Method for Continuous Use of a Vacuum-Set Water Knock-Out Circuit Integrated with a Hydraulic Oil Reservoir

A method for the continuous use of a vacuumized water knockout circuit integrated with a contaminated hydraulic-oil reservoir (1), said method comprising the following steps:

• by means of a vacuum pump (12), keeping both a treatment column (8) and the hydraulic-oil reservoir (1) vacuumized up to typically 98%;
• by means of a pump (3), pumping the contaminated hydraulic oil up from a lower portion of an inclined tank (1) through a circulation filter (5) to a heating element (6) and further to the treatment column (8) in which the moisture is extracted from the oil;
• by means of the vacuum pump (12) and controlled oil flow, temperature and underpressure, drawing the water vapour continuously through a vapour cooler (13) into a condensate trap (15) which is emptied automatically via a valve (17);
• evacuating gases continuously from the vacuum pump (12) via a gas filter (18);
• and
• providing continuous transport of vapour out of the treatment column (8) by supplying air via an air filter (21) through a fixed nozzle (22), a valve (23) controlling and safeguarding system functions with respect to pressure.