Cold Room, Purpose:
Cold Room, The purpose of this SOP is to define the standard operation and maintenance procedure of Cold room in order to ensure its smooth & trouble-free operation.
Cold Room, Scope:
This Standard Operating Procedure applies to the Cold rooms which are located at General and Cephalosporin Block.
Definitions / Abbreviation:
[][]N/A.
Responsibilities:
[][]The roles and responsibilities are as follows:
Engineering (Validation) Department
[][]Preparing the SOP and revise it when necessary.
Engineering (Maintenance) Department
[][]To provide necessary support for smooth operation & maintenance of cold room.
[][]To ensure that the operators are responsible to carry out the operation and maintenance work and regular checking of the critical components and logbooks.
[][]To develop a list of spare parts based on the manufacturer’s recommendations and to forward the list to the Planning and Procurement department with a request to place order as required.
Operators
[][]To operate the cold room according to the SOP.
[][]To do the maintenance according to the check list and fill up the maintenance log book.
Head of Engineering
[][]To ensure that the operation and maintenance of air compressor are done properly.
[][]To approve any maintenance/plans related to the compressor.
Manager, Quality Assurance
[][]To ensure overall implementation of this SOP.
Procedure:
Precautions:
[][]All operation and maintenance work must be done safely in accordance with the requirements of the Plant Safety Statement and the safety notices around the plant. Specific attention must be paid to the following:
[][]Use personal protective equipment before doing any kind of maintenance.
[][]Persons switching on the machines shall take adequate precautions to ensure that there is no one checking or working on the control panel of the machine.
[][]Keep the door shut during operation.
System Description:
[][]The Cold room of both Cephalosporin and General Block has been manufactured by Frigair.
[][]The raw materials are stored in the room at a temperature of 2 – 8 ⁰C. There is a split type AC of capacity 5 ton to maintain the temperature.
[][]The indoor unit contains evaporator, blower etc.
[][] The outdoor unit contains compressor, condenser, oil separator, filter dryer etc. There is a data logger to monitor the temperature of cold room for 24 hrs.
Operating Procedure:
Starting of Cold room:
[][]Switch ON the main switch. The Yellow and blue indicator will be ON.
[][]Then switch ON the blower by turning the switch to ON position. The blue indicator light will be ON.
[][]After 5 minutes compressor will be ON automatically. The BLUE indicating light will be ON.
[][]To set the required lower temperature, press the SET button. Then press up and down arrow button to set the required temperature.
[][] The temperature band is programmed as 5.5⁰C i.e if the lower temperature is set at 2.5 ⁰C, the higher temperature will be automatically set at 8.0⁰C.
During Operation:
[][]During operation check for any alarm. If the compressor and blower trip then the trip light will be ON and buzzer will give alarm.
[][]If the temperature of cold room becomes very much lower, the CC Heater will be ON and compressor will be OFF.
[][]In that case, the CC heater indicating light will be ON.
[][]In case of icing, the compressor, blower will be OFF and CC heater will be ON. The Defrost indicating light will be ON.
[][]Check the temperature in the display of monitor.
[][]Check the data logger. Change the page once a week because one page is used for a week.
Stopping procedure:
[][]Switch off the compressor by turning the switch to OFF position. The indicating light will be OFF.
[][]Then switch off the blower by turning the switch to OFF position. The indicating light will be OFF.
[][]Switch off the main switch. The Yellow and Blue indicating light will be OFF.
Maintenance Interval/ Maintenance action to be taken
Daily Maintenance
>>Check for any alarm.
>>Check whether all the equipments operate sequentially.
Weekly Maintenance
>>Clean the outdoor unit.
>>Clean the blower.
>>Clean the drain pan of indoor unit.
Monthly Maintenance
>>Check the refrigerant pressure.
>>The pressure should be 50 – 60 psi.
>>If the gas pressure is lower, recharge with new refrigerant.
Annexure:
Annexure I Equipment Use Log Book
Annexure – II: Maintenance log book of Cold room