A. Rated load _________ pound capacity

B. Minimum travel speed shall be _________________ F.P.M

• If rated speed is 50 F.P.M. drive and control shall be single speed A.C.
• If rated speed exceeds 50 F.P.M., drive and control shall be variable voltage, variable frequency A.C.

C. Leveling Accuracy: Car floor shall be no more than 1/2" above or below the level of the hoistway door sill.

Part 3 - Execution 3.1

Installation

A. Coordinate work with General Contractor.

B. Leave standard electrical connection drawings with electrical contractor to make final electrical connection. Wiring within unit shall be done as part of work of the is section, 20 amp circuit required.

C. The installation of the dumbwaiter shall be made in accordance with the approves plans and specifications and manufacture's installation instructions

Different Types of Systems: Vertical Reciprocating Conveyors

Vertical reciprocating conveyors are vertical lifts designed for large scale, higher-speed delivery of heavy or bulky materials (the term ‘reciprocating' indicates that the conveyor moves up and down). They can be utilized in either commercial or industrial applications but cannot be exposed to or used by the general public. In commercial buildings a conveyor is usually contained within a fire-rated shaft with fire-rated hoistway entrances. In industrial applications it is often protected by sheet metal barriers, which have no fire rating. Conveyors are regulated by ASME B.20.1 safety standard.

• Virtually unlimited travel distance.
• Speeds up to 300 feet per minute.
• Load capacity up to 2000 lbs.
• Platform size up to 52-inches x 52-inches.
• Loads from floor or platform height.
• Can be manually loaded or installed with optional transfer device for automatic load/unload, or for interfacing with automated material handling systems.
• Options include carriage enclosure; power-operated guard doors; touch screen control module.
• Self-supporting.
• Modular construction.

Conveyors may be specified with aroped hydraulic lift equipment for low speed and medium rise applications. They offer the least expensive means to raise heavy loads and the design advantage of having a machine that is located outside but adjacent to the hoistway at the rear or side of the car. The hydraulic system works by pumping oil into a cylinder, which causes a jack to rise. Stationary cables attached to the car pass over the sheave on top of the jack. When the jack rises, the cables hoist the car and vice versa. Unlike a direct action hydraulic system, no deep hole is needed to sink the hoistway at the rear or side of the car. Hydraulic lifts costs are in the medium range.

Diagram A Approximate hoistway or shaft dimensions for drum and dumbwaiter installations Notes 1. Lift supporting structure is connected to the building at the loading levels for stabilization. 2. Overhead requirements vary depending on equipment furnished. Certain options can have a substantial impact. 3. Minimum loading height at the lower level can vary due to model or options chosen. Consult supplier for nominal height. 4. For Floor Loading conveyors loading height can be level with floor if a pit is provided. 5. With Above Floor Loading the driving machine may be located below the door entry.