During ordinary maintenance, which must be carried out while the yacht is in dry shore, it is recommended to extract the valve control block as follows: make sure that the indicator is positioned to SEA-OPEN (first turn the handwheel counterclockwise).
Loosen the screws with an Allen wrench and extract the mechanism from its body, paying special attention to the rubber components (gaskets).
DO NOT remove the handwheel from its seat!
If necessary, clean the rubber components with fresh water and soap, do not use any chemical cleaners and pay attention not to damage the gaskets. If necessary, the control block can be replaced with a new one.
When reassembling, use silicone grease, and pay special attention to the seats of the gaskets.
Make sure to insert the mechanism in “APERTO MARE - SEA OPEN” position (first turn the handwheel counterclockwise as indicated in the INSTRUCTIONS).
Tighten the screws with a torque of approx. 9 Nm.