• OBJECTIVE:

To describe a procedure for the preventive maintenance of Air Dryer

• SCOPE:

This SOP is applicable for preventive maintenance of Air Dryer

• RESPONSIBILITY:

Assistant Engineer/Above shall be responsible for implementation and compliance of the Standard Operating Procedure.

• ACCOUNTABILITY:

Manager – Engineering/Manager-Production/Head-QA shall be accountable for implementation and compliance of the SOP

• ATTACHMENT:

Preventive maintenance checklist of air dryer                                    Attachment-I

• PROCEDURE:
  • Preparation of preventive maintenance plan:
    • Inform the concern person before starting preventive maintenance.
    • Ensure that no activities are carried out in the respective machine.
    • Ensure that the respective system electrical supply is switched “OFF”
    • Before carrying out the preventive maintenance display status board as “UNDER PREVENTIVE MAINTENANCE” on the electrical panel and machine.
  • FREQUENCY: Quarterly

• CHECKLIST:
  • Check all electrical terminals of main supply and machine panel.
  • Check pre- line filters and clean them.
  • Check gas pressure of refrigeration unit at pressure guage. Make ensure that pressure gauge is working properly and calibrated.
  • Check leakage of  gas in condenser coils and pipes by using soap solution, if found rectify it.
  • Check working of solenoid valve for proper draining of condensed water.
  • Check exhaust fan and motor for proper working.
  • Check temperature controller for proper working.
  • Start and run the machine in Auto/Manual mode.
  • Check for any abnormal noise in the machine.
• After completion of the above procedure remove the “UNDER PREVENTIVE MAINTENANCE” status board from the machine and the respective electrical panel.
• Affix the Preventive Maintenance Status on machine as per Attachment– I of
• Update the status label of the machine after the completion of preventive maintenance.
• After performing the preventive maintenance activity of machine, respective area supervisor shall check and note the details on respective Equipment Sequential Log Book.

6.8       Junior Engineer/ above shall record the activity in respective attachment of SOP for Maintenance of

            Air Dryer

• REFERENCES :

      In-house

 ABBREVIATIONS:

SOP : Standard Operating Procedure

Engg.: Engineering

• DISTRIBUTION LIST:

Quality Assurance

Engineering

Production

10.0     HISTORY  OF REVISION:

Version No.	Effective Date	Reason for Revision

                                                                            Attachment-I

                                                        Preventive Maintenance Checklist  of Air Dryer

Area:

ID No:                                                                                                                                            Date:

Frequency:

Sr. No.	Particulars	Status
	Check all electrical terminals of main supply and machine panel.
	Check pre- line filters and clean them.
	Check gas pressure of refrigeration unit at pressure guage. Make ensure that pressure gauge is working properly and calibrated.
	Check leakage of  gas in condenser coils and pipes by using soap solution, if found rectify it.
	Check working of solenoid valve for proper draining of condensed water.
	Check exhaust fan and motor for proper working.
	Check temperature controller for proper working.
	Start and run the machine in Auto/Manual mode.
	Check for any abnormal noise in the machine.