Haulotte H12 SD, Operating And Maintenance Instructions Manual

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2.3. DESCRIPTION.
The working platforms on HAULOTTE scissor lifts are enclosed by guardrails. The platform may be lifted or
lowered using a hydraulic cylinder that acts on scissors of three or four cross-sections, depending on the
model, which themselves support the platform.
The frame comprises two steer wheels at the front and two brake-equipped drive wheels at the rear, fitted
with puncture-proof, all-terrain tires (filled with polyurethane foam). On the all-terrain models (H12SDX -
H15SDX), the front wheels are self-steering.
Each machine is powered by a diesel engine. All the control and power componentry is installed in two side
boxes, and comprises:
•
hydraulic tank + filters
•
air-cooled hydraulic pump
•
fuel tank
•
the hydraulic distribution circuit
•
engine start battery
•
electrical controls cabinet
•
tilt sensor
•
2 motor pumps + charger (bi-energy option).
The electrical cabinet on the frame controls:
•
platform up/down functions
•
engine start and stop
•
emergency stop for all movements.
The three movement functions(travel, steer and platform lift) are performed hydraulically.
Travel is by proportional control.
The steer function is actuated by a double-action cylinder.
Options:
•
stabilizers: a set of four thrust cylinders, fixed to the frame and controlled from the platform, increases
platform stability.
•
second sliding extension: 1000 mm travel.
•
Bi-energy: for non-all-terrain models (H12SDE - H15SDE), electrical power is supplied by 24 V DC drive
batteries.