Columbus McKinnon Yale CPV Series Translated Operating Instructions page 36

36
Force-limit factor Of Overload Protection Device
The force-limit factor according EN 14492-2:2006 amounts фDAL=1,55. The maximum force occuring when the rated capacity limiter
operates will be calculated as:
FLIM = (φDAL x mRC + mH - mRC) x g
φDAL = 1,55
mRC = Rated capacity of the hoist [kg]
mH = Hoist load [kg]
Hoist load mH: Load which includes all the masses of a load equal to the rated capacity of the hoist, the hoist medium and the fixed load
lifting attachments, e. g. hooks, grabs, magnets, lifting beams, vacuum lifters.
g = Acceleration due to gravity (9,81) [m/s2]
Testing and Adjustment of overload device (Fig. 26)
ATTENTION: The settings of the overload circuit-breaker should be defined only by a competent person.
ATTENTION: The unit is ready for operation during this activity and there is a risk of physical injury caused by rotating parts.
ATTENTION: The result of the check and adjustment of the overload circuit-breaker must be recorded in the test log of the
device.
The unit is equipped with an overload protection device as standard. This device is factory set to 145 % ± 10 % of the rated capacity
and prevents reliably overloading of the hoist during lifting of loads. Adjustment and testing of the overload device may only be carried
out by authorized competent persons.
• Loosen the four cylinder screws (item 1) of the fan guard (item 2).
• Remove the fan guard (Pos. 2)
• Disassemble fan (Pos. 4) accordingly the different design (clipped, screwed or with lock ring).
• Loosen the threaded pin of the adjusting nut
• Loosen the adjusting nut by turning it in the anti-clockwise direction up to the stop with a two-hole nut turner in accordance with
DIN 3116 (item 6).
ATTENTION: After resetting the adjusting nut, the threaded pin has to be tightened again to secure the setting!
• For a suspended test load, the adjusting nut is to be turned in the clockwise direction until the test load is lifted.
ATTENTION: The max. operating time of the overload circuit-breaker is 60 seconds. Then, the unit has to cool down to a room
temperature (min. 20 minutes).
• Assembly takes place in the reverse sequence.
4
3
2
1
6 5
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2016 Columbus McKinnon Industrial Products GmbH