8’ - 24’ POWERFOILPLUS™, POWERFOIL™, & WICKERBILL FANS
WWW.BIGASSFANS.COM ©2010 DELTA T CORP. DBA BIG ASS FAN ALL RIGHTS RESERVED
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WWW.BIGASSFANS.COM ©2010 DELTA T CORP. DBA BIG ASS FAN ALL RIGHTS RESERVED
8’ - 24’ POWERFOILPLUS™, POWERFOIL™, & WICKERBILL FANS
(view from under fan)
Start-up Procedures For KBDA Controllers
WARNING: The following start-up procedures apply to standard model controllers. Procedures may vary depending on
installation options and system automation. The installer should verify proper wiring, terminations, and proper voltage supply
before proceeding. High voltage gloves and arc flash protection are recommended.
1. Verify proper AC supply voltage at terminals L1, L2, L3 of the controller disconnect for three phase controllers; verify voltage at
terminals L1, L2 of the controller disconnect for single phase controllers. Refer to “KB Controller Specifications and Environmental
Ratings” (p. 65) for acceptable voltage ranges.
2. Replace the cover onto the fan controller. Verify that the supplied cover mounted speed potentiometer is set to zero (0).
3. The VFD’s display LEDs should be lit at this point. If the LEDs are not lit, re-verify proper AC supply voltage at disconnect
terminals. If necessary, refer to “Troubleshooting KBDA Controllers” (p. 67).
4. With speed potentiometer (1) set to minimum or zero (0), press the “RUN/STOP” button
RUN
STOP
.
Fan should accelerate from 0 to 10 Hz as indicated on the display. Verify correct fan rotation at this time. The fan should rotate
counter-clockwise when viewed from the floor. If the fan’s rotation is incorrect, press the direction control button
.
5. Increase speed from minimum/zero to full scale (cover mounted speed potentiometer to 10). Fan should accelerate smoothly from
10 Hz to 60 Hz (maximum fan speed. If the controller trips on any faults, refer to “Troubleshooting KBDA Controllers” (p. 67).
6. Monitor fan operation for 30 to 60 minutes in order to verify satisfactory operation. If the fan system is going to suffer from any
condition conducive of a fault, it will happen during this time frame, with the exception of an unknown power condition (refer to pp.
58, 67).
