Operation

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 is driven by a V-drive system supported via the shaft by two flange-mounted spherical roller bearings bolted to the A-frame.

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.

Electrically operated drain valves are 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.

There are two possible load balance systems, the “AC Inverter Drive Balance Detection” and the “Overtravel Balance Detection.”

The balance detection system using the overtravel limit switch does not rely on the AC inverter drive and does not attempt to balance the load in a drain step. As the cylinder is spinning at the programmed speed, if the wash load becomes unbalanced, the overtravel limit switch is “tripped” causing the cylinder to slow to a stop until the end of the spin step.

The balance detection system using 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. After the seventh try the machine spins at a safe speed. As a fail-safe measure, an overtravel limit switch is installed.

The machine uses an AC inverter drive control which provides five 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 operator can select from among 30 cycles. A special permanent test cycle can be selected to verify proper operation of the machine.

Liquid supplies can be injected directly into the cups by a customer-supplied external chemical supply system. Five hose strain reliefs on top of the supply dispenser facilitate connection to an external supply system. A terminal strip inside a compartment attached to the left side of the control module, viewed from the rear of the washer-extractor, provides connection points for external supply signals.

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.

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.

NOTE: Never turn the power off while the computer mode switch is in the Program position. Such action will disorder portions of the programmed data, necessitating reprogramming of some or all of the existing cycles. Always return the mode switch to Run position before turning the power off.

12

© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT

F232123