GE Optica, Operator'S Manual

Page: 68 / 150

Programming the VGA Optica 4-9
January 2006
Automatic Cleaning and
Balance Function
Note: For Optica Analyzers with earlier versions of software, see
Appendix F .
Optica Analyzers with version XXX software have been upgraded to
include the ability to program the PACER self-cleaning and
rebalancing cycle to run once per day at a preset time. This is referred
to as a
Clock Time Interval . When the unit is programmed in this
manner, the front panel PACER softkey is disabled. The Elapsed Time
Interval initiates the PACER at a preset time after the last PACER was
run. The automatic balance cycle will always run upon power up of
the analyzers.
To program the Automatic Cleaning & Balance Function on the
Optica VGA monitor:
1. Make sure the internal clock of the Optica has the correct time.
a.
From the main screen enter
Menu ,
then
More
, then
Set Time
and Date
.
b. Highlight the Date and Time fields and use the Keypad and
Softkeys to set the correct time.
2.
Set the Time Programmed Balance Cycle .
a.
Enter
Menu
and go to the
Automatic Balance Section
.
b. Open the Type pull down menu and choose one of the four
selections (see Table 4-6 below).
Note:
The
PACER
function will provide more thorough cleaning than
the AUTO function because it first develops a thick dew/frost
layer into which soluble contaminants dissolve. When heated,
some of the contaminants are flash-evaporated and the
remaining residue accumulates in clusters, resulting in an
approximately 85% cleaner surface. The PACER cycle
generally takes longer to complete.
Table 4-6: Automatic Cleaning and Balance Functions
Item Function Type
AUTO Heats the mirror and balances the optics. Elapsed Time Interval
PACER
First cools the mirror to develop a thick dew/frost
layer, then heats and balances the optics.
Elapsed Time Interval
AUTO-D Heats the mirror and balances the optics. Clock Time Interval
PACER-D
First cools the mirror to develop a thick dew/frost
layer, then heats and balances the optics.
Clock Time Interval