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Lift Technology

Lift Technology

Lift Technology: Plant Supervision

TUV Austria carries out the inspection within the scope of the legal requirements

  • Lifts Lifting platforms
  • Escalators and moving sidewalks
  • Devices to cruise facades
  • Lifts for handicapped

After successful design approval and final inspection we administrate IT -supported your deadlines for the compliance of the inspection dates. So you will not miss any time limit.

Beside the plant referring tests and inspections we train and examine lift attendants as well as the stuff for emergency rescue of trapped people from lift cabins.

We further offer

  • Expert opinions on court order
  • Private expert opinions
  • Analyses of the actual state in order to collect the condition of the plant
  • Calculation of the transport capacity in respect to the number of persons to be carried (necessary characteristic and number of lifts)
  • Expert opinions in regard to style reconstruction of plants worthy for conservation
  • Accompanying construction supervision from the planning to the completion of a project
  • Test management
TÜV AUSTRIA records defects in elevators: Traction sheave with main cables on top in the machine room

The main cable shows wire breaks, the strength to bear a fully loaded lift car is no longer assured.

As a result, the main cables to which the lift is attached may tear.

If this would be the case, the lift car would drop a little and be braked by the safety gear in the shaft, as soon as the lift builds up overspeed.

TÜV AUSTRIA records defects in elevators: One of the two lower lift car guides

The lift car always travels along its defined path through four of these guide parts, without touching magnets, sensors, or door locks in the shaft during the trip.

If just one guide is no longer available as in this case, this can lead to serious damage to the lift.

TÜV AUSTRIA records defects in elevators: Lift car roof

According to standards, the lift car roof is to be designed to be safe to walk on.

As can be seen from the bent cover, this is no longer the case for this lift system.

Even worse is the layout of the cabling, which could cause a person to stumble, resulting in a fall down the lift shaft in the worst case Scenario.

TÜV AUSTRIA records defects in elevators: Rail track of the counterweight looking from top to bottom in the lift shaft

You can see here that the track is distorted by loose screws or by the natural lowering of the building. In the worst case, the deformation could lead to the counterweight jumping out of the guide and leaving a weight of approx. 1 ton hanging in the shaft, which could cause a lot of damage, right through to severe injuries.

A collision of the counterweight with the lift car could lead to a lot of damage, right through to severe injuries.

TÜV AUSTRIA records defects in elevators: Speed limitation device

In the event of overspeed (right through to falling), the speed limitation device triggers the catch gear and the lift car is stopped in the shaft. This speed limitation device shows on the operating groove (the right-hand side groove without cable) an impression of the steel cable that is normally there. Normally, the cable touches the branches of the cable groove only laterally. Here, the cable is already touching the bottom of the cable groove, which could lead to an incorrect triggering speed, and, in case of deployment, to delayed triggering (= higher speeds): personal injury of the people in the lift are the result.

The cable impressions in the operating groove cause a lot of friction due to the incorrect surface quality, which could lead to damage to the catch rods in the event of triggering. (Note: The triggered speed limitation device of the catch gear is actuated by the catch rods, which should prevent a fall.)

TÜV AUSTRIA records defects in elevators: Access points

Access points in buildings are often dangerous and do not comply with the legal and/or standardized specifications.

Here, people could fall with the most severe consequences, which was pointed out as part of the expert lift inspector's duty to inform.

TÜV AUSTRIA records defects in elevators: Corrosion on load-bearing parts

Corrosion on load-bearing components of lift parts could have unimaginable consequences.

Even if the rusted lift car shell holds up in normal operation, this does not mean that the parts would not tear and fall apart in the event of an increased load, e.g., trip to the impact buffer, use of the safety catch, ...

TÜV AUSTRIA records defects in elevators: Oil-proof coating of a shaft pit

For hydraulic lifts, the floors of the power unit room and shaft pit must be provided with an oil-proof coat, so that in case of oil escaping, the oil remains in an oil-proof pan and does not leak into the foundation of the building and possibly also into the groundwater.

Damage to this protective coating may lead to an ecological impact on the Environment.

TÜV AUSTRIA records defects in elevators: Shaft head ventilation

A misplaced shaft head fan results in poor ventilation of the lift shaft and also a poor atmosphere in the lift car.

And in the case of fire smoke gases cannot be directed out of the shaft. Many lifts are not connected to life-saving fire detection systems and do not evacuate according to ÖNORM EN 81-73:2005, which means that people who flee the fire by lift could suffer smoke inhalation, which can sometimes have fatal consequences.

TÜV AUSTRIA records defects in elevators: Power unit / emergency rescue

Shows a power unit with attached device for emergency rescue of trapped people.

If, however, these parts are not correctly attached (as in this case), a planned emergency rescue of trapped people, who are often very scared, can be significantly delayed.

TÜV AUSTRIA records defects in elevators: Lift car / shaft door mesh

Shows the area between an old lift car door and the shaft door mesh, which was subsequently added. Here, the protection gap is incorrect after installation. In 2002, a fatal accident with a small child occurred in Vienna due to a gap being to large.

TÜV AUSTRIA records defects in elevators: Main cable in the cable grooves of the traction sheave

If the tension is not the same for all load-bearing cables, the cable are unevenly loaded and therefore unevenly used.

You can see between the sheet plate and the left main cable that this rope already sits deeper in the cable groove.

Incorrect cable tension causes quicker wear and higher operating costs for the operator of the lift System.

TÜV AUSTRIA records defects in elevators: Shaft safety fence with perforated plate

When the attachment elements of shaft protection elements are no longer up to par (e.g., due to corrosion), this could lead to people falling.

TÜV AUSTRIA records defects in elevators: Power unit with oil loss

Possible consequences of a power unit with oil loss are poor lubrication of the drives and thus drive damage, and of course also ecological consequences if the oil leaks into the Environment.

TÜV AUSTRIA records defects in elevators: Shaft pit

An oily shaft pit means that water was previously in the shaft pit too. Often the foundations of buildings are not 100% water-tight and a high groundwater table can push water into the shaft pit.

Water damage reduces the value of the lift system and, as a consequence, increases the repair costs and the likelihood of malfunctions.

Oil can leak through the openings of the shaft pit into the groundwater.

Numerous measurements are made with precisely calibrated devices, for example of the closing forces of automatic doors, trigger speeds of speed limitation devices, or the effectiveness of electrical protective measures.

High level of qualification, continuous training, integrated lift inspection

The extensive expertise of lift inspectors requires a high degree of knowledge. TÜV AUSTRIA lift inspectors are HTL (secondary technical school) or university graduates and have at least 2 or 3 years of practical training in the area of lift construction and lift inspection, which will continue to be developed to the current state of the art with mandatory ongoing training. (Note: University graduates can obtain state authorization already after 2 years)

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