MECHANICAL PARTS | DOOR ACTUATOR AND MOTOR 22
APR/2017 TECHNICAL OPERATIONS AND MAINTENANCE GUIDE | NEXUS STATION
Door actuator and motor
The door actuator controls movement of the security door with the help of a motor that is attached to a
motor mount and plate. It is located at the front of the station, just below the front turnstile position.
Nexus Station door actuator and motor
Slide-gate assembly and motor arm
The slide gate assembly is controlled by the motor arm, which moves the slide gate to allow carriers to enter
and leave the turnstile in the station. It includes a motor that controls the movement of the arm that opens
and closes the slide gate. The rotary air-valve assembly sits atop the slide-gate assembly. Most of the parts
are made of durable metals that are not expected to require replacement under normal use.
The slide-gate assembly is attached to the top of the turnstile assembly at the top of the station, just
beneath the entry and exit pipe. The full assembly is housed within a rectangular air manifold that must be
removed for maintenance
Nexus Station slide-gate assembly, with rotary air valve
TABLE 1. Parts and maintenance for the Nexus Station door actuator and motor
Part No. Description Recommended maintenance
56742201 Door actuator–full assembly Lubricate the lead screw with Superlube every 100,000
cycles; replace the full assembly upon failure
TABLE 2. Slide-gate assembly and motor arm parts
Part No. Description Recommended maintenance
56740301 Slide gate–full assembly None
Lead screw
Motor
Plate—attaches to the security door to move it up and down
Motor mount—attaches to the lower turnstile assembly at the front
of the station
Base
Motor
Upper plate
Energy absorber and cap
Valve tube
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