Removing MagAO-X From The Telescope¶
This procedure describes how to remove the MagAO-X instrument on the Magellan Clay Telescope.
Estimate Time to Complete: 2 hours
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Telescope Removal Proecedure
[ ] Instrument on Magellan Clay Nasmyth Platform, operating.
[ ] Shutdown MagAO-X
[ ] Turn off table legs and remove air connection
[ ] Remove all cables
See detailed procedure for removing 2K DM cables
[ ] Electronics Rack
[ ] Ensure that roll-out shelves are restrained
[ ] Close and lock doors
[ ] Tape keys down
[ ] Instrument
[ ] Remove eyepiece
[ ] Remove bumpers and pusher hardware
[ ] Turn off blower, and remove hose
[ ] Tape over any exposed holes (from cables, etc)
[ ] Secure any loose cables
[ ] Shrink wrap the instrument
[ ] Install solar blanked over shrink wrap
[ ] Cart and Rigging
[ ] Verify all cart hardware is in-hand
[ ] Verify two wire harnesses are in hand
[ ] Partially assemble cart, leaving one long side off
[ ] Store cart out of the way so table can roll into unpacking area
Rig Onto Cart¶
[ ] Position the telescope so that the elevator has access to the NASE platform
[ ] Lower table legs onto the casters by turning the 16 leveling bolts, and remove the metal pads
[ ] Roll the instrument away from the telescope NOTE: At least 4 people required, 2 to push, 2 to hold the cleanroom sides open
[ ] Move the cart, currently with 3 sides, around the legs
CAUTION: be careful to not bump the legs with the cart
[ ] Attach the 4th side of the cart
[ ] Ensure that the 8 large bolts on the cart are snug but not tight
[ ] Attach the lifting wire-harnass to each side of the cart
[ ] Attach the load spreader with straight extensions to the crane, using a crane scale
The load spreader attached to the crane for lifting the cart
[ ] Place the load spreader in the center position (the cart is symmetric)
[ ] Lift the load spreader, and position it over the instrument
[ ] Being careful to not bump the instrument, lower the load spreader and attach the lifting harnass D rings. Use 2x shackles to extend the length to reach the cart on the floor.
Lifting harnasses attached with shackle extensions
[ ] Position a person at each corner of the cart
CAUTION: Do not allow the cart to bump the legs or the table uncontrolled
[ ] Slowly lift the cart (320 lbs) until it is touching the bottom of the table
The cart being lifted to the bottom of the table.
[ ] Install the 8 bolts attaching the cart to the table. Loosen bolts on the cart as needed.
[ ] Once the cart is bolted to the table bottom, while 320 lbs is still on the crane, tighten all cart bolts. Do not over-tighten, make 1/4 turn after the washers are no longer free. This is to avoid excessive stress on the table.
[ ] Install the triangle stabilizing ropes between the crane hook and the lifting fixture IAW the below figure. Tighten, but do not cause them to pick the load.
*The triangle stabilizing ropes should be tight, but not become the lifting point for the load.
CAUTION: be sure that the load spread does not hit the cart when being repositioned.
[ ] Reposition the load spreader center to the instrument + cart position marked on it.
[ ] Ensure that there is room to move the legs out from under the table, opening the garage door into the cleanroom if necessary.
[ ] Position a person at each corner of the cart to stabilize it during the lift.
[ ] Position two people to remove the legs from under the table
[ ] Lift the table off the legs. The weight of the table + cart is 1920 lbs
[ ] Move the legs out from under the table.
The cart and instrument ready to be set down on the wheels, with legs out of the way.
[ ] Set the cart down on its wheels.
[ ] Move MagAO-X onto the elevator, and remove from the dome
[ ] When cart is on concrete outside Clay, move very slowly to avoid excessive vibration
Transport MagAO-X To The Clean room¶
[ ] Ensure that the lift gate at the summit has been adjusted for slow smooth operation as is done for the asm
[ ] Push MagAO-X onto the lift-gate
[ ] Raise the lift-gate to the height of the flatbed truck
[ ] Move MagAO-X onto the truck, using the come-along
MagAO-X will be loaded at the telescope using the lift gate, adjusted for slow operation as it is for the ASM.
[ ] Secure the instrument by strapping the cart down at 4 points as illustrated in the below figure.
MagAO-X will be strapped to the Isuzu similarly to how the ASM is transported.
[ ] Slowly drive the truck to the cleanroom
[ ] Back the flatbed truck up to the lift gate.
[ ] Next, using the come-along, carefully move MagAO-X onto the lift gate.
[ ] If the legs were not moved, return to the with the flatbed and move the legs to the telescope.
Install MagAO-X On The Platform¶
[ ] remove the earthquake bar
[ ] Move the rack to the lift gate, and load it on the pickup.
[ ] place foam between the rack side and the truck to protect cable connectors
The electronics rack has many delicate connectors on the side.
[ ] strap the rack securely to the truck
The rack on a truck for transport.
[ ] drive the truck to the cleanroom
[ ] unload the rack using the lift gate
Remove AOC from Control Room¶
[ ] power down AOC
[ ] remove monitors and pack
[ ] move AOC to cleanroom.