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BS EN60335-1：2002 cl15.12 O6 l/ D" E! S1 t! e; o: G* l
For IPX4 appliances, the horizontal centre line of the appliance is aligned with the pivot axis
0 c* ^7 ?- e$ h1 N7 Z- x# V9 Lof the oscillating tube. However, for appliances normally used on the floor or table, the
& l% a( X' ~& j* v0 r9 [9 Zmovement is limited to two times 90° from the vertical for a period of 5 min, the support being
# ]9 t1 C& S% [# W, m5 Gplaced at the level of the pivot axis of the oscillating tube.
! q1 _: M! S1 `7 y; l; ~; YIf the instructions for wall-mounted appliances state that the appliance is to be placed close to
* w/ o9 }; N; z4 `7 a' I/ n: pthe floor level and specifies a distance, a board is placed under the appliance at that
5 |) ^6 e! H6 g: Mdistance. The dimensions of the board are 15 cm more than the horizontal projection of the/ s, J) J4 ?# w; }9 K [
appliance.- F: o6 `0 [, h& T. ^
Appliances normally fixed to a ceiling are mounted underneath a horizontal unperforated8 E2 K) w5 t' J: \# C1 p5 A
support that is constructed to prevent water spraying onto its top surface. The pivot axis of the
1 h+ m( k N; T$ Foscillating tube is located at the same level as the underside of the support and aligned" _) M1 j3 y8 P$ I5 [8 J0 O2 S' ]
centrally with the appliance. The spray is directed upwards.% N' P' J5 h ]
For IPX4 appliances, the movement of the tube is limited to two times 90º from the vertical for" K) c1 a. _0 c+ Y1 q' k
a period of 5 min.
/ F9 }. z. R8 g5 \/ q- N7 C! Q2 ~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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