sop for Preventive Maintenance of Chilling Plant

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4 years ago

sop for Preventive Maintenance of Chilling Plant

1.0 Objective
To lay down a procedure of Preventive Maintenance of Chilling Plant.
2.0 Scope
This Standard Operating Procedure is applicable for Preventive Maintenance of Chilling Plant to be followed at formulation plants
3.0 Responsibility
3.1 Officer / Executive Engineering shall be responsible for the execution of this procedure.
3.2 Engineering Manager shall be responsible for the implementation of this SOP.
3.3 Head QA/designee shall be responsible for compliance of this SOP.
4.0 Abbreviations and Definitions
SOP : Standard Operating Procedure etc
No : Number
QA : Quality assurance
Qty : Quantity
ER : Engineering
5.0 Procedure

5.1 Ensure that electrical supply is in off position in main panel and display “Under Maintenance” Board on the panel board.
5.2 Switch OFF the drive unit and inform all the concerned.
5.3 Engineering Officer / Executive Shall Perform Preventive Maintenance as per Check List Shown in Annexure-1& 2.
5.4 After the completion of preventive maintenance, check the machine for smooth Operation.
5.5 Remove “Under Maintenance” Board on the panel board after completion of the Maintenance.
5.6 The operator / technician who performs the job will enter his name / sign in “Done By” Column and responsible Engineer/ Officer will put sign in “Checked by “ column department head will review the record every month.
5.7 Quarterly Maintenance will include the jobs of monthly maintenance, half yearly Maintenance will include the jobs of Monthly and Quarterly Maintenance and Yearly maintenance will include the jobs of Monthly, and Quarterly.

5.8 Quarterly preventive maintenance is to be carried out as per the following check points:
5.8.1 Check the refrigerant lines with soap solution for any leakages.
5.8.2 Check the oil level of the helical screw compressor.
5.8.3 Check the feed line sight glass for proper level of refrigerant.
5.8.4 Check the all interlocks for proper operation. If any problems observed rectify as per the situation.
5.8.5 Check the tightness of all the terminals in electrical device in machine.
5.8.6 Check all valves for proper operation, if any leakages are observed change the gasket or replace with a new one.
5.8.7 Check all gaskets for any leakages, if any leakages are observed rectify the problem as per the situation.
5.8.8 Drain out the entire water from chilled water loop and replace with fresh water.
5.8.9 Check the proper earthing.

5.9 Half Yearly preventive maintenance is to be carried out as per the following check points:
5.9.1 Check all electrical connections (compressor control panel, all pump motors, fan motor) for any loose connections, burned contacts, signs of overheated wires etc.
5.9.2 Check the discharge temperature of the compressor from the log sheets, if require, de scales the evaporator and condenser unit tubes.
6.0 Forms and Records
6.1 Quarterly Preventive Maintenance Check list of Chilling Plant – Annexure-1
6.2 Half Yearly Preventive Maintenance Check list of Chilling Plant – Annexure-2
7.0 Distribution
7.1 Master copy – Documentation Cell (Quality Assurance)
7.2 Controlled copies – Engineering Department