Elevator Jack Replacement
Replacement of an elevator jack can be an intensive and expensive process. Therefore, it is wise to take proactive steps and replace a cylinder now before it fails and necessitates urgent replacement.
Hydraulic elevators traditionally require a pit jack hole proportional to their total elevator car travel distance, while telescopic jacks offer an economical solution that eliminates this requirement and serve as an efficient machine room alternative.
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The jack is the central working component that raises and lowers a hydraulic elevator, acting as its heart. As such, it serves as a crucial safety feature of an elevator; any failure would result in it plummeting to the bottom of its hoistway and cause substantial damage or harm to passengers and lift/structure alike.
Nationally recognized codes stipulate that an elevator jack must be periodically tested. A static sensor check can determine if one or more cylinders have become misalign.
Jacks are typically protected with a PVC jacket that prevents corrosion that could eventually lead to their failure. Since 1989, all jacks produced have double bottoms which prevent seepage of oil into their respective cylinders.
Elevator jacks are used to move hydraulic elevators between floors. As soon as the elevator travels up or down, its pressurization increases; when coming down again it depressurizes, and so the elevator continues its journey to reach another floor.
Nationally recognized codes require double bottom jacks to address serious safety and environmental concerns. Single bottom jacks can become especially susceptible to corrosion when underground, exposed to dirt, debris, moisture and other elements – this could result in oil seeping into the ground and water table and making the building owner responsible for environmental damages from the Environmental Protection Agency (EPA).
Modernizing elevator jacks may help reduce this costly issue and minimize repair times by decreasing potential problems and repairs timeframes.
A hydraulic jack is the core component of an elevator that elevates and lowers its car. Pressurized with oil when moving upwards, de-pressurized when going downwards.
Most elevator jacks are constructed of metals which can corrode in underground environments where they’re frequently exposed to dirt, debris and moisture, leading to failure and potentially keeping it out of service for months or even years. Furthermore, any incident could become dangerous when passengers may become trapped inside, possibly leading to free fall injuries; and environmental concerns could result from oil seeping into ground and water tables creating liability claims against building owners for environmental protection agency damages.
Modern jacks are constructed with PVC coating to protect the cylinder against corrosion and help reduce failure rates, but should yours ever fail replacement may still be necessary.
A jack is what drives an elevator up and down. The cylinder that the jack sits in is pressurized with hydraulic oil for lifting purposes, de-pressurizing when the car descends again when hydraulic oil pressure de-pressurizes it again. Prior to 1971 single bottom jacks were the norm while later double bottom jacks became available.
Modernizing your elevator jack is an invaluable way to increase safety, reduce environmental impact, and make life more efficient for both passengers and tenants in your building. New jack units are specifically designed to be safer than older versions and may only require a smaller pit hole than older models.
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