Warner Electric MTB-I User Manual

Servicing the Warner Electric MTB-I

P-1397
819-0307

The magnet friction pads and armature are the
wearing parts of the Modular Tension Brake
(MTB). While the wear life is normally many
months, the magnets and/or armature(s) may
eventually require replacement.

Failure to follow these
instructions may result in product damage,
equipment damage, and serious or fatal injury
to personnel.

Replacing the Magnet Friction Pad

The magnet consists of the basic coil housing
and a replaceable friction pad. To replace the
pad, proceed as follows:

1. Shut off power at the control system.

2. Remove the carrier assembly from its bracket

and slide the magnet off the pins.

3. Remove the flat head screw which secures

the pad to the housing, and remove the pad.
(See Figure 1)

Installation Instructions

Figure 2

To replace the armature first remove other
components as required to allow removal of
the armature from the hub and shaft. Install
the new armature and other components,
including the magnets and carrier, in reverse
order.

6. Adjust the armature(s) on the shaft for
proper magnet-to-carrier clearance of .200
inch. See Figures 3 and 4 for single or dual
armature units.

Figure 3

Figure 1

4. Install new pad with the new screw provided.

5. Before reattaching the carrier, check the
armature for wear. If the armature is worn to
a thickness of 5/16" or less at the thinnest
section, it must be replaced. If it is more than
5/16" it may be used as is with the new
magnet. (See Figure 2) A used armature
should not be resurfaced even though it may
have a wear pattern from previous use.

Figure 4

Warner Electric 800-825-9050

Warranty

Warner Electric LLC warrants that it will repair or replace (whichever it deems advisable) any
product manufactured and sold by it which proves to be defective in material or workmanship
within a period of one (1) year from the date of original purchase for consumer, commercial or
industrial use.

This warranty extends only to the original purchaser and is not transferable or assignable without
Warner Electric LLC’s prior consent.

Warranty service can be obtained in the U.S.A. by returning any defective product, transportation
charges prepaid, to the appropriate Warner Electric LLC factory. Additional warranty information
may be obtained by writing the Customer Satisfaction Department, Warner Electric LLC, 449
Gardner Street, South Beloit, Illinois 61080, or by calling 815-389-3771.

A purchase receipt or other proof of original purchase will be required before warranty service is
rendered. If found defective under the terms of this warranty, repair or replacement will be made,
without charge, together with a refund for transportation costs. If found not to be defective, you will
be notified and, with your consent, the item will be repaired or replaced and returned to you at
your expense.

This warranty covers normal use and does not cover damage or defect which results from
alteration, accident, neglect, or improper installation, operation, or maintenance.

Some states do not allow limitation on how long an implied warranty lasts, so the above limitation
may not apply to you.

Warner Electric LLC’s obligation under this warranty is limited to the repair or replacement of the
defective product and in no event shall Warner Electric LLC be liable for consequential, indirect,
or incidental damages of any kind incurred by reason of the manufacture, sale or use of any
defective product. Warner Electric LLC neither assumes nor authorizes any other person to give
any other warranty or to assume any other obligation or liability on its behalf.

WITH RESPECT TO CONSUMER USE OF THE PRODUCT, ANY IMPLIED WARRANTIES WHICH
THE CONSUMER MAY HAVE ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF
ORIGINAL CONSUMER PURCHASE. WITH RESPECT TO COMMERCIAL AND INDUSTRIAL
USES OF THE PRODUCT, THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL
OTHER WARRANTIES, WHETHER EXPRESSED OR IMPLIED BY OPERATION OF LAW OR
OTHERWISE, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS.

Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation or exclusion may not apply to you. This warranty gives you specific legal rights and
you may also have other rights which vary from state to state.

Changes in Dimensions and Specifications

All dimensions and specifications shown in Warner Electric catalogs are subject to change without
notice. Weights do not include weight of boxing for shipment. Certified prints will be furnished
without charge on request to Warner Electric.

Warner Electric

31 Industrial Park Road • New Hartford, CT 06057
815-389-3771 • Fax: [phone]
www.warnerelectric.com

P-1397 • 819-0307 10/11 Printed in USA