求翻译：当气压上升到额定值时，应检查试供水设备及排污装置，确保锅炉的正常供水及排污，以防因锅炉烧干锅引发安全事故；是什么意思？

When the pressure rise to the rating should test the water supply equipment and sewage installations, ensure that the boiler water supply and sewage, to prevent the boiler burning Griddle lead to security incidents;

When pressure increases, and should be checked at the Rated test water supply equipment and sewage devices, ensure that the boiler of normal water supply and sewage in order to prevent a dry pot boilers caused accidents;

When the barometric pressure rises to the rated value, should inspect tries the feedwater equipment and the pollution discharge installment, guarantees the boiler the normal water supply and the pollution discharge, because guards against the boiler to bake the pot initiation security accident;

As the pressure rises to rated value, the test equipment for water supply and sewage installations should be checked to ensure normal boiler water-supply and sewage to prevent boiler burning pot caused safety accidents;

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