Terminology

Electric safety chain: The total of electrical security provisions which are connected in a row.

Lift: Permanently installed lifting device which serves determined levels and that has a car which due to the procedures and to its construction is apparently accessible to people. The car moves, even partly, along vertical guides with declination les than 15o to the vertical.

Lift of direct effect: Hydraulic lift whose piston or cylinder are connected directly with the car or its frame.

Lift of indirect effect: Hydraulic lift whose piston or cylinder are connected directly with the car or its frame with means of suspension (cables, chains)

Lift of light load: Permanent installed device of lifting which serves definite levels and has a car which, due to procedures and its construction, is obviously approachable to people and moves, even partly, along the vertical guides with declination less than 15o to the vertical. A car is considered not to allowed the entrance to people when its maximum dimensions are the following: a. floor surface 1,00m2 b. Depth 1,00m c. Height 1,20m. But it is allowed the height to be more than 1,20m if the car is divided with permanent divisions at places with dimensions not bigger from the above.

Drum lift: Lift with suspension chains or with steel cables which are being carried away with any other mean than abrasion.

Lifts of load with people escort: Lift with destination to carry loads and generally is being escorted by people.

Hydraulic lift: It is a lift that the needed energy for the lifting of the load is coming from an electric pump. The pump transfers hydraulic liquid to a Jack that acts directly or indirectly to the car (more than one electric motors, pumps or/ and jacks can be used). Their basic advantage is their flexibility to the installation of the machine room because the connection of the machine room with the well is only with electric wires and a flexible elastic pipe for the supply of oil to the piston while also one advantage is the evacuation in case of interruption of the power supply.

Counterweight: Is a set of weights connected with steel cables with the cabin of the lift. Those weights are approximately equal with the weight of the cabin when is full with operational capacity.

Jack: Combination of a piston and of a cylinder that create a hydraulic unit.

Lifting unit of simple energy: Lifting unit that the lift is being made to one direction with the energy of a liquid and to the other direction with the gravity impact.

Headroom: Part of the well between the highest level that is being served by the car and the roof of the well.

Non return valve: A valve that allows the free flow to one way.

Rupture valve: A valve that is designed to automatically close when the drop of pressure in the valve , which is due to the increase of the liquid flow to a predetermined way, exceeds a predetermined price.

Down acting valve: Electrically controlled valve which is installed on a hydraulic circuit in order to control the descending of the car.

One-way restrictor valve: A valve that allows the free flow to one way while it limits it to the opposite way.

Offset weight: a mass that economizes energy offsetting all or part of the car mass.

Damage: in the services of a maintenance agreement to the customer it is included the service of our correspondence in case of malfunction (damage) of the lift or of the moving stairs.

Available car surface: the surface of the car is measured 1 m above the level of the floor, ignoring the handrail which is available for the passengers or the objects during the function of the lift.

Clamping device: mechanic device which when activated it blocks the descending of the car and it maintains it still at whichever point of the route so as to limit the extent of slip.

Pawl device: mechanic device which stops the involuntary descending of the car and it keeps it stopped to stable supports.

Minimum breaking load of a rope: Multiplying the square of the nominal diameter of rope (to square millimeter) and of one factor that it depends from the manufacturing type of the rope.

Re- leveling: Function that allows the correction of the lift position after a stop during the loading and unloading, if it’s necessary and with successive movements.

Passanger: Every person who is being transported by a lift in its car.

Buffer: Elastic stop at the end of the route which can include the meaning of braking with liquids or springs (or other relevant meanings)

Traveling cable: It is a flexible cable manufactured by electric conductors and it ensures the supply between the car of every lift’s type (for people, for loads etc.) and of the devices that are placed either in the well or in the machine room.

Unlocking zone: Area over and under the level of the stop of a lift, in which must be the floor of its car in order to be allowed the unlocking of the relevant door of the well.

Electric system of avoiding displacement: A combination of precautions from dangers slipping displacements.

Car: It is the place o the lift in where the passangers are being transported and it consists of the internal lining and the doors.

Leveling: The procedure through which the accuracy of the car stop is being improved at the stop level. It is the automatic movement that the lift makes to the level of the floor that it is moving to when it is going to stop.

Pit: The part of the well which is under the floor of the lower stop that is serviced by the car.

Lift machine: The total of the instruments that ensure the start and the stop of the lift. It consists of the pump, the motor and the control valves.

Traveling cable: Flexible cable between the car and a stable point.

Railing: They are the sides on the left and on the right of the moving staircases/ corridor (on glass or stainless) where the handle is on.

Door lock: It is every type of mechanic lock which is manufactured to stop the opening of the lift door when the car isn’t on the specific floor.

Moving staircase: It’s and electrical staircase which moves automatically its staircases in order to transport the passengers.

Sling: The metallic frame on the car, the counterweight or offset weight and it is connected to the suspension means. That metallic frame can be embedded on frame of the car.

Machine room: It is the space where there are the machines which set and control the secure and correct function of the lifts and the moving staircases.

Guide rails: It is a section steel in T shape that is installed vertically in the well in order to guide and direct the route of the car of the lift and of the counterweight.

Rated speed: It is the speed of the car in meters per second and the equipment is manufactured for that speed.

Rated load: The load for which the equipment is constructed for.

Restrictor: A valve in which the openings of inlet and outlet are connected with orifice.

Pressure relief valve: Arrangement which limits the pressure at a default value by letting liquid out.

Over-speed governor: Arrangement that stops the current to the driving mechanism and, if necessary, sets to function the device handles in case that a certain speed is exceeded.

Full load pressure: Static pressure which acts on the pipes which are directly connected to the lifting unit when the car with its the rated load is stopped at its higher stop.

Automation panel: It is a device that consists of a sum of electric and electronic parts and it gives orders to the lift and it also controls its secure and correct function.

Apron: Smooth vertical part that extends to the under part of the threshold of the door of the well or of the car.

Buffer: Elastic compressed element at the end of the route that includes the braking system with liquid or spring (or other relevant means)

Laminated glass: The total of two or more layers of glass, each of them is glued with the rest of them with the use of plastic film.

‘’Shut –off’’ valve: Manual valve with two orifices that can return or obstacle the flow of the liquid to both destinations.

Safety rope: Helping rope which is tied on the car, on the counterweight or on the offset weight and it is intended to activate a safety gear in case of failure of the suspension.

Car devices: It is a total of devices that they exist and function in the car like the operating panel, the doors mechanisms, the emergency button etc. and they contribute to the function of the lift.

Safety gear: Mechanic arrangement that is used to stop and maintain the car, the counterweight and the offset weight steel on the guides in case of speed exceeding during their descending or breaking of the suspension means.

Instantaneous safety gear: A safety gear device that acts almost instantaneously on the guides.

Instantaneous safety gear with buffered effect: Safety gear which acts almost instantaneously on the guides and on which the reaction of the power on the car or on the counterweight is limited with the intervention of a depreciation system.

Progressive safety gear: A safety gear that its energy is succeeded with braking to the guiding orbits and with specials means it is ensured that the powers which act on the car, the counterweight and the offset weight can be limited to allowed limits.

Technical Features: It is the analytical description of the designs, the materials, the dimensions and all the rest elements that are demanded for the supply and installation of the lifts, the moving staircases and corridors.

Pulley room: A space where the moving motive mechanism is placed and there are also the pulleys and possibly the speed reducer and the electrical arrangements.

Hydraulic lift: A lift that the needed energy for the load lifting comes from an electric pump. The pump transmits oil to a lifting unit that acts directly or indirectly to the car ( more than one electric motors, pumps or and lifting units might be used).

(fermouit): It’s a part of the brake, made of special material, which is in contact with the drum of the break and stabilizes the lift to the level of the floor.

Well: It is the part of the building where a lift will be installed. The bottom is included in well. The construction of the well also determines the installation of the devices in relevant place.

Brake: It is an electromechanical device which blocks the lift to move when the car is stopped or when there is no current on the engine.

Handle: It is the moving part on the upper part of the railing of the moving staircases which is used by the passengers as holding handle and that is moving to the same direction with staircases.

User: A person that uses the services of a lift installation.