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

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DSH 109/06   U) J- v( f6 e* j' ?

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

11-19 / 12 - |1 S% z6 k! v- T0 x9 }0 _) o, m% p2 F

60335-1(ed.3) & 60335-1(ed.4) & 60598-1(ed.5) & EN 60335-1:1994 & EN 60335-1:2002 & EN 60598-1:2000 ( K1 d: Y; u: A+ ?+ X

0 Y. {8 D4 c4 Q, u; |Standard: IEC 60335-1/1991
" T! N  k5 h2 v5 ]. ZIEC 60335-1/2001
; q, r3 L$ L! A) L: [4 r6 T" O. GEN 60335-1/1994
EN 60335-1/2002
IEC 60598-1/1999
- ]- B% {6 T9 E, j; {0 s  mEN 60598-1/2000
Sub clause: 11 - 19 12
Sheet N°: 109/06
) ^% \: ~& c4 c3 rSubject: Endurance and thermal tests on appliances for purifying water using an UV lamp
Key words:
- Thermal tests
- Abnormal conditions
, o) g* Z8 j2 j' @6 V- 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
accessories). The unit can be used with or without a constant water flowing (in
# s6 \6 P$ j! k4 F% c; F/ oaccordance with the manual instructions). What should be the temperature of
the water during the thermal tests?
+ T- [4 b. y# W5 L+ V6 jDecision: 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
- a$ ^' T% [7 b$ w8 O4 Zconditions) 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
2 h$ l! c+ W2 M9 e# kbeginning of the tests, the water shall be at room temperature (25°C). If the
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
  S5 \+ L: Z& J" ?: \7 u6 Sunless there is a monitoring circuit to switch off the appliance in case of water
7 I5 D( v2 m" m7 Iflow interruption. At the beginning of the test the water shall be at room
5 ~5 `! A& d) S, ?9 E; i" ptemperature (25°C).

8 F7 S- {+ K- g. p! x" P$ J" A/ D4 I9 c