Walker Magnetics CER SERIES - Manual (Page 15)

15
O.S. Walker Inc., CER Lift Magnet
To estimate the weight of a steel work piece, first determine the volume of the Load in cubic
inches. Then multiply the volume (cubic inches) by the density of steel (.283) pounds per
cubic inch.
LOAD WEIGHT GUIDELINE
If you have any difficulty lifting a load, DON’T LIFT IT!
Call Walker for advice at 1-800-962-4638
WARNING
Load Weight (steel) = (volume) multiplied by (density)
= (W x T x L) x (.283)
Example: What is the weight of a 10” wide x 5” thick x 96” long piece
of steel?
Load Weight = (10 x 5 x 96) x (.283) = 1358 lbs
DUTY CYCLE
DO NOT EXCEED THE RATED 50% DUTY CYCLE OF THESE MAGNETS. (Exceeding the duty cycle will result
in reduced lifting capacity, and a shorter magnet life.)
Duty cycle rating (D.C.%) is defined as:
(Time On x 100) / (Time Off + Time On) = D.C. % and is expressed as a Percent (with a maximum of 10 minutes
Time On).
Therefore, to maximize the effectiveness of your magnet, keep the power off when the magnet is not in use.
EXAMPLES:
3 MINUTES ON, 1 MINUTE OFF EQUALS: (3 x 100) / (3 + 1) = 75%
5 MINUTES ON, 5 MINUTES OFF EQUALS: (5 x 100) / (5 + 5) = 50%