Residual Risks; Operation Sequenze For The Shut-Off Valve Adjusting - MARANI ITS80B Manual De Instrucciones De Uso Y Mantenimiento

7.0 RESIDUAL RISKS

Despite MARANI taking all due precautions in the design and construction stages to eliminate any dangers to operators, some
risks remain unavoidable in the operation of the machine.
1) HOOKING AND CRUSHING RISK between the support vertical rod of the reel and the reel itself when this is
rotating. This risk exists especially during the laying down of the hose.So before starting this operation make sure that
nobody is near the machine and that only authorised persons are in the work area.
2) RISK OF CRUSHING AND TRAPPING BETWEEN PE HOSE AND REEL. No part of the body should be be-
tween the hose and the reel when the machine is in operation. Unauthorised people should have no access to the ma-
chine.
3) RISK OF THE MACHINE OVERTURNING. If the machine is transported on land having a gradient higher than
6°, there are high risks of the machine overturning.
4) RISK OF SUDDEN ROTATION OF THE REEL TURRET. During the positioning of the machine, if on a slope,
there is the risk of sudden and uncontrolled rotation of the reel turret. To operate in these conditions the machine must
be equipped with a hydraulic or mechanical device for turret turning (kit upon request) or the rotation operation must
be carried out by two persons in order to control the turret turning.
5) RISK OF MACHINE OVERTURNING DURING THE ROTATION OF THE REEL FRAME. If the machine is
equipped with a spray boom instead of rain gun trolley, the PE hose must be filled with water before lifting the spray
boom with the special trailer and before turning the turret, in order to make the machine stable.
6) RISK OF FLASHOVER.
If the water jet of the rain gun comes accidentally in contact with electric power lines there is high risk of electrical
discharges to the ground through the machine structure. Make sure that in the rain gun radius of action there are no
electric power lines.
7) RISK OF VIOLENT IMPACT WITH THE WATER JET. When the machine starts the water comes out suddenly
and violently from the nozzle. Do not stay in front or near the rain gun.
8) RISK OF VIOLENT IMPACT WITH THE MACHINE END CAPS. Never remove the end caps from the machine
without being sure that there is no pressure in the machine. If the caps are removed when the machine is under pres-
sure there is high risk that they will be ejected violently.
9) RISK OF VIOLENT IMPACT WITH THE HYDRAULIC CIRCUIT OIL. Never use the hydraulic circuit without
having first exhausted the oil pressure through the hand pump or through the spool valve levers.
10) DANGER OF ACCIDENT ON A PUBLIC ROAD. Position the rain gun trolley so that the water jet never goes
into areas thus causing dangers to
persons or property
8.0 USE OF THE SHUT-OFF VALVE (optional )
If the machine is equipped with shut-off valve, proceed as
follows:
1) Check that the butterfly valve is completely open by
pulling the special lever (fig.32).
2) Check that the speed adjusting valve is completely clo-
sed (fig. 33).
3) Increase the machine pressure as for standard irrigation.
8.1 OPERATION SEQUENCE FOR THE SHUT-OFF VALVE ADJUSTING
1) Simulate the limit stop by pulling the special lever.
2) Open the speed adjusting valve till the desired shutting speed is reached.
When using machines with water inlet shut-off valves, the pumping systems must be provided with a cut off system at high
pressure. If the pumping systems do not stop an excessive pressure in the machine and in the pipe-work could be generated .
Fig.32
Fig.33
GB
21