EMS EMS520 Manual page 8

Transceiver/retro, maintenance, off stack calibration
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BEAM ALIGNMENT PROCEDURE
Note: Alignment cannot be done unless the power is applied to the stack mounted service module. The control unit does not have to
be connected or powered. For alignment accuracy, the stack should be at normal temperature.
9) If not already on, turn on the power to all air purge systems and service module.
10) Align the Reflector mating flange so it is plumb and parallel to the 3" 150# mounting flange. Use the 3 adjusting
nuts on the air purge plenum flange until this is accomplished. The adjusting nuts have nylon locking inserts to
prevent loosening by vibration.
11) Move to the Transceiver, and determine monitor alignment by looking through the viewing port located on the rear
of the transceiver and observing whether the beam image is in the center of the cross hair (bulls-eye).
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