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Standard 621, Edition 7

Standard for Ice Cream Makers

UL Red Line
Standard 621, Edition 7 Edition Date: December 11, 2015
Summary of Topics s0621_7_sum.html

SUMMARY OF TOPICS

The following revisions to ANSI/UL 621 have been made:

1. Revisions for general requirements regarding components

2. Revisions for specific requirements regarding components

3. Revisions for requirements regarding refrigerant tubing

4. Revisions to incorporate operating control, protective control parameter, and safety critical function requirements

5. Revisions for motor and motor overload protection requirements

6. Miscellaneous revisions including updated standard references, thermal equilibrium requirements, clarification of Table 31.2, and removal of R-22 references

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