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

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DSH 109/06 . m4 F1 a' U( y; T& N2 n  P& q% B

Endurance and thermal tests on apliances for purifying water usig an UV lamp

11-19 / 12 " U7 p$ m- H9 V% Q; N& L

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

9 `) I5 n1 {  UStandard: IEC 60335-1/1991
IEC 60335-1/2001
: O  ?/ e3 H1 F0 kEN 60335-1/1994
EN 60335-1/2002
5 {) i2 Z  y0 ~& m/ |IEC 60598-1/1999
/ q8 K4 F* P" R1 @! A/ AEN 60598-1/2000
Sub clause: 11 - 19 12
- F6 y$ ?' E4 Z) C+ B# [4 A0 hSheet N°: 109/06
Subject: Endurance and thermal tests on appliances for purifying water using an UV lamp
Key words:
& K4 Q3 ~8 R( R$ h- Thermal tests
- Abnormal conditions
; \# a1 @6 {) J7 P* H2 Y& g# ~6 [- Temperature of water flowing
Meeting: Decision confirmed at CTL 41st meeting
Question: The appliance for purifying water is equipped with an UV lamp (with its
9 m! P* l1 T4 ?+ Eaccessories). 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?
( d% l2 g* U2 N8 z' [  ]% PDecision: The applicable standard is IEC/EN 60335-1. The thermal tests have to be
! P# W: c% q) \& |. j' z* U6 Icarried out according to clause 11 (heating) and clause 19 (abnormal
7 }; K1 d/ `" ~* mconditions) of IEC/EN 60335-1. If according to the manual instructions the
( y. `& e3 W) k: s+ ?appliance can be used without water flowing, we have to consider this situation
2 e% G. J( ~+ }3 _as worst case: all tests have to be performed without water flowing. At the
, J. R( V$ U9 [1 i9 }beginning of the tests, the water shall be at room temperature (25°C). If the
$ N! D$ q# y& E' x; I' W3 d8 Tappliance is provided for use with water flowing only, the heating test (clause
, f. V. E- Z& f) t3 D+ t11) shall be started with water at room temperature (25°C) but flowing. For the
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
- T& B% V0 f9 [( b. e. Mtemperature (25°C).
* F9 ?! k) I) [0 l( G# X! h

7 l2 [2 M" K/ E+ W+ e$ `! W2 c+ B