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BS EN60335-1:2002 cl15.1
2 E2 y( l; E# _+ h: S, i% uFor IPX4 appliances, the horizontal centre line of the appliance is aligned with the pivot axis1 {$ k2 z) n# D% z# V4 _- i
of the oscillating tube. However, for appliances normally used on the floor or table, the" q& i+ y2 G6 q& Z2 K
movement is limited to two times 90° from the vertical for a period of 5 min, the support being6 w! b; e" C& B. Z6 J
placed at the level of the pivot axis of the oscillating tube.1 ?) t7 S, L2 p1 ?
If the instructions for wall-mounted appliances state that the appliance is to be placed close to
& a0 f/ n* i, d- c# {the floor level and specifies a distance, a board is placed under the appliance at that
/ I2 I6 Y" \1 A& j* g, K1 I( |distance. The dimensions of the board are 15 cm more than the horizontal projection of the0 Z9 F8 A9 V# h! ]6 A* K% S9 G
appliance.& f S2 e; E" P1 ]
Appliances normally fixed to a ceiling are mounted underneath a horizontal unperforated8 F. {. L* S4 r8 b t* r
support that is constructed to prevent water spraying onto its top surface. The pivot axis of the& o3 a( C; Z6 v
oscillating tube is located at the same level as the underside of the support and aligned
3 K/ R' _0 P! y% Qcentrally with the appliance. The spray is directed upwards.
: E9 {" a! O; w; rFor IPX4 appliances, the movement of the tube is limited to two times 90º from the vertical for/ n# `1 Z4 h4 e4 k1 p) w
a period of 5 min.
* i0 w% c4 n# O$ }2 V2 J2 H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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