Dings Dynamics Group 70 Series Coupler NEMA 4X - Manual (Page 3)

MAGNET COIL REPLACEMENT
(See Figures 1, 3 & 4)
Remove magnet assembly as outlined under FRICTION DISC
REPLACEMENT.
Coils (21) are held in place with epoxy cement. Force coil off
magnet mounting plate and remove excess epoxy from all surfaces.
Replacement coils should be held in place with new epoxy cement.
The epoxy cement should be heat resistant and shock resistant.
Place an insulating washer (20) below the coils. Order insulating wash-
ers when ordering coils. An insulating washer can be cut to
suit when replacing only one coil on a multiple coil assembly.
When installing coils, it is very important to follow EXACTLY the
sequence of black and light colored leads as shown in wiring
diagram (Figure 1). The brake will not operate properly unless coils
are all in the correct position.
Reassemble all parts in reverse order.
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 ADJUST
MENT.)
6. Check for failure or 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.
4. Check disc wear. (See WEAR ADJUSTMENT.)
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.
Readjust magnet gap to “D” min. (See WEAR ADJUST
MENT.)
4. Check if shading coil (22) is cracked, broken or out of
position (single phase only).
D. IF MANUAL RELEASE DOES NOT WORK:
1. Check for broken or damaged parts.
2. Check return spring (11). Brake will not reset automatically if
this spring is broken.
3. Check quantity of shim washers (13) under release stop
screws. (See Manual Release Assembly under
“FRICTION DISC REPACEMENT”.)
Figure 3. Fastening of Replacement Magnet Coils
SPECIFICATIONS
MOTOR FRAMES - 182TC, 184TC, 213TC, 215TC, 254TC, 256TC.
ENCLOSURES - NEMA 4X Washdown
(material: aluminum and cast iron)
DUTY - Rated for continuous duty.
VOLTAGES - All standard NEMA voltages and frequencies available.
Other voltages and frequencies are optional.
MOUNTING - Direct to NEMA “C” face, with one additional “C” face for
mounting of equipemnt to brake. Some standard motor shafts may
need modification, see Table 1.
Horizontal or vertical mounting with modifications.
Maximum Ambient Temperature: 40
o C
Maximum Input Speed: 3600 rpm
Certification: CSA Enclosure 4.
Also conforms to the following specifications:
NEMA MG1-1.26.5
BISSC
3A Dairy
Wis. food & dairy regulations
ORDERING INFORMATION
The following data should be furnished with your order for:
REPLACEMENT PARTS
Brake Model Number
Part Number from Tables
Part Description from Tables
Hub Bore & Keyway. Shaft Extension Diameter & Keyway.
For electrical parts specify voltage, phase, and frequency.
REPLACEMENT BRAKE
Model Number
Voltage, Phase & Frequency
Hub Bore & Keyway Dimensions. Shaft Extension Diameter & Keyway.
Mounting - Horizontal or Vertical. (If vertical, specify whether above or
below motor.
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WARRANTY
Seller warrants products manufactured by it and supplied hereunder
to be free from defects in materials and workmanship under normal
use and proper maintenance for a period of twelve months from date
of shipment. If within such period any such products shall be proved to
Seller’s reasonable satisfaction to be defective, such products shall be
repaired or replaced at Seller’s option. Seller’s obligation and Buyer’s
exclusive remedy hereunder shall be limited to such repair and
replacement and shall be conditioned upon Seller’s receiving written
notice of any alleged defect no later than 10 days after its discovery
within the warranty period and, at Seller’s option, the return of such
products to Seller, f.o.b. its factory, when such return is feasible. Seller
reserves the right to satisfy its warranty obligation in full by reimbursing
Buyer for all payments it makes hereunder, and Buyer shall thereupon
return the products to Seller. Seller shall have the right to remedy such
defects. Seller makes no warranty with respect to wear or use items,
such as belts, chains, sprockets, discs and coils, all of which are sold
strictly AS IS.
The foregoing warranties are exclusive and in lieu of all other
express and implied warranties (except of title) including but not
limited to implied warranties of merchantability, fitness for a par-
ticular purpose, performance or otherwise, and in no event shall the
Seller be liable for claims (based upon breach of express or implied
warranty, negligence, product liability, or otherwise) for any other dam-
ages, whether direct, immediate, incidental, foreseeable, consequen-
tial, or special.