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4.3.2 Handles and manual controls
" b2 e' p( x. b5 ]3 y! T4 hHandles, knobs, grips, levers and the like shall be reliably fixed so that they will not work loose
6 Y, G* M* V v4 ^+ _: s. K* f0 R0 Lin normal use, if this might create a hazard. Sealing compounds and the like, other than8 [' u a' x* C$ B/ @) Y7 v7 p9 N
self-hardening resins, shall not be used to prevent loosening.
' N! ~/ s! ?+ `1 j2 D( V3 oIf handles, knobs and the like are used to indicate the position of switches or similar) n- E! y" \- u3 x8 q4 U/ b
components, it shall not be possible to fix them in a wrong position if this might create a hazard.$ F( U" _5 {0 Z
Compliance is checked by inspection, by manual test and by trying to remove the handle, knob, l" B4 h7 n( z8 O, u5 Q
grip or lever by applying for 1 min an axial force as follows.
: J: {+ L3 M( n2 ]1 X& m' X! EIf the shape of these parts is such that an axial pull is unlikely to be applied in normal use, the* ~: @' v: A: W3 w
force is:
( H/ ~. g9 Q, W% |– 15 N for the operating means of electrical components; and8 ~5 o$ f' \8 f# w+ m% r
– 20 N in other cases.& s( E j. x3 g9 R
If the shape is such that an axial pull is likely to be applied, the force is:0 k6 H* [# V! ?
– 30 N for the operating means of electrical components; and( c' T- b: q2 c8 C1 J4 {. l
– 50 N in other cases. |
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