Vetus HL12500A Instrucciones De Instalación Y Manual De Operación página 9

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1 Introduction
An electro-hydraulic lifting system basically consists of one
electro-hydraulic pump (EHP) with built-in non-return valve and
one cylinder.
A second cylinder can be fitted to the lifting system as an
optional extra. *
The electro-hydraulic pump (EHP) is already fitted with a pres-
sure valve. This valve prevents damage to the lifting system
caused by (short-term) excess lifting pressure (exceeding the
lifting system design limits).
Following the recommendations below will result in an
increased operating life and better performance of the electro-
hydraulic lifting system.
• Use only the type of hydraulic oil specified in the Technical
Data.
• Check for correct battery voltage.
• Reduce cable voltage loss by fitting cables with sufficient
cross-section.
• Carry out the specified maintenance regularly.
*) See p. 39 for hydraulic schemas.
Electro-hydraulic lifting system
2 Operation EHP with a reversible
motor
The EHP consists of an oil pump (driven by a reversible elec-
tromotor), a non return valve, relief valves, suction valves and a
tank.
Depending on the rotation direction of the electromotor, the oil
is pumped from one side of the piston to the other side of the
piston - and vice versa.
**coupling with built-in throttle
3 Safety
General regulations and laws concerning safety and the pre-
vention of accidents should always be taken into account.
• Always keep out of the way of moving parts when operating
the electro-hydraulic lifting system.
• Always stop the EHP before inspecting or adjusting compo-
nents of the electro-hydraulic lifting system.
• Always make sure that nothing can get trapped in the
machinery.
ENGLISH
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Hl12500bHl24500aHl24500b

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