Warner Electric ATT Tension Brakes - Manual (Page 7)

7 Warner Electric • 800-825-9050 P-221 • 819-0338
Note: Use only the screws included with
the repair kit since any other screws may
damage the unit. Tighten to 18 to 22 lb. in.
torque.
8. Insert the two new armature segments.
9. Attach the new armature segments to the
cast iron carrier with hex cap screws,
lockwashers and washers. Apply one drop of
Loctite (grade 290 or equivalent) to each
screw. Tighten to the appropriate torque for
your size unit.
Size Torque
ATT 25 29-35 in.-lbs.
ATT 55 60-84 in.-lbs.
ATT 115 60-84 in.-lbs.
10. Ensure there is a 1/16" gap between the
friction faces.
11. Your ATT brake is now ready for its static
test. Apply DC voltage to the coil through
the brake control. The armature should
pull against the friction material face with
an audible “click”.
12. Run the brake under its operating load.
13. Your ATT brake may not achieve its full torque
until after a short “break-in” period. To break
in the brake, cycle it on and off under full load
at operating speed a minimum of ten times in
quick succession.
Your ATT brake is now ready to run.