The Vapor Swing Door System, also known as the Air-Open Spring Close Door (AOSC), is commonly applied to the rear, exit door of transit buses. This rugged and extremely reliable door system employs basic mechanical principles for years of passenger-friendly service. Accurate component alignment and periodic maintenance will provide smooth and safe performance to reduce component wear, extend door system life and minimize bus down time.
Given the constant daily demands in service, this pneumatic exit door system may become too fast or slow, or begin to rattle. Simple adjustments can restore ideal operating speeds and tightly sealed doors. Accurate alignment is fundamental for all door applications to assure:
• Proper door geometry
• Correct door clearances
• Accurate door motion
• Correct preload and sealing
To assure maximum performance Vapor recommends the Vapor Swing Door system be thoroughly inspected, cleaned, lubricated and adjusted every 250,000 cycles (or 3 or 4 years) and whenever a drive linkage or guidance mechanism component is replaced.
