A particle separator includes a particle separation member to separate particles from liquid; a particle collection member for collecting particles from the particle separation member; and a liquid guiding member for guiding liquid flowing from the particle separation member to an outlet. The particle separation member includes an inlet for receiving un-clean liquid, a first separation section configured for preliminarily separating particles from the liquid, and a second separation section for separating further particles from liquid flowing from the first separation section. The second separation section includes a plurality of cyclones each having a wide open end connected to the first separation section and a narrow open end connected to the particle collection member.