Changing The Length Or Type Of Beam - FAAC 620 Installation Manual

Ja nu a ry , 2 00 7
6 2 0 /6 40 O pera t or A nd
6 2 4B LD C ontr ol Pa ne l Ins talla tio n M a nual
C L
HANGING THE ENGTH OR
B
EAM
WARNING! Do not install the barrier in such a
way that the beam moves within 2 feet (610 mm)
of a rigid object.
Changing the length or type of the beam requires
installing a different balancing compression spring.
Make sure you have the correct compression spring
(designed for a particular weight of beam).
The installer is responsible for making sure that the
compression spring is the correct spring for the barrier
beam.
The following tables show which springs are designed
for various beam types and lengths. To check for the
part number of the compression spring in your barrier,
check the tag attached to the spring previously
installed.
If it is necessary for you to replace the spring in a
cabinet with another compression spring, do the
following. First, turn off the main power to the operator
and then open the cabinet panel. Turn the Manual
Release key counterclockwise. Then move the beam by
hand to the fully opened position.
Rigid Beams: Part Numbers of Compression Springs for Various Lengths
Beam and Required
Spring
Redwood Beam, ft
Rigid Aluminum
Beam, ft (m)
FAAC Part No. for
Compression Spring
Skirted Beams: Part Numbers of Compression Springs for Various Lengths
Beam and Required
Spring
Skirted Aluminum
Beam, ft (m)
FAAC Part No. for
Compression Spring
T B
YPE OF ARRIER
620 Barrier Systems
8–10 12–14
6 (2) 8 (2 1/2)
7210855 7210695 7210705 7210885 7210735 7210745 7210755 7210805
620 Barrier Systems
6 (2) 8 (2 1/2) 10 (3)
7210695 7210715 7210735 7210745 7210795 7210805 7210815 7210825
Unbolt the piston with the compression spring from the
rocker arm. Then very carefully unscrew the cap holding
the compression spring by hand to the left to remove
the spring from the piston. Remove the spring from the
piston.
NOTE: Hold the bottom of the piston cylinder to
keep the piston rod from sliding out of the
cylinder.
Install the correct compression spring by placing it over
the piston and screwing it into place with adjusting cap.
Then bolt the piston to the rocker arm and reinstall the
steel cross member.
turning the Manual Release key clockwise.
Be sure to recheck the tension of the compression
spring before you turn on the main power to the
operator. Then be sure to adjust the hydraulic
pressures.
16 NA 16–18
10 (3) 13 (4) 13 (4)
13 (4) 13 (4)
P a g e 1 3
Re-engage the hydraulics by
640 Barrier Systems
18–20 20
16 (5) 20 (6)
640 Barrier Systems
16 (5) 20 (6) 23 (7)
NA
23 (7)