DYNAMICS GROUP 2-81025-28 Gebruiksaanwijzing - Pagina 6

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TROUBLE SHOOTING

A. IF BRAKE DOES NOT RELEASE:

Check brake visually for broken or damaged

parts.

Check for broken leadwire or bad electrical

connection.

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.

Check for burned-out coils (coils may be

charred or burned).

Check for excessive magnet gap. (See WEAR

ADJUSTMENT.)

Check for failure or power supply to brake.

B. IF BRAKE DOES NOT STOP:

Check brake visually for broken or damaged

parts.

Make certain hub has not shifted position on

the motor shaft and that all rotating discs are

fully engaged on the hub.

Check that the manual release is in the

normal position.

Check disc wear. (See WEAR ADJUSTMENT.)

SPECIFICATIONS

MOTOR FRAMES - 284TC, 286TC.

HOUSINGS - Standard is cast iron and aluminum. Enclosed is all

cast iron.

DUTY - Rated for continuous duty.

VOLTAGES - All standard NEMA voltages and frequencies avail-

able. Other voltages and frequencies are optional.

MOUNTING - Direct to NEMA "C" motor flanges. Adaptors for

larger or smaller frames, foot mounting and vertical mounting are

available.

SHAFTS - NEMA standard length motor shafts and thru shafts may

be used on all models except units with Mark II Release (Cover

modification required for thru shafts).

4740 W. ELECTRIC AVE.

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MILWAUKEE, WI 53219

414/672-7830

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C. IF BRAKE CHATTERS OR HUMS:

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.

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.

See that magnet faces are parallel within

tolerance. Readjust magnet gap to "D" min.

(See WEAR ADJUSTMENT.)

Check if shading coil (20) is cracked, broken

or out of position (single phase only).

D. IF MANUAL RELEASE DOES NOT WORK:

Check for broken or damaged parts.

Check return spring (11). Brake will not reset

automatically if this spring is broken.

Check quantity of shim washers (13) under

release stop screws. (See MANUAL RELEASE

ASSEMBLY.)

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

(On hub order furnish bore dia. & keyway dimensions. On

electrical parts specify voltage, phase & frequency.)

REPLACEMENT BRAKE

Model Number

Voltage, Phase & Frequency

Hub Bore & Keyway Dimensions

Mounting - Horizontal or Vertical. (If vertical, specify whether above

or below motor. If brake includes foot mounting bracket or adaptor,

specify.)

FAX 414/672-5354

www.dingsco.com

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Printed in U.S.A. BK4604 (12/01)