Dual Speed Axial Fans

High airflow when required. Lower speed when demand drops.

Imagine the flexibility of being able to run a fan at lower speeds to reduce power consumption when airflow requirements are lower, yet still maintaining the option to run at full speed for maximum performance – all without requiring the capital and operating expense associated with a typical variable speed drive.

Clemcorp have developed a ‘two motors in one’ solution with a range of dual speed axial fans designed to run at either asynchronous 4-pole 1485RPM or 6-Pole 985 RPM speeds. Simple, Rugged and Built for Mining dual speed fans have the potential to deliver massive power savings for your operation.

Dual Speed Axial Fans Product Guide
Product specifications
Description No of Stages Fan Speed Kw Rating Max Flow Rate Max Pressure
CC1400Mk4 Axial Fan 1 1485RPM / 985RPM 90kW / 30kW 45m3/s / 30m3/s 2500Pa / 1000Pa
CC1400Mk4 Axial Fan 2 1485RPM / 985RPM 2 × 90kW / 2 × 30kW 45m3/s / 30m3/s 4900Pa / 2150Pa
CC1254Mk3 Axial Fan 1 1485RPM / 985RPM 55kW / 18kW 32m3/s / 22m3/s 1700Pa / 750Pa
CC1254Mk3 Axial Fan 2 1485RPM / 985RPM 2 × 55kW / 2 × 18kW 34m3/s / 23m3/s 4500Pa / 2000Pa
Dual Speed Fan Running Costs & Savings
Description Ratio Running Speed Annual Running Costs @ 0.35 / kWh Savings per annum
CC1400MK4 (90kW / 30kW) 100% High $275,940* N/A
50% High / 50% Low $183,960* $91,980†
30% High / 70% Low $147,168* $128,722†

*Based on 24/7 Operation 365 Days Per Year.
†Saving P/A based on comparsion of running speed at 100% High.

Key points

  • Dual-speed axial fans allow sites to operate at either high or low speed to match airflow demand, with a 33% reduction in fan speed delivering up to a 70% reduction in power consumption.
  • Designed for mines seeking simple practical fan control with low risk proven technology.
  • Allows control of fan speed and air flow without the use of a VSD.
  • Suitable for single or multi-stage configurations.
  • Can be paired with custom PLC / HMI starter panels.
  • Designed for local or remote operation.
  • Supports staged VOD implementation.

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