Aprimatic ONDA 424 Instrucciones Para La Instalación página 21

5.2 FIXING THE BAR RACK
The rack for the ONDA 424 gearmotor is a moulded
thermoplastic material supplied by Aprimatic: consult our
Price List/Catalogue. The rack has a steel core and can
move gates of up to 500 kg. It can be easily mounted
without the need for any soldering or welding.
Caution
Assembly must be carried out in accordance with the
following criteria to ensure smooth operations and the
long working life of the automated gate:
• The different components of the rack must be well
aligned with each other;
• The pitch between the teeth must be kept constant
in the joints.
• The rack height must be respected (Fig.18) and
adjusted so that the wing never weighs on the
gearmotor.
• NEVER lubricate the rack.
A new base may need to be created if the gate base is too
low for rack assembly. Fig.19 shows an example of a base
created via a section bar.
The plastic rack is normally fi xed to the gate using the
supplied screw (4 tapping screws for each metre length
of bar rack).
We recommend using these screws to prepare holes
in function of the thickness and material of the resting
surface, according to the following table:
Thickness
mm
Steel/Brass
1,5 ± 1,9
Ø 5,2
1,9 ± 2,7
Ø 5,3
2,7 ± 3,4
Ø 5,8
3,4 ± 4,8
Ø 6
4,8 ± 5
Ø 6
Warning
Ensure that the screws are fi xed to strong points when
using wooden wings.
Fixing:
• Reset the initial part of the rack on the pinion of the
gearmotor, place a level above the bar rack and, when
this indicates a horizontal position, use a pencil to
mark the position of the slots for making the holes
(Fig.20).
• Remove the rack and make preparatory holes to the
diameter given in the table (Fig. 21).
• Replace the bar and fi x it with the special tapping screws
(Fig.22-Ref.A) supplied, being careful not to completely
tighten them and constantly checking the horizontal position
of the bar with a level.
• Proceed by fi xing the other components of the rack as
shown (Fig.23).
Warning
Always check with a template (Fig.24 A) that the pitch
between the bar linkages is kept even.
Material
Aluminium
Ø 5,1
Ø 5,2
Ø 5,3
Ø 5,4
Ø 5,6
- EN 7 -
Fig.18
Fig.19
Fig.20
Fig.21
Fig.22
Installation
A