Borvig Triple Chair Lift Manual.pdf

This document is an Instruction Manual for a Borvig West Point ski lift system designed for uphill transportation of persons wearing skis.

The manual provides comprehensive operational and maintenance guidance for a triple-type bullwheel-driven lift with a bottom drive location and 2235-foot horizontal length. The system has a 1800 persons-per-hour capacity, operates at 500 feet-per-minute rope speed, and accommodates up to 92 chairs spaced 50 feet apart on the haul rope. The lift design complies with ANSI B77.1 specifications for aerial monocable lifts. The system is winter-operational with bottom counterweight configuration and emergency unloading capability via 503-foot vertical drop. Key operational requirements mandate trained personnel, comprehensive daily pre-operational inspections covering mechanical systems and safety devices, and strict adherence to prohibitions including restrictions on operating with covered bullwheels, severe icing conditions, high winds, intoxicated passengers, and loose clothing hazards. The lift features service and emergency braking systems, with hydraulic fluid requirements specified as Shell Tellus 15 or equivalent. The document includes detailed specifications for haul rope maintenance (industrial castor oil lubrication), chair grip torque testing requirements (212 ftlbs), and bearing maintenance for the bullwheel reversional terminal. Maintenance protocols require monthly lubrication of sheave assemblies with lithium-based grease, quarterly inspection of structural members for paint deterioration, and comprehensive record-keeping including operational logs, wire rope logs, and maintenance logs documenting all service and component replacement activities.