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Scissor lift operators and site managers at corporations large and small take on jobs that can be handled more efficiently and safely with a mechanical lift that is properly matched to the task at hand. Operators and site managers use them to increase productivity, improve safety and save money, but they will only succeed when they have the right equipment for the right project.

Most scissor lifts have a diverse range of uses, but it can be detrimental if the lift does not have the right size, capacity, height or other specifications needed for the job.

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Because aerial lifts &#; such as scissor or boom lifts &#; are often the best way to reach elevated work areas, a general knowledge of each benefits operators and site managers. Ownership or rental of a new or used scissor lift is an important step for any contractor. MacAllister Rentals can help with the entire process from initial consultation through product selection and maintenance.

Scissor Lifts 101

A scissor lift is a machine made to move personnel and equipment in a vertical direction. These lifts can handle any application that would normally require a ladder, tower or scaffolding. Scissor lifts enable operators to complete the same jobs faster and more securely without the setup time of other equipment, such as scaffolding or a tower, and without the dangerous instability of a ladder.

Although the chance of a fall can never be completely eliminated when you work at any height, scissor lifts provide a safety harness or cable as well as a sturdy platform surrounded by a railing. The scissor lift&#;s work platform provides a solid foundation and unsurpassed safety for work of all types that happens at low to medium elevations.

Sometimes you will hear of a scissor lift referred to by one of these names for its technical classification:

• Mobile, elevated work platform (MEWP)
• Aerial work platform (AWP)
• Elevated work platform (EWP)

The lift is usually made of steel and includes a platform and railing supported by a beam &#; or bar-style struts. The way the struts hinge together makes the assembly look like several sets of connected scissor blades, and as they operate, they perform an open-close motion similar to scissors. The X pattern actually has a technical name called a pantograph, and hydraulic mechanisms power the scissor action that enables the lift.

Scissor lifts typically extend from 10-60 feet vertically depending on the model, and the working heights tend to range between 20 and 40 feet, though there are models that move higher. Certain scissor lifts may even be moved forward and backwards with the lift partially extended, but this should only be undertaken with great caution. Always review your lift&#;s user manual to check safety precautions for moving lifts while extended.

Other types of aerial lifts, such as an articulated or telescoping boom, reach higher heights than standard scissor lifts, but the scissor lift is able to carry more weight and offers a functional work platform. Scissor lifts also have an advantage over other options with their relatively small storage size when folded, which ranges from about five to nine feet in height and feature widths from 2&#; 6&#; to 5&#; 9&#;.

Some lifts sit on four wheels or legs and other models have outriggers that go into or onto the surrounding ground to add stability. Some scissor lifts run on electricity and/or a battery, while others take gas, diesel or other kinds of fuel.

Some machines are made to operate indoors, like those used for building maintenance or warehousing, while rough-terrain scissor lifts (RTS) can stand up to outdoor conditions and challenging paths. Some have non-marking tires while others do not. With many options within the same class of MEWP, the first step toward acquiring or renting a scissor lift is to consider what kind of work it will do and in what environments.

Many scissor lift models produce no emissions and operate at a low noise level.

Lift Needs and Site Assessment

Matching the height, dimensions and other specifications of a scissor lift to the job and environment is not only a matter of logistics, but also efficiency and most importantly, safety. The first step in getting a scissor lift in to do the job is to assess the site and goals, which will involve asking the following questions:

1. Environment &#; Will the lift operate indoors or outdoors?
2. Emissions &#; What is the tolerance for emissions in the work area?
3. Terrain &#; What is the terrain like where it will operate?
4. Work Heights &#; What are the minimum and maximum work heights it will need to reach?
5. Temperature &#; Will its environment be temperature controlled/is weather a factor?
6. Use Frequency &#; How often will it run, for example continuously or occasionally?
7. Load Weight &#; How heavy of a load will it need to lift?
8. Clearance &#; What is the clearance in the aisles or other workspaces where the scissor lift will operate?
9. Travel Distance &#; How far or how much will the unit need to travel in a day?
10. Essential Function &#; Is the main objective to reach, carry a load or equal amounts of both?

It is a good idea to enlist professional help as you figure out which machine will fulfill your needs the best.

Let&#;s take a closer look at some of these considerations.

Any dimension restrictions such as narrow aisles, or load requirements such as extra-heavy weight, need to be considered.

You might need an ultra-quiet lift that generates no emissions and has non-marking tires, or it may need to be a lift that has a small, manageable step up to the platform and extends to a relatively low working height.

Along with the high ceilings of many structures come tall walls, and they both hold lights, artwork and other objects that must be accessed for maintenance and cleaning. These wide-ranging indoor needs are served by electric scissor lifts, while gas and diesel-powered models can handle outdoor jobs.

For example, if a construction company owner looks at purchasing a scissor lift, they need to consider the equipment&#;s task, including necessary mobility and minimum and maximum heights that need to be reached. If your construction company builds average residential homes, you may never work much higher than at the standard height for one residential floor, a little more than 10 feet. Commercial floors are a little taller, about 11.4 feet, and both types would have allowances for rafter and roof heights.

Your needs assessment should include present and future requirements for the machinery. Anytime someone considers the purchase or rental of a piece of major machinery, they are making an investment especially when it enables the owner to break into new kinds of work.

For example, if you are a brick mason who only bids on jobs for one-story buildings because your folding scaffolding limits the heights your crew can work at, a scissor lift could significantly increase the number of jobs your business could take on.

Industry and Business Applications

A number of jobs require scissor lifts. If you see your job description or place of work below, a scissor lift could significantly improve the efficiency and safety of your work.

1. 1. Building maintenance: Some aspects of building maintenance require working high in the air, such as changing lights, hanging banners, laying bricks, pouring concrete, changing signs, accessing utilities and many other tasks. Scissor lifts are a popular choice inside buildings since they help workers accomplish tasks safely. Plus, they are mobile and can be independently moved from one area of a building to another. These applications are typically done by:
      • Churches
      • Libraries
      • Schools
      • Hospitals
   2. Construction: Scissor lifts provide a mobile, versatile solution for dynamic construction projects that may have frequently changing environments. This makes scissor lifts beneficial for:
      • Renovation Contracting
      • General contracting

1. 3. Delivery: Busy hubs of shipping activity generally include the tasks that scissor lifts do well with, such as reaching to heights and carrying heavy loads that cannot be lifted by hand.
   4. Overhead signs: From individual establishments to property managers with multiple sites, the world is full of signs that change often. Rental or ownership of a scissor lift can alleviate many worries and headaches associated with making those changes. Some businesses that often change signage include:
      • Mechanic shops
      • Storage Facilities
      • Utilities
      • Parking lot maintenance
   5. Production: An aerial platform can improve operating efficiencies by quickly and safely reaching high heights and lifting heavy loads. This makes scissor lifts helpful for:
      • Manufacturing
      • Chemical processing
      • Food processing
      • Brick-laying
   6. Rail: Many jobs around the railyard such as loading and fitting into narrow spaces to reach up high require the use of scissor lifts every day.
   7. Retail: From the big-name stores to smaller operations, many retailers find themselves relying on scissor lifts. Store and warehouse shelves are tall, and product is stacked up to save space. Scissor lifts can respond to the changing needs and products.
   8. Transportation: Truck and rail facilities around the country and the world have goods to reach, store and retrieve, often on different levels of a warehouse building. Pallets, roll cages, parts and people can be safely transported to another floor.
   9. Warehousing: When storage is the name of the game, every vertical and horizontal inch of space must be used efficiently. Investing in a scissor lift for warehouses can open new areas for use or expedite the retrieval process. Similar uses exist in:
      • Property management
      • Landscaping
      • Transportation management

Huge corporate operations as well as small businesses and individual company owners find that scissor lifts help accomplish their elevated tasks.

Scissor Lift Specs

Within each class of scissor and aerial lifts are several brands of machines. MacAllister Rentals carries a wide selection featuring JLG, Genie and others. Once the site and needs assessment reveals factors such as requirements, dimensions, weight and more, they can be matched to the right machine.

For example, the Hy-Brid model would be ideal for operation within a hospital, clinic, office or library setting because of a number of its features:

• Limited weight of 1,275 pounds that can safely go on limited-capacity mezzanine levels, computer floors and passenger elevators
• Simple, maintenance-free, fully enclosed hydraulics
• Maximum speed of two miles per hour lowered
• Compact 25-inch by 60-inch platform
• Slim, overall width of 30 inches
• 20-inch step height for better access
• 16-foot working height
• Non-marking tires to avoid scuffs and floor or carpet damage
• Two-person capacity
• Quiet, electric power

As another example, the bigger JLG LE and LE would better serve a manufacturing plant, warehouse, parking lot or other indoor environment where the machine has plenty of room to operate and is probably expected to bear a heavy load:

• Weight of 10,560 pounds provides for rock-solid stability
• Lift capacity of 800- pounds
• Operational diagnostics on board with an analyzer
• Maximum speed of 3 miles per hour lowered
• Large 65-inch by 115-inch platform
• Oscillating axle for efficient maneuverability
• 33-40-foot extension height
• Lift-lower time of less than one minute
• Foldable hand rails
• Electric power for no emission and quiet operation

In between these two models are at least a dozen other electric-powered indoor scissor lifts to serve a variety of needs. When the projects take place outdoors, there is another family of scissor lifts to take care of business. These bigger models are usually called rough-terrain models, run on gas or diesel fuel and have hefty tires made to roll over dirt and rocks.

Many of the bigger outdoor models have four-wheel drive so they can get into those hard-to-reach places. The heavier-duty platforms carry weights in a general range between 1,000 and 2,250 pounds, which start about where the electric models leave off at their maximum. Gas and diesel-powered scissor lifts generally reach higher than their electric counterparts, with working heights between 38 and 50 feet.

Gas and diesel powered lifts have more generous platforms with room for several people plus equipment. The major differences among models tend to be how high they reach, how big a platform they have, how much weight the platform will carry and their drive capacity, such as four-wheel or all-wheel drive.

Rough terrain models can be outfitted with stabilizing struts too, for when they are stationary. These bigger, gas or diesel-powered models tend serve in construction, utilities, landscaping and other industries where work takes place outside.

Scissor Lift Accessories and Attachments

Many models of scissor lifts have optional features available that make them even more versatile and allow users to customize the lift:

• Amber flashing light
• Quick charge capability
• All-wheel drive
• Lights on the work platform
• Leveling jacks
• Saloon-style swing gate on the platform
• Spring-loaded gate on the platform
• Heavy-duty hinges for battery compartments
• An airline to the platform
• Swing-out surfaces for more room on the platform
• Maintenance-free batteries
• Horn
• Biodegradable hydraulic fluid
• Platform padding
• Welder/electrician/plumber package

Scissor Lift Safety

Scissor lifts, as with any aerial lift, require orientation and training to use safely. Operators will need to know how high the lift goes and exactly how that relates to objects such as the ceiling in a building and the power lines outside. Anyone running the scissor lift will need to be familiar with the controls and other normal operations, as well as what to do if something goes wrong.

Other dangers when using scissor lifts can include:

• High winds
• Power lines
• Uneven ground
• Lack of safety rails (on older or damaged models)
• Overload

These steps aren&#;t unreasonable considering they protect people from accidents and companies from liability. Safety on machines that lift people and equipment is so important that strict regulations apply, and operators must be properly trained. Once operators complete the training, they receive a three-year certificate. Some cities have ordinances or policies requiring anyone operating an aerial work platform to have the proper licensing.

Part of your safety plan should include regular inspection to make sure all the hinges are properly extended and that all components are working correctly. For a number of reasons, bad weather &#; such as rain, hail, snow, sleet and lightning &#; is an enemy to safe scissor-lift operations.

Purchase and Rental Options

The price of a new scissor lift ranges from around $12,000 to $70,000 depending on the model, features and capacity sought. Used scissor lifts can be a more economical path to ownership since they have great potential to get the job done at a lower price than new. Rental of a scissor lift can also be a great, flexible money-saving option to use as needed.

Why rent a scissor lift? Flexible rental contracts are available &#; daily, weekly, monthly, or longer if needed. Scissor lift rental has none of the costs associated with ownership such as sales taxes, and maintenance.

Partner with Rental Professionals

MacAllister Rentals provides for any kind of scissor, or other aerial lift &#; whether you are looking to buy or rent a machine. Our rental division opened in as part of the MacAllister Machinery family. The company is in its third generation of family ownership.

Along with experience and variety of industries served, MacAllister Rentals has locations throughout Indiana and Michigan to make it convenient, fast and easy to access our huge inventory of machines for rent and for sale.

When you partner with us, you&#;ll find the best in customer service &#; not just on the day of rental and return, but all the times in between. We value our clients and know that industry leadership is earned by providing the best solutions at the best price. Contact us today with any questions about scissor lifts or other equipment, and we&#;ll be happy to help.

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Introduction

This article will take an in-depth look at scissor lifts.

The article will bring more detail on topics such as:

• Principle of Scissor Lifts
• Types of Scissor Lifts
• Applications and Benefits of Scissor Lifts
• And Much More&#;

Chapter 1: What is the principle of scissor lifts?

This section will explore the details of scissor lifts and their various parts.

What is a Scissor Lift?

Scissor lifts are a form of elevated work platform frequently employed in construction and building upkeep to elevate workers and equipment to necessary heights.

The scissor lift consists of both a power system and a control system that work together. These systems are interdependent, with the control system receiving its power from electricity, diesel, or compressed air. The operation involves driving a pressure pump to increase pressure within the hydraulic cylinder, transferring hydraulic oil into the lift cylinder, and using this pressure to elevate the support arms, all driven by 220V or 380V electricity.

A scissor lift is a type of mechanical device designed to lift or lower items using electric power. It is primarily used in industries and tasks that require working at height, including sectors like manufacturing, chemical processing, municipal services, electric utilities, and logistics.

Scissor Lift Components

The key components or parts of a scissor lift are:

Scissor Lift Platform

A scissor lift mechanism's platform can be a variety of sizes, forms, and materials. The platform, also known as a lift table, is the working area that supports the load of workers or work objects being raised or lowered by the scissor lift. For fall protection, most units that transport personnel have a platform with guardrails around the perimeter. Lifting and lowering goods and inanimate things are common uses for platforms without rails.

Scissor Legs

The scissor lift features a pantograph arrangement of metal struts that form an X-shaped pattern, linking the platform to the base. The maximum height the lift can reach is influenced by the length and quantity of these struts. As the struts compress and extend, they move the platform up and down. The power for this movement can come from different sources, depending on the specific requirements of the application.

Scissor Lift Cylinders

Scissor lifts typically incorporate one to four cylinders for compression or expansion. These cylinders may be filled with hydraulic fluid in hydraulic models or compressed air in pneumatic systems, depending on the design and operational needs. By adjusting the pressure within these cylinders, the lift mechanism raises or lowers the platform and scissor legs.

Scissor Lift Base

The scissor lift mechanism is supported by a sturdy base constructed from durable, rigid brackets. Tracks direct the rollers located at the bottom of the scissor legs within this base. Together with strong support from the base, these rollers ensure smooth and stable movement during elevation and descent. The design and dimensions of the base can vary depending on the specific model and intended use of the scissor lift.

Scissor Lift Power Source

Scissor lifts can be powered by a range of sources, including self-contained engines that use different fuels or external power units. The choice of power source depends on the operating environment and specific requirements of the scissor lift.

Scissor Lift Down Valve

The down valve regulates the return of compressed air or hydraulic fluid to its reservoir, influencing the speed at which the platform descends. This valve, which controls the rate of descent, is linked to the power supply.

Scissor Lift Flow Control Valve

The flow control valve manages the rate at which fluid or compressed air enters or exits the reservoir cylinder, thereby regulating the speed of the scissor lift's ascent and descent.

Chapter 2: What are the types of scissor lifts?

Scissor lifts come in four structural varieties: scissor cylinder type, aluminum alloy (column) type, crank type, and chain type. These lifts are user-friendly, versatile, and well-suited for various home-related tasks, offering excellent stability.

The various types of scissor lifts are as follows:

Hydraulic Scissor Lifts

Hydraulic scissor lifts can be used indoors and outside and powered by either an electric motor or compressed air. From cylinder to cylinder, the hydraulic liquid is pushed or drained, allowing the scissor lift to raise or drop as needed. Warehouses, construction sites, and infrastructure projects are all good places to use hydraulic scissor lifts. The scissor lift operator turns on the power supply. Filling the cylinder(s) with hydraulic fluid begins with the use of a valve to control the flow of fluid or air (or compressed air in a pneumatic system).

The scissor lift control system directs hydraulic fluid or compressed air from the reservoir to the operating cylinders. To lift the platform, the hydraulic cylinder extends, causing the scissor legs to spread apart. To lower the platform, the operator returns the fluid to the reservoir or reduces the air pressure in the cylinder, which causes the scissor legs to retract and bring the platform down.

The term "scissor" refers to the cross-braced mechanism between the base and the elevated platform, resembling the action of a pair of scissors. Fixed installation lifts are often used to transfer items from vehicles to a building's receiving areas across different floor levels. Conversely, mobile hydraulic scissor lifts are compact, lightweight devices designed for moving goods or large objects within a factory or workshop.

Diesel Powered Scissor Lift

Diesel scissor lifts are powered by traditional diesel engines, which are less environmentally friendly compared to electric models due to their noise and exhaust emissions. These lifts typically feature larger platforms and are ideal for outdoor construction sites, well-ventilated indoor environments, or locations where engine noise is not a major concern. Diesel fuel is generally more economical than gasoline and provides substantial torque at low RPMs.

Heavy-duty diesel scissor lifts are designed with larger platforms and higher load capacities. Some models feature hybrid powertrains for use in enclosed environments. These lifts are among the most robust available, making them well-suited for demanding tasks. They are commonly used on outdoor job sites, with certain versions, such as those designed for rough terrain, capable of handling uneven surfaces. Additionally, many diesel scissor lifts offer expansive deck areas and significant platform capacities, allowing operators to handle large and heavy equipment with ease.

Electric Scissor Lift

Electric scissor lifts are more environmentally friendly, operating on battery power instead of a combustion engine. They are ideal for indoor use due to their quiet operation and zero exhaust emissions. Typically, electric models are more compact and feature narrower platforms compared to their diesel counterparts. To avoid damaging floors, they often come with non-marking tires. While they are generally used for smaller tasks and have lower load capacities compared to diesel, gas, or propane-powered lifts, they are well-suited for indoor environments.

Smaller scissor lifts can be easily transported or towed between job sites. For specific uses, they can be mounted on automated guided vehicles (AGVs), flatbeds, or railcars. Their all-steel construction and twin shear scissor stack ensure both rigidity and durability for long-term operation. Electric scissor lifts are designed for reliable performance, utilizing high-quality components and deep cycle batteries that last throughout the duration of the job.

Rough Terrain Scissor Lift

Rough terrain scissor lifts are specialized elevated work platforms designed to handle challenging outdoor environments. Typically powered by diesel, petrol, or LPG engines, these lifts provide the extra power needed to navigate rugged surfaces and lift heavier loads. They feature enhanced traction and higher travel speeds, facilitating safe movement across large construction sites. These machines are primarily used to elevate personnel and materials from uneven ground, making them ideal for demanding conditions where they enhance productivity through improved traction, gradeability, and operational speed.

Gradeability refers to the maximum slope a rough terrain scissor lift can ascend compared to its operating angle, which is the steepest gradient the machine can handle while in use. In the accessibility industry, gradeability indicates the steepest incline a machine can climb or descend. Rough terrain lifts are equipped with high-performance tires and four-wheel drive (4WD) to deliver the necessary power for navigating steeper gradients effectively.

Pneumatic Scissor Lift

Pneumatic scissor lifts are driven by air rather than electricity or hydraulics, resulting in a very clean and low-maintenance lift. They are great for operations that aim to be ecologically friendly and reduce their carbon footprint because they use air pressure to raise and lower the lift. The airbag or numerous airbags used in the scissor lift operating system are commonly configured as single, double, or multiple, depending on the size of the scissor lift and its use. The unit is elevated and positioned by an air compressor for working or simple loading and unloading.

Pneumatic lifts offer an eco-friendly alternative for smaller-scale and indoor use, as they do not emit harmful gases. The Pneumatic Scissor Lift, constructed from durable steel, positions pallets within easy reach of the operator, enhancing convenience and efficiency. Being entirely pneumatic, it is straightforward to operate, with no electrical or hydraulic systems involved. The platform is controlled by a lever that adjusts the height of the load to suit the worker&#;s needs. Smooth rotation is facilitated by ball bearing center pivots.

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Chapter 3: What are the applications and benefits of scissor lifts?

This chapter will explore the various applications and advantages of scissor lifts. It will also cover important factors to consider when choosing scissor lifts, including aspects of inspection, maintenance, and common issues encountered with these devices.

Application of Scissor Lifts

The applications of scissor lifts are:

• Building Maintenance: Changing lights, hanging banners, laying bricks, pouring concrete, changing signs, accessing utilities, and a variety of other chores all necessitate working high in the air. Inside structures, scissor lifts are a popular choice since they allow personnel to complete duties safely. Furthermore, they are transportable and can be moved from one building area to another on their own. Churches, Libraries, Schools, and Hospitals are often responsible for these applications.
• Building: Scissor lifts are a transportable, adaptable solution for construction projects with constantly changing conditions. As a result, scissor lifts are useful for: contracting for renovations and contracting in general.
• Delivery: The activities that scissor lifts excel in, such as reaching great heights and carrying big cargo that can't be lifted by hand, are common in busy shipping hubs.
• Signs in the Sky: The world is filled with signs that change frequently, from single companies to property managers with several locations. A scissor lift, whether rented or purchased, may reduce many of the concerns and problems that come with making those improvements. Some businesses that commonly change signage include workshops for mechanics, utilities for storage facilities, and maintenance of parking lots.
• Production: By swiftly and safely reaching great heights and lifting heavy items, an aerial platform can improve operating efficiencies. Scissor lifts are therefore useful for manufacturing, chemical transformations, processing of food, and brick-laying.
• Warehousing: When it comes to warehousing, every vertical and horizontal inch of space must be utilized effectively. Investing in a scissor lift for warehouses might expand the amount of space available for storage or speed up the recovery process. Similar applications can be found in the management of real estate, landscaping, and management of transportation.

Advantages of Scissor Lifts

The advantages of scissor lifts are:

Improve Productivity

Scissor lifts are highly effective for palletizing and loading tasks. They also allow for the adjustment of the work surface to the optimal height, which helps in reducing cycle times and enhancing loading efficiency.

Reduce Workplace Injuries

Heavy lifting often results in back injuries, leading to lost time. Scissor lifts provide a means to elevate goods to the necessary height, minimizing the need for repetitive lifting from pallets to tables. By placing the pallet at the correct height, scissor lifts reduce the strain of lifting both vertically and horizontally. Proper use of scissor lifts, following safety guidelines, can significantly reduce the risk of injuries related to heavy lifting.

Enhance Process Ergonomics

Scissor lifts offer adjustable heights to accommodate the preferences of different operators. They not only streamline repetitive stacking and loading tasks but also improve ergonomics. By reducing the need for bending and twisting to reach table height, scissor lifts, or lift tables, enhance vertical lifting and handling of materials and personnel. They boost productivity while minimizing the risk of on-the-job injuries. Scissor lifts are versatile, serving as pallet positioners, lifting devices, or cargo transfer tools, making tasks quicker and safer.

Access High Places and Difficult-to-Reach Areas

With some models capable of reaching up to 32 feet, scissor lifts enable employees to access hard-to-reach areas. The lift's height and load capacity are linked to its overall weight; therefore, heavier lifts can reach greater heights and handle more weight.

User-Friendly

These lifts are designed for ease of use, with straightforward controls that minimize operator fatigue. This simplicity means operators can be trained quickly, enabling the lift to be put to work in a short period.

Compact Dimensions

Scissor lifts are among the smallest aerial work platforms available. This compact size is advantageous in confined spaces, such as event venues or densely packed warehouses where access to elevated areas is limited.

Floor Area Requirement

Compared to other aerial work platforms that require more floor space, scissor lifts are relatively compact. They are easy to store, as the space needed is approximately equivalent to the size of the lift-able platform.

Customizable to Personal Liking

Scissor lifts can be customized to meet specific industry requirements. Modifications might include adding tilters to reduce the risk of falls or incorporating turntables to allow the lift to rotate while elevating the platform.

Economic

Scissors are undoubtedly the most cost-effective and versatile option among all other options. A single vertical lift may service a full warehouse. Hydraulic lifts also require nearly no energy, enhancing their efficiency.

Disadvantages of Scissor Lifts

The disadvantages of scissor lifts are:

• Lower Lift Heights &#; most scissor lifts can only reach 20 to 50 feet in height. This is far less than the majority of boom lifts.
• Due to the fact that most scissor lifts can only move vertically, there is no way to navigate them up and around obstructions.

Considerations When Choosing Scissor Lifts

The considerations when selecting scissor lifts are:

• Lift and Lower Speeds - The speed at which the lift rises and falls significantly impacts production.

• Operator Controls - The lift's controls should be simple and precise. The easier the lift is to move, the less time the operator will spend situating it.

  
  
• Dimensions - Select a lift that will fit into the available area (ceilings, doorways, etc.). Fold-down guardrails provide more versatility and a control box with remote capability. Consider whether a lift that can accommodate more than one employee is required. Some scissor lifts are only designed to accommodate one person at a time.
• The platform height plus six feet equals the working height. As a result, the actual working height will vary based on the worker's height and arm length. The operational height of some scissor lifts is included in the product number.
• Working Conditions on the Jobsite - Scissor lifts, like forklifts, have a variety of wheel options. The small wheels are appropriate if the scissor lift will be used solely indoors or on flat, smooth surfaces. Consider larger tires built for uneven terrain for outdoor applications or applications where the lift must go between buildings.

• Simple features like tilt warnings and anti-rollback help to prevent tragic tragedies. When the platform is raised, some scissor lifts automatically reduce maximum travel speed to help minimize tip-overs when the operator is in a hurry.

  
  
• Any time personnel are hoisted with tools and equipment, there is a capacity limit, which must be strictly adhered to for the safety of everyone on the job. Users should know a few facts about the project before deciding on weight capacity. Users should have a decent sense of how much weight is to be lifted before beginning. Make a list of the workers' weights, as well as the equipment and tools that will be on the scissor lift platform. In some circumstances, estimates are acceptable, but getting a precise figure should be the objective. Users must ensure that capacity of the scissor lift is not exceeded. In addition to a limit on the scissor lift's capacity, there will be a personnel limit, regardless of weight capacity even if the capacity exceeds the project's requirements. This may necessitate a change in the work plan; rather than completing multiple tasks at once, they may need to divide time to ensure that the staff limit is not surpassed. Investing more time to protect the safety of the employees is a wise decision.
• Platform Size - Scissor lift platforms are available in a variety of sizes, most of which are rectangular in shape, but square ones do exist. If the platform isn't wide enough, the extension deck, which is standard on all new modern scissor lifts, becomes quite useful. It can be extended to add at least two more feet to the platform, with up to a seven foot extension feasible in very extreme scenarios. However, any changes to the platform's dimensions will affect the scissor lift's stability. When the platform size is increased, it changes the center of gravity of the entire scissor lift, and having a load that is too heavy or uneven might cause serious complications. The center of gravity is significant since it has a direct impact on the scissor lift's performance. An unbalanced object puts a strain on the lift, so in this case, a larger platform with a higher center of gravity might be the answer.
• Project Nature - Lifting big things, such as workers, tools, or any other stuff, to great heights is a challenging task. To safely hoist the load and workers, a scissor lift is needed. If working several stories above, keep in mind that a fall could damage or even destroy property, or worse, the scissor lift itself, which is a costly piece of machinery. Other than whether or not the load is stable, consider what's inside it and where its center of gravity is. The nature of the load is also important, as some items do not handle bumps well.
• Type of Terrain - Construction sites have a wide range of terrain, so make sure the scissor lift is built to provide a high level of stability and a stable foundation on whatever surface it is working on. One of the most basic requirements for operating at heights is a stable base on working terrain. The last thing wanted for tools or equipment is for them to slide together with the occupant. It is not only the sort of terrain that the scissor lift will be on while elevating, but also the terrain that the scissor lift will travel on to reach the working location. The scissor lift is wonderful for transporting personnel and their equipment up and down straight, but there is a need to get right underneath the object that needs to be worked on and maneuver past any obstacles on the working site. If the terrain is difficult, muddy, or rocky, a rough terrain scissor lift with four-wheel drive is recommended. If there will be debris on the job site, a rough terrain scissor lift with increased ground clearance should be considered.

Common Problems Encountered With Scissor Lifts

Certain failures are inevitable with fixed elevators. If not addressed promptly, these issues can lead to considerable inconvenience for users and adversely affect job efficiency. Common problems experienced with these lifts include:

• The lifting procedure is irreversible: If the travel switch on the lifting platform is damaged, it should be replaced. If the lifting platform's control handle or the distribution box's button are damaged, repair or replace the handle or button.
• The lifting platform is either too weak or too heavy to hoist: The lifting platform's overload shall ensure that the load does not exceed the lifting platform's rated load. The voltage of the power source is insufficient. Check the power supply voltage to make sure it's within the permissible floating range when the motor is functioning with a load.
• The lifting platform drops naturally: In the valve group, look for the one-way valve. If there is dirt on the one-way valve's sealing surface, clean the one-way valve. In order to repair or replace the pressure relief valve, it must be tightly closed.

• Failure of the down valve causes the lifting platform to not drop: When the down button is pressed, check to see if the down valve has electricity. Check whether the solenoid valve spool is jammed or damaged if there is no electricity; if there is electricity, try to eliminate it. There is a problem with the descending speed control valve. If the adjustment is invalid, replace the descending speed control valve with a new one.

  
  
• The descending valve cannot be closed for one of the following reasons: The descending valve is damaged or stuck in order to clean or replace the hydraulic valve; the descending valve is damaged or stuck in order to clean or replace the hydraulic valve; the lower travel switch has been tampered with. Replace the lower travel switch with a new one. If the lifting platform does not have a lower travel switch, the time relay should be checked.

Inspection and Maintenance of Scissor Lifts

Routine daily inspections of electric scissor lifts often involve checking for visible leaks (such as oil or battery fluids) and looking for any foreign objects.

• Look for apparent damage such as dents, weld or metal splits, and other flaws.
• Examining the machine decals and signs for cleanliness and legibility.
• Inspecting the platform gate, as well as the scissor arms and centering link, to check that it closes properly.
• Hydraulic fluid levels and cleanliness are being checked.
• Ensure that all relevant manuals are located on the machine.
• Before use, a check must be done in an area free of overhead and ground-level obstructions. It's also a good idea to look over the accessories and attachments.

Checklist for General Maintenance

Below are the maintenance recommendations for scissor lifts as outlined by the Occupational Safety and Health Administration (OSHA). For complete compliance, refer to the manufacturer&#;s factory-issued manuals.

Operational Checklist

• Check the levels of all fluids, including oil, gasoline, coolant, and hydraulics. Make a thorough inspection of the machine for any leaks.
• All the wheels and tires must be in good shape. Look for worn tire treads and sidewall cracks or bubbles. Ensure that the tire pressure is at the proper PSI. Look for any structural damage on the wheels.
• Check the steering and brakes to make sure they're working properly.
• To guarantee that power isn't lost on the job, check the battery and charge level.
• Make sure all of the emergency controls are operational. Horns, gauges, lights, and backup alarms are all included.
• Ensure that all personal safety devices are in place and functioning properly. Safety harnesses, fall prevention equipment, and other items are among them.

Structural Checklist

Inspect the following areas for any indications of issues:

• Systems for air, electricity, pneumatics, and hydraulics
• Components that insulate
• Written instructions, posters, and warnings
• Locking pins and mechanical fasteners
• Wiring and cable
• Stabilizers and outriggers
• Guardrails
• Parts that are loose or missing

Maintenance of The Battery

For scissor lift owners, batteries often represent a significant and costly concern. Poorly maintained batteries can deteriorate more quickly and require earlier replacement. Therefore, regular monitoring and upkeep are crucial to ensure batteries remain fully charged and at proper water levels. Following these battery maintenance practices will help maximize their lifespan:

• Clean the battery banks to get rid of any dirt or debris. Ensure that the batteries are kept dry and clean. Surface discharge may occur otherwise, resulting in shorter working durations between charges.
• Run a test to see how much current can be pulled. To check that each battery is performing to its recommended specifications, use a high-quality digital battery tester.
• Plug in the battery charger and perform a charge test. Check to see sure all of the batteries are charging properly and replace any that aren't. It will be unnecessary to exchange a rental item or replace the battery on site if each battery is in good working order.

To facilitate easier monitoring and maintenance, an advanced battery monitoring system can be utilized. This system remotely assesses the battery charge and usage, providing diagnostic insights into both the battery and charging system. Using proprietary algorithms that continuously learn and adapt, it can forecast when maintenance tasks, such as adding water, are needed. This forecasting considers factors like usage patterns, ambient temperature, maintenance history, and other variables. The system records charge history and details on the machine controller, and a hardware module enables wireless connectivity and interaction. Combined, these components deliver real-time data including precise state-of-charge, battery depletion tracking, fluid level monitoring, and charging history. Access to this detailed battery information benefits machine owners and operators by enhancing uptime, reducing maintenance and replacement costs, and saving time through more efficient, proactive monitoring.

Conclusion

A scissor lift is a piece of mechanical equipment that promotes or unloads items by using electric energy as a source of power. It is mostly utilized in high-altitude homework-related sectors and disciplines, such as enterprises, the chemical industry, municipal administration, electric power, and transportation. Selecting the right scissor lift should consider the different types, applications, and benefits.

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