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 machine uses one motor to drive the cylinder via a V-belt drive in all speeds.

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 fill 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.

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 machine uses an AC inverter drive control which provides six motor speeds using a single motor. The solid state output board converts motor logic from the V-computer to the correct signals for the AC inverter drive.

The AC inverter drive uses special balance detection software in conjunction with the V-computer to prevent out-of-balance conditions. When the AC drive detects an unbalanced load at the end of a drain step, the computer will make up to seven attempts to balance the load. As a fail-safe measure, an overtravel limit switch is installed between the frame and the sump, stopping the AC drive when tripped.

Operation

The operator can select from among 30 cycles, 16 of which are preprogrammed at the factory. On export models, 10 cycles are preprogrammed at the factory. A special permanent test cycle can be selected to verify proper operation of the machine.

Electronic sensing of load balancing is utilized to attempt to optimize load balance prior to extract.

The machine is equipped with five hose barbs on the rear of the machine to facilitate connection to an external chemical supply system. A terminal strip in the input power junction box provides control signals for an external chemical supply system.

V-Computer

The V-computer control is a programmable solid- state control capable of storing and running up to 30 cycles. A detailed description of these cycles can be found in the Programming section of this manual under V-Computer Standard OPL Cycles and V-Computer Export OPL Cycles.

If this machine’s computer has been equipped with special preprogrammed cycles, a separate insert listing these cycles has been included in the resealable plastic bag which contained this manual.

F232072

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