WG20 Instructions 7
The installation must be carried out by qualified and skilled
personnel in compliance with the directions provided in chapter
1 "WARNINGS".
3 Installation
3.1
Preliminary checks
WG20 must not be used to power a gate that is not efficient and
safe. It cannot solve defects resulting from incorrect installation
or poor maintenance of the gate.
Before proceeding with the installation you must:
• Make sure that the weight and dimensions of the gate fall within
the specified operating limits. If they do not, WG20 cannot be
used.
• Make sure that the structure of the gate is suitable for
automation and in compliance with regulations in force.
• Make sure that there are no points of greater friction in the
opening or closing travel of the gate leaves.
• Make sure that the gate is well balanced: it must not move by
itself when it is placed in any position.
• Make sure that the mounting positions of the various devices are
protected from impacts and that the surfaces are sufficiently sturdy.
• Make sure that the mounting surfaces of the photocells are flat
and that they enable the proper alignment between TX and RX.
• Check the size limits referring to Figure 10.
• Make sure there is enough space even when the gate is open.
• Using the leaf opening angle as a guideline, check that the
values in Table 6 can be met.
Figure 10
Figure 11
• "C" depends on how the rear bracket is mounted (see Figure 17) and
may vary from 53 mm to 176 mm. It is normally about 150mm.
• "D" is easy to measure on the gate.
• "A" is the sum of "C" and "D".
• The value of "B" can be calculated from the value of "A" and the
opening angle of the leaves. For example: if "A" is 150mm and the
opening angle of the leaves is 100°, the value of "B" is about 150mm.
Make sure that "B" is equal or similar to "A". This ensures the leaf moves
smoothly, thereby reducing the strain on the gearmotor.
Table 6
Figure 12
Maximum leaf weight (Kg)
Maximum leaf length (m)
