Bio-Rad PowerPac™ Basic Power Supply - Manual (Page 11)

STEP PROCEDURE DESCRIPTION
6. Programming a timed run Use the parameter key to select time. The
display will show a zero value. Use the scroll
key to enter the desired time up to 999 min..
If no time is entered the run will continue
until the run is terminated by pressing the
stop key. When 999 minutes is reached, the
clock resets to zero and the run continues.
Note:
•
In a timed run the displayed time is the
remaining time. Pressing the pause key
will keep the remaining time. Pressing
the stop key will reset the time to zero.
• In an untimed run the displayed time is the
elapsed time. Pressing the pause key will
retain the elapsed time.
7. Optional; available only when Activating the Power failure detection mode
a timed run is programmed. is possible for timed runs only.
Power Failure detection.
• Make sure the parameter key is in time
mode (time LED is lit)
• Enter the desired time if not previously
entered
• Hold down the stop key for ~2 seconds
Caution: Always use the stop key until the display shows Pfd. This indicates
to terminate a run in progress. Use the Power Failure Detection is activated.
of the power switch to terminate a
run in progress is treated as a
power failure and the appropriate Note: After completion or termination of a
error code is displayed when the
run, the Power Failure Detect mode is
unit is turned back on automatically de-activated. See Section 4.2,
Troubleshooting, for details on Power Failure
Detect error messages.
8. Optional Certain applications exhibit fluctuations in
De-activation of change in resistance that can trigger the change in
resistance feature. resistance error codes. If this is the case,
the change in resistance feature can be
de-activated to allow un-interrupted
completion of a run.
• Make sure the parameter key is in
current mode (current LED is lit)
• Hold down the stop key for ~2 sec until
the display shows dE9
Note: After completion or termination of a
run the Change in Resistance Detection is
automatically activated.
Caution: De-activating this safety feature
increases the chance of electrical hazard.
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