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4.3.2 Handles and manual controls0 L7 z! L* d" Q. d1 ?
Handles, knobs, grips, levers and the like shall be reliably fixed so that they will not work loose; g3 Q. s; r* W# K' M
in normal use, if this might create a hazard. Sealing compounds and the like, other than# K8 y; T K4 n7 W3 Q5 ?
self-hardening resins, shall not be used to prevent loosening.1 B/ x- m4 q H, B: P
If handles, knobs and the like are used to indicate the position of switches or similar( m: I0 F* R. L9 C
components, it shall not be possible to fix them in a wrong position if this might create a hazard.
( I0 g' G# _2 c& u2 hCompliance is checked by inspection, by manual test and by trying to remove the handle, knob,7 H: U" k8 L: i9 ]
grip or lever by applying for 1 min an axial force as follows." z% [9 t$ p( B* k1 ]' r% N! i# H
If the shape of these parts is such that an axial pull is unlikely to be applied in normal use, the3 o! q/ j- _4 u9 u: T
force is:1 ]4 z f& V# m5 u6 ^7 D6 `; h6 ?4 E# K/ b
– 15 N for the operating means of electrical components; and+ z5 i! I& K2 K( o4 B# C/ R1 D! t
– 20 N in other cases.
1 L+ C- `; y- ^" g* h8 K7 _If the shape is such that an axial pull is likely to be applied, the force is:" `: f2 n6 q- _& K% H* J
– 30 N for the operating means of electrical components; and( V0 E$ r9 h# v7 P
– 50 N in other cases. |
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