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各位 UL 987 30.3 关于运动部件护罩要求:5 B! b- {$ ^1 E% J* L; H
30.3 Some guards provided over moving parts are required to be of the self-restoring type – for example,
0 e* ?8 x) J- _! O5 d' `7 _9 ma guard on a saw and a guard on a jointer. Other features of a guard that shall be considered include:& ?4 \. u; m& y1 t
a) Removability of the guard without the use of a tool; | b) Removability for servicing and the need for replacement;5 R$ \ \5 j" L5 D
c) Strength and rigidity;# [# F$ M! Z2 l4 b0 z
d) Completeness; and
2 c7 \% b3 j3 l# R* Ve) Creation of a risk of injury to persons, such as pinch points, material hang-ups or jams,9 F g2 ?9 @( _; A- }" A4 [
restricted vision, or other conditions adversely affecting the ease of operation; and the necessity
3 o) r5 p+ s# P$ gfor additional handling because of increased need for servicing – such as cleaning, unjamming,
& t `2 h3 n) G9 Dand the like.
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其中的a 怎么理解?不用工具就可以拆掉的运动部件护罩可以接受吗? |
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