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各位 UL 987 30.3 关于运动部件护罩要求:
: h/ G+ H- G1 }/ {, v$ {30.3 Some guards provided over moving parts are required to be of the self-restoring type – for example,& s7 [8 f! n) Y, t0 \. o% j
a guard on a saw and a guard on a jointer. Other features of a guard that shall be considered include:, ]! k: z. s9 f+ b2 S4 K, r
a) Removability of the guard without the use of a tool; | b) Removability for servicing and the need for replacement;7 U5 V+ x+ N" _1 [ Z. x
c) Strength and rigidity;
" F% X: C5 F' h4 Pd) Completeness; and% G6 j. H$ n, X+ n$ ?
e) Creation of a risk of injury to persons, such as pinch points, material hang-ups or jams,
K- Y1 E" u2 E& R4 B5 zrestricted vision, or other conditions adversely affecting the ease of operation; and the necessity& e4 ]2 _; j& O0 c. x
for additional handling because of increased need for servicing – such as cleaning, unjamming,' D7 A& |! J9 P( l$ b. Z* @
and the like.
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3 B% |' l; u9 G' M, ?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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