Landoll Drexel SLT30 AC, Руководство оператора

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3-8
UNDERSTANDING SLT30AC TRUCK
System cooling uses convection and
conduction of heat from the
reservoir, hydraulic tubing and
cylinders to maintain a safe
operating temperature below 175° F
(97.22° C). Filtering consists of a
steel mesh suction filter within the
hydraulic reservoir, plus an easily
accessible return line filter(10
micron rating).
The following points detail how each
of the hydraulic functions operate:
Mast Controls
Mast positioning is achieved by
operating the proportional control
valve via a non-contact hall effect in
the joystick. Hydraulic pressure is
provided by a vane pump driven by
a single A.C. electric motor. Mast
movements may be operated
individually or together, however,
when operated together, the speed
of operation is somewhat slower. A
fifth (5th) function hydraulic valve is
available for an approved Class II
optional attachment.
Mast Lift
The mast lift circuit provides the
means for lifting and lowering the
mast and fork assembly. The mast
lift consists of three hydraulic
cylinders - one primary and two
secondary, a velocity fuse and a
flow regulator.
Mast Tilt
The mast tilt circuit provides the
means for moving the mast and fork
assembly forward and back. Tilting
movements are accomplished
through the use of two hydraulic
double-acting cylinders mounted to
the bottom of the pivot arm.
Mast Side Shift
The side shift circuit provides the
means for moving the mast laterally
(left-to-right). Side shift movements
are accomplished using two
hydraulic cylinders that push the
crosshead, mounted on nylatron
slides.
Mast Pivot
The mast pivot circuit provides the
means for moving the mast
assembly from the forward position
to a 90º right facing fork position.
Pivot movements are accomplished
by the use of the pivot cylinder
mounted between the pivot arm and
crosshead assemblies.
Mast Assemblies
Various mast assembly
configurations (triplex or quad) can
be applied to the SLT30 AC Model
trucks to provide both collapsed and
extended heights suitable for all
customer requirements. The lifting
capacity of the mast also varies
depending on the truck and its
application. Load capacities are
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