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Hydraulik

Hydraulik

 

HI Hydraulic Pump

HYDRAULIC PUMP UNIT WITH INVERTER (VVVF)

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
 TitleCategoryModified DateSize 
Hydraulic pump unit with Inverter produktbladProduktblad4/27/20122.53 MBDownload

 

HE Hydraulic Pump

Pump units for passenger lifts using electronic valves, featuring a very low noise and a very high level of comfort during operation. They offer a higher efficiency and an energy saving of up to 30% when compared to traditional pump units installed on short travel systems.
  • Compact structure
  • Pump placement designed to optimise quantity of oil used
  • Pump mounted on dumpers
  • The electronic valve, by modulating flows and timings, transfers less heat to oil during operation: significant energy saving
  • The electronic valve compensates oil viscosity variations due to changes in temperature: smooth and constant performance is guaranteed
  • Easy maintenance of the valve section; the valve is ideal for high traffic installations
  • Very accurate control of leveling to floor
  • External interception valve with integrated filter can be moved to ease connection from each side: layout design becomes very simple
  • Hand pump for emergency upwards travel is integrated in the valve group, in an easily accessible position. A remotely controlled version is also available
  • Can be placed in a cabinet, with connection on the left or on the right, both in the from side or in the back side
  • Wide range of models which covers any application (from 55 to 600 l/min., from 4.8 to 58.8 kW)
  • Available in an optional version using a heat resistant drive
  • Extended range of models can be supplied upon specific request
 TitleCategoryModified DateSize 
Pump units for passenger lifts produktbladProduktblad4/27/201270.37 KBDownload

 

Indirect cylinders

Maximum flexibility Cylinders for indirect 2:1 or 4:1 lift applications, which offer the maximum flexibility in the field of hydraulic driven lifts. A very simple structure accounts for a very high operational reliability. Supplied with centring dowel upon request.
  • A chrome finishing for the rod is available as option to protect it from wear and tear and oxidation
  • Produced exclusively using non-welded rod tube
  • Also available in a version with double protection layer
  • Tested for use with environment-friendly biodegradable oils
  • Available in “slim” version using a reduced quantity of oil
  • Execution with 1 or 2 seams
  • Rod protection for travels longer than 8 m in seamless execution
  • Overspeed safety valve certified by TUV according to EN81.2 standards
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