Troubleshooting, Service record, Trouble shooting – Dings Dynamics Group 90 Series End Mount - 450 lb-ft NEMA 4 User Manual

Page 8

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TROUBLE SHOOTING

A. IF BRAKE DOES NOT RELEASE:

1.

Check brake visually for broken or damaged parts.

2.

Check for broken leadwire or bad electrical connection.

3.

Check for correct voltage. Line voltage must correspond to the
voltage for which the brake coils are connected. If the line
voltage is more than 10% below the voltage for which the
brake coils are connected, the magnet will not pull in, causing
the coils to burn out within minutes. If the line voltage is more
than 10% above the voltage for which the brake coils are
connected, the coils will overheat and burn out.

4.

Check for burned-out coils (coils may be charred or burned).

5.

Check for excessive magnet gap. (See WEAR ADJUSTMENT.)

6.

Check for failure of power supply to brake.

B. IF BRAKE DOES NOT STOP:

1.

Check brake visually for broken or damaged parts.

2.

Make certain hub has not shifted position on the motor shaft
and that all rotating discs are fully engaged on the hub.

3.

Check that the manual release is in the normal position.

C.IF BRAKE CHATTERS OR HUMS:

1.

See that magnet faces are clean. To remove dirt, insert a clean
sheet of paper between magnet faces and energize brake.
Move paper around between faces to dislodge dirt, then
remove paper.

2.

Check for low voltage. Magnet will not pull in, and coils will
burn out if line voltage is beyond 10% below the voltage the
brake coils are connected for.

3.

See that magnet faces are parallel within tolerance (+.005
between the four corners of the magnet) Loud humming noise
may be subsided. See INSTALLATION (Magnet Adjustment)
for proper procedure.

D. IF MANUAL RELEASE DOES NOT WORK:

1.

Check for broken or damaged parts.

2.

Check to see if manual release is set properly. See MANUAL
RELEASE ADJUSTMENT.

NOTE: Due to the size of the discs, a slight drag is common when
the manual release is properly set (5-7 lb. ft.).

4740 WEST ELECTRIC AVENUE MILWAUKEE, WI 53219 PHONE 414/672-7830 FAX 414/672-5354

www. dingsco.com

DATE

MAINTENANCE PERFORMED

COMPONENTS REQUIRED

SERVICE RECORD

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