Pic. 8
Pic. 9
!
stroke C (mm) Liters of oil per actuator
280
0,5
400
0,8
500
1,0
600
1,2
700
1,4
800
1,6
900
1,8
1.000
2,0
MEC 700/80 Ventil motor pump:
single tank:
2,0
double tank:
4,5
FILLING UP WITH OIL
Once satisfied that piping (copper tubes and hoses) between actuator/s and motor pump is completed, make sure the all the nuts
and joints of the oil-hydraulic system are properly tightened.
At this stage, filling up MEC 700/80 Ventil with oil can be the next step: it is advisable that this operation be carried out with the
piston shaft fully out (gate closed).
THRUST POWER ADJUSTING
Depending on gate type (weight, length, in-filled, etc. ...) thrust power on opening and closing can be adjusted by means of the
screws controlling high and low pressure in MEC 700/80 Ventil motor pump.
By tightening the adjustment screws thrust power is increased.
NOTE WELL: it is most important that the pipes and hoses (ie. rigid and flexible oil-hydraulic connections) be properly
connected to the motor pump and the actuator as indicated in Pic. 7. Since each adjustment screw controls the pressure to
the nearest hydraulic joint, it is fundamental to make sure that the joint corresponding to the
red
screw be the one allowing
for the gate to close, while the
green one
is to control oil flow for the gate to open.
Topping up. Electrically operate the piston and the motor pump (it is therefore required that the electrical connections to the control
panel be executed first). In this way oil spreds through the entire hydraulic circuit: oil level in the motor pump can be seen to decrease
through the sight glass on each moviment of the piston; topping up to level is needed.
Remove this plug and
fill in with oil
Oil level
sight
glass
Red adjusting screw
controls oil pressure of this
joint: to be connected to the
actuator joint driving the
piston shaft out
Green adjusting screw
controls oil pressure of this
joint: to be connected to the
actuator joint driving the
piston shaft in
A 2 liters can of
power oil
N.W. the amount of oil contained in the pipes
between motor pump and actuator has not
been specified.
The motor pump
MEC 700/80 Ventil comes
without oil
MEC 800 Special
8
External oil-hydraulic operator for swinging gates
of large dimensions. With separate motor-pump.
E
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