Test Products International 709 - Manual (Page 33)

Appendix H: RESETTING PRESSURE SENSOR ZERO
Manually resetting the pressure sensor zero point
If the pressure sensor will not zero as described in section 6.2 use the proce-
dure below to reset the zero point of the sensor.
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 intil ‘FILD CAL’ is displayed. The 709
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. 709 Display: ‘CAL’, ‘FLo’, ‘oPEn’. Action : Press the Func Key to bypass.
4. 709 Display: ‘CAL’, ‘FLo’, ‘CLos’. Action : Press the Func Key to bypass.
5. 709 Display: ‘CAL’, ‘LEAK’, ‘rEF’. Action : Press the Func Key to bypass.
6. 709 Display: ‘0ppm’, ‘Co’, ‘rEF’. Action : Press the Func Key to bypass.
7. 709 Display: ‘20.9%’, ‘o2’, ‘rEF’. Action : Press the Func Key to bypass.
8. 709 Display: ‘0.0mbar’, ‘0.0’, ‘oFS’. Action : Press the Func Key to bypass.
9. 709 Display: ‘2000’, ‘A-r’, ‘SEt’. Action : Press the Func Key to bypass.
10. 709 Display: ‘Auto’, ‘oFF’, ‘En’. Action : Press the Func Key to bypass.
11. 709 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 709 will return to normal operation
If the 709 continues to fail to automatically initialize or this procedure fails
to initialize the sensors, return your analyzer to Test Products International.
Appendix G: MANUALLY INITIALIZING SENSORS
Manually Initializing the Carbon Monoxide and Oxygen Sensors
If the CO or O2 sensor fails to initialize, this procedure can be performed to
try and manually initialize the sensor(s).
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
709 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. 709 Display: ‘CAL’, ‘FLo’, ‘oPEn’. Action : Press the Func Key to bypass.
4. 709 Display: ‘CAL’, ‘FLo’, ‘CLos’. Action : Press the Func Key to bypass.
5. 709 Display: ‘0ppm’, ‘Co’, ‘rEF’. Action : Press the Scroll/Enter Key. After the
10 second countdown is complete press the Scroll/Enter Key twice.
6. 709 Display: ‘20.9%’, ‘o2’, ‘rEF’. Action : Press the Scroll/Enter Key. After the
10 second countdown is complete press the Scroll/Enter Key twice.
7. 709 Display: ‘2000’, ‘A-r’, ‘SEt’. Action : Press the Func Key to bypass.
8. 709 Display: ‘Auto’, ‘oFF’, ‘En’. Action : Press the Func Key to bypass.
9. 709 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 selec-
tion. The 709 will return to normal operation
If the 709 continues to fail to automatically initialize or this procedure fails
to initialize the sensors, return your analyzer to Test Products
International.