TPI 777, Manual

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7
OPERATION and USE
Press and hold the ON button to start the instrument in an area known to
be gas free and with normal oxygen amount. The following will display
during start up:
1. Activate all segments and icons
2. CO (Gas type being sensed)
3. Low Alarm LevelSoftware version
4. High alarm Level
5. TWA Alarm Level
6. STEL Alarm Level
7. "HI" High alarm value displays
8. Calibration Year / Month
9. LED, Buzzer, Vibration test
10. Main display
To Turn the 777 off, press and hold the Power button down for approximately 10
seconds until the 777 turns off. The 777 will beep during this time.
If the 777 is turned on in an area that is not free of CO, an error will display and
the 777 will need to be turned off and turned back on in a clean air environment.
Attach the 777 to the outermost garment closest to your head/face as
practical. Always follow federal, state, local and company regulations as it
relates to the use of personal CO detectors.
Alarms indicate unsafe levels. The display will show the concentration
along with audible, visual and vibration indications.
Manual zeroing should only be performed in a clean air gas free environment
con-taining normal oxygen levels. Press the ZERO button for 2-3 seconds and
release. All seg-ments of the display will flash followed by the working display.
Exposure to gas in excess of sensors range specifications will result in "OL"
being dis-played with the high alarm activated