Welch Vacuum 2028 Self-Cleaning Dry Vacuum System - Manual (Page 14)

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- 2) PROGRAM
Selecting the Program option allows the end user to select from one of fi ve stored
programs, enter a new program or edit an existing one. Use the Vacuum Control knob to
scroll to the Program option and press to enter the Program menu screen.
The Program screen displays all existing stored programs in desired vacuum units
and time (minutes). Use the Vacuum Control knob to scroll up and down and press the
Vacuum Control knob to enter your selection.
If the memory location is empty the following screen will appear. Enter the values
requested, fi rst vacuum setting (P1), fi rst time setting in minutes (T1), second vacuum
setting (P2), second time setting in minutes (T2). If P1is entered and T1 is left blank the
program will only store a vacuum setting. If T1 and/or T2 is left blank, P2 will be set to
run until unit is manually turned off. If the values are entered correctly and have been
saved, the program will redisplay the entered values with the option to Edit, Run or Exit
the program you just entered.
After each program ends with a timed value, the unit will automatically go into VENT, or
Self-Cleaning mode if Auto Shutdown is Enabled in Setup. ( see Setup)
If the memory location is full. The following screen will appear and request if you want to
Edit, Run or Exit the program. Use the Vacuum Control knob to select your option.
All programs are quickly accessible in VENT mode by pressing the numeric keypad for each
program number.
Example:
Keypad # Program #
1 1
2 2
3 3
4 4
5 5
Note: All pressure values will be entered according to the predefi ned unit settings (torr, mbar,
kPa). Time will be entered in minutes.