Alfa’s Hydraulic and Traction lifts is of our high performance product range designed to meet the needs of the most demanding customer. Our products can be distinguished from the competition by the premium ride quality, excellent reliability, high performance, and a wide variety of finishes and specification’s which can be customized to any requirement, Which includes durable but aesthetically pleasing finishes which can meet and exceed the requirements of any building. Furthermore offering various types of doors, drive systems, control functions which when all combined provide an exceptional traveling experience for each passenger.
We at Alfa Elevators, take Pride in being named as one of the leading manufactures and specialists in Hydraulic Elevators, as a Hydraulic Elevator promises, among many other advantages, an overall trouble free operation which directly reflects on your maintenance cost being respectively lower, asmooth operating experience & a much lower consumption of power. Hydraulic elevators are powered by a piston that travels inside a cylinder. An electric motor pumps hydraulic oil into the cylinder to move the piston. The piston smoothly lifts the elevator cab. Electrical valves control the release of the oil for a gentle descent.
|Feature/function||Hydraulic lifts||MRL / Traction (with power unit in the shaft)|
|Shaft||The shaft is material-saving with minimum one reinforced concrete wall. Main forces are concentrated on the pit bottom. The shaft dilatation is not required even in apartment buildings. Small dimensions in relation to the car.||The shaft is massive, material-consuming, holds (the upper engine room in case of traditional lifts), a drive unit, a counterweight and a car. In case of neighborhood of apartments, the shaft dilatation is recommended. Big dimensions in relation to the car.|
|Construction||Simple. Small number of parts - including rotating parts. No counterweight. Low lift weight: 40-60% lower than lifts without engine rooms.||Complicated construction. Many parts - including rotating parts: delivery wheels, bearings. Big length of repeatedly bent carrying ropes. The lift high weight in relation to the load.|
|Purchase cost||Lower by approx. 20-30% for a 2-5 stops lift.||Relatively high for lower travel heights.|
|Installation / operation||Exceptionally quick, safe, uncomplicated and cheap installation. Efficient repair and replacement of components.||Complicated installation requiring highly qualified personnel. It is usually 2 times longer than in case of hydraulic lifts. Complicated repair and replacement of main units and ropes.|
|Operating costs||Low maintenance and spare part costs.||High maintenance costs and very high costs of spare parts.|
|Speed||Usually 0,63 m/s.||High, usually 1 m/s and higher.|
|Lift durability||Long life, approx. 2 times longer.||Moderately long.|
|Connection of power||Long life, approx. 2 times longer.||Moderately long.|
|Connection of power||Approx. 2 times higher.||Several kilowatts.|
|Electric energy consumption||Comparable or lower. A hydraulic lift goes down with switched off main engine. During the lift stop the energy is consumed by the car main lighting.||High energy is needed to move the counterweight in case of the car unbalancing (empty or fully loaded). During the lift stop the energy is consumed by a frequency converter (so called inverter) and the car lighting.|
|Reaction to power failure||Load < 2.000 kg
Travel to the lowest stop by gravity and door opening. A low-capacity battery required e.g. 7Ah. Battery which supports the voltage in the electronic control unit is sufficient.
Load 2.000 – 12.500 kg
Travel to the lowest stop by gravity is supported by the 7Ah battery. To open large and heavy doors an UPS of 600 - 1000 VA is sufficient.
Easy release of passengers in case of the emergency power system failure.
|Load < 2.500 kg
Travel to the nearest stop. Required a UPS device of 1000 - 3000 VA power. Monthly checking of voltage level highly recommended.
Load 3.000 – 5.000 kg
Required a battery power station or a motor power generator to move cabin and open door.
Complicated, difficult and time-consuming release of passengers in case of the emergency power system failure.
|Safety||High. No massive units above the car. The machine room is usually separated, far from the lift working units.||Medium. Higher risk for personnel during installation, repairs and maintenance. Ground tectonic motions or earthquakes can cause the construction fall down due to the massive elements located in the head room (traction machine or counterweight). Such cases are reported in the seismic areas. A specially protected lift construction is required.|
|Noise emission||The shaft does not usually contain drive units. Noise is emitted in a closed engine room far from the rooms in which people stay.||The power unit and control unit situated in the shaft makes the noise emission going easier through the building. It can be particularly bothersome in apartment buildings because not all drive units are silent.|
|Ecology||Environment friendly. Exceptionally material-saving shafts and the lift low weight as well as small number of parts - means lower energy needed for production. Hydraulic fluid undergoes 100% recycling after 5-10 years of operation.||The massive shafts and units: a massive traction machine and counterweight, long ropes, many parts - means higher energy needed for production. In drives are frequently used so called permanent magnets that require much energy during raw material exploration and in the production process what has a very negative environmental influence.|