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Section 11 |
NORD Motor Maintenance
and Troubleshooting
www.pflow.com
P 414 352 9000
F 414 352 9002
6720 N. Teutonia Ave.
Milwaukee, WI 53209
Brake
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Adjust the Air
Gap
The spring-applied brake is virtually maintenance-free. However, when the
maximum air gap is reached, an adjustment of the air gap is required for the
safe operation of the brake. The functional capability and safety function
of the brake will be compromised as additional wear occurs and must
be replaced.
1. While viewing in the direction of the brake (see Figure 11-3) loosen the
fastening screws (item 11) by turning the fastening screws half a rotation
counter-clockwise.
2. Turn the hollow screws (item 12) counter-clockwise into the magnet body.
3. Turn the fastening screws clockwise into the motor flange until the nominal
air gap is reached (measured with a feeler gauge) at
three different positions
around the brake
. [See the previous page for the appropriate measurement.]
4. Turn the hollow screws clockwise out of the magnet body until locked
against the counter-friction surface to reset the hollow screws.
5. Tighten the fastening screws with the tightening torque as per the
chart below.
1 Magnet
Body
2 Armature
Plate
11
Fastening
Screw
12 Hollow Screw
Air Gap Location Figure 11-3
Size
08
10
13
15
17
20
23
26
30
40
Torque
[Nm]
3
6
10
10
25
25
25
50
50
85
