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Warning Message Meaning
SYSTEM RESET Issued whenever Monitor is powered on
RAM INITIALIZED RAM was erased
ANA LAMP WARNING UV lamp < 2500mV OR => 5000mV
ANA LAMP SHUTDOWN UV lamp temp control not working
SAMPLE FLOW WARNING Sample flow < 700 cc/m
SAMPLE PRESSURE WARN Sample pressure < 15 or > 35 In-Hg-A
SAMPLE TEMP WARNING Sample temp < 10 or > 50 deg. C
BOX TEMP WARNING Box temp. < 12 deg. C or > 55 deg. C
ANA LAMP TEMP WARN UV lamp temp < 51 or > 61 deg. C
V/F NOT INSTALLED V/F card not installed or bad
TABLE 2.3 WARNING MESSAGES
Menu Field
The menu field changes depending on the mode of the Monitor and the buttons that have
been pressed. It indicates the current function of each of the 8 pushbuttons below the
display.
The 8 pushbuttons below the display are programmable by the CPU in that their
functions change depending on the mode of the Monitor or the operations being
performed. The legend above a button identifies its current function. If there is no
legend above a button, it has no function and will be ignored if pressed.
2.2.2 Status LED’s
The three status LED’s to the right of the display indicate the general status of the Model
450 Monitor. The green SAMPLE LED indicates the sampling status. The yellow
FAULT LED indicates the fault status. The red ALARM LED indicates the
concentration alarm status. Table 2.4 below summarizes the meanings of the status
LED’s.
P/N 02395D1 Teledyne API Model 450 O
3
Monitor Instruction Manual - Page 34