Warner Electric ER-1225 - Manual (Page 6)

6 Warner Electric • 800-825-9050 819-0466
Step 5: Position the aluminum spacer/magnet
assembly on the motor pilots and align
the holes in the spacer with the holes
in the motor and magnet . Following
the manufacturer’s instructions, apply
grade 242 Loctite to the threads of each
furnished cap screw, add a lock washer,
and fasten the spacer/brake assembly
on the motor . Tighten these screws
to 25 to 28 lb .ft . torque with a torque
wrench .
Make the electrical connection . The positive and
negative of the power lead must be connected to
the positive and negative lead wires or terminals
of the brake, respectively . Follow KONE Inc .
instructions to set the release voltage of the brake .
Step 6: Place the armature hub assembly on a
flat surface with the armature’s working
face up . Push down on each detent
cup (Item 6) with your fingers, sliding the
armature down until the armature will
move no further . (See Figure 3)
Armature
working
surface
Figure 3 - Positioning detent cups
in armature .
Step 7: Insert the taperlock bushing (item 1) into
the hub (Item 2) . Align the two half-drilled
holes in the taperlock bushing with the
two half-threaded holes in the hub . Insert
two set screws (Item 12) into the aligned
holes and screw them in loosely to
maintain alignment during assembly .
(See Figure 1)
During Steps 8, 9, and 10, handle
the armature/hub assembly by the hub (Item
2) only, making sure the armature (Item 3) is
as close to the hub (Item 2) as possible. Any
movement of the armature on the pins (Item 4)
will reduce available armature travel and may
cause improper air gap setting.
Keep fingers clear of the area
between the magnet (Item 11) and the armature
(Item 3) because the armature will be pulled
sharply toward the magnet after the gap is
closed to approximately 1/8 inch. Injury can
result if fingers are pinched between the
armature and the magnet.
Step 8: Insert the key into the motor shaft key way .
Step 9: Make sure no power is applied to
the brake. Place three steel shims 120
degrees apart on the magnet as shown in
Figure 4 .
0.062 inch shims are
recommended. Do not use shims thicker than
0.125 inch or you will shorten the brake life by
reducing available armature travel.
Slip the armature hub assembly onto the motor
shaft until the armature makes contact with the
shims . (See Figure 4) Using a drift, lightly tap on
the taperlock bushing at several points around the
circumference with a small hammer until it will not
slide further onto the shaft . (See Figure 5)
Keep fingers
away from
this area
Shims
Figure 4 - Installing armature with
shims in place.