Subject 541
Bulletin Dated: September 25, 2009
SUMMARY OF TOPICS
The following changes in requirements to the Standard for Refrigerated Vending Machines, UL 541, are being proposed:
1. Proposed Addition Of Paragraph 3.6.1 To Define The Term Motor Controller And Proposed Revision To Paragraph 22.1.2 To Delete The Description Of A Motor Controller
2. Proposed Revision To Paragraph 3.10 To Clarify The Definition Of A Vendor Or Refrigerated Vending Machine That Aligns With Recent Changes To The National Electrical Code
3. Proposed Revision To Paragraph 8.3.3.1 To Delete Reference To The Obsolete Cord Type Of "W-A"
4. Proposed Revision To Paragraphs 15.2.1, 53.1.5, 53.4.1, 63.6 And Proposed Deletion Of Paragraph 63.7 To Delete The Reference To HACR Type Circuit Breakers
5. Proposed Revisions To Section 21 And Proposed Addition Of Section 21A To Separate General Motor Requirements From Overload Protection Requirements, And Proposed Addition Of A New Requirement To Require That Protective Electronic Circuits Used In Motors Comply With UL 991, Tests For Safety-Related Controls Employing Solid-State Devices Or UL 60730-1A, Automatic Electrical Controls For Household And Similar Use, Part 1
6. Proposed Addition Of Paragraph 22.1.14 To Require That A Temperature Control For A Motor-Compressor Comply With Tests In UL 873, Temperature-Indicating And Regulating Equipment
7. Proposed Addition Of A New Paragraph 24.1 To Specify That An Electrically Operated Value Or Solenoid Shall Comply With UL 429, Electrically-Operated Valves
8. Proposed Revision To Paragraph 31.1 To Require That A Pressure-Limiting Device Comply With Tests In UL 873, Temperature-Indicating And Regulating Equipment
9. Proposed Revision To The Leakage Current Test Requirements In Paragraphs 34.1 And 34.6 To Provide An Option For Vending Machines To Comply With The Leakage Current Requirements In UL 101, Leakage Current For Appliances, And To Clarify Humidity Conditions For The Test
10. Proposed Revision To Paragraph 37.1 To Allow For The Use Of A Direct Potential To Test Vending Machines To The Dielectric Voltage-Withstand Test
11. Proposed Revisions To Paragraph 43.1 To Clarify The Compliance Criteria For The Stability Test
12. Proposed Revisions To Paragraph 55.2 To Specify That Refrigerant-Containing Components That Comply With UL 207, Refrigerant-Containing Components And Accessories, Nonelectrical May Be Used Without Additional Testing
13. Proposed Revision To Paragraph 62.1 To Clarify That Permanent Markings Shall Comply With Section 58 Of UL 541 Or With UL 969, Marking And Labeling Systems
14. Proposed Revision To Paragraph 61.2.1 To Allow The Production Line Dielectric Voltage Withstand Test To Be Conducted Pior To The Attachment Of The Power Supply Cord
15. Proposed Editorial Revisions To Address Use Of Consistent Terminology, Delete Dates Associated With Referenced Standards, Correct References, And Other Editorial Changes