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各位 UL 987 30.3 关于运动部件护罩要求:7 }) P& l% r4 @& U0 \' Z
30.3 Some guards provided over moving parts are required to be of the self-restoring type – for example,$ b8 w6 `& D1 e
a guard on a saw and a guard on a jointer. Other features of a guard that shall be considered include:7 U' G8 D: o% C8 p2 p: _6 s( Q
a) Removability of the guard without the use of a tool; | b) Removability for servicing and the need for replacement;0 y( o) A9 y# J* |9 {8 ^8 g/ _
c) Strength and rigidity;5 C4 K' Y* ]( C. |1 H `& b* m
d) Completeness; and
7 l2 {( U* k7 r1 \% z: O3 u, pe) Creation of a risk of injury to persons, such as pinch points, material hang-ups or jams,
, n x' v+ h' d4 |8 hrestricted vision, or other conditions adversely affecting the ease of operation; and the necessity
7 a2 S9 o+ w$ W8 G% W9 I0 Qfor additional handling because of increased need for servicing – such as cleaning, unjamming,
) W. ]' e( ~2 N; Y; y6 ] `and the like." e/ E, I1 ?) {9 n+ Z9 W2 @3 t
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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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