To start the drive for a specific shutter, press the S1-S3 button and while holding it press the OPEN or
CLOSE button, depending on the direction of operation of the drive. The engine drive unit has limit
switches preventing the shutter from exceeding the rotation limit. The drive of the shutter will be
stopped when the extreme position of the metal actuators of the switches are reached.
IMPORTANT DRIVE TESTS
Do not proceed until all drive movements are tested.
Tests:
1.
Before proceeding with further work, make sure that all actuators and end switches are work-
ing correctly by moving drives to fully open and then fully closed positions.
2.
Verify that the drive handles do not lock in the end positions with the drive axles.
3.
Verify the angular position of the handles of all shutters, and ensure symmetrical movements
are occurring on both sides.
4.
Do not proceed to shutter installation if shutter mounting handles move in opposing direc-
tions.
Figure. 35
–
view of limit switches and observatory shutters control mechanism
