Telescope Piping Layout Integration with CTIO Herman Cease 3-30-11

1. Telescope Piping Layout Integration with CTIO Herman Cease 3-30-11

2. Console Room Roof Layout Vessel = 276Lbs. Empty, 1000Lb. Full. C.G. = 32” off floor- Empty Vessel Top Flange = 100Lbs. V-Box = 375Lbs. Empty 108” 65.9” 75” 50” 45” 65.9”

3. LN2 Control rack requirements The controls rack can be location is not critical, but it would be nice if the operator could Read the manual gages at the same time as operating the computer and controls rack. Control rack located under console floor roof Location of LN2 Process control rack Requires 3 phase 208 – pump controller with cutoff switch 110AC – computer/monitor/rack power Cable runs from the rack to the valve box and LN2 reservoir 208 VAC for pump Two 110AC for LN2 reservoir heaters Instrument cable XX twisted pair Reference wiring schematic #436698 ftp://www-ppd.fnal.gov/ppd-md-dwg/DWGS/ DECAM_436/pdf/436698-B1.pdf

4. CONSOLE LN2 Reservoir LN2 Main Valvebox 4 U-Tubes Valvebox to stairwell 2 left to Coude room 2 right to telescope Location of vent valve Used during initial Cool down Purple is location of Dome ladder

5. Around hidden stairwell – 45 foot hose Supply and Return Around stairwell Cable tray Support locations? See Coude room Installation for Cross sections of cable trays

6. Elevation from floor to bottom of cable tray, Not critical – 107 inches, Should leave 15 inches from bottom of tray to ceiling To allow clearance for LN2 pipes, and fittings

7. Around the hidden stair hose will come out near the orange structure

8. Around the hidden stairs hose, connects to the polar axis hose, near the outer Radius of the polar axis journal – on the east side Need access to make the joint, and connect vacuum pumps as needed

9. Entering Polar Axis Wrap near East plywood stairs Will mount To orange Telescope base Frame Enters polar axis Wrap at East Stairs Telescope shown pointing west Red wrap will lower as the Telescope rotates to the east Blue frame supports wrap During polar axis rotations

10. Piping runs west under the front of the cass platform. Purple line near cass stairs – shows the sweep profile Of the cass stairs Gray bracket shows end Of polar axis cable tray On east side of the cass. stairs Blue box is a conduit break out box For running the optic fibers

11. Polar Axis Wrap, slack taken up on EAST mezzanine wall This region just misses White Truss tubes When pointing due north Yellow box is route With the CASS stairs Unobstructed Polar axis shown Rotated to NW station Polar axis rotates Further to the west As indicated By the red wrap Purple ring is A stay clear for The cage stairs STAIRS CASS STEPS Wrap Slack When Rotated To the east

12. Polar Axis Wrap, Connection to Dec Axis – On Oval Blue Tube This corner is tight Between Blue Oval And Blue round truss tubes Needs to miss Cass Stairs when rotated Piping goes on outside Of Blue truss tube Then Steps out to The top of the truss Tube. Top of truss tube near Dec Axis is the next joint Brackets will be stud welded To Blue Oval Truss Tube

13. Vacuum Pumpout Port For polar axis hose This corner is tight Has electric box breakout for running Fiber optics LN2 cooling joint

14. DEC Axis Wrap Next Joint is just below Top flip ring LN2 joint and Vacuum pump out ports Two supports across White truss tubes One for the pipes One for the flex carrier Located near Mirror Door clamp Red, yellow green lines Show Dec. axis wrap in Different positions Support for wrap needs to clear mirror Door bracket

15. Flip Ring Two carts with a frame top support the Flip cable tray during a flip LN2 joint and vacuum pump out ports

16. 32 inches from flip ring carrier to console floor At edge of concrete Flip carrier overhangs concrete edge and Railing a little