Installation; Positioning Of Mountings; Preparing The Rear Mounting; Preparations For Rear Operator Mounting On Iron Posts - Aprimatic ZT42 Serie Instrucciones Para La Instalación

Installation

3.1 POSITIONING OF MOUNTINGS

The following table (C1) gives the recommended data for fi xing the position of the operator mountings in relation
to the center of rotation of the gate leaf.
The distances A and B will give:
• The useful stroke length (C) of the piston
• The peripheral speed of the gate leaf
• The angle of maximum opening of the gate leaf
• The holding capacity of the lock in relation to distance E (which must always be less than B when the operator
is fi tted with a hydraulic lock); the distance E is obtained, in practice, by measuring the distance between the
front attachment fulcrum to the gate hinge axis (see fi g. C1)
Caution
• The sum A+B corresponds to the useful stroke length of the piston (C) for a 90° opening of the
gate leaf.
• The minimum value of distances A and B is 70 mm, and the maximum is 130 mm.
• If possible, distances A and B must be equal in order to have a uniform peripheral speed.
• If the gate leaf is to open by more than 90°, fi rst of all fi nd the best A and B measurements for mounting,
and then reduce distance B to the desired opening angle, making sure, by checking the distance Y, that
the corner of the post doesn't interfere with the operator action.
!
Warning
• The greater the distance B in relation to E, the more effi cient the holding capacity of the hydraulic
lock (for all types of operator).
• If the gate leaf is closed with an electric lock, then E must always be less than or equal to distance
B (never greater).
C1

3.2 PREPARING THE REAR MOUNTING

3.2.1 Preparations for rear operator
mounting on iron posts
Clean the welding zone for the rear mounting perfectly
with the correct tool (C2 pos. 1); be especially sure to
remove any traces of paint or zinc coating.
Place a strengthening plate of minimum thickness 5
mm (C3 pos. 2) on the column, covering it from edge to
edge, in the rear mounting welding zone.
The size of the strengthening plate must be in proportion
to the size of the column.
For the fi nal fi tting of the mounting (C3 pos. 3), see the
section: "fi tting the rear operator mounting", chapter
3.4 in this manual.
1
2
1) wing rotation axis
2) operator centre of rotation
- 18 -
DISTANCES IN MILLIMETERS
L A
1200
÷
ZT 44 130
4000
ZT 42 1200 90
C2
R
C
B Y Max.
140 275 90
100
190 40
C3