This manual is designed as a guide to the installation and maintenance of the UW35 and UW60 2 speed rigid-mount washer-extractor.
All information, illustrations, and specifications contained in this manual are based on the latest product information available at the time of printing. We reserve the right to make changes at any time without notice.
Machine OverviewThe design of the washer-extractor emphasizes performance reliability and long service life. The cylinder, shell, and main body panels are fabricated of stainless steel. The washer-extractor is mounted on a welded base frame which supports the bearings, cylinder, and shell.
Electrical controls for the washer-extractor are housed in a separate enclosure located on the top of the machine. The controls are accessed by removing the top cover from the control module.
One 2 speed motor drives the cylinder via a V-drive system. The cylinder is supported via the shaft by two bearings. The UW35 uses two ball bearing sets held in place by a cast-iron housing that is bolted to the A- frame. The UW60 uses two flange-mounted, spherical roller bearings bolted to the A-frame.
On the UW60, a balance switch is installed between the faces of the A-frame to signal the controls to slow the machine when a severely out-of-balance load occurs during extract.
The cylinder is constructed with lifters or ribs that lift the laundry from the bath solution when the cylinder rotates at slow speed and then allow the laundry to tumble back into the bath. This mechanical action accomplishes the washing function. The cylinder is perforated, allowing the water to drain from within during the wash and extract steps.
The spray rinse feature (available only on S and P computers) consists of a fiber-reinforced clear hose connected to the center of the door glass and to both a hot and cold water inlet valve. A hemispherically- shaped spray nozzle inside the door glass produces a fan-action water spray which disperses rinse water throughout the load.
Water enters the machine through electromechanical water valves. Vacuum breakers are installed in the water-inlet plumbing to prevent backflow of water.
A motorized drain valve holds water in the machine during the wash, soak, and rinse steps. The drain valve is normally open, which means that it closes only when power is applied, thus allowing the machine to drain in the event of a power failure.
A door-lock system prevents opening of the stainless steel door when a cycle is in progress. It also prevents operation of the machine when the door is open. The doorbox contains the door-lock microswitch, door- closed magnetic switch, and the door unlock solenoid.
The UW35 shaft seal assembly includes two lip seals integrated into the cast-iron bearing housing. Each seal has two lips which make contact with a polished sleeve mounted to the shaft.
The UW60 shaft seal assembly includes a brass collar held in place on the cylinder shaft with set screws. The collar has a flange with a ceramic ring which makes contact with a spring-loaded carbon face seal enclosed in a nylon housing mounted on the rear of the shell. The collar contains two internal O-rings which maintain contact with the cylinder shaft.
The polypropylene supply dispenser is mounted on the right side of the washer-extractor, viewed from the front. The dispenser has five supply compartments, numbered 1–5, starting from the rear of the machine. The compartments hold plastic supply cups that are used for either liquid or dry supplies. A nozzle flushes supplies from the cups with water for the time programmed in the cycle.
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. On all P and B models this terminal strip is located on the rear of the module.