Abstract: A pool cleaning robot comprising: a housing; an impeller and a motor; at least one filter compartment configured for accommodating a filter unit therein; an impeller outlet formed in a housing top surface; at least one additional outlet other than the impeller outlet configured for being fluidly connected to an external suction and filtering system; at least one bottom inlet formed in said housing bottom configured for a first fluid communication with the impeller outlet via said filter unit, thereby defining a first fluid path; and at least one bottom inlet formed in said housing bottom configured for a second fluid communication with said additional outlet via a second fluid path at least partially different from the first fluid path, said second fluid path constituting a part of an external suction and filtering fluid path created when said additional outlet is fluidly connected to an external suction and filtering system.

Abstract: A pool cleaning robot comprising: a housing; an impeller and a motor; at least one filter compartment configured for accommodating a filter unit therein; an impeller outlet formed in a housing top surface; at least one additional outlet other than the impeller outlet configured for being fluidly connected to an external suction and filtering system; at least one bottom inlet formed in said housing bottom configured for a first fluid communication with the impeller outlet via said filter unit, thereby defining a first fluid path; and at least one bottom inlet formed in said housing bottom configured for a second fluid communication with said additional outlet via a second fluid path at least partially different from the first fluid path, said second fluid path constituting a part of an external suction and filtering fluid path created when said additional outlet is fluidly connected to an external suction and filtering system.