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4.3.2 Handles and manual controls# ` y2 ?) W( O
Handles, knobs, grips, levers and the like shall be reliably fixed so that they will not work loose" D9 @+ a& Y4 b" }2 w4 v3 \
in normal use, if this might create a hazard. Sealing compounds and the like, other than& y+ z) p# ^+ D( W* I, c
self-hardening resins, shall not be used to prevent loosening.# A) u4 u2 M- x6 k, O8 l
If handles, knobs and the like are used to indicate the position of switches or similar/ ]/ u/ M" A6 k3 `1 m% T" P
components, it shall not be possible to fix them in a wrong position if this might create a hazard.
( y h" L, j/ s* hCompliance is checked by inspection, by manual test and by trying to remove the handle, knob,- U% ^% E7 ]5 Y$ |! U$ w/ A) P7 @
grip or lever by applying for 1 min an axial force as follows.( X/ B. Z# @, o0 n% S* r9 t$ b0 P x
If the shape of these parts is such that an axial pull is unlikely to be applied in normal use, the
/ C" m3 y* ]% O# M2 z r4 M5 mforce is:
* ?. F8 ]& M2 G9 M5 [9 G, m8 k– 15 N for the operating means of electrical components; and9 o! b$ V/ b/ o+ `/ R
– 20 N in other cases.
! C: N( P. K0 |& j1 N5 pIf the shape is such that an axial pull is likely to be applied, the force is:
9 @8 [# [( b6 E$ x1 [' E. r– 30 N for the operating means of electrical components; and
. s: p( c7 i& d) X3 O– 50 N in other cases. |
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