Installation & testing commissioning
Adequate lighting and 3 – phase power supply for both the elevator and the installation hoist, temporary or permanent positioed according to the lay-out drawing. Lifting hooks and ventilation duct positioned in the top of the shaft according to the lay-out drawing. Finished floor level markings on each landing floor. Lift shaft and pit cleaned and pit waterproofed. Suitable material storage areas agreed with the builder adjacent to the lift shaft. Suitable storage area with locking facility for the installation tools. Clear, unobstructed access routes to at least one entrance, at or next to the ground floor, for long / bulky items defined and clear of obstructions. All landing openings are well protected with coverings. Lift shaft dimensions and tolerances in accordance with lay-out drawing. Suitable provision for disposal of waste materials.
The following 5 steps must be taken in the specified order unless there are essential reasons for doing otherwise:
In any commercial building, vertical transportation represents an important financial investment, as much as hundreds of thousands of dollars for just a medium-size building. With an asset this valuable, it is good business to have a well-defined program to ensure correct elevator maintenance. While this article focuses on maintenance of elevators, much of the general information applies to escalators as well.
An elevator is an extremely complex system with hundreds of parts that must be maintained. One function of maintenance is ensuring continued operation by preventing excessive wear and breakdown. In systems as complex as modern elevator systems, a more important aspect of maintenance is to ensure that the equipment continues to perform as it was originally designed. This can be accomplished only by qualified, trained technicians using the correct equipment and tools.
The components of an elevator system that require regular maintenance can be categorized by their location: in the machine room, the hoistway, or the car. (Note: Maintenance requirements specific to hydraulic or traction elevators are not addressed in this article.)
Elevator Machine Room
The elevator machine room is the heart of the elevator system. It contains the elevator hoisting machines, motor generator sets or solid-state power supply, and control equipment. The control equipment is an essential part of the total operating mechanism that accelerates, decelerates, and levels the car at each floor. Most of the routine maintenance takes place in the machine room. This includes routine servicing of motors, generators, switches, contacts, brakes, and controls.
Hoistway The hoistway contains the guide rails on which the elevator car and counterweight run; the corridor doors, hangers, door locks, and operating mechanisms; switches and other operating and safety devices; and space for cables and other equipment. Equipment within hoistways that requires maintenance includes buffers, corridor door hangers and locks, switches, and safety devices. Most maintenance of these components must be performed from inside the hoistway and outside the elevator car. The hoistway pit houses the car and counterweights buffers, cable pulley and tensioning devices, and limit switches. The overhead of the hoistway may contain the overspeed governor mechanism and limit switches with space for the safety of personnel on the top of the elevator car.
Elevator Car With few exceptions, elevator cars are fire-resistant, well-ventilated structures. Maintenance requirements for elevator cars include servicing door operating equipment and ventilation equipment at the top of the car and safety equipment at the bottom. This work must also be performed from within the hoistway.
Flooring in elevator cars requires daily cleaning and service, and must be replaced more often than other flooring because of the amount of traffic. When replacing the floor, use nonslip material and nonflammable solutions in refinishing or cleaning the cab. Flooring, along with care of car interior finishes, is usually the responsibility of the property owner.
Diagnostics shall be provided onboard. No service tool shall be required for equipment installation, adjustment, maintenance or troubleshooting. Spare or replacement parts shall be available at published prices. Regularly scheduled technical training classes shall be available at reasonable cost. Telephone support shall be provided by trained, experienced technicians, without charge to customers. Engineering field support shall be available at the customer's location, at a reasonable cost, by prior arrangment. All installation, adjustment, maintenance and troubleshooting manuals and documents which are required for proper equipment operation, including as-built prints, shall be provided with equipment. Replacement copies of documentation shall be readily available at reasonable cost. At Elevator Controls, we've put the people and programs in place to support our uncompromising desire to deliver the highest quality products available. We continually measure results to confirm that our demanding internal standards are met. Multi-lingual telephone support is provided by knowledgeable, factory trained technicians. Product R&D engineers are available to respond to particularly challenging questions. Onsite product and engineering support is available worldwide.
Enjoy the benefits of a new elevator without the expense. Modernization makes an elevator safer, more efficient and more attractive. As a result, the building itself gains a more modern image and inherently more value. The riders’ experience improves as well, through reduced waiting time, better comfort and improved reliability — all leading to increased confidence and greater peace of mind. WHEN IS IT TIME TO MODERNIZE? It’s time to consider modernizing if any of these are true… You’re unsure if the elevator complies with current code and safety standards People wait too long in the lobby Passengers complain about poor floor leveling, ride comfort or noise The building’s use has changed since the elevator was first installed The elevator: - is more than 10 years old - looks worn and out-of-date - gets overcrowded - shuts down often