Mantainace of Hot and Cold Room / Chillers and fridges for supermarkets

Qualifications Pack – Cold Storage Technician /
SUB-SECTOR: FRUITS AND VEGETABLES, DAIRY PRODUCTS, MEAT AND ,POULTRY,FISH AND SEAFOOD

Brief Job Description: A Cold Storage Technician is responsible for handling installation of refrigeration system and components, refrigerant charging and storage of food in the cold storage room by maintaining storage parameters such as temperature and relative humidity in food processing units.

Personal Attributes: A Cold Storage Technician must have the ability to plan, organize, prioritize, calculate and handle pressure. The individual must have a mechanical aptitude and must possess reading, writing and communication skills. In addition, the individual must have stamina and professionalism.

Qulaification : Preferably Class 12/ Diploma /ITI with certification in refrigeration

Training : Installation of refrigeration unit
Maintenance of refrigeration equipments and components
Designing and construction of cold storage facility
Various refrigeration techniques
GMP
HACCP
QMS
Computer basics and ERP
Training in Food Safety Standards and Regulations (as per FSSAI) (Mandatory) ( Food Safety and Standards Authority of India )
Prepare and maintain work area and refrigeration equipments
Handle cold storage facility for storing food
interpret technical drawings, inspect the location for setting up refrigeration unit, install condensing unit, mount evaporation coil evaporator
install piping following industry refrigeration guidelines and applicable codes to ensure proper operation of the refrigeration system, check all wiring connections

calculate the number of temperature sensors required for the cold storage facility, identify location to place the sensors and place in relevant locations within the cold storage facility to obtain precise reading
harge refrigerant from supply tank to compressor determining charging level through weight and sight glass indication
perform pre-start up checks by verifying sufficient refrigerant is charged, electrical connections are tight, wiring and piping are properly routed and secured, compressor mounting bolts are proper, fan motors and mounting brackets are tight, condensing unit base and evaporator coil are properly secured
start the refrigeration system and check the compressor discharge and suction pressures to ensure they are in the normal operating range, check the liquid line sight glass for proper refrigerant charge, monitor the compressor oil level and add oil if necessary to maintain required level
check the voltage and amperage at the compressor terminals, check the piping and electrical connections for vibration
heck fans on the evaporator coil and condensing unit (for air-cooled condenser) to ensure they are operational and turning in the correct direction, check cooling tower (for water-cooled condenser), ensure there is no refrigerant leakage
set the defrost control/timer clock to required time and verify the defrost initiation settings, set temperature control to desired temperature range
check the functioning and performance of sensors and temperature measuring device
calibrate temperature and humidity measuring instruments of the storage
facility
receive food for storage, check the quality of product to be stored in cold storage facility through physical parameters, check the packaging of the product
Maintenance of refrigeration system and components
refrigeration principles, techniques and practices
interpreting drawings and diagrams of cold storage system and facility
components of refrigeration system and their installation
types of refrigerants and the procedure to handle them
methods to calibrate the testing equipments and equipments in the storage facility
types of food that can be stored in cold storage and their storage parameters
control parameters and parameter range for cold storage of various types of food
methods to control temperature and humidity in cold storage facility
methods and procedure to monitor the storage process
Performs leak tests when required. Uses oil-dry nitrogen to fill the chiller to the manufacturer’s specification, drains condenser and evaporator shells, calibrates ,pressure gauges, and records the pressure level.
Locates leaks using the bubble test. Applies liquid detergent to seals, gaskets, fitting connections, and motor terminals. Alternatively, pressurizes with oil-dry nitrogen and 5% tracer gas and locates leak sites using a halogen vapor detector.