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8. Daily Inspection and Maintenance
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FB-01A1, FB-02A1, FB-05A1 (Outdoor Type)
Code
Part Name
1
Armature plate
2
Brake lining
3
Spacer
4
Attachment bolt
5
Fixed plate
6
Fan
7
V-ring
8
Shaft retaining C-ring
9
Boss
10
Leaf spring
11
Cover
12
Waterproof cover
13
Waterproof cover attachment
bolts
14
Waterproof seal
15
Spring
16
Electromagnetic coil
17
Stationary core
18
Bearing
19
Motor shaft
20
Fan set screw
Note : FB-01A1 does not come with [6][7][20].
2
3
4
6
7
8
1
5
11
10
20
9
13
12
14 15
16
17 18 19
Ｇ
-
Gap Inspection
(1) Remove the cover [11].
(2) Loosen the fan set screw [20] and remove the fan [6].
(3) Remove the waterproof seal [14].
(4) Insert a gap gauge between the stationary core [17] and the armature plate [1],
and measure the gap. Measure in 3 locations around the circumference.
(5) Adjustment is required if the gap value is near the limit.
-
Gap Adjustment
(1) Remove the cover [11].
(2) Loosen the fan set screw [20] and remove the fan [6].
(3) Remove the waterproof seal [14].
(4) Pull off the V-ring [7].
(5) Remove the waterproof cover attachment bolts [13], and remove the waterproof cover [12].
(6) Slightly loosen the attachment bolts [4] and rotate the fixed plate [5] counter clockwise, as far as it will go.
Then tighten the attachment bolts [4]. After tightening, measure the gap (G) and check to see if the gap value
is between the required value and the limit. (This operation will reduce the gap by 0.3 mm.)
(7) Attach the waterproof cover [12] using the attachment bolts [13]. Attach the waterproof cover [12] so that the
gap (A) between its hole and the motor shaft [19] is nearly uniform around the circumference.
(8) Clean the surface of the waterproof seal [14] to remove impurities.
(9) As shown in the construction diagram, install the waterproof seal [14] between the stationary core [17] and
the waterproof cover [12]. Insert the waterproof seal [14] with its arrow mark pointing toward the load side. (Align the hole in the
waterproof seal [14] for the release bolt with the position of the release bolt.) Attach the waterproof seal [14] so that its protrusion
fits snuggly around the entire circumference of the groove for the stationary core [17]. Otherwise water could leak in.
(10) Turn the power on and off to check brake action.
(11) Attach the V-ring [7]. Wipe off the lip and surface near the lip of the V-ring [7], lightly coat the the lip contact surface with grease
and attach. Observe the attaching dimension (B
=
4.5mm).
(12) Attach the fan [7] and cover [11]. Use a fan set screw [20] coated with Three Bond TB2365 (Sumitomo part number
EW444WW-01), and tighten to a torque of 0.3 – 0.5 N·m.
Note : If the the optional brake release bolt is installed, disassemble after removing the release bolt.
Gap value G (mm)
Required value
(original value)
Limit value
0.2 – 0.35
0.5
Ｂ
Ａ
Figure 8-22
