UL 207 BULLETINS-2004 非电气包含非电气制冷元件和附件用第7版标准的基本原理和提议要求、UL 207
RATIONALE AND PROPOSED REQUIREMENTS FOR THE SEVENTH EDITION OF THE
STANDARD FOR REFRIGERANT-CONTAINING COMPONENTS AND ACCESSORIES,
NONELECTRICAL, UL 207
This bulletin proposes the following:
1. Clarifying the discharge pressure requirement for pressure relief valves.
2. Revising the Rupture Member Test with respect to the nominal burst pressure.
3. Revising the Manufacturing and Production Tests section to clarify the necessary
production line leakage and hydrostatic strength tests on low side components.
4. Revising markings for clarification purposes.