Dings Magnetic Group Self-Cleaning Electro Overhead Magnets User Manual
Installation and
Maintenance Manual
For
Dings Self-Cleaning
Electro Overhead
Magnets
Table of Contents
General Information ......................................................................................................... 1
Installation Procedures
Unpacking and Handling ......................................................................................... 2
Magnet Storage ....................................................................................................... 3
Magnet Installation .................................................................................................. 4
Electrical Connections ............................................................................................. 5
Rectifier Over Current Protection ............................................................................. 6
Maintenance .................................................................................................................... 7
Electrical Troubleshooting ............................................................................................. 11
Self Cleaning Belt Replacement Procedure .................................................................. 15
Revised May 19, 2014
General Information
Magnet
Dings Model:
Dings Part Number:
Dings Serial Number:
Gallons of Oil in Magnet:
Rectifier
Dings Model:
Dings Part Number:
Warnings:
This Dings magnet emits a powerful magnetic field when energized. The magnet must be
positioned within an inaccessible or guarded area so that no contact can be made with moving
parts while the magnet is in operation.
The surface of the magnet box may reach temperatures of up to 230ºF (110ºC) while
operating. Take care not to touch magnet surface and allow sufficient cooling time before
handling.
Before performing maintenance, the magnet must be de-energized and allowed to cool for at
least 6 hours. Lock out/tag out electrical supplies to prevent unexpected movement or
magnetization during maintenance.
The magnet box is filled with transformer oil to cool the magnet during operation. Inspect oil
level and quality regularly to prevent damage to magnet components.
CAUTION: STRONG MAGNET
Strong magnetic field may have and affect on pacemakers and other electrical devices. Please
contact the device manufacturer for further information.
1
Revised May 19, 2014
Unpacking and Handling
Upon receiving, check all packaged material for shortage of parts and possible damage.
Report shortages and damage to the carrier who delivered shipment. The magnet was
shipped fully assembled, ready for operation. If a material deflector was supplied, it was
shipped separately and must be bolted on before operation. Electrical connection is required
to a suitable source of direct current such as a rectifier.
Magnet
This Dings self-cleaning electromagnet was shipped using 4” x 6” wooden beams as supports
under the two sides of the magnet. This is done to protect the belt and the magnet surface
from damage during shipment. After unloading, the magnet should never be placed directly on
the ground. Rather, wood beams or some other means of support should be placed beneath
the two sides of the magnet box to raise the magnet and belt above the ground.
The magnet should always be moved using the four lifting lugs provided. Never use a forklift
or other device to lift the magnet from the bottom.
The magnet should be stored indoors prior to installation.
Rectifier
The rectifier is a sensitive piece of electrical equipment. It has been shipped on a separate
pallet to protect it during shipment. Take care not to drop or shake this equipment during
handling.
The rectifier may be left strapped to the pallet while being moved. If it has been removed from
the pallet, make sure it is securely fastened to forklifts or winches for moving.
The rectifier should be stored indoors prior to installation.
2
Revised May 19, 2014
Recommended Storage of Overhead Magnets
1) On a self-cleaner, remove tension from drive belts and conveyor belts.
2) It is essential to keep moisture out of magnet cooling oil.
3) The following precautionary procedures are recommended:
a) Store magnet indoors in a low humidity, even temperature environment if possible.
b) Keep water and any other form of moisture away from the magnet while in storage.
4) This is a procedure for indoor storage only. Outdoor storage is definitely not advised and
will null and void our warranty on the magnet assembly.
5) Self-Cleaning Belt:
All belting should be stored in a cool, dry room, free from sunlight, steam pipes, oil, water,
moisture, and corrosive fumes.
6) Reducers:
PERIODICALLY INSPECT STORED OR INACTIVE DRIVES AND SPRAY OR ADD RUST
INHIBITOR EVERY SIX MONTHS, OR MORE OFTEN IF NECESSARY. INDOOR DRY
STORAGE IS RECOMMENDED.
7) Motor:
(One year or less.) Units should be stored indoors, in a clean, dry location. Winding should
be protected from excessive moisture absorption.
8) Bearings:
Rotate bearings every three months.
9) Rectifiers:
a) It is mandatory that the rectifier be stored indoors away from water and moisture.
b) It is recommended that the rectifier be put in a plastic, tightly sealed cover or bag to
prevent moisture from getting into the rectifier if it’s stored in an unheated building.
c) If possible, rectifier should be stored in an even temperature environment.
Revised May 19, 2014
3
INSTALLATION
A Self-Cleaning electro overhead magnet is built in 2 types: Inline and Crossbelt. An Inline
type is installed over a conveyor head pulley so that the cleaning belt runs parallel to the travel
direction of material falling off the conveyor. The head pulley must be made from nonmagnetic material. A Crossbelt type is installed over a conveyor so that the cleaning belt runs
at a right angle to the travel direction of the material on the conveyor.
Magnetic performance may be affected by magnetic material in the field. This includes such
items as I-beams, metal supports, hoppers, or splitters. These and other ferrous objects need
to be kept out of the magnetic zone.
Crossbelt Suspension Inline Suspension
Suspension height is critical to the performance of the magnet. This distance is measured from
the bottom of the magnet face to the surface of the material handling belt.
The magnet should be mounted at the recommended suspension height. IF MAGNET IS TOO
HIGH ABOVE BURDEN, SUFFICIENT MAGNETISM MIGHT NOT REACH INTO THE
BURDEN. TOO MUCH HEIGHT WILL CAUSE A LOSS OF SEPARATION EFFICIENCY. For
best results, crossbelt separators should be centered over the belt and parallel to the slope of
the belt conveyor. Refer to page 10 for maximum conveyor incline.
4
Revised May 19, 2014
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