Mechanical Installation; Dimensions Of Gate And Operator; Post Bracket Position And A&B Dimensions - LiftMaster LA250EVK Manuel D'installation

5. MECHANICAL INSTALLATION

Herewith you start mechanical installation of the gate operator.

5.1 Dimensions of Gate and Operator

LA250EVK
830 (max.1150)
Ø 8.5
60
100
Ø10
LA250EVK
1.5 m 250 kg
2.0 m 200 kg
2.5 m 150 kg
5.2 Post Bracket Position and A&B Dimensions
Determine the A and B dimension based on the opening angle provided in Table 1 to confirm the position where the post bracket will be mounted.
1. To ensure that the motor does not touch the pillar, please define your C dimension using B-60 mm formula.
2. For optimal mechanical advantage A and B dimension shall be equal or not differ by more than 40 mm.
NOTE: Smaller A and B dimensions determine higher peripheral speed of the leaf. Higher differences between A and B dimensions cause greater speed and force variati-
ons during the gate opening and closing movement. It is always good practice to use all available travel of the operator.
All crushing points must be secured by an entrapment protection according to EU: EN 12453, EN 60335-2-103; GB (UK, NI): BS EN 12453, BS EN 60335-2-103.
Table 1:
LA250EVK with external hardstop,
using max 300 mm travel
A
mm
100 120 140 160
100 n.a. 110° 105° 105°
120 110° 110° 100° 95°
B
140 100° 100° 100° 90°
160 95° 95° 90° 85°
180 90° 90° 80° 75°
Example installation
A
Gate Post
C
Gate Operator
Post Bracket
A
Gate Post
Gate Operator
Post Bracket
85
33
24
125
180
100°
95°
80°
75°
70°
Gate
Gate Bracket
Gate leaf bracket extension shall be coside-
red in case the pivoting point of the gate is not
centered with the gate leaf.
Gate
Gate Bracket
LA300EVK
55
92
60
Ø8.5
LA300EVK
2.0 m
2.5 m
3.0 m
Table 1:
LA300EVK with internal hardstop,
using max travel 300 mm
mm
100
120
B
140
160
180
Example installation
Gate Post
Post Bracket
Gate Post
Post Bracket
5
Max. 350 mm (w/o hardstops)
350
Max. 300 mm with hardstops
835
20 100
40
60
85
300 kg
250 kg
200 kg
LA300EVK without internal hardstop,
using max travel 350 mm
A
100 120 140 160 180
n.a. 110° 105° 105° 100°
110° 110° 100° 95° 95°
100° 100° 100° 90° 80°
95° 95° 90° 85° 75°
90° 90° 80° 75° 70°
A
Gate
C
Gate Operator
A
Gate
Gate Operator
95
Ø10
66
Ø10
30
A
mm
100 120 140 160
100 n.a. 120° 120° 120°
120 115° 115° 115° 110°
B
140 105° 110° 110° 105°
160 100° 100° 100° 95°
180 95° 95° 95° 90°
Gate Bracket
Gate leaf bracket extension shall be coside-
red in case the pivoting point of the gate is not
centered with the gate leaf.
Gate Bracket
180
120°
100°
100°
90°
85°