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各位 UL 987 30.3 关于运动部件护罩要求:
) e' C5 l. t1 B G& r1 ?30.3 Some guards provided over moving parts are required to be of the self-restoring type – for example,9 ^( k* j$ W0 c# V: I" |0 e
a guard on a saw and a guard on a jointer. Other features of a guard that shall be considered include:) Q3 N2 j2 x6 |5 [. l1 V
a) Removability of the guard without the use of a tool; | b) Removability for servicing and the need for replacement;# j3 b/ B2 v% B( n5 D
c) Strength and rigidity;
+ o- }) l2 D, A( s; ?. b: f& ?d) Completeness; and, s+ h2 i' v& v1 q% @+ ]! V
e) Creation of a risk of injury to persons, such as pinch points, material hang-ups or jams,
& ]; T6 H2 |( d- _restricted vision, or other conditions adversely affecting the ease of operation; and the necessity$ R s! v5 i+ J6 e, O
for additional handling because of increased need for servicing – such as cleaning, unjamming,. C0 N7 _9 I4 Z& a* v
and the like.
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4 A5 ]8 k/ h/ s& E% `. h# S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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