Electronically
Commutated Motors
IM-4055
January 2022
Installation, Operation & Maintenance Manual
Electronic commutation (EC) is the latest motor technology to be
used in direct drive fans. Also known in the industry as Brush Free
or Brushless DC, the EC motors utilize an electronic circuit board to
115V or 208/230V AC single phase power or 208/230V or 460 three
phase power, which is converted to DC power within the motor’s
speed control range and a variety of speed control options from
which to choose.
This manual has been prepared to guide the users of electronically commutated motors in the proper installation, operation
For safe installation, startup
applicable safety codes are strictly adhered to.
given here are general in nature. Additional product and engineering information is available at www.tcf.com.
REVIEW AMCA BULLETIN 410 PRIOR TO INSTALLATION
Table of Contents
Safety & Hazard Warnings ...........................................................................................................................................................................2
Shipping & Receiving ....................................................................................................................................................................................2
Handling ....................................................................................................................................................................................................... 3
Unit Storage ................................................................................................................................................................................................. 4
General Installation ...................................................................................................................................................................................... 4
Electrical Connection ................................................................................................................................................................................... 5
Speed Control Options: ODP & TENV Motors .......................................................................................................................................
Speed Control Options: TEFC Motors ...................................................................................................................................................
Speed Control Options: OP Motors ...........................................................................................................................................................13
Maintenance ...............................................................................................................................................................................................14
Troubleshooting ..........................................................................................................................................................................................14
Fan Maintenance Log .................................................................................................................................................................................15
Refer to the safety section(s) in this manual prior to installing or servicing the fan. The most current version of this installation and
maintenance manual can be found on our website at www.tcf.com/resources/im-manuals.
SAFETY NOTICE
Model DCRD
with EC motor
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