Operating Istructions & Installation

OPERATING INSTRUCTIONS & INSTALLATION

PRECAUTIONS DURING THE HYDRAULIC CONNECTION
Check that the valve type meets the application. Don’t exceed the specification shown on the valve label.
Check that the fluid is in the same direction as the arrow stamped on the valve body and that the pipes are compatible to the flow rate of the valve. Check that the pipes are clean and, if possible, fit a filter before the valve.
When connecting the valve make sure that no foreign matter and sealing materials such as tape and jointing paste get inside the valve, as this could obstruct the internal pilot holes.
Apply force only on the body valve when making connections using a wrench. Avoid the coil area.
The solenoid valve can works in any position but, in order to avoid the evenctual precipitation of impurities inside the armature tube, is reccomended , even possible, with the coil positioned above a horizontal pipe run.
When the valve has to be connected by flexible tubes, is reccomended to use the fixing holes provided into the body valve ( only on direct acting from 1/8″ to 1/2″).

PRECAUTIONS DURING THE ELECTRICAL CONNECTION
Check if the electrical data on the coil is compatible with the electrical supply.
The Direct Current valves don’t require a fixed polarity with the exception of the bi-stable types.
To help the heat dissipation of the coil, put the valve in a ventilated environment away from any other heat source.
It’s possible that the coil’s working temperature could, in conjunction with ambient and fluid temperatures, cause burns.
It’s reccomended an appropriate protection of the coil from water and humidity.
The coil fixing nut should not be over tightened. Don’t exceed a torque more than 1,5Nm.

MAINTENANCE
Coil can be changed without removing the valve from the system.
Spare parts are ready available for all wearing valve components.
When replacing the armature tube do not exceed the following tightening torque:

Before removing the valve check that the power supply has been switched off and that no pressure is present in the pipeline.
If the valve needs to be clean pay special attention to the seat area to avoid any possible damage.
The armature must moves freely inside the armature tube. If it’s not achievable due to encrustments, scales or worn surfaces
Seals must be replaced if swollen or damaged with incision etc.
The diaphragm pilot holes must not be blocked in order for correct operation of servo-type valves. Check that both the holes are clean.
Check also that the diaphragm has not hardened, swolled or shows wear in the seat seal area. Replace if necessary.

GENERAL PRECAUTIONS
When the solenoid valve is used on machines or equipment with high mechanical stress ( for example vibrating stress), please contact the manufactorer or verify by appropriate life and functionality tests.