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

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DSH 109/06

Endurance and thermal tests on apliances for purifying water usig an UV lamp ; _9 K* P. v4 m) q& E

11-19 / 12 0 s, Z. \  E  W! B

60335-1(ed.3) & 60335-1(ed.4) & 60598-1(ed.5) & EN 60335-1:1994 & EN 60335-1:2002 & EN 60598-1:2000 7 }, t; |9 h5 \) q2 Q

Standard: IEC 60335-1/1991
IEC 60335-1/2001
  k& A; `6 v- C, ~EN 60335-1/1994
EN 60335-1/2002
IEC 60598-1/1999
EN 60598-1/2000
Sub clause: 11 - 19 12
Sheet N°: 109/06
" I6 g! F* r5 y1 \" n+ h8 C  a# jSubject: Endurance and thermal tests on appliances for purifying water using an UV lamp
2 |. I( o# t) h5 Q- hKey words:
- Thermal tests
; N( l2 b9 v* h- t, F4 C0 z- k- Abnormal conditions
$ g& @3 w* K& M8 l# U( F- Temperature of water flowing
/ e8 p$ x2 n: H9 G- ^! K, o4 EMeeting: Decision confirmed at CTL 41st meeting
4 v# h/ b; V5 p  p: B" g$ FQuestion: 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
+ H  T' E! u) F- Y% @+ l- ~, Jthe water during the thermal tests?
- e' I- I0 Z9 O7 W0 iDecision: The applicable standard is IEC/EN 60335-1. The thermal tests have to be
" p% W0 J& |* i: Gcarried out according to clause 11 (heating) and clause 19 (abnormal
+ }. ?' p! _+ y; bconditions) 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
( |* T) D& ~9 `3 ]7 ^/ Yas worst case: all tests have to be performed without water flowing. At the
( x. [+ \- P* ?. J( [; Ibeginning of the tests, the water shall be at room temperature (25°C). If the
# w2 o" E! f/ Y+ \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
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
) W! {, S8 v- m: a; D5 s5 Ltemperature (25°C).

( N+ a* I6 W* j1 o8 t& L/ h! H