Grease trap cleaner

A grease trap cleaner comprising:

• a suction hose 100 configured to suction contaminants:
• a first pump 10 configured to generate suction force for suction of the contaminants into the cleaner;
• a centrifugal separator unit 300 configured to receive the contaminants, suctioned through the suction hose 100, from a supply pipe 101 and to separate the contaminants into solids and liquids;
• a liquid separation unit 400 configured to receive the liquids separated by the centrifugal separator unit 300 such that the liquids are separated into sewage and waste fat, wherein the liquid separation unit 400 includes:
• a separator 420 having an air bubble diffuser 421 configured to separate the liquids into sewage and waste fat;
• a sewage reservoir 430 configured to store the sewage therein;
• a waste fat collector 422 configured to collect the waste fat;
• and
• a waste fat reservoir 500 configured to store the waste fat collected by the waste fat collector 422;
• and
• a second pump 20 connected to the sewage reservoir 430 and configured to supply water of the sewage reservoir 430 to the first pump 10 and a nozzle unit 130 located at a leading end of the suction hose 100,
• wherein the second pump 20 is configured to supply water to the first pump 10 under control of a first valve 21 installed to a first pump pipe connected to the first pump 10 and to supply water to the nozzle unit 130 under control of a second valve 22 installed to a supply pipe connected to a supply hose 140 located at one side of the suction hose 100.