|
各位 UL 987 30.3 关于运动部件护罩要求:
. a2 j5 {( _$ C* D# d1 e6 K30.3 Some guards provided over moving parts are required to be of the self-restoring type – for example,
& }! k" s4 n) W7 h& O6 X( Oa guard on a saw and a guard on a jointer. Other features of a guard that shall be considered include:
- z: L ~; p$ k# G" l4 Q& K( Wa) Removability of the guard without the use of a tool; | b) Removability for servicing and the need for replacement;0 ~% i. [: u* z9 _" c
c) Strength and rigidity;! z2 Q3 s- {" a) Z& h5 E1 ]
d) Completeness; and6 r% F9 {+ [. v; e' t" A' E
e) Creation of a risk of injury to persons, such as pinch points, material hang-ups or jams,
% t' i( ^0 h0 B& Grestricted vision, or other conditions adversely affecting the ease of operation; and the necessity4 y% V0 z" D" P! {6 h0 H& b
for additional handling because of increased need for servicing – such as cleaning, unjamming,9 k& a1 _8 v- Y" Y
and the like., P4 s& v+ ^$ t1 L1 J/ |7 ^! o
/ L( M" t: H, T+ _6 [) d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? |
|