Elevator Installers and Repairers (also called Elevator Constructors and Mechanics) assemble, install, replace, maintain, and repair elevators, escalators, dumbwaiters, moving walkways, and other similar equipment.
Elevator installers and repairers—also called elevator constructors or elevator mechanics—assemble, install, and replace elevators, escalators, dumbwaiters, moving walkways, and similar equipment in new and old buildings. Once the equipment is in service, they maintain and repair it. They are also responsible for modernizing older equipment.
In order to install, repair, and maintain modern elevators, which are almost all electronically controlled, elevator installers and repairers must have a thorough knowledge of electronics, electricity, and hydraulics. Many elevators today are installed with microprocessors, which are programmed to constantly analyze traffic conditions in order to dispatch elevators in the most efficient manner. With these computer controls, it is now possible to get the greatest amount of service with the least number of cars.
When installing a new elevator, elevator installers and repairers begin by studying blueprints in order to determine the equipment layout of the framework to install rails, machines, car enclosures, motors, pumps, cylinders, and plunger foundations. Once the layout analysis is completed, they begin equipment installation. Working on scaffolding or platforms, installers bolt or weld steel rails to the walls of the shaft to guide the elevator up and down.
Elevator installers put in electrical wires and controls by running tubing, called "conduit," along the shaft's walls from floor to floor. Once in place, mechanics pull plastic-covered electrical wires through the conduit. They then install electrical components and related devices required at each floor and at the main control panel in the machine room.
Installers bolt or weld together the steel frame of the elevator car at the bottom of the shaft, install the car's platform, walls, and doors, and attach guide shoes and rollers to minimize the lateral motion of the car as it travels through the shaft. They also install the outer doors and door frames at the elevator entrances on each floor.
For cabled elevators, these workers install geared or gearless machines with a traction drive sheave which moves heavy steel cables connected to the elevator car and counterweight. The counterweight moves in the opposite direction from the car and aids in its swift and smooth movement.
Elevator installers also install elevators in which a car sits on a hydraulic plunger that is driven by a pump. The plunger pushes the elevator car up from underneath, similar to a lift in an auto service station. They also install escalators. They put in place the steel framework, the electrically powered stairs, and the tracks, and install associated motors and electrical wiring. In addition to elevators and escalators, elevator installers also may install devices such as dumbwaiters and material lifts, which are similar to elevators in design, moving walkways, stair lifts, and wheelchair lifts.
The most highly skilled elevator installers and repairers, called "adjusters," specialize in fine-tuning all of the equipment after installation. Adjusters must make sure that the elevator is working according to specifications, such as stopping correctly at each floor within a specified time period. Once an elevator is operating properly, it must be maintained and serviced regularly to keep it in safe, working condition. Elevator maintenance mechanics generally do preventive maintenance—such as oiling and greasing moving parts, replacing worn parts, testing equipment with meters and gauges, and adjusting equipment for optimal performance. They also troubleshoot and may be called in to do emergency repairs.
A service crew usually handles major repairs—for example, replacing cables, elevator doors, or machine bearings. This may require cutting torches or rigging equipment—tools a maintenance mechanic would not normally carry. Service crews also do major modernization and alteration work, such as moving and replacing electrical motors, hydraulic pumps, and control panels.
Elevator installers and repairers usually specialize in installation, maintenance, or repair work. Maintenance and repair workers generally need more knowledge of electricity and electronics than installers because a large part of maintenance and repair work is troubleshooting. Similarly, construction adjusters need a thorough knowledge of electricity, electronics, and computers to ensure that newly installed elevators operate properly.
| |
| İlanlar |
Search Engine Optimization and SEO Tools
IP adresi
