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Mondel Electric Shoe Brakes Installation & Maintenance Manual
Electric Shoe Brakes
Wheel Sizes 15 and 16


Mondel Electric Shoe Brakes - Wheel Sizes 15 and 16 Instruction Manual



Part Number: 560039-R1
January 2006

©
Copyright 2006 Magnetek

Material Handling


SUPPLEMENTS FORMING PART OF THIS MANUAL:


LOW TORQUE SPRINGS

NON-LATCHING
HAND
RELEASE

FORCING
RECTIFIER

NON-FORCING
RECTIFIER


TERMINAL BOX RECTIFIER


MANUAL RELEASE ACTIVATED LIMIT SWITCH
















BRAKE WEIGHT:

APPLICABLE DIMENSION PRINT:

EXPLODED VIEW:

PARTS LIST:

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SA1 Electric Shoe Brakes


Wheel Sizes 15 and 16 Inch Diameter

560039-R1






Installation and Maintenance
Instructions

Type SA1 Electric Shoe Brakes

Wheel Sizes 15 and 16 Inches
Diameter
Table of Contents

Chapter 1.0: SA1 Electric Shoe Brakes 15 and 16 Inches Warnings and Cautions........................... 4
Chapter 2.0: General Description........................................................................................................ 7
Chapter 3.0: Application ...................................................................................................................... 9
Chapter 4.0: Description of Operation............................................................................................... 10
Chapter 5.0: Installation .................................................................................................................... 12
Chapter 6.0: Adjustment.................................................................................................................... 15
Chapter 7.0: Electrical Detail............................................................................................................. 18
Chapter 8.0; Operational Test ........................................................................................................... 21
Chapter 9.0: Maintenance and Repair .............................................................................................. 22
Chapter 10.0: Replacement Parts ..................................................................................................... 27
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SA1 Electric Shoe Brakes


Wheel Sizes 15 and 16 Inch Diameter

560039-R1


Chapter 11.0: Long Term Storage..................................................................................................... 29 Chapter 1.0: SA1 Electric Shoe Brakes 15 and 16 Inches Warnings and Cautions


Read and Understand All Warnings And Cautions Printed In This Manual Before Commencing
Installation, Adjustment Or Repair


Chapter 5: Installation Warnings and Cautions

Anyone involved in the installation or service of this brake must have:

Received specific training.

Had experience on similar equipment.

Knowledge of the equipment on which the brake is installed.

The ability to understand the terminology.

The ability to understand the diagrams.


Do not proceed unless technically qualified for the work involved.


The integrity of the brake may be compromised or a replacement part may not fit if alterations are
made to the brake to achieve required alignment.


If the alterations to the brake supporting structure are required, they must be done under the
direction of a competent authority.


All electrical power to this equipment must be disconnected by competent personnel. Consult
specific wiring diagrams to identify and isolate all live power inputs to the equipment.


Unexpected movement or hazardous voltage can cause injury or death. Disconnect, lock out, and
tag out the power source that feeds this device to prevent power from being applied while
inspection and repairs are being performed. Before beginning repairs, try the operational controls
to verify that the intended power source is disconnected.


Protect against the possibility of movement due to the effects of gravity, wind or other source of
energy, which has the potential to create a hazard when the brake is being worked on or is
removed entirely.


On a hoist, chock the drum to prevent any rotation, due to the effect of gravity on the hook block
etc.


On the travel motion subject to the effect of wind or camber gradient, apply the wind anchors or
otherwise secure the equipment against inadvertent movement when the brake is being worked
on or is removed entirely.

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SA1 Electric Shoe Brakes


Wheel Sizes 15 and 16 Inch Diameter

560039-R1


Never lift the brake assembly by the brake rod. The weight of the brake can irreversibly damage
the rod leading to fracture and total loss of braking effect.


Failure to properly install the brake wheel may result in the brake wheel working its way off the
motor shaft, resulting in total loss of braking. Do not operate this brake unless the brake wheel is
correctly secured to the motor shaft.


The brake wheel installation must be complete and the brake wheel fully secured before
attempting to finalize the brake installation.


Failure to properly center the brake and obtain uniform lining contact causes local heating and,
ultimately, reduced torque leading to injury or death.


Connect power to the brake using flexible cable and sealing gland, or flexible sealed conduit.
Prevent contaminant entry and allow for movement of the electro-magnet during brake operation.


Chapter 6: Adjustment Warnings and Cautions

Disconnect, lock out, and tag out the disconnect switch which feeds this equipment to prevent
power from being applied while service is being performed.


Monitor the brake frequently, and do not allow the air gap to exceed the maximum value as shown
on the adjacent setting plate.


Under no circumstances should the brake be allowed to function without torque spring pre-
compression. Load control will be lost, possibly resulting in injury or death.


WARNING: Reducing the torque to the applied brakes lower limit may seriously affect the brakes
drop-out time.


Caution: Braking torque is lost when torque spring pre-compression is reduced to zero.


Chapter 7: Electrical Detail Warnings and Cautions

A flexible cable and sealing gland, or flexible sealed conduit must be used to connect power to
the electro-magnet. Prevent contaminant entry and allow a few degrees of movement for the
actuator during brake operation.


Avoid contact with live terminals and prevent contaminant entry. Replace the terminal box
cover as soon as connections are complete.
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SA1 Electric Shoe Brakes


Wheel Sizes 15 and 16 Inch Diameter

560039-R1



Chapter 8: Operational Test Warnings and Cautions

Always perform an operational test of the brake after any replacement, adjustment, or repair.
Read and understand the intent of the warnings published in this document if in doubt, ask.


In a hoist application, post observers to monitor the position of the hook if it travels out of sight of
the operator.


Before conducting an operational test, remove all tools, chocks and other equipment, which may
create a hazard when the machine is operated.


Following any repair or adjustment, and before conducting an operational test, verify that all brake
adjustments are complete in accordance with Chapter 6.


Before attempting to operate any motion in any application, advise and account for the location
and security of all personnel involved.


Chapter 9: Maintenance and Repair Warnings and Cautions

When replacing a brake wheel or associated drive line components on an existing installation,
verify that the brake is centered with uniform lining contact as described under the topic Brake
Installation. Incorrect repair or replacement can result in death or injury to personnel.


Improper brake operation and loss of load control due to incorrect brake adjustment can result in
death or injury to personnel.
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SA1 Electric Shoe Brakes


Wheel Sizes 15 and 16 Inch Diameter

560039-R1


Chapter 2.0: General Description

2.1:
The type SA1 spring applied brakes are intended for hoist or travel motion drives in light to
medium duty industrial applications, at up to 120 operations per hour. They are available for
brake wheels 4 to 16 diameter. SA1s are ideal in adjustable frequency motor control systems
where deceleration energy is absorbed by the motor, and the brake essentially functions to hold
the load; consequently, shoe wear is minimal.

2.2:
This versatile spring applied, DC magnet released, short stroke, high-speed, low armature imp