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4.3.2 Handles and manual controls" d2 Z( }- a# d, \/ x
Handles, knobs, grips, levers and the like shall be reliably fixed so that they will not work loose1 j( Y. N# R8 i* _ F/ I
in normal use, if this might create a hazard. Sealing compounds and the like, other than% j5 B1 M& a9 I2 f8 ^ a
self-hardening resins, shall not be used to prevent loosening.
' d' {: u9 N- HIf handles, knobs and the like are used to indicate the position of switches or similar7 S' \% a8 z) a6 ]! |/ j+ {
components, it shall not be possible to fix them in a wrong position if this might create a hazard.0 q2 v" {1 p" m6 K/ ~* V, u
Compliance is checked by inspection, by manual test and by trying to remove the handle, knob,# j+ A& Z1 P2 y# n% C; _
grip or lever by applying for 1 min an axial force as follows.
, k9 c" {4 W# b! n! T1 Z5 Q8 UIf the shape of these parts is such that an axial pull is unlikely to be applied in normal use, the0 X/ s- K( x2 b; x; ]- W+ d
force is:' Q/ \+ P6 j! b, w3 u) ]+ b
– 15 N for the operating means of electrical components; and
q- y. \' z9 f– 20 N in other cases.
0 k R5 `# N5 g |$ R/ AIf the shape is such that an axial pull is likely to be applied, the force is:
) B3 Z4 ~- u+ x1 F& c& I* ~– 30 N for the operating means of electrical components; and
; G8 O1 r" ]2 O+ B( Z/ `– 50 N in other cases. |
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