Figure 3-1. First System
Analyzer Display
1 Date and Time. (See Chapter 5 to set).
2 Pressure units. While using any of the digital
manifold or vacuum gauge display screens,
press the UP/LEFT key to activate a pop-up
screen where options can be changed using
the UP/LEFT and DOWN/RIGHT keys.
Press the MENU key to save the selections
and exit the pop-up screen.
3 Refrigerant type. While using any of the
digital manifold or vacuum gauge display
screens, press the UP/LEFT key to activate
a pop-up screen where options can be
changed using the UP/LEFT and DOWN/
RIGHT keys. Press the MENU key to save
the selections and exit the pop-up screen.
4 Battery strength. (See Chapter 2 for battery
considerations).
5 The minimum and maximum pressures
encountered since the memory was last
cleared. (“Clear” key - typical for high and
low sides).
6 Set: The pressure represented by the center
horizontal line on both charts.
Crs: (Cursor) The charted pressure marked
by the vertical line on both charts.
7 Left Side: Vapor Saturate. The vapor satura-
tion temperature for the selected refrigerant.
(Also known as dew point)
Right Side: Liquid Saturate. The liquid satu-
ration temperature for the selected refriger-
ant. (Also known as bubble point)
8 Temp-1 (T1): The temperature indicated by
the T1 thermocouple. (For proper superheat
measurement, the T1 probe should be mea-
suring the suction line temperature.)
Temp-2 (T2): The temperature indicated by
the T2 thermocouple. (For proper subcool-
ing measurement, the T2 probe should be
measuring the liquid line temperature.)
While using any of the digital manifold or
vacuum gauge display screens, press the
UP/LEFT key to activate a pop-up screen
where options can be changed using the
UP/LEFT and DOWN/RIGHT keys. Press
the MENU key to save the selections and
exit the pop-up screen.
9
Superheat: The calculated superheat for
the selected refrigerant.
Subcool: The calculated subcooling for
the selected refrigerant.
NOTE: These calculations are based
on the measured pressures and
temperatures.
10 Charted pressure
11 Time indication (cursor)
12 Seconds per samples (sample interval).
Use the “Chart Time” key to toggle this
value through the available settings.
A small number will show rapid pressure
changes by displaying a short period of
time (‘zoom in’). A large number will show
only slower pressure changes by display-
ing a larger period of time (‘zoom out’).
13 Pressure scale range. Use the “Chart
Pres.” Key to toggle pressure resolution
to fit analog pressure data within the
display, enhancing a user’s ability to see
significant events. A small range will show
small pressure changes (‘zoom in’). A
larger range will show only larger pres-
sure changes (‘zoom out’).
14 Left Side: Suction pressure (‘Low Side’)
Right Side: Discharge pressure
(‘High Side’)
8
Figure 3-2. 2nd System Analyzer Display
