Schwing SPB 28, Руководство по эксплуатации

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Appendix
SPB Operation Manual
Decibels
A measurement of volume equal to one tenth of a bel,
abbreviated dB. As it applies to concrete pumps, it is
a measurement of the sound pressure level one me-
ter away from a noise source. Because constant ex-
posure to loud sound can cause permanent hearing
loss, OSHA has developed guidelines for time limits
on exposure to sound at different volumes. The chart
is in section 6.13 of the Safety Manual.
Drive Engine
The primary source of power for a hydraulic system.
Typically, the word engine denotes an internal com-
bustion device, whereas the word motor denotes an
electrical device. See also: Prime Mover
Electrocution
Made by combining the words “electric” + “execution.”
It means “death by electricity.” See also: Conductors
EN 287-1 / PREN 288-3
The code for structural welding with steel as defined
by the European Norm. See also: Certified Welder
Expert
As used in this Safety Manual, an expert is defined
as a person who, on the basis of specialized train-
ing and experience, has developed a high degree of
knowledge and skill in the areas of concrete pumps,
concrete pumping, cleanout procedures, generally
accepted engineering norms, and safety regulations
to the extent of being able to evaluate equipment
and processes as they relate to job safety. Experts
demonstrate their knowledge and abilities by passing
the certification testing and experience requirements
of the American Concrete Pumping Association.
Other experts may include master mechanics and
after-sales service technicians of the manufacturer.
See also: Certified Operator
Fast Switch
A secondary hydraulic circuit added to single- cir-
cuit machines to disable the stroke limiter during the
switch of the Rock Valve cylinder, thereby making the
Rock Valve switch quickly. This circuit is not needed
or available on twin- circuit machines.
Foreign Material
Material that was never intended to be pumped but
ends up in the concrete hopper. Examples of foreign
material include small animals, hammers, ready-mix
truck fins, unmixed clumps of cement, hardened con -
crete that breaks away from ready- mix truck fins,
and soft drink cans. Many of these items can create
a blockage if they are pumped through the system.
Go Devil
A plug made from a rubber composite, usually with
several fins that expand to seal when pressure is
applied. Go devils are intended to be inserted in a
steel delivery pipeline and pushed with water or com-
pressed air for the purpose of cleaning the pipe. Not
to be used with rubber hose or short sections of pipe.
See also: Sponge Ball
Guide
An assistant brought in to help with backing up a
truck or trailer or with other circumstances in which
the driver cannot see enough to ensure safety. See
also: Spotter
High Voltage
For the purposes of this manual, any current over
120 volts AC is considered high voltage. In the United
States, electrically driven concrete pumps normally
operate the motors at 480 volts AC (high voltage) and
the controls at 24 volt DC (low voltage). With electric
wires in residential or industrial areas, the voltage is
approximately 8000 volts to ground or 13,800 volts
from phase to phase (distribution voltage). When
dealing with electric wires that are mounted high
above the ground on steel towers, the voltage ranges
from 100,000 to 1,000,000 volts (transmission volt-
age).
Hopper Grate
A meshwork typically made from steel bars and
placed over the concrete hopper. It serves to keep
human body parts away from the agitator (when left
in its proper position) and to keep large foreign ob-
jects from falling into the hopper, which could cause
blockages if they were pumped. The hopper grate
must be secured in position in order to be effective.
Jacking the Outriggers
Adjustment of the outriggers in the vertical direction.
With boom-mounted concrete pumps, you should
strive to make the adjustments so that the unit sits
within 3° of level.
Licensed Electrician
A qualified electrician licensed by the state, county, or
municipality where the connections are to be made.
In some locations, electricians are not required to be