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各位 UL 987 30.3 关于运动部件护罩要求:
3 y7 x( @- y5 b30.3 Some guards provided over moving parts are required to be of the self-restoring type – for example,
" W) z3 [/ {6 ^0 va guard on a saw and a guard on a jointer. Other features of a guard that shall be considered include:* t+ [2 k' _2 t1 C5 H
a) Removability of the guard without the use of a tool; | b) Removability for servicing and the need for replacement;
% e6 l" U% [6 T) r% W5 u3 E" fc) Strength and rigidity;( R6 `( h& m# o$ C) k- K3 I* c
d) Completeness; and
( n1 j6 |2 ~& B! Y: _6 I/ H) }, S$ m0 se) Creation of a risk of injury to persons, such as pinch points, material hang-ups or jams,$ i, b; }+ J; ~: Y# L0 ~. K- V6 h! K
restricted vision, or other conditions adversely affecting the ease of operation; and the necessity
: O' r n) P' g* z: Gfor additional handling because of increased need for servicing – such as cleaning, unjamming,3 F4 C1 h. l+ p9 k* I
and the like.7 N. _: C/ Q% v) o' W' V
5 b& m1 g' F3 ^: S( I T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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