Nexen BTBA-10 927409 - Manual (Page 6)

6 FORM NO. L-21180-E-0111
Refer to Figures 2 - 4.
1. Loosen the Pan Head Screws (Item 11) in the Endcap
(Item 3).
NOTE: Do not remove Pan Head Screws (Item 11)
completely from the Endcap.
2. Remove the Guard (Item 12) from the Endcap (Item
3).
3. Insert key into the machine shaft. Align the keyway on
the brake with the key on the machine shaft.
4. Slide the brake onto the shaft.
5. To prevent the brake actuator from rotating, place
an Anti-Rotation Pin (customer supplied) in any anti-
rotation hole. Align the pin with the anti-rotation slot
on the machine frame.
NOTE: Be sure that the Endcap (Item 3) does not move
in the direction of the rotation, but do not restrict the
Endcap’s movement in any other direction. Please note
that this is one of many methods that can be used. See
ANTI-ROTATION section for alternatives.
NOTE: Two threaded and two non-threaded anti-rotation
holes are located on the back of the Endcap (Item 3).
BTBA-10: on the Ø240.00 mm [9.449 in], 180° apart
BTBA-12: on the Ø300.00 mm [11.81 in], 180° apart
6. Tighten the set screws.
7. Reinstall the Guard (Item 12) on the Endcap (Item 3)
and hand tighten the Pan Head Screws (Item 11) in
place.
INSTALLATION
Figure 2
Pan Head Screw
(Item 11)
Guard
(Item 12)
Endcap (Item 3)
Figure 3
Anti-Rotation
Slot
Shaft
Machine
Frame
Endcap
(Item 3)
Figure 4
Rotor (Item 2)
DANGER
Remove all power from the fan
BEFORE removing the Guard.
Hazardous Voltage.
Will cause severe injury or death.