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execution of the project to which it refers, and from communicating it to third parties without Automatic Systems’ prior written agreement. Document subject to change without notice.
BL3x-MT-EN-08 page 47/59
6.5. Changing the arm model or the spring
• Your barrier type BL32/BL33 has been factory-adjusted according to the arm boom mounted on it. Should
you decide at a later stage to mount an arm of a different length, follow the instructions below.
-- Make sure that the arm tube to be replaced is mechanically locked in its open position.
-- Mount the new arm referring to
paragraphs [5.3 to 5.5Installing the arm]. At the end of the mounting
procedure, the barrier arm will be in the closed position.
-- Raise the arm with the crank (
1:10) up to the vertical position again. Continue turning the crank to
make sure that the mechanism is locked.
30:3
Fig. 30
30:4
30:1
30:2
x
30:6
30:7
30:5
-- Loosen the two lock nuts (
30:1) then the two nuts (30:2) to release the spring(s) to the maximum.
-- Position the axle (
30:3) and/or the screw (30:4) on the lower fixing points (30:5) 1 to 5 and upper (30:6)
a or b as illustrated in Fig. 30 and 31, referring to the table on next page.
-- Tighten the two nuts (
30:2) according to the distance "x" shown in the table, depending on the new
arm, and lock them with the two nuts (
30:1).
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