Baker Hughes Masoneilan 496 Series Instruction Manual page 18

Calibration (Cont'd)
8.
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 | Baker Hughes
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 37B
Rep.
31 Snap ring
32 Washer
33 Arm
34 Proximity sensor
35 (2) Spacer (Not shown)
36 Sensor bracket
37 Nut
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12 8 30 37A
31
32
33
36
15
14
3
24
19
Designation