请教对60335-2-54章节22.7的理解

kuiyin01

广东安规检测
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如题请教：一般的steam cleaner (非压力型)是否也需要 pressure-limiting protective device ？
看22.7的要求好像是这个意思。
1 }% n9 Q7 B, t, GThe steam outlet of instantaneous steam cleaners is sealed and the pressure in the water
container is raised hydraulically until the pressure-limiting protective device operates. The
" I8 E4 O$ _5 S* {pressure shall not exceed three times the pressure measured during the test of Clause 11.
3 K' S" _9 H7 e# i) IThe outlet of the protective device is then sealed and the pressure is further raised to twice
the previous value. The pressure is maintained for a period of 60 s. There shall be no leakage
from the container.
: f' P) K5 \9 k$ J! e: S$ \9 ]还有一个疑问22.7 Replacement:
: F* V* ?; R' r( [Pressurised appliances shall incorporate adequate safeguards against the risk of excessive
pressure.这节好像是对Pressurised appliances的测试要求，怎么把 instantaneous steam cleaners 也搞进去了？
8 b% _: J* u) p. b" K  O/ ^
) V' t; N% k) o5 j7 MNOTE 101 An instantaneous steam cleaner is an appliance in which small quantities of water are pumped from
; s( M7 q. }" o$ Uthe water container, the steam being produced when the water contacts the heated surface of the steam chamber.
6 A% q+ M6 S: R( B# }The water container and the steam chamber are at atmospheric pressure.