Theory of Operation

The design of the machine emphasizes performance reliability and long service life. The cylinder, shell, and main body panels are fabricated of stainless steel.

The cylinder on 50-pound capacity machines and smaller is supported with two sealed bearings mounted in a machined cast iron trunnion bolted to a heavy gamma frame.

On 80-pound capacity machines, the cylinder and shaft assembly is supported by two flange roller bearing assemblies. The bearing housings are bolted to the frame.

The 2-speed machines use one dual-speed motor to drive the cylinder via a V-belt drive in wash speed and extract speed.

The 3-speed 18-pound capacity models use one triple-speed motor, while all other 3-speed models use one single-speed and one dual-speed motor to drive the cylinder at wash speed, medium extract speed, and high extract speed.

A door-lock system prevents opening of the stainless steel door when water is in the machine. It also prevents operation of the machine when the door is open.

An electrically operated drain valve is used to retain the water and wash solution in the machine during the wash and rinse steps. The drain valve closes when power is applied and opens when power is removed, allowing the machine to drain in the event of a power failure.

Safety

The cylinder is designed with lifters or ribs that lift the garments from the wash solution when the cylinder rotates at slow speed and allow the garments to tumble back into the solution. The cylinder is perforated, allowing the water to pass through and drain from within during the wash process and extract.

Electrical controls for the machine are housed in a separate enclosure located underneath the top cover of the machine.

The operator can select from among 30 cycles, 12 of which are preprogrammed at the factory. A special permanent test cycle can be selected to verify proper operation of the machine.

The polypropylene supply dispenser is located under a flexible cover on the left side of the machine, viewed from the front. The compartments are numbered 1 – 3, starting from the left side of the machine. A nozzle flushes dry supplies from the compartment with water at the appropriate time in the cycle.

Liquid supplies can be injected directly into the dispenser compartments by a customer-supplied external chemical supply system. Four hose barbs on the rear of the machine facilitate connection to an external chemical supply system. A terminal strip in the input power junction box provides control signals.

F232073

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