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Verfügbare Sprachen
7.3. LIFT PULL arM HYDraULIC - PNEUMaTIC DIaGraM
The operating diagram of the hydraulic- pneumatic system of the lift pull arm is composed of the following main
components :
1)
Hydraulic-pneumatic pump for pull bar.
2)
Pull arm piston body.
3)
Bar traction valve.
4)
Traction release control valve.
5)
Check valve.
6)
Unidirectional valve.
7)
Pressure relief valve.
8)
Oil filter.
9)
Pump casing.
10) Air silencer.
11) Hydraulic-pneumatic pump oil tank.
12) Auxiliary fitting for oil use.
13) Compressed air intake.
• OPERATION:
When the pedal (3) on the hydraulic pneumatic pump (1)
is pressed, the pump casing (9) pressurises the hydraulic
circuit and sends the pressurised oil to the plunger chamber
of the pull arm piston (2) which tensions the bar.
When you wish to release the tension, press the pedal (4)
in the opposite direction, thus connecting the main duct to
the pump outlet and allowing the oil to flow to the tank (11).
In the absence of pressure, the piston will return to its rest
position due to the effect of the spring inside.
The pressure relief valve (7) prevents the pressure from
exceeding the value established by the manufacturer.The
relief valve must not be tampered with:
WarNING! alteration of the relief valve
will seriously damage the pull arm and
MULTIBENCH: SPaNESI S.p.a. declines all
responsibility for injury to persons and animals
or damage to property due to alteration of the
valve.
69
FIGURA 13 A
I
SCHEMA OLEO
BRACCIO DI T
FIGURE 13 A
GB
LIFT PULL ARM
PNEUMATIC D
FIGURE 13 A
F
SCHEMA OLEP
TIRAGE DE L'EL
ABBILDUNG 13
D
ÖLPNEUMATIK
ZUGARMS
FIGURA 13 A
E
ESQUEMA OLE
DE TIRO DEL L
86
EN
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