Figure 5-14. - Right side view of tumbler.

reversing timer (on machines so equipped), and door safety switch at various times. To make these adjustments, refer to the manufacturer's instructions for specific procedures.

LUBRICATION. - Once a month, remove the circular cover on the drive guard and oil the chain, using SAE-30 oil. The pillow block, trunnion, and motor bearings are sealed and require no service.

STEAM GENERATOR

The purpose of the steam generator is to provide enough steam to operate tumblers, as well as to provide a continuous supply of hot water to the washers under constant operation. One type of steam generator frequently used in laundries at Navy activities is the Clayton steam generator, Model RO-33-PL.

NOTE

Some portable skid-mounted units use a self-contained oil-fired water heater to supply hot water for washers instead of a steam generator.

The Clayton steam generator is a water-tube boiler that delivers its rated output of 99 percent quality steam (containing less than 1 percent moisture) per hour from 60F feedwater. The generator develops its full-rated pressure within 5 minutes from a cold start.

The generator features a continuous circulating feedwater system with a constant capacity pump that ensures a wet tube in the generator-heating unit at all times. Automatic controls regulate the feedwater rate