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4.3.2 Handles and manual controls: ` e! w7 ^4 H: `2 m
Handles, knobs, grips, levers and the like shall be reliably fixed so that they will not work loose
N8 p Z! s$ Cin normal use, if this might create a hazard. Sealing compounds and the like, other than; s2 y. {7 [# h: F+ I. T4 l+ e
self-hardening resins, shall not be used to prevent loosening.6 S/ |7 y" `* ?$ C2 u1 ~& w( V `( r
If handles, knobs and the like are used to indicate the position of switches or similar, {9 K" Y9 U% E$ G7 y9 ~. {
components, it shall not be possible to fix them in a wrong position if this might create a hazard.
' I$ P2 V! V4 K2 N8 YCompliance is checked by inspection, by manual test and by trying to remove the handle, knob,
. C# u3 F5 }$ c) z% qgrip or lever by applying for 1 min an axial force as follows.
% ]2 l, M" p$ @2 Y [If the shape of these parts is such that an axial pull is unlikely to be applied in normal use, the% q6 l7 S i* W; h2 A, B3 {- I
force is:7 h) N) R3 u* T9 |8 B
– 15 N for the operating means of electrical components; and
( _, B9 c2 I. {$ v3 j– 20 N in other cases.9 @, C5 |1 p( g% H; c4 p
If the shape is such that an axial pull is likely to be applied, the force is:2 l3 j3 B! X- M R
– 30 N for the operating means of electrical components; and5 H% t& I2 v! ]5 o& ]5 g7 V- J1 T/ u# @
– 50 N in other cases. |
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