4 – English
EN
ASSEMBLY INSTRUCTIONS / FIXING THE MECHANISM
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.
OVERTURNING MOMENT: The fall of the balanced door
wings by weights can be avoided if the gearmotor is still able
to support the wing weight even if the spring breaks.
This provision is based on the regulations of the National Insurance
Institute for Industrial Accidents BGR 232. The static overturning
moment is the maximum load allowed for the mechanism at the
time the spring breaks.
The Mstat static overturning moment is calculated with the following formula:
Mstat [Nm] = Wing weight [N] × cable winder drum radius [m]
Considering that two balancing springs can yield at the same time,
the
Commission of experts on the subject of building devices
recommends sizing the gearmotor so that it is able to support
- the total weight of the wing when there are one or two springs
- 2/3 of the weight of the wing when there are three springs
- 1/2 of the weight of the wing when there are four springs.
Pursuant to the directives mentioned above, the considerably greater
gearmotor breaking load is not to be contemplated in defining the
gearmotor sizing. In the case of cable winder drums of the scalar type,
the greater winding diameter is to be considered.
Consider the allowed forces of the cables!
- 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.
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.
Manual chain-operated emergency release (fig. 4 and 9)
- Movement to the right or left activates a microswitch that will cut
out the voltage going to the reduction unit, afterwards the main
door can be opened or closed by pulling the chain.
- After releasing the chain, the voltage will be restored and the
reduction unit will once again be operational.
Average duration: 200 cycles!
Manual chain-operated emergency release 2 (fig. 5a-d)
- Grasp the red handle / manual control (1) and softly pull until
stopping to interrupt the control voltage, and therefore prevent
activation of the door in electric mode.
- Open and/or close the door with the emergency release chain (2)
- Grasp the green handle /motor control (3) and softly pull until
stopping to restore the control voltage, and therefore once again
consent operation of the door in electric mode.
Average duration: 350 cycles!
Interlocking release (fig. 6)
- Pull the red cable to release the gearmotor.
- Manually move the door upwards or downwards.
- Pull the green cable to once again lock the gearmotor.
Modification of the length of the emergency release chain
(fig. 7)
- The emergency release chain opens in the connection point and
therefore can be extended or shortened by adding or removing
links.
- The links must be carefully bent.
- When the emergency release chain length is modified, it is
necessary to pay attention
Max. chain length: 14 metres - max. assembly height 8 m!!!
WARNING:
NOTE: with chains having lengths min. 15 metres it is
necessary to use the "2" chain release.
GENERAL DANGER WARNINGS AND PREVENTIVE
SAFETY
Clutch gearmotor
The gearmotor is to be pushed not too forcefully on the relevant part
of the previously greased flexible 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. 1)
There are fixing holes (on the bracket) o secure the support (bracket)
to the reduction unit flange.
Precise fixing of the support (bracket) is specified in the instructions
of the main door
(Fig. 2)
Fixing must be performed using 4 M 8x12 screws and the washers
supplied. Tightening torque must be 20 Nm. The support is to be
secured on the building side with 2 8/M10 screws.
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 braken open (released).
EMERGENCY MANUAL RELEASES
