CMS-4 IN-HELMET CARBON MONOXIDE MONITOR
Page 8
© 2019 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 29872
3.0
Alarms
This section covers alarm indications. It also explains
how to respond to an alarm condition and how to reset
the CMS-4 after an alarm has occurred.
3.1
Alarm Indications
3.1.1 Audible Alarms
Gas Alarms: Alternating high-low tone ‒ chirps occur
about once per second.
Fault Alarms: Double-pulsing beep occurring about
once per second.
In addition to the audible alarms, the monitor vibrates,
and the LEDs flash when any sort of alarm condition or
failure is encountered.
3.2
Alarm Indications Table:
Refer to table in
Figure 9 on the following page for Alarm Type, Visual
Indications, and other alarm indications
3.3
Resetting CO Alarms
3.3.1
The CMS-4 remains in alarm until the alarm
conditions passes and POWER/MODE is pressed.
NOTE:
Even though the gas concentration may have
fallen below the alarm point, the alarm indications will
continue until the alarm is reset using the
POWER/MODE button, as noted in the paragraph
below. A PEAK alarm display cannot be cleared until the
monitor is turned OFF. If a TWA or STEL alarm has been
activated, it cannot be reset unless the monitor is turned
OFF.
3.3.2
To reset a CO gas alarm, after the CO reading
falls below the low-alarm point (10 ppm), press and
release the POWER/MODE button once.
3.4
Responding to Alarms
This section describes responses to gas, over range,
battery, sensor failure, clock failure, and system failure
alarms.
3.4.1 Responding to CO Alarms
3.4.1.1
Follow an established procedure for responding
to CO gas alarms. It should include but not be limited to
removing the respirator as soon as it is safe to do so.
3.4.1.2
Reset the alarm by pressing and releasing the
POWER/MODE button once after the CO reading falls
below the low alarm point.
3.4.2 Responding to an Over Range Alarm
An over range alarm could indicate CO gas is above the
detection limit of 1000 ppm. The CO concentration
reading is replaced by blinking brackets (ΠΠΠΠ).
WARNING
An over range condition may indicate an
extreme CO concentration. Remove the
respirator as quickly as possible when it is safe
to do so.
3.4.2.1
Follow an established procedure for responding
to CO gas alarms. It should include but not be limited to
removing the respirator as soon as it is safe to do so.
3.4.2.2
Reset the alarm using POWER/MODE once the
alarm condition has cleared.
3.4.2
.
3
Calibrate the CMS-4, as described in Section 5.7.
3.4.2.4
If the
Over Range
condition continues, the
sensor may need to be replaced.
3.4.2.5
If the
Over Range
condition continues after
replacing the sensor, contact the authorized Clemco
distributor the monitor was purchased through for further
instructions.
3.4.3 Responding to Battery Alarms
WARNING
The CMS-4 is not operational during a dead
battery alarm. Do not use the respirator until
the battery is replaced. Breathing compressed
air while a monitor is not operational can result
in death if carbon monoxide is present.
3.4.3.1
The CMS-4 is fully functional during a low
battery warning. However, only a limited amount of
operating time remains. The amount of time depends on
how often the LCD backlight is used and how often the
monitor responds to alarm conditions. Replace the
battery as soon as possible when a low battery warning
occurs.
Refer to Section 6.1: Replacing the Lithium
Battery
.
NOTE: Alarms and the LCD backlight consume
battery power and reduce the amount of operating
time remaining.
