Exemplary embodiments are directed to pool cleaners, generally including a canister body, a filtering medium assembly and a cyclone block. The canister body includes an inner chamber within inner walls of the canister body. The filtering medium assembly can be disposed within the inner chamber of the canister body. The cyclone block can be disposed within the inner chamber of the canister body and can be at least partially surrounded by the filtering medium assembly. The cyclone block includes a plurality of individual cyclone containers. A first cyclonic flow can be generated between the inner walls of the canister body and the filtering medium assembly. A second cyclonic flow can be generated within each of the plurality of cyclone containers.

Exemplary embodiments are directed to pool cleaners that remove debris from water using a plurality of cyclonic flows, or that include a removable impeller subassembly, a check valve for a debris canister, a particle separator assembly having a handle that locks to the pool cleaner, a modular roller drive gear box, or a roller latch that secures a roller to the pool cleaner. Exemplary embodiments are also directed to the check valve and the roller latch themselves. Exemplary embodiments are directed to a filter medium for pool cleaners that includes embossments providing flow channels for water, and to roller assemblies for pool cleaners. Exemplary embodiments are directed to pool cleaners including alternative pump motor engagements. Exemplary embodiments are directed to pool cleaners power supplies that include a potted and contoured power board assembly, and to kickstands therefor. Exemplary embodiments are directed to a pool cleaner caddy, and removable wheels therefor.

The present invention provides a system, method and apparatus for treating a liquid by providing a santitary type stainless steel hydrocyclone, flowing the liquid through the hydrocyclone, and turning on a plasma torch attached to the hydrocyclone such that a plasma arc irradiates the liquid. The hydrocyclone can be a forward flow hydrocyclone, a reverse flow hydrocyclone, a through flow hydrocyclone, a hydrocyclone pump or a volute.

The present invention provides a system, method and apparatus for treating a liquid by providing a santitary type stainless steel hydrocyclone, flowing the liquid through the hydrocyclone, and turning on a plasma torch attached to the hydrocyclone such that a plasma arc irradiates the liquid. The hydrocyclone can be a forward flow hydrocyclone, a reverse flow hydrocyclone, a through flow hydrocyclone, a hydrocyclone pump or a volute.

Apparatus features a signal processor module that responds to signals containing information about sensed sound propagating through a slurry flowing in part, including overflow pipes, of cyclones operating in parallel on a cyclone battery, and determine corresponding signaling containing information about the performance of individual cyclones based upon the signals received. The signal processor forms part of a non-invasive acoustic-based passive monitoring system having cyclones and sensors attached thereto. The signal processor module provides the corresponding signaling as output or control signaling, e.g., for controlling the cyclone battery.

The present invention provides a system, method and apparatus for treating a liquid by providing a santitary type stainless steel hydrocyclone, flowing the liquid through the hydrocyclone, and turning on a plasma torch attached to the hydrocyclone such that a plasma arc irradiates the liquid. The hydrocyclone can be a forward flow hydrocyclone, a reverse flow hydrocyclone, a through flow hydrocyclone, a hydrocyclone pump or a volute.

The present invention provides a system, method and apparatus for treating a liquid by providing a santitary type stainless steel hydrocyclone, flowing the liquid through the hydrocyclone, and turning on a plasma torch attached to the hydrocyclone such that a plasma arc irradiates the liquid. The hydrocyclone can be a forward flow hydrocyclone, a reverse flow hydrocyclone, a through flow hydrocyclone, a hydrocyclone pump or a volute.