Doppelmayr Issues Lift Energy Saving Tips

High energy prices are causing a difficult situation worldwide. A checklist will enable you to reduce the power consumption of your ropeway installation without jeopardizing its operational safety and reliability.

Speed

Reducing speed offers the greatest potential for saving energy. At 50 percent rope speed, energy consumption is roughly halved. Important: Depending on the specific installation, a minimum drive speed may be mandatory to prevent damage to the gear unit.

Processes

• Peak loads. At the start of operations, ramp up your installations in stages in order to avoid expensive peak loads.
• Maintenance. Ensure optimal V-belt tensioning and air pressure in tires in order to minimize slippage and therefore reduce system interventions for carrier spacing and torque support.
• Loading conveyor. On days with lower capacity utilization and reduced rope speed, you can dispense with the loading conveyor. Cover it with snow for this purpose
• Cleanliness. Keep the cooling ribs on the drive motor clean so that the motor fan can work less.
• Heating & Ventilation. Ventilation of low-voltage room. Use windows and access doors for fresh air instead of the ventilation system. Make sure that any access restrictions are nonetheless maintained.
• Ropeway ventilation. Open top-hung and sliding windows in the station enclosure to utilize natural convection. This will enable you to avoid the early operation of forced ventilation.
• Seat heating. The HMI gives you the option of reducing the heating output when weather conditions and passenger volumes allow.
• Gutter heating. When the weather is dry, you can dispense with gutter heating.
• Conveyor pit heating. Ensure requirements-based heating in dry weather.

The measures listed here are to be understood as suggestions. They are to be implemented at the responsibility of the lift operator in light of the current, specific conditions on site and in compliance with any local regulations.

The comparison of adjusting rope speed vs. adjusting carrier numbers shows that speed has a significantly higher influence on energy consumption.