OPERATION OF AHU

1. OBJECTIVE

              To lay down the procedure for operation of AHU.

• SCOPE

This SOP is applicable in Engineering for operation of AHU.

• RESPONSIBILITY

Supervisor / Executive          :

:

To follow the procedure

• ACCOUNTABILITY

  Head Engineering                       :           System Compliance

•     PROCEDURE
  • Operation: Pre Startup Checks:
    • Ensure that the electrical supply is available for Air Handling Units.
    • Ensure & Check chilled water is flowing through cooling coil by observing the pressure gauge located in the outlet line. Out let pressure shall be NLT 1.0 Kg/cm².
    • Ensure & Check Hot water flowing through Hot water heating coil by observing the pressure gauge located in the outlet line. Out let pressure shall be NLT 1.0 Kg/cm².
    • Hooter alarm shall be ON at the time of AUH ON & at the time of OFF it shall be OFF
  • Switching ON the Air Handling Unit:
    • Switch ON the Air Handling Units by pressing the green button on the panel and red indicator should glow Check Motor bearings and lubricate the bearings.
    • Air Handling Units shall run continuously until unless it is informed by concerned department.
    • Sequence of Switching ON the Air Handling unit.
    • When the AHU is in OFF condition, first switch ON the more pressurized area AHU, with respect to adjacent area AHU.
    • Then switch ‘ON’ the less pressurized area AHU & continue the series according to the area pressure.
    • When the AHU is in running condition, first switch OFF the less pressurized area AHU, with respect to adjacent area AHU.
    • Ware House department Chemist / Officer shall be responsible for air handling unit ON OFF    procedure for all sampling & dispensing area AHU.

Note: If Hooter alarm show, stop the AHU & check AHU for any abnormality

• Sequence of Switching OFF the Air Handling unit:
• Get the confirmation from concerned department for switching OFF the Air Handling Unit.
• AHU operation record shall be maintained by operator and verified by concern department.
  • Check the Manometer reading for cleaning condition of filter. It should be between 5 – 20 mmHg. If it shows out of specification, clean the filter.
  • Record the reading of manometer.
  • Operate the AHU of core area on 24 Hour basis. Supervisor shall switch OFF AHU, after getting written information from user department.
  • Engineering department shall inform to concern department for filter cleaning & Preventive maintenance of AHU.    

6.0       TRAINING

Trainer   : Head – Quality Assurance& Engineering Department.

            Trainees : Engineering- Executive & Supervisors. 

7.0       DISTRIBUTION

Master Copy                     :          Quality Assurance Department

Controlled Copy               :          Engineering Department  

Display Copy                    :          Engineering Department  (If Required)

  8.0 ATTACHMENTS

              Nil

• REFERENCES       

In-house

    10.0 ABBREVIATION

Abbreviation	Extended Form
EG	Engineering
SOP	Standard Operating Procedure
QA	Quality Assurance
WH	Warehouse
NA	Not Applicable
MB	Microbiology

      11.0 REVISION HISTORY OF CHANGE

Sr. No.	Date	Revision Details	Revision No.
1	18/01/2020	New SOP	00