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GE Masoneilan 469 Series Instruction Manual page 18

Position transmitter and limit switch
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8.
Calibration (Contd)
8.2.3 Air-gap adjustment
Air-gap between the proximity switch and the arm is
factory adjusted. If new adjustment is required proceed
as follows:
• Loosen the proximity sensor nut (37A), located on the
front of the bracket (36).
• Unscrew a few turns the locknut (37B) located on the
back of the bracket.
Parts List
Rep.
Designation
3
Screw
6
Housing
7 (1)
O-ring
8
Snap ring
9
Safety screw
10 (1) O-ring
11
Axis
(1) Recommended spare parts
18 | BHGE
8
3
7
25
Rep.
Designation
12
Cover
14
Serial plate
19
Spacer
24
Terminal block
25
Terminal block
30
Spacer
(2) Only for 496-4 model
• Position the arm above the proximity sensor and
push the shaft end (11) towards the outside of the
housing so as to eliminate the longitudinal play.
• Hold in position the proximity sensor and screw the
nut (37A). Adjust air gap to 0,3 mm using a shim
• Tighten the lock nut (37B).
6
9
10
11
34
Rep.
31
Snap ring
32
Washer
33
Arm
34
Proximity sensor
35 (2) Spacer (Not shown)
36
Sensor bracket
37
Nut
© 2018 Baker Hughes, a GE company. All rights reserved.
12
8
30
37A
37B
19
Designation
31
32
33
36
15
14
3
24

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