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BS EN60335-1:2002 cl15.1
. [% [+ u4 G+ K6 L& ?) |) R! y QFor IPX4 appliances, the horizontal centre line of the appliance is aligned with the pivot axis8 x+ }. R) B! a
of the oscillating tube. However, for appliances normally used on the floor or table, the4 F% c9 B2 K0 c$ X6 ], T
movement is limited to two times 90° from the vertical for a period of 5 min, the support being$ R+ v) o' ]: R, b& U
placed at the level of the pivot axis of the oscillating tube.
. V$ I" [ ]6 S! i: F2 t& [If the instructions for wall-mounted appliances state that the appliance is to be placed close to
0 t- @. f6 h0 h8 ~the floor level and specifies a distance, a board is placed under the appliance at that3 K" J0 l( F5 H, H( q
distance. The dimensions of the board are 15 cm more than the horizontal projection of the" ]$ R: {1 H( h$ T& ]
appliance.7 g3 {# o" v- U8 {% p
Appliances normally fixed to a ceiling are mounted underneath a horizontal unperforated
. `9 Z) s+ j9 L! V7 Z. ~support that is constructed to prevent water spraying onto its top surface. The pivot axis of the
$ ], |) E9 c# e/ Y' E) h: n( q0 koscillating tube is located at the same level as the underside of the support and aligned
. ]6 j" P) e& @2 t C7 Q9 Ycentrally with the appliance. The spray is directed upwards.0 x$ g5 ^' S4 a$ f
For IPX4 appliances, the movement of the tube is limited to two times 90º from the vertical for$ J6 {3 Q9 Q# _/ K' [1 k
a period of 5 min.
/ D1 [. X* k5 c$ ^' r; w( v# v标准写的很清楚角度应该是左右各90度。那个正负180是指的一个周期 |
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