SOP FOR CLEANING OF FILTERS

1. OBJECTIVE

To lay down the procedure for cleaning of filters.

• SCOPE

This SOP is applicable in Engineering for cleaning of filters.

• RESPONSIBILITY

HVAC Operators/ Engineers

:

To follow the procedure

• ACCOUNTABILITY

Head Engineering                                        :    System Compliance

• PROCEDURE
  • Switch off the Air Handling Unit (AHU) of which filters to be cleaned and display the `Under Maintenance’ status label.
  • Person carrying out the filter cleaning activity should wear following apparel:
    • Clean apron & Cap
    • Nose mask
    • Rubber hand gloves
  • Open the access door of filter section and grill of return.
  • Remove all the filters and put it into the polythene bag.
  • Close the access door & grill of return of filter section.
  • All filters shall cover in polythene bag.
  • Take the filters to ‘Filter Cleaning Area’.
  • Remove the filters from polythene bag in filter cleaning room and put the filter in reverse direction to the normal flow of filter in filter cleaning both.
  • Ensure the required utility provided to the system.
  • Switch on the power.
  • Open the compressed air valve and clean the filter with using compressed air and allow it to dry. Ensure that filters are visually cleaned.
  • Close the ‘compressed air’ valve.
  • Open the water tap and clean the filters with Potable water.
  • For drying the cleaned filter again open the compressed air valve and dry the filter.
  • Close the ‘compressed air’ valve.
  • Remove the filter from filter cleaning station and check visually for its integrity.
  • Drain out the water from after cleaning the filters.
  • Put the filter into fresh transparent polythene bag and transfer to respective area.
  • Switch off power supply after completion of activity.
  • Open the access door or grill, wipe the filter section, coil section, grill and blower using dry and clean duster.
  • Fix back the clean filter in the filter section.
  • Close the access door or grill ensure no leakage from door gasket and grill.
  • Maintain the record of filter cleaning (Annexure-I).
  • Ensure the power that it should be off before opening the access door or grill of AHU.
  • Wear necessary apparel during filter cleaning.
  • Frequency:
    • Weekly for return filter (Riser).  
    • Every 15 days for AHU filter.
    • Sampling booth (RLAF) riser after sampling completion of API Materials.
    • Dispensing booth (RLAF) riser after complete batch dispensing.

• TRAINING

Trainer   : Head – Quality Assurance& Engineering Department.

Trainees : Engineering- Executive & Supervisors.

 DISTRIBUTION

Master Copy                 :          Quality Assurance Department

Controlled Copy           :          Engineering Department  

Display Copy               :          Engineering Department (If Required)

• ATTACHMENT

Sr. No.	Annexure No.	Title	Format No.
1	NA	NA	NA

• REFERENCES         

In-house

1. ABBREVIATION

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

1. REVISION HISTORY OF CHANGE

Sr. No.	Date	Revision Details	Revision No.