3.3 Side Views
Exhaust Port
Port for connection of Exhaust Adapter
Infrared Window
Window for sending stored data to IR Printer
(see 9)
Rubber Boot
Protects the instrument from accidental damage
Exhaust
Port
Infrared
Window
Rubber
Boot
Appendix F: CO ALARM & AUTO OFF SETTINGS
Setting the Carbon Monoxide Alarm Point and/or Auto Power Off Mode
The CO alarm and auto power off settings can be changed as necessary by per-
forming the following procedure.
WARNING :
Changing parameters in field calibration mode can adversely affect
the operation of your analyzer. Follow the instructions carefully.
1. Press and hold the Scroll/Enter Key down until ‘FILD CAL’ is displayed. The
709R will cycle through a 30 second countdown then display ‘CAL’, Air’, gAS’.
2. Use the Up Arrow Key to select ‘Air’ by making it blink. Press the Scroll/Enter
Key to accept the selection.
3. 709R Display: ‘CAL’, ‘FLo’, ‘oPEn’. Action : Press the Func Key to bypass.
4. 709R Display: ‘CAL’, ‘FLo’, ‘CLos’. Action : Press the Func Key to bypass.
5. 709R Display: ‘0ppm’, ‘Co’, ‘rEF’. Action : Press the Func Key to bypass.
6. 709R Display: ‘20.9%’, ‘o2’, ‘rEF’. Action : Press the Func Key to bypass.
7. 709R Display: ‘2000’, ‘A-r’, ‘SEt’. Action : If you are not changing the CO alarm
point press the Func Key. Otherwise press the Up and Down Keys to set the
ppm level the alarm will sound at. Factory default is 2000ppm. Press the
Scroll/Enter Key to accept the selection.
8. 709R Display: ‘Auto’, ‘oFF’, ‘En’. Action : If you are not changing the auto power
off mode press the Func Key. Otherwise press the Up and Down Arrow Keys to
enable (En) or disable (dis) the auto off function. Factory default is enabled
(En). Press the Scroll/Enter Key to accept the selection.
9. 709R Display: ‘CAL’, ‘StoP’, ‘go’. Action : Press the Up Arrow Key to select
‘StoP’ by making it blink and press the Scroll/Enter Key to accept the selection.
The 709R will return to normal operation
