GILGEN AS-844 R Instructions De Montage Et D'exploitation page 17

3.3.2 Toothed steel rack directly screwed onto the gate
Assembly procedure as described in chapter 3.3.1. Instead of the
welding procedure, mark and drill the holes and cut the thread.
Attention:
Prior to drilling make sure that no other elements
can be damaged or hindered. If for example carrying
wheels or guideway rollers are passing nearby
which would touch the screws, this assembly version
cannot be used
two assembly methods.
3.3.3 Toothed steel rack on Gilgen aluminium profile
according to drawing B1-0731-110
- Mount the existing aluminium profiles (pos. 1) acc. to illustration
to the gate leaf (using at least every fifth slot).
- Provisionally fasten the toothed rack section (6) against the
aluminium profile (1), lift it up completely and slightly fasten it by
means of the two outer screws (7).
- Release the drive unit (see chapter 5).
- Slide the gate leaf open by hand
- Loosen the screws (7) on the first toothed rack section and place
it on the outer extremity of the pinion. Tighten the screw (7) on
the level of the pinion.
- Manually move the gate in closing direction up to the other
extremity of the first toothed rack section and tighten the screw
(7) which is located there. Then tighten the center screw.
To fix the additional rack sections, which are necessary to reach
the closed position, proceed as follows:
- Line up another rack section to the last one fixed to the gate. To
check that the teeth are correctly spaced, use a section of rack
about 150 mm long as shown in Fig. 10.
- Manually move the gate in closing direction until the pinion is
located shortly before the end of the toothed rack section.
Attention:
Check that all the rack's sections work on the centre
of the pinion's teeth. If not adjust the position of the
drive unit.
- Tighten the screws (7) of the rack section.
After all the toothed rack sections have been mounted:
- By means of the four set screws M10 (pos. 6 of drawing B1-
0731-110), lower the drive unit by 1,5 mm (approx. 1 turn) in
order to allow for the necessary gearing play between the pinion
and the toothed rack (Fig. 9). Screw down the drive unit by
means of the four hexagon nuts.
- Check by hand that the gate is free to open completely and that
the leaf movement is smooth and with no stiff points.
Attention:
There must be a play of 1,5 mm in the engagement
between the pinion and rack (Fig. 9). If the gate is
new then check the engagement after a few
months. Never use grease or other lubricants on
the pinion and rack.
4680-999-04_2004.09.p65
select instead one of the other
4680-999/04
E
3.4 Positioning the travel stop plates
The AS-844 R drive unit is equipped with an inductive limit switch
(Fig. 18/item 3) which, when it detects the passage of a plate fitted
to the top of the rack, stops the gate movement.
Attention:
The distance between the sensor and plate must
be ≤ 5 mm (drawing B1-0731-105 or B1-0731-110).
For assembly version 3.3.3 special travel stop plates are included
in the supply which have to be fastened in the upper groove of
the Gilgen aluminium profile, according to drawing B1-0731-110.
In order to mount the two supplied travel stop plates correctly,
proceed as follows:
- Switch on the power supply.
- Slide the plate along the rack /aluminium profile in the opening
direction until the drive unit stops in the open position. Then fix
it to the rack or slightly screw it into the aluminium profile.
- Slide the plate along the rack/aluminium profile in the closing
direction until the drive unit stops in the closed position. Then
fix it to the rack or slightly screw it into the aluminium profile.
- Lock the system (see chapter 5).
Attention:
Before giving a signal ensure that the gate will not
move manually.
- Run a complete cycle of the gate to check that the travel limits
are working properly.
Attention:
To avoid damaging the drive unit and/or blocking the
automation system leave about 20 mm from the
mechanical travel stops.
- Complete the welding of the travel stop plates to the rack or
screw them into the Gilgen aluminium profile.
Note
Depending on the assembly direction "closing to
the left" or "closing to the right"), the motor con-
nection cables must be exchanged on the PCB.
AS-844 R
15-29