CMS-1 CARBON MONOXIDE MONITOR
Page 10
© 2017 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 23301, Rev. F
4.6.2
If the number in the display is lower than 10
PPM, calibrate through the upright triangle. If the
number is higher than 10 PPM, calibrate through the
inverted triangle. Calibrate by inserting a straightened
paper clip through the small access opening in the
appropriate triangle, pushing gently until the detent is
felt. It takes several gentle pushes to change the display.
Repeatedly and slowly, press the switch until the display
registers 10 PPM.
4.6.3
When the display shows 10 PPM, the monitor is
calibrated. Return the instrument to operating mode per
Section 4.7.
4.7
Return Monitor to Operating Mode
4.7.1
Close the connector’s flow-control valve.
4.7.2
Remove the calibration connector from the
monitor by gripping the tube-end connector, push in
lightly and turn it counterclockwise to unlock, and pull
straight out.
4.7.3
Place the Run/Calibration toggle switch toward
"RUN". The flow meter ball should rise to .5 to .8 SCFH.
After the warm-up, the "ALARM" light should change
from
yellow
to
green
. If the light does not change to
green
, increase or decrease flow by adjusting the
pressure regulator as required.
4.7.4
Make sure the "ARM" light is lit. See Sec. 1.7.2.
4.7.5
Close the instrument case cover and tighten the
screws to a maximum of 20-inch-lbs.
4.7.6
Remove the calibration connector from the
cylinder of test gas. The test gas cylinder has a positive
seal, whereas the calibration connector valve does not.
If the connector is not removed from the test gas
cylinder, over time, the cylinder will empty.
4.7.7
If the tubing needs to be removed from the
calibration connector, press and hold the slide release,
and gently pull the tubing connector out from the release
fitting.
4.7.8
Store all material in a clean, dry area.
4.8
Impurity-Free Air (zero contamination) Test
4.8.1
This test should be done whenever the
instrument stays in an alarm condition after it is returned
to the operating mode. This test shows whether the
alarm condition is due to contaminated air, or a
malfunctioning monitor.
4.8.2
Follow the steps in Section 4.5 Calibration
Testing, but use impurity-free test gas in place of the 10
PPM gas.
4.8.3.
If the monitor is correctly calibrated and in
working order, the display will show 00 PPM. This means
the monitor was accurately reading contaminated air. DO
NOT USE THE COMPRESSED AIR FOR BREATHING.
Do not breathe air that this instrument identifies
as toxic, until the source of contamination is
identified and corrected. Breathing toxic gases
can cause death.
4.8.4
Identify the source of contamination. Do not
overlook the possibility that contaminated air entered the
compressor intake. The contamination could be from
engine or other exhaust entering the intake. If the source
of contamination is temporary, the monitor will return to
a non-alarm (safe) condition after the contamination is
cleared from the compressed air system.
4.8.5
If the monitor is out of adjustment or not in good
working order, the display will show other than 00 PPM.
Zero the instrument per Section 5.0.
4.8.5.1
Calibrate the monitor per Section 4.6 and
reapply impurity-free gas. If the display shows other than
00 PPM, the monitor requires service.
Do not use compressed air monitored by this
instrument for breathing unless the instrument
is in good working condition. Using a monitor
that is not in calibration or not working
correctly can permit undetected CO to enter the
breathing-air lines. Breathing toxic gases can
death.
5.0
ZEROING the MONITOR
The following materials are required before zeroing the
monitor:
Impurity-Free Gas ........................... Stock No. 11132
Calibration Connector ..................... Stock No. 23011
Medium size screwdriver
Miniature screwdriver
