The Turbo Air® 3000 Centrifugal Compressor Compressor Handbook

The Turbo Air 3000 Centrifugal Compressor Handbook
Input or Operational Keys
These keys allow the operator to communicate with the control system. Using these keys you can
maneuver among the control screens, change alpha-numeric values of set points, and change
the various control constraints or entered using these keys in the manner described below.
You can simultaneously manipulate the throttling and blow-off valves by using the two sets of
paired keys.
3—8
Enter
Increase and Decrease
Use this pair of keys to perform these operations:
Raise or lower the value of any numeric or alpha character highlighted on a
particular screen.
Toggle between two conditions (e.g.: ON/OFF; Alarm/Normal; Yes/No).
Manually step open or close the inlet valve or inlet guide vanes. (Full manual
control must be authorized to use this function. See: Set Points / Manual
Control / Enter.)
Enter
Press this key to navigate and perform the following operations:
Select and move into the highlighted field or screen. (e.g.: After navigating to
an item on a menu screen, press Enter to open or expose that subject's screen.)
Advance the cursor to the next entry data field or to the next digit within a
data field.
Confirm changed/displayed values (by moving away from the page).
Back
Press this key to navigate and perform the following operations:
Return to the previous display screen.
Move the cursor back within a particular selection screen or data entry field.
Confirm changed/displayed values (by moving away from the page).
Up
Use this pair of keys to:
Display additional information within a multi-paged screen. (Relocate "up" or
"down" to the next page.)
Navigate up or down within a list.
Manually step open or close a modulating blow-off valve. (Full manual control
must be authorized to use this function. See: Set Points / Manual
Control / Enter.)
Increase or Decrease the contrast of the LCD display when used in
combination with the View key.