A new headlight system offers an effective illumination range of 400 ft. Inside, there are easily read instrument panel displays plus a message center that monitors 18 vehicle parameters. Scroll compressors provide faster pulldown and temperature recovery that protects cargo, particularly where delivery cycles involve frequent door openings. Here's how it works. Compression in the scroll is created by the interaction of an orbiting spiral and a stationary spiral.
Gas enters an outer opening as one of the spiral's orbits.
The open passage is sealed off as gas is drawn into the spiral. As the spiral continues to orbit, the gas is compressed into an increasingly smaller pocket. By the time the gas arrives at the center port, discharge pressure has been reached. During operation, all six gas passages are in various stages of compression, resulting in nearly continuous suction and discharge. A cyclonic dry air filter, which uses centrifugal force to collect debris, improves the unit's air filtration and increases filter life.