Proviso Systems Ltd

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Hofmann AB 9000 PRO - Active Ring Balancer

Hofmann AB9000Our balancing systems have been installed in a number of industries including:

  1. Cement
  2. Chemical
  3. Foundries
  4. Glass
  5. Paper
  6. Steel
  7. Utilities
  8. Waste Water

The use of our balancing systems has helped to improve our customer's reliability, production capability and quality, while reducing maintenance and manufacturing costs.

Features & Benefits

  1. Improved Production Uptime
  2. Reduces unplanned downtime/emergencies due to balance related vibration problems
  3. Extends planned maintenance intervals
  4. Reduces start-up time
  5. Optimisation of Equipment Life
  6. Compensates for variable balance conditions: RPM, thermal changes, and material build-up
  7. Eliminates multiple starts by easing equipment through criticals during start-up and shutdown
  8. Reduces wear-and-tear on equipment
  9. Maximise Asset Availability
  10. Continuous monitoring/diagnostics
  11. Proactive analysis of potential balance problems
  12. Remote analysis capabilities


Fan Product Information

Active Ring Balancer
Balancers for Centrifugal Induced Draft/Forced Draft and Axial-Van Fans
Balancing systems are comprised of sensors, a controller and one or more balancers that make trim balance corrections to reduce fan vibration while the fan is running, at any operating speed or load. The system is able to compensate for variable balance conditions due to material build-up, temperature variations and changing process conditions. Balance corrections are made automatically or manually, minimising vibration caused by unbalance in seconds.


Features & Benefits

Cost Effective – reduces downtime and increases productivity. Trim balances equipment while operating, without a forced shutdown. Eliminates multiple starts and stops necessary for manual balance correction. Provides rapid payback on balancing system and installation cost.

Efficient – optimizes equipment life (bearings, motors, seals, etc.).

Adaptable – fits with existing condition monitoring systems. Operates in either automatic or manual modes.

Versatile – maximizes asset availability.

Reliable – performs continuous monitoring and diagnostics, on-site or remote. Eliminates unscheduled maintenance.

balancer fan types

Fail-Safe – maintains last correction, even if power is lost.

How the Balancing System Works

One or more balancers are permanently fixed on the rotating shaft, and each balancer is surrounded by a stationary coil used to transmit power into the balancer(s). Sensors monitor vibration levels and transmit information to the controller. When vibration levels exceed a preset high-limit, the controller signals the coil(s) to pulse power to the balancer(s) to make a balance correction. The correction is made by the repositioning of two counterweighted rotors relative to each other, located inside the rotating balancer(s). Vibration levels are reduced as the rotors are moved, until the controller senses that vibration levels have dropped below a preset low-limit. The rotors are repositioned in seconds to complete the trim balance correction, while the fan continues operating without a forced shutdown.

Balancer Benefits

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Wordwide perspectives

Through our wide ranging partnerships and distributor agreements we are able to cater to all markets and customer requirements.