to facilitate cleaning. The resultant surface will be polished with 1.25 μm or less fineness to protect against corrosion. The internal corners should be rounded off to facilitate efficient cleaning.
• The sterilizer jacket and door will be completely insulated to keep the autoclave cool on the outside. The insulation should be completely encased in rigid removable sheet housing.
• The jacket will be made of 316L quality stainless steel with pressure gauge / digital display of jacket pressure.
• The sterilizer will have inbuilt steam generator of adequate capacity. In inbuilt steam generator will be made of 316L quality stainless steel
• It will have a built in thermostat, pressure safety valve & water level glass gauge inspection device or water level indication on screen visible from service area.
• The heating element will be of sufficient capacity to make the sterilization process faster with maximum cycle time of 45-50mins in pre vacuum.
• It will also have the automatic blow down valve & degassing system for feeding water to steam generator.
• All the piping system will be made of Stainless Steel (SS 304).
• All the process valves will be stainless steel & will be pneumatically operated piston valves for longer trouble free operations.
• All the non-standard components will be non-proprietary & should be easily sourced.
• All the hot pipes will be properly insulated. Safety valves should be made of stainless steel.
• Primary piping & fittings will be stainless steel tri-clamp fittings.
• Primary components: 316 quality tri-clamps fitting components like – Manual valve, non-return valve, pressure regulator, pneumatic valves, and steam trap etc.
• Air filter will be provided for filtering the atmospheric air before entering inside the chamber. The filter separation efficiency will be higher than 99.998% for particle size less than 0.3μm.
• The control system will be PLC based system specially designed for sterilization application.
• Control system will have touch sensitive, 7 inches or more color display interface at operator loading side while it should have normal interface at unloading side.
• Apart from main PLC based control system the sterilizer will also have additional independent monitoring & documentation system which constantly cross checks the safety systems & time.
• Multiple password access levels (specify number) will be provided to control access/operation of the machine preventing unauthorized access.
• These access levels will be user selectable. The control system should have CPU processor with battery back-up & nonvolatile memories, Digital input/output controls, analog measuring inputs & COM ports for printer & PC connectivity.
• With the standard factory configuration, calibration of the temperature circuits and calibration of the pressure circuits require an access code.
• The sterilizer will have  five temperature & one pressure sensors.
• The sensors will be PT100 sensors to confirm Class A of the IEC 571 standard, with accuracy of ± 0.1˚C while the pressure sensor will have the accuracy 1% over the range of 0-5 bar.
• Each sensor circuit will be calibrated with individual constants to correct the deviation in manufacturing and aging.
• Automatic process checking & failure correction will be possible by the control system.
• The range of alarm will include over temperature , pressure sensor failure, phase time-out, doors not properly closed, power failure (less than 10 sec should be ignored), Continuous self-checking of all the safety devices, low water level ,water in chamber etc will be possible.
• All the alarms will be audio and visual.
• Sterilizer will have the two rails for easy loading, shelf rack with shelves (carriage) with 1 set of loading and unloading carts & racks from our own manufacturing.
• The autoclave will be equipped with an alpha-numeric thermal printer which prints the each cycle parameter performed by the sterilizer. The
  measured values of temperature and pressure are printed at fixed time intervals, according to various phases of the sterilization process such as 4 minute time interval for vacuum, 1 minute time interval for sterilization, and the start and end time of the drying phase.
• All these time intervals will be user defined. We will supply customized time intervals as desired by the user prior to order delivery.
• High vacuum pump (water ring type) should be provided & mounted on vibration isolator for quite operations.
• It will also have low water level alarm to protect it from dry run.
• The sterilizer will be designed to operate various programs.
• Apart from standard cycles, special cycle should be programmed by an authorized supervisor code only.
• Below listed cycles will be present
• 1.HPHV cycle at 115°C
• 2.Vacuum cycle
• 3.Bowie Dick Cycle
• 4.Vacuum leak test cycle
• 5.Standard Cycle at 121 °C
• 6.Warm up cycle
• It will meet EN ISO / IEC directives and product will be BIS (IS 3829 Part-I) certified.
• Will pass a hollow load (A) test (Batch monitoring system).
• Will Supplied with High vacuum compressor and water purifier to supply water for steam genaration.
• IQ, OQ and PQ will be supplied at the time of installation.