Team required :      2 Electronics Specialists
                              2 Mechanical Specialists
                               1 Weightlifter

Nominal  time :       6 hours


Instrument mounting

Tick each box when complete	Tick box
1. Make entry in log book :         DO NOT MOVE TELESCOPE
2. IMPORTANT  Position the telescope for change : Azimuth  300 degrees & Elevation  90 degrees
3. Lock telescope off control room..
4. Turn the Cassegrain rotator to correct angle and line up the marks on ISIS and the A&G box.
5. Put telescope ties in on the GRACE side.
6. Remove all connections to the instrument to be removed.
7. Move instrument handling trolley under instrument, align & attach.
8. Unbolt and remove instrument.
9. Check that ISIS lid is open.
10. Move ISIS into place and bolt on. ONE person only to check all bolts are tight.
11. Lift down and store trolley
12. Balance telescope. NB this should be done after cabling up and switching on ISIS and the CCD controllers. Pre-testing can then be carried out during balancing

Instrument Cabling

Tick each box when complete	Tick box
13. Connect the ISIS air supply
14. Connect the ISIS 4MS Network and Engineers' ports to the NIU port and the RS232 box (labelled ISIS) respectively.
15. Connect the ISIS EPICS crate to the DECNET.
16. Connect and switch on the ISIS mains.
17. Switch on : ISIS 4MS, ASL unit, ISISP EPICS crate and SMDM 24v power supply.

ISIS CCD mounting

Tick each box when complete	Tick box
18. Clean the CCD Cryostat windows.
19. Clean the camera lenses
20. Ensure the correct length filler tube is fitted in each cryostat. HALF LENGTH tubes are needed for cryostats mounted on RED and BLUE
21. Set the capstans A,B & C and the rotation for each cryostat using the micrometers as per the 'Capstan Settings Book'
22. Clamp the capstans in correct order i.e.  1st  A - the hole, 2nd  B - the slot, 3rd C - the flat. To PREVENT  FORMING AN EARTH LOOP ensure the micrometers including the D rotation micrometer are wound back and are not touching the frame. Also check that the clamps have insulating material fitted where they make contact with the capstan screws. CHECK isolation using a multimeter before connecting any cables to the cryostat.
23. Set cryostat window flushing to ~50 litres/hour.

ISIS CCD connections

Tick each box when complete	Tick box
24. Connect the mains to the RED SDSU PSU.
25. Connect an SDSU power cable between the RED SDSU controller and the RED SDSU controller PSU.
26. To be done be member of detector group taking anti-static precautions Connect the RED CCD main signal cable static protection box to the RED SDSU controller.
27. Connect the RED temperature cable between the RED SDSU controller and the RED cryostat.
28. Connect the RED shutter cable from ISIS RED shutter to the RED shutter control box and the other shutter cable from the the RED shutter control box to the RED SDSU controller.
29. Connect an ID cable between the RED cryostat and the RED SDSU controller
30. Connect the 2 fibres from the RED controller back to the appropriate SPARC in the control room.
31. Connect the mains to the BLUE SDSU PSU.
32. Connect an SDSU power cable between the BLUE SDSU controller and the BLUE SDSU controller PSU.
33. To be done be member of detector group taking anti-static precautions Connect the BLUE CCD main signal cable static protection box to the BLUE SDSU controller.
34. Connect the BLUE temperature cable between the BLUE SDSU controller and the BLUE cryostat.
35. Connect the BLUE shutter cable from ISIS BLUE shutter to the BLUE shutter control box and the other shutter cable from the the BLUE shutter control box to the BLUE SDSU controller
36. Connect an ID cable between the BLUE cryostat and the BLUE SDSU controller
37. Connect the 2 fibres from the RED controller back to the appropriate SPARC in the control room.
38. Switch on RED and BLUE SDSU controller PSUs and Shutter control PSUs.

ISIS post installation checks

Tick each box when complete	Tick box
39. In the control room on the old autoguider VME type ?net  Make sure you receive an 'acknowledgement' message for ISIS
40. At the instrument engineering terminal switch box (right knob) select CASS INST. and using the right hand VT220 terminal type .SLINKS This will test communication to each of the SMDMs and the encoder channels. Any faulty serial links will be listed. A faulty link to SMDM M ( thats a CAPITAL M ) can be ignored
41. Still at the engineering terminal type ILS and CONFIG These both give useful information about the health of the instrument
42. At the telescope use the buttons on the front of the RED and BLUE shutter control boxes to test the operation and status from the shutters.
43. Bring up a window on the ICS and type PING ISISP to check that the Epics ISIS Polarisation crate is on the network

Final checks though ICL and ICS

Tick each box when complete	Tick box
44. Edit the detector configuration file as detailed in the DE checklists
45. Bring up ICL and ICS as detailed in the DE checklists.
46. Update the magnet board.

Check each mechanism and tick each box when complete	Tick box
47. Red Grating  (this should only be done after a change and not mid-run you will be disturbing the instrument set-up )
INRG
CENWAVE RED 4500
CENWAVE RED 6500
48. Red Collimator (this should only be done after a change and not mid-run you will be disturbing the instrument set-up )
INRCOLL
RCOLL 28000
RCOLL 1000
49. Red Fold
INRFOLD
RFOLD 1
50. Red filter A
ISIS_INIT RED_FILTER_A
RFILTA 1
RFILTA 2
RFILTA 0
51. Red Filter B
ISIS_INIT RED_FILTER_B
RFILTB 1
RFILTB 2
RFILTB 0
52. Red Hartmann Shutter
RHART 1
RHART 2
RHART 3
RHART 0
53. Blue Grating (this should only be done after a change and not mid-run you will be disturbing the instrument set-up )
INBG
CENWAVE BLUE 6500
CENWAVE BLUE 4500
54. Blue Collimator (this should only be done after a change and not mid-run you will be disturbing the instrument set-up )
INBCOLL
BCOLL 28000
BCOLL 1000
55. Blue Fold
INBFOLD
BFOLD 2
BFOLD 1
BFOLD 0
56. Blue Filter A
ISIS_INIT BLUE_FILTER_A
BFILTA 1
BFILTA 2
BFILTA 0
57. Blue Filter B
ISIS_INIT BLUE_FILTER_B
BFILTB 1
BFILTB 2
BFILTB 0
58. Blue Hartmann Shutters
BHART 1
BHART 2
BHART 3
BHART 0
59. Slit Carriage Unit
INSLIT
MSLIT
LSLIT
60. Set Slit Width (this should only be done after a change and not mid-run you will be disturbing the instrument set-up )
SLIT 100
SLIT 5000
SLIT 1000
61. Dekker Slide
INDEK
DEKKER n  ( where n = 1 to 8 )
62. Field Lens, Calcite Block and Polaroid Tray
INFCP
FCP POLAROID
FCP FIELD_LENS
FCP CALCITE
FCP CLEAR
63. Slit Door ( NB the dekker must be at position 0 for access to the slit area )
SLIT_DOOR OPEN
SLIT_DOOR CLOSE
64. Quarter Wave Plate
INQW
QW_POLAR MOVE IN
QW_POLAR ROTATE  0.5
QW_POLAR STOP ROTATE
QW_POLAR ANGLE 100
QW_POLAR ANGLE  3000
QW_POLAR MOVE OUT
65. half Wave Plate
HW_POLAR MOVE IN
HW_POLAR ROTATE 0.5
HW_POLAR STOP ROTATE
HW_POLAR ANGLE 100
HW_POLAR ANGLE 3000
HW_POLAR MOVE OUT
66. Grating Doors and Grating Clamp Checks
REDGRAT 35000 (this moves the red grating square on to the door)
BLUEGRAT 35000  (this moves the blue grating square on to the door)
GRATING_DOOR OPEN (go out to ISIS and open the door)
Use switches inside each grating compartment to check that each set of clamps releases. Then ensure that the clamps are on before closing the door.
GRATING_DOOR CLOSE
Using the WHT Duty Engineering notes for reference, take an arc with each arm. If arc lines are obtained then it is time to hand over to the SA to perform the final focussing
INSTRUMENT CHANGE COMPLETE                            Signature :                                  Date :
HANDOVER TO  SUPPORT ASTRONOMER               Signature                                    Date :