PRECAUTIONS:

A) Be prepared to halt equipment in case of problems.

B) The control room audio system should be set to monitor noise in the dome generated by the dome and shutter.

General Description:

Test the dome and shutter for any operational problems before night operations commence.


1.0 Test the rotation of the dome.

1.1 Access the Dome Computer graphical user interface. Dome rotation is at the top of the GUI.

1.2 Notice the present azimuth of the dome. (The normal stow position of the dome is 180 degrees.)

1.3 Command the dome to rotate either clockwise or counterclockwise such that the dome turns nearly one rotation by: (1) selecting the desired direction of rotation (CW or CCW), (2) typing the desired target azimuth in the command window, and (3) clicking on the ‘GO’ button.

1.4 The dome brakes can be heard releasing over the audio system and then the dome will start to rotate.

1.5 Go into the enclosure as the dome is rotating; observe and listen to the condition of the rotating dome.

1.6 Once the rotation has stopped go back to the dome computer and rotate the dome again, only in the opposite direction.

1.7 Go outside near the MLRS wall and observe the condition of the dome as it rotates including the shutter support mechanics. Make sure that the dome louver covers are in place, all lightning rods are attached (including those on the CCAS tower), and listen for abnormal sounds.

1.8 Once the dome has stopped rotation at the desired azimuth go back inside to the dome computer and click on the ‘HOME’ button to home the dome. The dome will rotate to an azimuth of 69.0 degrees and stop. This is the homed position of the dome.

1.9 Verify that the dome is pointing at the CCAS tower.

1.10 After the homing process has been completed select ‘SHORTEST ROUTE’ for the dome rotation direction.

2.1 Perform this test only if weather conditions are acceptable. If in doubt wait for the TO to arrive before continuing this test.

2.2 Verify that there are good communications between the dome computer and shutter by observing the color of the ‘Shutter Communications’ block in the shutter control portion of the dome GUI. If the block is white, there are good communications and if it is red, there are not. At a dome position azimuth of 69.0 degrees the shutter communications block should be white.

2.3 Command the dome shutter to open by clicking on the ‘OPEN’ button.

2.4 The three shutter clamps will open sequentially and then the shutter will begin to open.

2.5 Verify that the shutter is opening and then click on the ‘STOP’ button on the GUI.

2.6 After the shutter has stopped opening click on the ‘CLOSE’ button to close the shutter.

Fault conditions and solutions

A) Dome will not rotate due to an inverter fault.

1) On the dome GUI open the RS232 window and select ‘DOME’.

2) Select ‘MANUAL’.

3) Type p21=1 (not case sensitive0 for power off into the send window and click ‘SEND’.

4) Type p20=1 for power on into the send window and click ‘SEND’.

5) Select ‘AUTO’.

6) Select ‘NONE’ in place of ‘DOME’ and close the RS232 window.

7) Rotate the dome.

B) Dome suddenly stops in mid-rotation.

1) Click ‘GO’ again on the dome interface to start the dome rotating. Repeat if the dome stops again before it has reached the desired azimuth.

C) Dome pointing/azimuth error after homing.

1) Click the ‘HOME’ button on the dome interface.

2) Dome will rotate counter-clockwise until it finds its home flag. The dome should be pointed at 69.0 degrees when movement is completed.

3) If the dome is not positioned at 69.0 degrees repeat the homing procedure.

D) Shutter will not open.

1) Verify good communication between the dome computer and the shutter.

2) If the dome shutter communication block is red move the dome a few degrees in either direction until the block is white.

3) Open the RS232 window and select ‘SHUTTER’.

4) Set the control radio button to ‘MANUAL’.

5) Type ‘i5’ (not case sensitive) into the send window and click ‘SEND’. A ‘2’ should appear in the receive window.

6) Type ‘p21=1’ for power off and click ‘SEND’ then type ‘p20=1 for power on and click ‘SEND’.

7) Put the control radio button back on ‘AUTO’, select ‘NONE’ and close the RS232 window.

8) Open the shutter.

9) If a 2 did not appear after typing ‘i5’ and ‘send’, then do the following.

a) Type ‘i5=0’, click ‘SEND’, then type ‘i5=1’, click ‘SEND’, then type ‘i5=2’ and click ‘SEND’.

b) Repeat step 5 above to verify that a ‘2’ appears.

c) Do steps 6 and 7 above.

d) Open the shutter.