Operating Procedure of Air Handling Units and Ventilations Units

• Objective:To lay down an Operating Procedure for Air Handling Units, Exhaust,Supply and Ventilations Units.

• Scope:This Standard Operating Procedure is applicable to the formulation plant of Pharmaceutical Company.

• Responsibility:
  • The Concerned Technician shall follow the Operating Procedure as per this SOP
  • The Officer/Executive-Engineering shall be responsible for implementation of the procedure as per this SOP.
• Accpuntability: Head-Engineering/Designee shall ensure the compliance of the procedure as per this SOP.
• Abbreviations and Definitions:
• MCC :Machine Control Center
• BMS : Building Management System
• VFD : Variable Frequency Drive
• DDC : Digital Display Control
• RH : Relative Humidity
• RA : Return Air
• AHU : Air Handling Unit

• Procedure
• In Auto Mode

• Pre Startup Checkup: 

• Ensure Power supply shall “ON” from MCC panel for all Air Handling Units,Exhaust and Supply and Ventilations Units.
• Ensure Chilled Water and Hot water circulation is going on. Working Pressure of Chilled water and Hot water shall be more than 1 Kg/Cm².
• All VFD’s and Starters shall be in remote/auto mode.
• UPS power supply to BMS and all DDC panels shall be “ON”.

• Starting Procedure:
• All AHUs, Global Exhaust, Global Supply and all ventilation Unit shall start through BMS which is Programmed for as per following sequence:-
  • Core Corridor’s AHUs  and  Exhaust Unit shall start before 10 minutes of other AHUs as scheduled.
  • After 10 minutes all other AHUs, Supply and Ventilation Units shall start as scheduled.
  • All AHUs are programmed for Design Temperature and RH settings. If there is any change in room condition requirement then Engineering-Executive/ Officer can only change the setting.
  • There are three level securities Password in BMS login.
    • One is primary level for operator. Operator shall be authorized for data checking only he can also take printout of data like RA Temperature, RH.
    • Second level is for Engineering persons who can change the:
      • Room condition settings.
      • Change in Alarm setting.
      • To make new login for Operators
    • Third level is for Administrator. In this level only ABB Engineer is authorized to change all setting, Change password of Second Level and reprogram the system.
    • Record all the data after every three hours as per Annexure-I.
  • In Manual Mode
    • Pre Startup Checkup
      • Ensure Power supply shall “ON” from MCC panel for all Air Handling Units,Exhaust and  Supply and Ventilation Units.
      • Ensure Chilled Water and Hot water circulation is going on. Working Pressure of Chilled water and Hot water shall be more than 1 Kg/Cm².
      • All VFD’s and Starters shall be in Manual/Local mode.
    • Starting Procedure
      • Start the core corridor AHU’s along with exhaust unit to maintain positive pressure in core corridor.
      • Start the all other AHU’s along with ventilation units after 10 minutes of Core Corridors AHU’s and Global Exhaust Units.
      • Record all the data after every three hours as per Annexure-I.
  • Forms and Annexure:
    • Logbook : Annexure – I
  •  Distribution
    • Master Copy : Documentation Cell
    • Controlled Copies :Engineering, Quality Assurance, Production,Warehouse, Quality control, Administration and House Keeping.
  •  History

Date	Revision Number	Reason for revision
–	00	New SOP

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