Functions
Description
System valves
The 0, dot, 1, 2, and 3 keys operate system valves.
Choices are:
n
V = Vacuum
n
H = Helium
n
N = Nitrogen
n
R = Reservoir
n
P = Port
n
0 = Po valve (not applicable for Gemini 2390
a
)
Po / VACUUM
. Opens and closes the Po or vacuum valve. For the
Po value (not applicable for the Gemini 2390a), press
Alt + 1
. For
the vacuum valve, press
1
.
HELIUM
. Opens and closes the helium valve.
NITROGEN
. Opens and closes the nitrogen valve.
RESERVOIRS
. Opens and closes the balance and sample reservoir
valve in unison.
PORTS
. Opens and closes the balance and sample port valves in
unison.
System values
When the character displays, the valve is open. When a dash (–)
displays, the valve is closed.
Manual Mode Keypad Functions (continued)
Manual Mode Operations
Gemini VII Keypad Operator Manual
239-42801-01 (Rev E) — July 2021
3 - 55
