EMS 1304 Installation And Operation Manual page 21

Beam alignment procedure
Note: Alignment can not 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.
Figure 1, Service module
switch locations
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).
Maintenance module switches should be in the normal operating positions:
 Zero/Operate - Operate
 Span/Operate - Operate

Normal/Test - Normal
Opacity/T 2 - Opacity

If not already on, turn on the power to all air purge systems and
1.
service module.
Align the Reflector mating flange so it is plumb and parallel to the 3"
2.
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 loosing by vibration.
Move to the Transceiver, and determine monitor alignment by looking
3.
Adjusting bolts
20
Figure 2, Alignment of the transceiver