GE PhastSystem User Manual page 28

3. Description of the system
28
Run control keys
The key block on the far left of the keyboard is used to start/stop,
pause/continue, and monitor separation and development runs. These
keys are described below.
Fig. 14. Run control keys.
"SEP start/stop": Press to start a separation run. Press
again to end the run.
"DEV start/stop": Press to start a development run. Press
again to end the run.
"SEP pause/continue". Press to stop a separation run
temporarily. Press again to continue the run from where
it left off.
"DEV pause/continue": Press to stop a development run
temporarily. Press again to continue the run from where
it left off.
When you pause a run, the corresponding LED will blink. At 20
second intervals, a short alarm will sound to remind you that a
method is paused. Once you press a pause key, the display will show
the step number and the number of volthours or minutes that elapsed
during that step, for example:
SEP 1.2 PAUSE 68 Vh
or
DEV 1.08 PAUSE t = 10.0 min
During power failures, running methods are automatically paused.
For power failures lasting less than 5-10 seconds, methods will
automatically continue when power is restored. For longer power
failures, methods will remain in pause until you press "SEP pause/
continue" or "DEV pause/continue". The display will show: