OCEM 3 Series Use And Maintenance Manual page 22

LED PAPI 66
Repeat the verification/adjustment operations of the alignment (0°) of the LHA unit.
If necessary, proceed to fine adjustments of the alignment by acting on both supports: move
the lower nuts of the same amount in opposite directions until obtaining the alignment (0°).
Repeat the verification/adjustment operations of the tilt (i) of the LHA unit.
If necessary, proceed to fine adjustments of the tilt (i) and proceed to a further verification
of the alignment (0°).
If the LHA unit is equipped with the tilt switch optional device, follow the resetting the device. Loosen the screws
slightly (6a) and (6b) and use the clinometer to reset the tilt switch. When the value detected by the clinometer is
equal to 0° (± 0.02°) tighten the screws (6a) and (6b).
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UT-MT-0972_1.0_19-09-2022 (EN)
Use and Maintenance Manual