This standard outlines the construction specifications and procedures for assessing the performance and capacity of freezers. Additionally, it delineates type tests for evaluating performance. It is applicable to freezers with storage capacities ranging from 50 to 1000 liters.

As per this standard, freezers must maintain an average internal cabinet air temperature of 10 degrees Celsius or lower when the ambient temperature is 43 degrees Celsius or higher.

According to this standard, freezers need to sustain an average internal cabinet air temperature of 10 degrees Celsius or lower when the surrounding ambient temperature reaches 43 degrees Celsius.

The freezer and its parts must possess sufficient strength and stability to endure regular handling, transportation, and usage scenarios. In instances where an interior light is fitted, the lamp should be adequately shielded from mechanical harm while remaining easily accessible without excessive disassembly.

When utilized in railway coaches or motor vehicles, the freezer and all its elements, such as piping and pipe connections, should be engineered to endure significant vibration and shock loads. Materials utilized in constructing the cabinet must adhere to relevant Indian standards unless specifically adjusted by this standard. Furthermore, they must be devoid of defects that could lead to unwarranted degradation or malfunction.

TESTS

The subsequent test must be conducted for Freezers.

1. Type Tests

2. Production routine tests

3. Acceptance tests

1. Type Tests

• Door seal test

• Test for the mechanical strength of self and similar components

• Thermal insulation test

• Pressure test

• High volume test

• Insulation resistance test

• Performance test

• Product load test

2. Production routine tests

• Thermostat test

• Insulation resistance test

• Door seal test

• High voltage test

3. Acceptance tests

Manufacturers are required to furnish a type test certificate along with each freezer, affirming that the freezer was produced in accordance with the type tested by the testing authority and that it adheres to the standards outlined in this standard.

Every freezer should bear permanent and clear markings as outlined in the standard, placed in one or more visible spots. ISI certification marks may also be included on freezers. Manufacturers are obligated to acquire a BIS license from the Bureau of Indian Standards to utilize the standard mark (ISI Mark). This license is granted subsequent to a thorough evaluation of manufacturing infrastructure, quality control, testing capabilities, and production processes conducted during an inspection of the manufacturing premises.

PROCESS FOR BIS ISI MARK CERTIFICATION