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各位 UL 987 30.3 关于运动部件护罩要求:, a7 V4 h1 ]+ A- e) _
30.3 Some guards provided over moving parts are required to be of the self-restoring type – for example,' b( e {' i8 F. L) p" ]. a' g
a guard on a saw and a guard on a jointer. Other features of a guard that shall be considered include:
% Z( f: o5 N4 H8 H( L4 ha) Removability of the guard without the use of a tool; | b) Removability for servicing and the need for replacement;
% n# g1 _6 T+ P$ i7 ?% [0 E- `c) Strength and rigidity;
; I U- Z3 ]) a' hd) Completeness; and
, \9 Z" ^7 R: G8 W7 A he) Creation of a risk of injury to persons, such as pinch points, material hang-ups or jams,
5 k& n+ t9 ?. e N- q7 M' Grestricted vision, or other conditions adversely affecting the ease of operation; and the necessity
T- O, A7 B" T. q/ r9 G0 vfor additional handling because of increased need for servicing – such as cleaning, unjamming,1 i& @) z; n2 b7 @: q) ^4 `
and the like.1 i. @* N& j9 {+ x
7 X, J, U" X# v, G# F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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