7
MODEL 5700
5. Remove the zero air sample and introduce a known sample of 50 to 150 ppm CO
to the sample inlet tube. The sample flow should be between 0.5 and 1.5 SCFH.
6. Verify that the display readings rise upscale and the alarm light and buzzer
operate (See Calibration and Adjustment, IV. B).
7. Remove the CO sample.
8. Insert the sample tube into the metering valve outlet fitting and lock in place.
9. Instrument is now ready for normal use. Turn OFF when not in use.
MONITOR CALIBRATION FREQUENCY:
MONTHLY CALIBRATION*: If monitor is used on continuous basis, (daily or weekly use).
PRIOR TO USE CALIBRATION*: If monitor is used on a non-continuous basis.
*If monitor’s alarm is energized, always check calibration to be sure monitor is not malfunctioning
and or out of calibration producing a false alarm/reading.
B. NORMAL OPERATION
1. Instrument will analyze the sample and show CO content on the display, in parts
per million (PPM). The green NORMAL light will glow continuously and the
red ALARM light will flicker about every second.
2. When the CO concentration exceeds the alarm point (initially set at 10 PPM, 5
PPM for Canada) the red ALARM light will come on steady, the green NORMAL
light will go off, the buzzer will sound a steady tone, and the REM ALARM jack
will be energized.
3. When the CO concentration drops below the alarm setting, the indicators will
automatically return to normal as in paragraph 1 above.
C. ABNORMAL INDICATIONS
1. Low Battery
As the battery voltage declines toward the end of its life, the following indications
occur, which assure that the problem will not be overlooked:
a) At 7.0 volts, the amber LOW BATTERY light will come on. Battery
replacement is recommended at this point, but continued operation is still
possible.
b) At 6.4 volts the buzzer will beep at intervals of about 7 seconds.
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