Walker Magnetics CER SERIES - Manual (Page 16)

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O.S. Walker Inc., CER Lift Magnet
O.S. Walker recommends that your lifting magnet be re-tested for breakaway force each year.
DAILY
 Check the entire magnet’s case, lifting surfaces, bail or eyebolts, and welds for cracks or
other defects. If present, DO NOT USE THE MAGNET - Contact a Qualified Person or O.S.
Walker.
 Check the eyebolt or lift bail for wear. If the eyebolt or lift bail is worn to 80% of its original
dimension, it should be replaced. Retighten the eyebolt if loose.
 Check physical condition of power cord, lamp, and switch. Repair or replace any suspicious
components. Also, check that the twist lock type electric connector is securely attached to
the electrical receptacle.
 Check the condition of the Operating Instruction label and Product Safety signs. Your mag-
net was supplied with one (1) Lifting Guidelines/Operating Instruction label and one (1) Prod-
uct Safety sign. If these labels and signs are missing or damaged, they should be replaced.
INSPECTION AND MAINTENANCE INSTRUCTIONS
 Keep the lifting surfaces of the magnet CLEAN, SMOOTH, FLAT, FREE OF RUST and any
FOREIGN MATERIALS. Nicks and burrs on the lifting surfaces will reduce the lifting capac-
ity. If burrs occur, they can be removed by filing them away. However, care must be taken to
protect the neighboring lifting surfaces.
 Deep nicks may require regrinding of the entire lifting surfaces. (See Weekly Inspection In-
structions)
 Check to assure indicator light has illuminated after selecting the “lift “when the switch is
turned to the “LIFT” position.
EVERY LIFT
WEEKLY
 The lifting surfaces of the magnet should be checked for flatness and wear. Uneven wear
and out of flatness can greatly reduce the lifting capacity because it will cause a non-mag-
netic separation (air gap) between the magnet and the flat surface of the load. Some nicks
and burrs will occur on the lifting surfaces due to normal usage. However, when the flat
contact area of the entire magnet’s lifting surfaces becomes less than 90% of the original
total lifting surface, it should be taken out of service until the lifting surfaces are reground.*
 Check the rigid epoxy of the encapsulated coil. Contact O.S. Walker or a Qualified Person
for repair instructions.
*Regrinding the lifting surfaces.
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 accordance with the
test described in ANSI/ASME B30.20.