NEXUS STATION | TECHNICAL OPERATIONS AND MAINTENANCE GUIDE APR/2017
49 INSIDE COMPONENTS AND ELECTRONICS | ROLLER AND KEY GROOVE
2 Place a
3
/
32
-inch Allen key between the roller and the edge of the turnstile base, as shown. Hold the
Allen key in place as you turn the Nyloc nut to the right to increase the tension between the roller
and the turnstile base until the Allen key stays in place with the Nyloc nut released.
3 After releasing the Nyloc nut, carefully remove the Allen key from between the roller and turnstile
base. The Allen key should be removed with minimal resistance.
4 Verify that the top of the roller is aligned with the upper edge of the turnstile base, as shown. If the
two components are not properly aligned, loosen the set-screw with an Allen key, and adjust the
roller up or down as necessary to achieve proper alignment.
Key stays in place
when Nyloc nut is
pressed.
Key can be removed
with minimal resis-
tance.
Tighten the Nyloc nut
Correct alignment: upper edge of roller matches the
upper edge of the turnstile base.
Set-screw location
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