Operation and maintenance
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3 - OPERATING PRINCIPLE
3.1 - HYDRAULIC CIRCUIT
The Qu ick Up ma chine’s up /down mo vement is po wered by hydr aulic
energe fr om an e lectropump su pplied with 1 2V, 1 10V or 220V ( ref. 2
page 35).
This pump supplies a single action lifting jack.
Circuit pressure is limited to 144b by a pressure limiter (ref. 3 page 35).
A suction filter protects the installation from pollution.
Lifting speed depends on pump output.
Lowering speed depends on the output regulator (ref. 5 page 35) built into
the lifting jack; the jack is lowered under the effect of the weight of the load
when the electrovalve lower command is a ctivated (ref. 4 page 35). This
electrovalve is equipped with a manual emergency command in the event
of control solenoid failure.
3.2 - ELECTRIC CIRCUIT
The ele ctric powe r used to drive the ele ctropump an d su pply th e
commands comes from a 12V 100Ah battery or 110 or 220V mains supply.
The electric circuit has two separate parts:
• power circuit, for electropump operation: 12V or 110V or 220V.
• control circuit: 12V for supply of commands and safety systems.
3.2.1 - Stabiliser control
4 detectors establish authorisation enabling platform lifting.
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