T 3000 - T 350
2
Drawing 16
a = 2 springs
b = 3 springs
It is not permitted to operate the barrier with only one spring mounted!
4. Spring tension: In position OPEN the pressure springs should be without
pre-tightening but also without play between the spring plate and the
pressure spring. If necessary, correct the boom position by
tightening/loosening of the spring tension.