SECTION 5 - SAFETIES
Page 5-1
Rev B – June 2013
5.1
The Wedge type safeties require onsite adjustment.
Adjust the brake adjustment bolts (see figure two) so that the brakes move 1-1/4” off the lifting bar when manually
lifted and jammed between the roller and guide rail. Ensure that each brake set are tight across the face of the brake.
This may need to be repeated a few times to get both brakes set equally.
Next block the counterweights and jack up the carriage 12” to cause the cables to go slack. Without moving the brake
shoes make a final adjustment to ensure that both sets of brakes are engaged equally.
Release the jack quickly, both brake sets should engage equally. Repeat drop test with 125% of the rated carriage
load.
Note: The above procedure is for slack cable activated safeties. When using an overspeed governor, activate the
safeties by moving the linkage up by hand when moving in the down direction at contract speed with 125% of the
rated load instead of jacking up the carriage to slacken the cables.
Figure 2. Location of brake adjustment bolts.
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