AIR CURTAIN CLEANING AND MAINTENANCE

1.0 PURPOSE :
To provide a procedure for cleaning and maintenance of Air curtain.
2.0 SCOPE:
Applicable to all the Air curtains installed in the unit.
3.0 RESPONSIBILITY:
Technicians/Engineers/Executives/Asst. Manager.
4.0 ACCOUNTABILITY:
Head of Engineering.
5.0 DEFINITION(S):
Nil.
PROCEDURE:
6.0
6.1.0 Monthly maintenance activities :
6.1.1 Disconnect the power supply and put under maintenance board on air curtain.
6.1.2 CLEANING PROCEDURE
6.1.2.1 Open the grills.
6.1.2.2 Clean the impeller with Vacuum followed by moist duster.
6.1.2.3 Lubricate the bush impeller.
6.1.2.4 Fix the grills.
6.1.3 Check the motor connections, earthing connections and dress the wires if required.
6.1.4 Take trial run, Check for any abnormal noise or vibrations, rectify if any.
6.1.5 Remove the under maintenance board.
6.1.6 Record the observation in the format for preventive maintenance of air curtain.
SOP : ENGN : 003 : F1
6.2 Six monthly maintenance activities :
6.2.1 Check the Air velocity at four places below louvers at different distance towards floor.
6.2.2 Standard Air velocity limits of Air curtain at different distance are given below.
Distance From Air Curtain Louver Face/ Standard Air Velocity
2 Ft/7-9 (m/s)
4 Ft/5-7 (m/s)
6 Ft/3-5 (m/s)
8 Ft/2-5 (m/s)
6.2.3 Maintain the record of Air velocity