INSPECTION AND MAINTENANCE INSTRUCTIONS
--------EVERY LIFT--------
■
Keep the lifting surfaces of the magnet CLEAN, SMOOTH, FLAT, and FREE OF RUST
or any FOREIGN MATERIALS. Nicks and burrs on the lifting surfaces will reduce lifting
capacity. If burrs occur, they can be removed by filing the contact surface. Care must
be taken to protect the neighboring lifting surfaces when filing.
■
Deep nicks may require grinding the entire lifting surface. (See Weekly Inspection In
structions)
■
Check that the alarm sounds and the red
DANGER
indicator lights when the LIFT but
ton on the Front Panel or I.R. remote is pressed. If either the lamp and alarm do not
operate,
DO NOT USE THE MAGNET.
--------- DAILY ---------
■
Check the entire magnet's case, lifting surfaces, lifting arms, bail, and welds for cracks or
other defects. If present,
DO NOT USE THE MAGNET-
Contact a Qualified Person or
0. S. Walker.
■
Check the lifting bail bar and shaft for wear. If the bail bar or shaft is worn to 80% of its
original size, it must be replaced.
■
Keep the battery charged as described on page 6.
■
Check battery connections. If corrosion appears, disconnect the battery, clean the termi
nals, then reconnect. (Always remove black(-) battery lead first and connect it last.)
■
Check the physical condition of all cables, leads, lamps, and alarms. Repair or replace
any suspicious components.
■
Check the condition of the Operating Instruction label and Product Safety signs. If these
labels and signs are missing or damaged, they should be replaced.
---------WEEKLY---------
■
The lifting surfaces of the magnet should be checked for flatness and wear. Uneven
wear and non flat surfaces can create an air gap between the magnet and load which
will greatly reduce the lifting capacity. Some nicks and burrs will occur on the lifting
surfaces due to normal usage. If the flat contact area of the entire magnet's lifting sur
faces becomes less than 90% of the original total lifting surface, it should be taken out
of service until the lifting surfaces can be reground.
■
If regrinding is necessary, all the lifting surfaces must remain flat and in the same
plane. After regrinding, the magnet must be re-tested for breakaway force in accor
dance with the test described in ANSI/ASME B30.20.
■
Check the rigid epoxy of the encapsulated coil. If any cracks or distortion of the epoxy
is evident, immediately contact O.S. Walker or your supervisor.
O.S. Walker recommends that your lifting magnet be re-tested for breakaway force each year.
O.S. Walker Inc., Battery Powered Magnets
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