BREAKDOWN RECTIFICATION OF MICRONISER

1.0 PURPOSE:
    
    To  describe  a   standard operating  procedure  for  breakdown    rectification of air jet microniser.
    
2.0    SCOPE:
    
    The standard operating procedure describes in detail the method  for breakdown  rectification of microniser.         
    
3.0    RESPONSIBILITY:
    
    The  responsibility of breakdown  rectification  of  microniser  lies  with  the staff of rank not lower  than  the  maintenance  engineer. 
      
The responsibility of preparing, reviewing  and approving  the  standard  operating  procedure lies with the Manager  -  Maintenance,  Head of Production and Head of QAD respectively.
    
4.0    METHOD:
    
4.1    Rectification of product leak.              
        
4.1.1    Isolate  the equipment electrically.

4.1.2    Close the compressed air valve. 

4.1.3    Open the joints whereever the product is leaking.

4.1.4     Check  the  thread joints, if wornout replace them  with  new   joints.
        
4.1.5     Check the gaskets and O rings, replace them if required.

4.1.6    Tighten the joints.           

4.1.7    Open  the  air compressed valve and restore the power  supply   to the equipment.

4.1.8    Test the joints for leak.

4.2     Rectification of chocking of filter bags.

4.2.1    Isolate the equipment electrically.

4.2.2     Close the compressed air valve. 

4.2.3    Remove the top cover of the product collector.

4.2.4    Check the filter bag for chocking.

4.2.5     Dechock the filter bag or replace with new one.

4.2.6    Fix the top cover of the product collector.

4.2.7    Open the air valve.

4.2.8     Restore the power supply to the equipment.

4.3     Rectification of incomplete micronizing.

4.3.1    Check the air pressure, if it is less than specified pressure  attend on air compressor.

4.3.2     Check for nozzle chocking. Dechok, if it chocked.

4.3.3    Dismantle  the grinding unit and check grinding ring for  any   chocking and assemble it back after dechocking.

4.4     Rectification of presence of moisture in the product.

4.4.1    Check  the  moisture separation air filter. If there  is  any  defect in filter replace it with new one.

4.5      Rectification of low rate of micronizing.

4.5.1     Check the vibrator for its effective working.

4.5.2    Check the air pressure if it is less than specified pressure,   attend on the air compressor.

4.5.3    Check  for chocking of lines. If the lines are  chocked,  dechock the lines.

5.0     RECORDING:

    Responsibility of recording the breakdown in the history card    lies  with the staff of rank not lower than  the  maintenance  engineer.

Rectification of microniser, engineering, air jet microniser