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7.Assembly and Disassembly
15
Proceed with caution. There is danger of personal injury.
Never disassemble the valve screws without reading the instructions thoroughly.
Assembly and disassembly of the valves / actuator must only be carried out by qualified staff.
When assembling the diaphragm it is very important to comply with the sequence of steps,
as otherwise, the diaphragm may be damaged. In particular, do not fully tighten the body
until the diaphragm is in the closed position. Otherwise, the diaphragm may deform and be
damaged when the valve is closed.
7.2.
PROCEDURE FOR ADJUSTING TO CLOSURE OF THE MANUAL VALVE
The following procedure must be carried out when the valve is completely assembled ( dia body).
Not
available for size nº 4
1.
Remove the cap (07) with a spanner.
2.
Supply water under pressure to only one inlet of the valve (maximum pressure according to chapter 8 of
Technical Specifications
).
3.
Turn the handle till the end but without forcing it too much to avoid an excessive compression of the
diaphragm.
4.
With the spanner, tighten the self-locking nut (26) against the lower piece.
(Or place the self-locking nut at a required height to ensure a minimum required flow).
5.
Open and close the valve several times to ensure that the position of the “mechanical stopper” is correct.
6.
Turn off the water supply.
7.
Assemble the cap (07) with a spanner.
To ensure a correct operation of the seal adjuster, it is necessary to repeat the procedure
every time the maintenance tasks are carried out or when the diaphragm is changed.
The following tools are required to disassemble the valve.
•
Allen key 8mm and 16mm for size nº1
•
Allen key 10mm and 25mm for size nº2 / nº3
