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4.3.2 Handles and manual controls
2 k# J; H- F# q/ L1 ~+ t6 i5 H! b; YHandles, knobs, grips, levers and the like shall be reliably fixed so that they will not work loose
+ ?+ Y9 O$ E; P, S: S5 U' F. T' }" Jin normal use, if this might create a hazard. Sealing compounds and the like, other than. o% S& G, k8 c6 D' q, r A
self-hardening resins, shall not be used to prevent loosening.
0 ^0 j9 E7 c2 p% l& vIf handles, knobs and the like are used to indicate the position of switches or similar
* D6 r. m! y$ K' Y( C$ k" Dcomponents, it shall not be possible to fix them in a wrong position if this might create a hazard.
% E; [9 v. |- pCompliance is checked by inspection, by manual test and by trying to remove the handle, knob,/ E. X) C/ o) p% l
grip or lever by applying for 1 min an axial force as follows.0 D1 O% ~, |! N/ A" A
If the shape of these parts is such that an axial pull is unlikely to be applied in normal use, the
& Z6 R9 h N/ y) }: q$ lforce is:. w- Y% @7 J* j* j2 }
– 15 N for the operating means of electrical components; and
5 K+ k: z# I$ X' x' d& i, }) ?; T– 20 N in other cases.
; l0 @) ~9 n4 I2 E( u; G1 gIf the shape is such that an axial pull is likely to be applied, the force is:
# B+ h* @) d0 l0 `4 J' D/ M– 30 N for the operating means of electrical components; and& u* n/ ]) P5 T( d: L. n* i
– 50 N in other cases. |
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