DSH 109/06 Endurance and thermal tests on apliances for purifying water usig an

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DSH 109/06 $ J- z3 j0 O3 T- N* K : E" L! R* e" h# r

Endurance and thermal tests on apliances for purifying water usig an UV lamp . g4 j, l- L0 Y$ B

11-19 / 12

60335-1(ed.3) & 60335-1(ed.4) & 60598-1(ed.5) & EN 60335-1:1994 & EN 60335-1:2002 & EN 60598-1:2000

Standard: IEC 60335-1/1991
: X1 R: w4 H9 e& W5 oIEC 60335-1/2001
EN 60335-1/1994
: j- m1 T5 s, `8 ^. zEN 60335-1/2002
IEC 60598-1/1999
. k1 x7 p5 h7 O7 s+ g" i7 zEN 60598-1/2000
: C) ~3 Y* ^5 H- l3 A  z; LSub clause: 11 - 19 12
: C4 S6 H" a9 Y3 @; NSheet N°: 109/06
% f' ~' E1 w! G! @Subject: Endurance and thermal tests on appliances for purifying water using an UV lamp
Key words:
* c+ {7 p& r! q- Thermal tests
6 P$ G, D0 }+ B$ ]) s2 r* S, d- Abnormal conditions
- Temperature of water flowing
0 z( Y' n- ~" l/ r/ o4 ]Meeting: Decision confirmed at CTL 41st meeting
Question: The appliance for purifying water is equipped with an UV lamp (with its
8 D9 B) g0 G9 laccessories). The unit can be used with or without a constant water flowing (in
/ \( n/ T; |; {5 y' O. W! taccordance with the manual instructions). What should be the temperature of
8 z; V# U/ n. N2 k" Jthe water during the thermal tests?
Decision: The applicable standard is IEC/EN 60335-1. The thermal tests have to be
carried out according to clause 11 (heating) and clause 19 (abnormal
conditions) of IEC/EN 60335-1. If according to the manual instructions the
" W9 H/ `3 \6 @5 s, N: A: u! H- C8 Z" @appliance can be used without water flowing, we have to consider this situation
: h1 r- h# [% fas worst case: all tests have to be performed without water flowing. At the
beginning of the tests, the water shall be at room temperature (25°C). If the
6 @* r7 k# z) w) V0 qappliance is provided for use with water flowing only, the heating test (clause
3 m3 {. j; d6 v9 d; v11) shall be started with water at room temperature (25°C) but flowing. For the
. q6 \5 F9 f' i- @9 ^abnormal conditions test (clause 19), the water flowing has to be stopped
5 e# E0 r2 I! D' Q. `unless there is a monitoring circuit to switch off the appliance in case of water
flow interruption. At the beginning of the test the water shall be at room
# W$ ^. H6 A* F9 V6 h0 ]* etemperature (25°C).
; x$ w1 S4 _$ J* m2 y/ Q
+ o+ G" k  k  y5 {; U! A; s7 s
1 B  j" ~: K3 D6 `3 b$ ]0 {