Flow Restrictor
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Flow Restrictor
Car Lift Safety Features
There's no one way to make a car lift or truck lift safer for the operator. Manufacturers of high-quality automotive lifting products are always looking for better, more secure lifting methods. As a result, many excellent automotive lift safety features are now offered to the consumer. Here are just a few examples of the great technological strides that reputable ALI / ETL certification partners have developed to keep you and your employees safe.
Two-post Car Lift Automatic Arm Restraints
Because the various car lifting solution designs can be extremely different from each other, it makes sense that some safety features are specific to only one kind of car lift. Two-post car lifts employ swing arm assemblies that allow the operator to change the arm configuration to suit a wide range of vehicles. It is important that swing arm lifts employ restraint devices to prevent arms from shifting or dislodging after a car or truck is already mounted and raised. Higher-quality two-post car lifts will feature this safety critical element; typically a gear mechanism that automatically secures the arms into place whenever the lift begins to rise. The automatic gear arm restraints will only disengage again when the lift is in a safe, lowered state.
Four-Post Car Lift Anti-Sway Blocks
Four-post car lifts are principally suspension lifts that rely on their columns to contain the lifting structure via cables or chains, while simultaneously bearing the load equally between them. Since the four-post car lift is not a rigid structure, it was once common for lifts to sway slightly during raising or lowering operations. Anti-sway blocks are one method of minimizing sway and maintaining proper spacing. This is especially important to ensure that safety locks are always engaged and that each post or column is holding 1/4th of the overall weight.
Four-Post Car Lift Runway Ramps and Chocks
Be sure your auto lift is equipped with manual wheel chocks as the primary means to restrain vehicles from inadvertently rolling off either end of the runways. Automatic stops on the approach end and fixed stops up front should be provided on runway lifts as a secondary means to restraint.
Hydraulic Flow Restrictor
Hydraulic car lifts that are designed with safety in mind use specialized hydraulic flow restrictors or velocity fuses integrated into the hydraulic cylinders or hydraulic circuit to control sudden, rapid decent in the event of a hydraulic component failure. These essential safety devices can dramatically reduce or stop downward travel in a free-fall situation due to a hydraulic system failure other than the cylinders themselves.
Design That Address and Eliminates Pinch Points
Pinch points are not just mere annoyances like the name might suggest. Without supervision and careful operation, pinch points can result in damaged property and injury. Reputable manufacturers employ engineers to help identify potential pinch points for hoses and limbs, and then they remove them from the design of an auto lift.
Automatic Safety Locks
These powerful load-holding devices automatically engage and lock the lift structure as the car lift raises, preventing sudden free fall in the unlikely event of a suspension component failure. Typically, after the lift is raised to the required working height, operators are instructed to lower the lift until it is resting safely on the locks to minimize wear on suspension components. Once the locks are engaged, the car lift has to be raised slightly in order to release the safety locks. Load-holding devices should always require an independent and positive action for release, and they should always engage and reset automatically each time the lift is raised.
Slack Cable or Slack Chain Device Safety Device
As a redundant safety precaution, all professional-grade car lifts that employ either cable or chain suspension methods should incorporate a slack cable or chain device. These slack cables act as an automatic brake for the supported structure if a suspension component breaks or slackens.
Safe Systems and Procedures
When searching for a car lift, always ensure the manufacturer has a written quality assurance system of policies and procedures that are implemented and managed by quality control personnel. Safety policies and procedures should embrace safety specific subjects like organization, functions, duties and authority; policy and procedure publication, change control and record keeping; engineering drawing and specification publication, change control and record keeping; manufacturing process conformance determination, change control and record keeping; raw material and purchased part conformance determination and record keeping; component and end item conformance testing and record keeping; calibration and record keeping and traceability to the National Institute of Standards and Technology (NIST), or other national standards, for all gauges, measuring devices, tools and instruments that affect the quality of the final product; and, control and disposition of nonconforming material.
Specialized Lifting Pads for Different Types of Vehicles
Make sure you always have the right tool for every lifting job. Vans and trucks require different adapters than cars and motorcycles. The dealer or manufacturer should have a variety of options and accessories to help customize your automotive lift to fit your specific auto lifting needs. If they don't, take it as a sign that their car lifting products might lack the proper support.
Proper Use and Safety Instructions
Always be sure that your car lift is supplied with operation, inspection, service and maintenance instructions that include specifications of the lift, lift rated load capacity, significant lift and bay dimensions, power requirements (compressed air and/or electrical), foundation and floor structural requirements. Car lift installation instructions should be clear with graphics illustrating full step-by-step assembly, exploded drawings with part numbers and descriptions, component packing list, site requirements, mounting and anchoring instructions, recommended clearance around and above lift, plan and elevation details of auto lift layout, final pre-check procedure for assembled lift, operational test & inspection and maintenance instructions.
Labeling
To raise safety awareness for all operators and bystanders, auto lifts should always include pertinent warning labels, as well as raising and lowering instructions. These labels shall be located at the point of hazard so that they will be plainly visible by the operator when he or she is in position to raise or lower the car lift's load.
ALI / ETL Certification
Few of us are able to determine the strength, quality and safety of a car lift just by looking at it. That's why the Automotive Lift Institute's ETL certification is so important to business owners and private users who want to protect employees, property and themselves from potential accidents.
Car lift companies that focus on safety have a close relationship with ALI, ETL, ANSI, UL, CE, TUV, and other global certification authorities and regularly undergo intense third-party testing conducted by nationally recognized testing laboratories. Metallurgy, tensile strengths, mechanical engineering, manufacturing quality and electrical compliance are just a few of the things that these testing laboratories investigate rigorously for every car lift or truck lift that applies for certification. Only when an auto lift demonstrates consistently high marks in each category does it receive the ALI / ETL badge of approval or other renowned certifications.
About the Author
Brian Davis is an expert on Auto Repair Equipment and has written numerous articles on the Auto Repair Equipment industry. See more about Brian's products here: http://www.bestbuyautoequipment.com
question about air restrictor on 91 honda civic?
I added a k&N air filter to my 91 civic and someone told me that their is a restrictor plate that i can take off for more air to flow.. I want to know if there is and i take it out, will it hurt my motor in anyway? Is it better to take it out or to leave it in?
I have no idea about your Civic restricter plate.
That being said, most stock intake tracts are designed to muffle or tune out intake noise (roars, moans, wails, etc) at the expense of air flow. Removing this type of restriction or or tuned baffle will usually free up airflow at the expense of noise. I would look your intake tract (ducting, plenums, etc) and see if there is anything restrictive. It may be a simple matter of cutting some plastic or removing a plate.
And you won't do any damage to the motor.
Simple Flow Restrictor