Pressure washer with diagnostic indicators

H - Electricity – 02 – H

Patent

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Details

H02H 7/08 (2006.01) B08B 3/02 (2006.01) B08B 13/00 (2006.01) G12B 11/00 (2006.01) H01H 83/02 (2006.01)

Patent

CA 2556637

An electrical pressure washer includes a diagnostic circuit for detecting operation conditions that may affect the normal operation of the pressure washer, and a plurality of indicators indicating the detected operation conditions, such as ground fault, low pressure, overheating, etc. A voltage drop across the power cord of the pressure washer is monitored and used to identify several of the operating conditions. A way of connecting and controlling light-emitting diodes used as indicator lights is provided to allow energy-efficient operation of the indicator lights.

La présente invention se rapporte à une laveuse à pression électrique, qui comprend un circuit de diagnostic destiné à détecter des conditions de fonctionnement qui risquent de nuire au fonctionnement normal de la laveuse à pression, et une pluralité d'indicateurs indiquant les conditions de fonctionnement détectées, telles qu'un défaut à la terre, une pression faible, une surchauffe, etc. Une baisse de tension dans le cordon d'alimentation de la laveuse à pression est enregistrée et utilisée pour identifier plusieurs des conditions de fonctionnement. Grâce un mode de connexion et de commande particulier, les diodes électroluminescentes servant de lampes témoins ont un fonctionnement à faible consommation d'énergie.

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