CMS-4 IN-HELMET CARBON MONOXIDE MONITOR
Page 15
© 2019 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 29872
4.4.2
Entering Maintenance Mode
WARNING
The CMS-4 is not operational as a carbon
monoxide monitor while in Maintenance Mode.
The monitor must be in Measuring Mode before
it is placed in the respirator. Failure to ensure
the monitor is in Measuring Mode can result in
death if carbon monoxide is present.
4.4.2.1
Make sure the monitor is OFF. (Press and hold
POWER/MODE until the screen is blank.)
4.4.2.2
Press and hold AIR, then press and hold
POWER/MODE. Continue to hold the buttons down after
the first beep.
4.4.2.3
Release both buttons after the second beep.
The LCD screen should be as shown in Figure 19 with
the digit on the left flashing.
Figure 19
4.4.2.4
The factory-set password is 3000.
4.4.2.5
Enter the password by using AIR to select each
password number and then press and release
POWER/MODE to save it and move on to the next
number until all of the numbers are entered. To reverse
the direction of change (i.e. from increasing to
decreasing or vice versa):
a. Press and hold AIR.
b. Immediately press POWER/MODE and then
release both buttons.
4.4.3 Performing a Default (M.DEF)
NOTE: Performing a default operation in Maintenance
Mode returns all parameters to their factory settings.
4.4.3.1
Enter Maintenance Mode, per Section 4.4.2.
4.4.3.2
Press and release AIR 16 times and scroll to
M.DEF.
4.4.3.3
Press and release POWER/MODE. The screen
will alternate between M.DEF, YES.MODE, and NO.AIR.
4.4.3.4
Press and release POWER/MODE to perform a
default operation.
4.4.3.5
The monitor will ask if you are sure you want to
perform a default operation by alternating between
SURE?, YES.MODE, and NO.AIR.
4.4.3.6
Press and release POWER/MODE. The monitor
will beep twice, briefly display PASS, and return to M-
DEF.
4.4.3.7
To return to Measuring Mode (normal operating
mode), press and release AIR once and press and
release POWER/MODE. The monitor will begin the
warm-up sequence and enter measuring mode.
5.0
CALIBRATION, FRESH-AIR ADJUSTMENTS,
BUMP TEST, and STORAGE
This section covers:
Calibration Schedule
Performing Fresh-Air Adjustments
a) Setting the adjustment with ambient air.
b) Setting the adjustment with impurity-free test gas.
Prepare Calibration Connector for Calibration.
Connect Calibration Cup to Monitor
Remove Calibration Cup from Monitor
Performing a Bump Test
Calibrating the CMS-4
Storing the Calibration Connector and Test Gas
WARNING
Use a 0.5 LPM (liters per minute) fixed-flow,
calibration-connector regulator valve (Clemco
Stock No. 25572) when calibrating. Use of a
different flow rate will adversely affect the
accuracy of the calibration.
0 0 0 0
PASS - W
