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4.3.2 Handles and manual controls" B! O, x8 B3 n% d9 b
Handles, knobs, grips, levers and the like shall be reliably fixed so that they will not work loose6 o# d8 H% P6 b* J6 P9 y
in normal use, if this might create a hazard. Sealing compounds and the like, other than* E+ c* w1 N3 M5 n8 W- F
self-hardening resins, shall not be used to prevent loosening.* R6 e4 e2 X3 n0 B# y
If handles, knobs and the like are used to indicate the position of switches or similar
4 f+ K( p( i; C0 {components, it shall not be possible to fix them in a wrong position if this might create a hazard.
% w- |! h& o1 _ zCompliance is checked by inspection, by manual test and by trying to remove the handle, knob,0 p) {% d/ |" W- _
grip or lever by applying for 1 min an axial force as follows.! L+ |9 ^: I, v" W
If the shape of these parts is such that an axial pull is unlikely to be applied in normal use, the7 t1 S# M5 l# R7 [) x* v6 G3 b
force is:0 ~2 y* [( Q& e$ {
– 15 N for the operating means of electrical components; and
6 Q8 I$ W, _5 ^2 W/ z* q– 20 N in other cases.
0 ?% g6 k9 K* w4 B9 v1 P: PIf the shape is such that an axial pull is likely to be applied, the force is:
. ^, ]& F3 \# i– 30 N for the operating means of electrical components; and) w' z" ?5 y* w/ o7 d
– 50 N in other cases. |
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