This articulated or folding arm is specially designed to control vehicular traffic in private and public underground parking areas where headroom is insufficient. These ruggedly constructed and well engineered arms will extend up to 12 ft. (3.66m) in the “down” position, yet easily clear a 7’6″ (2.29m) ceiling when “up”.
The arms link assembly is made with precision machined parts rotating in oil impregnated “oilite” bushings for long and friction-free life.
The gate arm is made of 1″ x 6″ (2.54cm x 15.24cm) clear wood such as white pine, painted in black exterior paint. Fitted on both sides with diagonal yellow stripes for easier visibility. Arm has quick-change clamp to facilitate replacement if broken, without having to dismantle the drive system. The gate arm is counterbalanced with steel weights for effortless smooth operation.
Doorlec model TCBOA has a synchronized double-linkage drive assembly. Engineered to withstand the abuse of continuous operation.
Thermostatically-controlled, 500 watts heater ensures normal temperature in the cabinet during extreme weather conditions, prevents freezing of oil in the speed reducer and eliminates humidity on electrical components.
Will accept, when specified, any optional equipment for fully-automatic operation.
Constructed of 10 ga. C.R. steel, welded together with all seams ground smooth. Two lockable access-doors are located on side opposite to traffic for easy maintenance and service. Top cover of housing is also removable to facilitate adjustment to limit-switches and drive mechanism.
Barrier housing is primed with rust-proof primer and spray-painted in gold-tan baked enamel.
Made by V-belts and pulleys for primary reduction. Worm-gear reducer, single-stage 60:1 ratio for secondary reduction to barrier drive-shaft. Barrier angular speed: 32o/second. Opens or closes in less than 3 seconds.
Momentary-contact type for up, down, stop. Operator may be stopped in any position and barrier moved up or down from that position. Down button can be wired for constant pressure when specified. Control circuit: 24V. A.C. for user’s protection, Class II.
Rotary-type cams mounted on output drive shaft, on their preset travel activate the micro switches to cut power of motor in both up or down directions. Operating force on limit switches: 4 oz. (113.4g) maximum. Contact separation: .020″ (.05cm). terminations: .25″ (.6cm) quick connect.
1/3 H.P. (249W) 120V. or 240V. single-phase with manual reset over-current or under-voltage protection.