11
Principles of Operation
The Warrior is a hydraulically operated concrete
pump that is designed to pump wet concrete
through a system of pipes and hoses. Normal
operation is controlled at the control panel.
A diesel engine drives the main hydraulic pump.
The hydraulic pump powers the two hydraulic
cylinders, which drive the two delivery cylinder
pistons. A swingtube automatically shifts from
one delivery cylinder to the other to provide a
continuous flow of concrete through the system.
During the pumping cycle, the continuous flow of
concrete is accomplished as one of the hydraulic
cylinders which has the delivery cylinder open
to the hopper retracts, it pulls the piston of the
delivery cylinder. At this point, the concrete is
drawn into the delivery cylinder from the hopper.
When the fully-retracted position is reached, the
proximity switch sends a signal to the swingtube
shift valve. The swingtube then shifts to the
loaded delivery cylinder. The hydraulic cylinder
extends and the delivery cylinder piston pushes
the concrete through the swingtube, out the
discharge and into the delivery line. The cycle is
repeated to provide an uninterrupted concrete
flow.
The flat pack seen in the following illustration
performs the following functions, (1) cools the
delivery pistons and piston rods, and (2) rinses the
inner wall of the delivery cylinders.
Flat Pack Assembly
The Flat Pack is made up of the hopper,
swingtube, concrete cylinders, hydraulic cylinders,
water box.
WARNING
The operator must carefully determine that the
hopper is clear of personnel and/or equipment
before engaging the Remixer.
The operator must carefully determine that
personnel and/or equipment are clear of the
jack stand feet before extending the hydraulic
jackstands.
Operation
Hydraulic Fluid Level and Temperature Gauge
Never operate the pump when oil level is below
the Low Level mark. Inspection of oil level
periodically during operation and at shutdown
is considered good operator awareness. This
will protect against accidental loss of oil. With
the motor running, the proper level should be
between the low and high mark on the gauge.
Normal range of oil temperature is 100°-160°F.
Oil temperature of less than 50°F is in the
cautionary range. The machine should not be
operated at full output until the oil temperature is
above 50°F, otherwise hydraulic pump damage
may occur. Oil that is below 10°F should be
preheated to 50°F ideally but at least to 20°F prior
to starting the engine.
Diesel Fuel Safety
WARNING
Diesel is extremely flammable and is explosive
under certain conditions. Work in a well-ventilated
area with the engine stopped. Do not smoke or
allow flames or sparks in your working area or
where diesel is stored.
WARNING
If the engine must be running to perform
maintenance, make sure your workspace is
well ventilated. Never run the Engine in an
enclosed space. The exhaust contains poisonous
carbon monoxide gas that may cause loss of
consciousness and lead to death.
WARNING
California Proposition 65 warning:
Diesel engine exhaust and some of its
constituents are known to the state of California
to cause cancer, birth defects, and other
reproductive harm.
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