Warner Electric Electrically Released Brake ER-375, ER-475, ER-650 - Manual (Page 2)

2 Warner Electric • 800-825-9050 P-253 • 819-0315
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation Instructions . . . . . . . . . . . . . . . . . . . .3
Power Supplies/Brake Release Adjustment . . . . .4
Autogap Adjustment . . . . . . . . . . . . . . . . . . . . . .5
Operating Instructions . . . . . . . . . . . . . . . . . . . . .6
Dimensions and Specifications . . . . . . . . . . . . . .8
Bushing Part Numbers . . . . . . . . . . . . . . . . . . . .9
Exploded View . . . . . . . . . . . . . . . . . . . . . . . . .10
Component Parts/How to Order . . . . . . . . . . . .11
Warranty . . . . . . . . . . . . . . . . . . . . . . .Back Page
Introduction
This service manual tells how to install, adjust,
and maintain your Warner Electric brake. It also
contains information for part replacements
when needed.
Warner Electric Electrically Released Brakes are
high performance, high torque units. After carefully
reading these instructions, no assembly or
installation difficulties should be encountered.
Warner Electric Electrically Released brakes
function on the same principle of "response to
magnetic attraction" that operates other Warner
Electric brakes and clutches. Braking torque in
these brakes depends on ceramic permanent
magnets which have a high resistance to
demagnetization. With the power off, the unit
produces full braking torque. The brake is released
by generating an electromagnetic field which
opposes the field produced by the permanent
magnets.
Basic Mechanical Considerations
Electrically released brakes require special
mounting considerations. Please review the items
listed below prior to starting installation per Step 1.
a) If the magnet mounting surface is a magnetic
material, the magnet must be insulated
approximately 1/2 inch from that surface with a
plate or spacers of non-magnetic material.
b) Caution must be exercised when the armature
is moved close to the magnet assembly since
the permanent magnets create a very strong
attractive force. Injury may result if fingers are in
between the armature and magnet when the
gap is 1/2" or less.
Failure to follow these
instructions may result in product damage,
equipment damage, and serious or fatal
injury to personnel.