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ANDREOLI
ENGINEERING
Operator’s Manual
Self-propelled sprayer ATOM
137/166
7.13
CHEMICALS CIRCUIT VALVES
7.13.1
Solenoid sections valves
These valves act with a magnet.
1)
Ring nut
2)
O-ring
3)
Solenoid
4)
Cylinder
5)
Piston with spring
6)
Diaphragm
7)
Diaphragm housing
To check/clean the valve: remove the ring nut (1), pull out the solenoid (3), remove the cylinder (4) and
clean accurately the inner piston and spring, making sure to remove all dirt and incrustation.
The piston must move freely up and down inside the cylinder to ensure correct function of the solenoid
valve.
Make sure that the small hole on the diaphragm housing (7) is clean.
Check also the diaphragm conditions. Replace the diaphragm with original spare part if it is worn out.