PRO WORKER EM is Equipped with a multi-level filtration system including an innovative M/E10 suction filter with NANO TECH coating and a built-in automatic filter shaker, the machine actively prevents clogging to ensure constant, uncompromised suction power. 1 Built tough with a 30-litre shockproof polypropylene tank and a bypass-cooled high-efficiency motor, the PRO WORKER EM delivers reliable, long-lasting performance under the most punishing trade conditions.