Dings Dynamics Group 60 Series Coupler NEMA 4 - Manual (Page 9)

SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION
Brake does not release 1. Broken or damaged parts 1. Replace.
2. Wrong voltage 2. Check for correct voltage. Voltage
must correspond to that listed on
brake nameplate. If the voltage is
more than10% below the nameplate
voltage, the magnet may not pull in.
3. Burned out coil 3. Replace magnet assembly (25A).
4. Incorrect wiring connections or broken 4. Find the connection or wiring fault.
wires Correct or repair as required.
Brake does not stop 1. Broken or damaged parts 1. Replace.
properly
2. Worn friction disc 2. Replace disc if worn to 1/8”
thickness. If disc replacement is not
required, adjust air gap. (Refer to
“Wear Adjustment” section.)
3. Hub positioned incorrectly 3. Locate hub (22) and key (33), if
(models with two-piece shaft and hub required. (Refer to “Installation”
only) section.)
4. Brake is manually released 4. Determine if manual release is in
normal position.
Brake chatters or hums 1. Dirty magnet faces 1. To remove dirt, insert a clean sheet
of paper between faces and energize
brake. Move paper around between
faces to dislodge dirt, then remove
paper.
2. Magnet faces are not parallel in closed 2. See “Pivot Stud Adjustment”
position section.
3. Loose or broken shading coil 3. Replace magnet assembly (25A).
4. Wrong voltage supply 4. Check for low voltage.
Manual release does not 1. Broken or damaged parts 1. Replace
work
2. Improper setting 2. See “Manual Release Adjustment”
section.
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