|
BS EN60335-1:2002 cl15.1' d8 c) P9 F, K. W3 h
For IPX4 appliances, the horizontal centre line of the appliance is aligned with the pivot axis
# b& }" F6 G0 s% v% Tof the oscillating tube. However, for appliances normally used on the floor or table, the
( p3 b! N9 e8 _: L$ p& y9 \movement is limited to two times 90° from the vertical for a period of 5 min, the support being& ?; T/ z A$ A% ]
placed at the level of the pivot axis of the oscillating tube.
8 I% |0 J# b( d7 _If the instructions for wall-mounted appliances state that the appliance is to be placed close to
" }/ I9 L5 m$ Q0 b5 Athe floor level and specifies a distance, a board is placed under the appliance at that- |7 W4 T: V: j2 c" |4 n
distance. The dimensions of the board are 15 cm more than the horizontal projection of the
; f; d5 S' U; s. d2 J) lappliance.6 Y3 W9 R! t0 [7 m! P0 Y4 c& N6 U8 p
Appliances normally fixed to a ceiling are mounted underneath a horizontal unperforated4 }9 s6 B3 `9 d6 B \5 u
support that is constructed to prevent water spraying onto its top surface. The pivot axis of the3 _+ x4 G% j0 C( n5 G. M, j) [2 a
oscillating tube is located at the same level as the underside of the support and aligned
* F$ k; g9 ]0 ~% g3 ncentrally with the appliance. The spray is directed upwards.
5 J: n+ r0 x* ^; C2 DFor IPX4 appliances, the movement of the tube is limited to two times 90º from the vertical for
$ W; H5 ]$ j6 w1 ?6 T+ X0 ta period of 5 min.6 v6 ?8 W7 K) R3 W( K% {) h4 [# Y
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 |
|