Peak 409A - Install Safety Ladders

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2. Install safety ladders (See Fig. 20).
G. Put the cross beams at the same height (See Fig. 21).
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Fig. 20
Safety ladder pass through
the hole of the top plate,
then tighten the two nuts
Fig. 21
This height should
be the same for
four safety ladders
The four primary safety
locks are adjusted to be
locked to the safety
ladders at the same
time
Lifting both cross beams
to the same height, it is
recommended to about 1
meter height
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Lifting Both Cross Beams to the same height