Since 1977 Wittur supplies the lift industry with versatile and high-quality doors.
Since 1977 Wittur has been providing the lift industry with versatile and high-quality doors. More than 30 years later Wittur is the leading company in the lift doors segment, with state-of-the-art technical solutions and unparalleled product range. Regardless of whatever your lift requires - a round door with panoramic panels rather than a straight or a folding one - Wittur can supply the best solution for your needs.
Research for innovative solutions and rigid control of product quality are key features of Wittur Safeties. 
Wittur offers a wide range of car and counterweight frames. Modularly conceived, these components are very flexible in terms of rated load, height and width. The wide range of accessories includes safety gears, suspension pulleys, compensation chain and travelling cable hangers, allowing configurations suitable for different shaft layouts, lift designs and rated speeds. Wittur can also supply special frames for tailored projects.
Research for innovative solutions and rigid product quality control are key features of Wittur Safeties.
According to EN81-1/2 A3 and EN81-21 A1 (new lifts in existing buildings), new lifts installed after January 1st 2012 must be equipped with a system to prevent a car moving away from the floor with the landing door not in the locked position and the car door not in the closed position.
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Since 1977 Wittur supplies the lift industry with versatile and high-quality doors.
Since 1977 Wittur supplies the lift industry with versatile and high-quality doors.HYDRAULIC PUMP UNIT WITH INVERTER (VVVF)
Hi Hydraulic Pump
Wittur Center of competence for hydraulics presents pump unit HI.
Ideal for new installations and modernizations (SNEL), Wittur HI secures a
reduction of electricity consuption up to 48.8% compared to traditional
pump units.
Thanks to highly innovative content, the HI pump unit is the best in class
for comfort and energy save. Designed, tested and garanteed by Wittur,
pump unit HI is easy to be installed; thanks to integrated hand terminal
the setting of parameters is fast and simple.
- New block HI with integrated hand pump
- Up and Down travel managed by inverter
- Open loop system without encoder
- Up to 1 m/s speed
- Floor approach is precise not depending on the load
- Exclusive software
- Inspection and re-livelling speed are adjustable
- Intermediate floors with specific speed
- Ready for HDU: the new device in conformity with EN81-2:1998+a3
- Available with pumps from 55 to 380 l/min and motors from 3.3 to 36.8 kW
Technical information
| Pump unit technology | U. | HM | HE | HI nominal fixed speed |
HI nominal fixed power |
|
| Lift rated load | kg | 330 | ||||
| Single travel' s lenght | m | 8 | ||||
| Cylinder rod diameter | mm | 90 | ||||
| Pump unit oil tank volume | l | 110 | ||||
| Pump unit oil delivery | l/min | 125 | ||||
| Pump unit motor power | kW | 5.9 | 5.9 | 5.9 | 4.7 | |
| Pump unit plate Cos φ | 0.8 | 0.8 | 0.98 | 0.98 | ||
| Starting current | A | 90 | 89 | 17 | 14 | |
| Pump unit oil cooler optional | Not installed | |||||
| Consecutive up&down travels | N° | <110 | <140 | <180 | >200 | |
|
Rated current
|
Empty | A | 17 | 17.3 | 17 | 14 |
| Full | A | 23 | 22 | 23 | 18 | |
| Uptravel speed |
Empty | m/s | 0.6 | 0.63 | 0.63 | 0.63 |
| Full | m/s | 0.6 | 0.62 | 0.62 | 0.5* | |
| Downtravel speed |
Empty | m/s | 0.63 | 0.63 | 0.63 | 0.63 |
| Full | m/s | 0.63 | 0.63 | 0.63 | 0.63 | |
| Noise |
Up | dB | 58 | 65 | 58 | 58 |
| Down | dB | 58 | 67 | 56 | 56 | |
| Travel energy (100 travels) | kWh | 6 | 5.4 | 4.2 | 4.2 | |
* Uptravel speed: 1 person 0.52 m/s; 2 people 0.50 m/s; 3 people 0.45 m/s; 4 people 0.40 m/s;
Contact
Martin Tang,
Key account manager for KONE
Lucifer Li,
Key account manager for Schindler
Jeff Bian,
Key account manager for OTIS
Contact
