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

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DSH 109/06 3 z! R3 W- N/ g$ O6 [$ V6 o, ?

Endurance and thermal tests on apliances for purifying water usig an UV lamp # f9 n: I% b( k% t; k

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 4 Z0 Z* R8 x7 h1 T( {. n4 }

* m2 E: T* J2 J4 JStandard: IEC 60335-1/1991
" u' m; {/ m1 h7 h" Z& KIEC 60335-1/2001
EN 60335-1/1994
EN 60335-1/2002
0 _! r0 g) }4 T3 T) q/ K  s) AIEC 60598-1/1999
* e; a" U6 k" Q2 l* D* YEN 60598-1/2000
Sub clause: 11 - 19 12
# Z1 Q6 u2 N; I3 l% ^Sheet N°: 109/06
Subject: Endurance and thermal tests on appliances for purifying water using an UV lamp
Key words:
- Thermal tests
- Abnormal conditions
7 O5 u9 [" [6 p9 @# ?& h( F- Temperature of water flowing
" o! M( C* h+ h- q. l1 NMeeting: Decision confirmed at CTL 41st meeting
, H; T( {8 b: t0 SQuestion: The appliance for purifying water is equipped with an UV lamp (with its
accessories). The unit can be used with or without a constant water flowing (in
accordance with the manual instructions). What should be the temperature of
the water during the thermal tests?
9 ^9 m) r, v) f- h$ C+ c( W% hDecision: 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
' S* V, w$ ~$ ]conditions) of IEC/EN 60335-1. If according to the manual instructions the
appliance can be used without water flowing, we have to consider this situation
as worst case: all tests have to be performed without water flowing. At the
$ k" V% }% P6 ^! b( nbeginning of the tests, the water shall be at room temperature (25°C). If the
8 K5 O+ s; B# l; N! x2 ^appliance is provided for use with water flowing only, the heating test (clause
11) shall be started with water at room temperature (25°C) but flowing. For the
9 A, D! i# T: [6 c" i9 N  }$ x; ]abnormal conditions test (clause 19), the water flowing has to be stopped
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
temperature (25°C).

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