Honeywell ML7999C Notice Technique page 6

ML7999C UNIVERSAL PARALLEL-POSITIONING ACTUATOR
Actuator Initial Setup
IF the system is being commissioned, perform the
following to set the ML7999C and linkage/damper of the
air/fuel/fgr.
DAMPER/LINKAGE TO ACTUATOR.
ACTUATOR
MECHANICAL CLOSED
FIXED STOP.
Fig. 7. Mechanical end stop changes for auto seek open/closed function.
2. Auto seek closed to find the actuator mechanical
closed fixed stop. See Fig. 8.
Fig. 8. Auto seek closed to find actuator mechanical
closed fixed stop.
3. Move the actuator closed position five (5) degrees off
the mechanical closed fixed stop. See Fig. 9.
32-00079EF—01
MOVE ACTUATOR 5 DEGREES
OFF MECHANICAL FIXED STOP.
MECHANICALLY LOCK
Mechanical open/closed fixed stops of actuator (ML7999C).
Move actuator 5 degrees of mechanical closed fixed stop. Verify that air/fuel/fgr have been adjusted to their
mechanical fixed closed position. Mechanically lock air/fuel/fgr shaft to ML7999 actuator.
Open actuator 2 - 5 degrees. Lock actuator closed position.
Move actuator 5 degrees off mechanical open fixed stop. Lock actuator open position.
1. During the actuator setup, use the auto seek closed
or the CW/CCW buttons to find the mechanical fixed
stop of the actuator. The air/fuel/fgr is not connected
at this time.
MOVE ACTUATOR 5
DEGREES OFF MECHANICAL
OPEN FIXED STOP. LOCK
ACTUATOR OPEN POSITION.
OPEN ACTUATORS 2 - 5
DEGREES. LOCK
ACTUATOR CLOSED
POSITION.
Fig. 9. Move actuator closed position five degrees off
mechanical closed fixed stop.
4. Verify that the gas/fuel/fgr linkage/dampers are at
their closed positions.
5. Tighten the set screws on the actuator.
6
ACTUATOR
MECHANICAL OPEN
FIXED STOP.
M36779