Schwing SPB 28, Operation Manual

Page: 50 / 216

GENERAL RULE S
PAGE 20
700+ smgr.fm
S AF ETY M AN U AL
6.21
Consider the safe approach and departure of the ready mix
trucks and adjust your setup accordingly. Adjusting your setup position by a few
degrees one way or another could mean the difference between a safe approach
and an unsafe approach. Some examples of unsafe approaches are: too near an
excavation or sticking out into traffic.
6.22
If you set up the unit with one or more outriggers not fully
extended on the side away from the pour (shortrigging), you will tip the machine
if you forget and rotate the boom over the side with the unextended outriggers.
That being said, it is known that under certain circumstances, shortrigging is
unavoidable (see Figure 25). If no alternatives are practical and you must shortrig
for a particular job, keep these points in mind.
• Unless otherwise specified by the manufacturer, you may only operate the
boom when it is placed between outriggers that are completely extended and
jacked; you may tip if the boom is placed anywhere else.
• You should still jack the outriggers that are not fully extended. This will assist
in stabilizing and preventing the unit from rocking. The margin of safety this
gives you is very small; and won’t prevent you from tipping.
WARNING
WARNING
Job to be
Pumped
shor
tr
igv
er
t.eps
The green shaded area represents
the only area of safe boom
movement in this example. Use of
the boom in any other area could
cause the machine to tip.
Figure 25
Shortrigging