Assembly Instructions / Fixing The Mechanism; Parachute Device Built Into The Reduction Unit - Nice HDF-45-95 Instructions Et Indications D'installation Et D'utilisation

GENERAL DANGER WARNINGS AND
PREVENTIVE SAFETY
According to the VDE 0113 booklet, the emergency stop
devices must also be perfectly efficient regardless of the
gearmotor operation mode. Any release of the emergency
stop device must absolutely not cause an uncontrolled or
undefined restarting.
ASSEMBLY INSTRUCTIONS /
FIXING THE MECHANISM
Gearmotor coupling
The gearmotor is to be coupled on the end of the winding shaft
that must be previously greased to make these tool­less assembly
operations easier. If the seat of the key on the shaft is through, the
key (tab) must be blocked to prevent accidental movement.
The winding shaft must not be axially secured to the gearmotor
(gearmotor side = mobile bearing). Fixing against an axial traverse of
the winding shaft is executed on the side opposite the ball bearing
using an adjustment screw or a fixing ring (fig. 1).
The fixing brackets enable assembly both horizontally (vertical
gearmotor) and vertically (suspended motor). For different assembly
positions and for different reduction unit fixing systems (different
heights of the fixing brackets and accessories of the rolling shutter
systems), contact the manufacturer. The fixing brackets are mounted
so that the winding shaft is horizontal.
It is important to ensure that the welded shafts are concentric and
aligned with the central axis of the main winding shaft since otherwise
the unbalances and angle defects that occur in this case could
cause damages or excessive wear to the transmission components.
If an additional coat of paint is applied on the gearmotor, carefully
avoid soiling the ring seals (oil seals) of the shaft. The key (tab) is to
be blocked on the through seat of the shaft with 1 screw (or, as an
alternative, with a fixing ring) to prevent accidental movement (fig. 2).
PARACHUTE DEVICE
BUILT INTO THE REDUCTION UNIT
The gearmotors are positive clutch startup controls with built­in
parachute device, irrespective of the rpm and position.
The parachute device follows the movement without load and wear,
and it releases in the case of failure of the mechanism.
No electrical disconnection is necessary because in the case of
failure of the mechanism, the transmission between motor, hollow
shaft and worm screw is interrupted.
After the release of the parachute device, the gearmotor is no longer
able to operate and must be replaced.
The parachute device has the following characteristics:
­ protection against the breaking and wear of the toothed wheel
­ it is independent from the rpm
­ it is independent from the direction of rotation
­ it is independent from the position
­ it is independent from the vibrations
­ it does not require maintenance
­ it has good damping capacity in the case of intervention
WARNING:
THE BUILT-IN PARACHUTE DEVICE DOES NOT PROTECT AGAINST
THE FORCES THAT INFLUENCE THE SYSTEM FROM THE OUTSIDE
4 – English
EMERGENCY MANUAL RELEASES
The manual emergency release is envisaged for opening and closing
the door in case of power failure, so it is to be used only in emergency
situations.
- Avoid regular use!!
Warning! Danger of injury in the case of incorrect use!
­ Deactivate the main switch before using the manual emergency
release.
­ The manual emergency release is to be executed only with the
motor stopped.
­ The manual emergency release manoeuvre is to be executed
from a safe place.
­ With a gearmotor equipped with brake (pressure), the main door
must be opened and closed with the brake open (released).
­ On doors not balanced with weights, the brake is to be released
only for checking purposes with the door in the low position for
safety reasons.
­ An undesirable brake release must be prevented with an adequate
check (measurement) on site.
The manual emergency release must not move the door beyond
the final positions because in this case the main switch would
activate.
Therefore, operation of the door in electrical mode is no
longer possible.
With a gearmotor complete with brake (pressure), it is necessary to
adopt an additional anti­fall measure since pursuant to the EN 12604
standard one brake alone is unable to offer sufficient protection.
Handle-operated manual emergency release (fig. 3)
­ Insert the handle exerting moderate pressure, then turn it up
to when it clicks in position. In this way the control voltage is
interrupted and the door can no longer be activated electrically.
­ Open and/or close the door turning the handle
­ The control voltage is reset and the door can again be activated
electrically by removing the handle.