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

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DSH 109/06 ! e( a( l/ [0 G" T! E# s$ M ' Z' p; e) A" H1 \" c. v7 a; V% j

Endurance and thermal tests on apliances for purifying water usig an UV lamp - F4 Q$ Z- t+ ^

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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
IEC 60335-1/2001
3 b' Z" [/ Y, x& PEN 60335-1/1994
4 d3 e2 k- c5 d0 s7 @  qEN 60335-1/2002
IEC 60598-1/1999
EN 60598-1/2000
Sub clause: 11 - 19 12
Sheet N°: 109/06
: Q% {5 t1 G5 }5 r# u! xSubject: Endurance and thermal tests on appliances for purifying water using an UV lamp
) O7 F& W3 _) j( R1 PKey words:
- Thermal tests
- Abnormal conditions
- Temperature of water flowing
$ l% @" d. Y" ]* c" d% d& SMeeting: Decision confirmed at CTL 41st meeting
9 a/ V( K2 @2 Y% qQuestion: The appliance for purifying water is equipped with an UV lamp (with its
- v% [7 |; H" g0 Iaccessories). The unit can be used with or without a constant water flowing (in
/ V8 I1 Q) p$ M" E- iaccordance with the manual instructions). What should be the temperature of
the 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
  ^8 Z, d# y$ D9 G% J3 Wappliance can be used without water flowing, we have to consider this situation
" z+ f. D+ e' eas 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
8 d3 t& V7 y2 j$ y' N  Z( O2 Dappliance 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
; W! }& K8 k+ i) A, o) G1 wabnormal 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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