Erreka VULCAN VU31LB Manuel De L'installateur page 49

Adjust the opening and closing force

The opening and closing forces must be
adjusted to fulfil standard EN 12453:2017 (for
further details, please ask "Final preparation"
on page 50).
Self locking models
None locking models

For both screws, clockwork rotation increases the
force. Anti-clockwork rotation reduces the force.
O
Do not tighten the regulation screws (2) to (3)
to the maximum, as this may cause damage.
1 Remove the caps (1) which cover the adjustment
screws.
2 CLOSING FORCE: yellow colour cap, screw (2).

The "Closing force" is, more exactly, the force
during the extension of the piston rod. In inward
opening installations, it corresponds to the closing
operation.
In outward opening installations, it corresponds to
the opening operation.
3 OPENING FORCE: white colour cap, screw (3).

The "Opening force" is, more exactly, the force
during the retraction of the piston rod. In inward
opening installations, it corresponds to the opening
operation.
In outward opening installations, it corresponds to
the closing operation.
4 Replace the caps (1), respecting the colours.
1 Remove the cap (1) which covers the adjustment
screws.
2 CLOSING FORCE: screw (2).

The "Closing force" is, more exactly, the force
during the extension of the piston rod. In inward
opening installations, it corresponds to the closing
operation.
In outward opening installations, it corresponds to
the opening operation.
3 OPENING FORCE: screw (3).

The "Opening force" is, more exactly, the force
during the retraction of the piston rod. In inward
opening installations, it corresponds to the opening
operation.
In outward opening installations, it corresponds to
the closing operation.
4 Replace the cap (1).
INSTALLATION
VULCAN hydraulic operator
49