| 摘要 |
<p>Method for cleaning hydraulic liquid in an electrically powered industrial truck (15) having a battery (17) and a hydraulic system comprising a hydraulic pump (10), a hydraulic reservoir (11), and a return pipe to the hydraulic reservoir (11) with a return filter (3), wherein the method comprises the steps of: the hydraulic pump (10) is activated for hydraulic activity, the hydraulic pump (10) pumps the liquid for the hydraulic activity and in relation to this return flow through the return filter (3) to the hydraulic reservoir (11) occurs, the hydraulic pump (10) can be activated by means comprised in the industrial truck (15), when hydraulic activity is not present, by that achieving a circulation to the hydraulic reservoir (11) through the return filter 3 such that sufficient filtration of the hydraulic liquid is reached, further a time Tb for circulation without hydraulic activity can be accumulated and/or a sensor (18) for determining the quality of the hydraulic oil can be arranged in the industrial truck (15). Termination of the circulation is based on Tb and/or the measured quality. The application also relates to a computer program product, a control unit (12) and an industrial truck (15) that can perform the method.</p> |
