
Both the precharge chamber and the hy-
draulic system of the carrier provide the
force for the working stroke. This design
feature makes the impact energy of the
hammer largely independent of fluctua-
tions in the hydraulic system of the carrier
during operation.
9.11 Special Operation
Environments
9.11.1 Working Underground
When using the Street Hammer under-
ground (tunneling or mining applications)
special regulations may apply. Additional
considerations include:
·
use water sprays to suppress dust.
·
use fire-resistant hydraulic fluids when
required.
Hydraulic systems using fire resistant flu-
ids require special engineering consider-
ation when using the Street Hammer. With
some fluids, decreased flow and/or pres-
sure to the hammer may be necessary.
Contact Allied well before installation for
specific parameters for your particular
fluid.
9.11.2 Working Underwater
~
WARNING
Never use a Street Hammer under-
water. The Street Hammer is not
built for underwater use.
9.12 Working In High Outside
Temperatures
Check the oil temperature frequently to
ensure it does not exceed 176oF [80oC]. If
higher temperatures are measured in the
tank, a heat exchanger must be installed.
Use only hydraulic oils with adequate vis-
cosity.
~
CAUTION
When working in temperature con-
ditions below -4oF [-20oC], the hy-
draulic hammer shall not be put
into operation while the hydraulic
oil is still cold. Operating the ham-
mer with cold hydraulic oil may
cause the seals in the hammer to
break.
Observe the carrier manufacturer’s
regulations.
9.13 Working in Low Outside
Temperatures
When the temperature is below -4
o
F. (-20
o
C.), warm up the oil by running the carrier
before starting the Street Hammer.
Keep oil circulating in the carrier during
breaks in work so that the oil does not get
too cold for normal operation.
6-1-03
9-5
A
LLIED
Street Hammer
AS Series
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