To Program the Oxford cryo controller:
- Power on the unit
- Wait for the self-test to complete
- Press START - by default the controller goes into Turbo mode and cools to 100K
- Once at 100K it automatically enters a HOLD state - the HOLD LED will be lit - it is not necessary to enter a program to start operating
- The new model 700 takes only 20 minutes to reach 100K from 295K.
As indicated above the new model 700 system defaults to a rapid startup, cooling down to 100K in it's "turbo" mode with the flow rate at maximum. It also executes a HOLD 100 once it gets down to target temperature. Starting the system and ramping it down to 100K just involves a single operation: just press the START button. Once at 100K the HOLD LED will be lit and it is safe to use the cryo for your experiment. No need to press any other buttons.
To commence ramp-up and shutdown it's rather similar to the old model 600:
- Press the PROGRAM button
- Use the dial to bring up an END step on the lower display, then press ENTER
- I prefer that you leave the ramp-up rate at 120K/hr but you can change the ramp-up rate using the dial
- Press ENTER again to finish the selection of the END statement
- Press START to being the program - the HOLD LED should go out
- Press the DISPLAY button to bring up the progress of the END step on the lower display
The system will show SHUTDOWN once it has finished the END step and you can then power off both the controller and the AD51.