Schwing SPB 28, Operation Manual

Page: 56 / 216

GENERAL RULE S
PAGE 26
700+ smgr.fm
S AF ETY M AN U AL
nalperson. If a signalperson is used, agree on hand signals before beginning the
pour! (ACPA recommended hand signals are shown on page 74 of this Safety
Manual .) If the boom will be moved extensively, arrange for a workman to stay
with the pump and to put yourself in a position to see the end of the boom (Figure
34).
6.35
Use only material delivery system components in good con-
dition. The useful life of delivery system components is affected by: pumping
pressure, concrete composition, pipeline material, velocity of moving concrete,
and other factors. The use of ultrasonic equipment for determining pipe wall
thickness of single wall pipe is highly recommended (Figure 35). For double-
walled pipe, follow the manufacturer’s recommendations. Read and understand
the minimum wall thickness chart in the Appendix section of this
Safety Manual .
If you don’t understand the chart, contact the service department of the manufac-
turer of your machine for assistance.
spotter 3 .eps
Figure 34
Arrange communications before starting
WARNING
ultradwg.eps
Figure 35
Check for wear on the delivery system components
††