Part 1: CMS-4 Setup Guide

Watch how to set up and begin operating Clemco's CMS-4 Carbon-Monoxide Monitor-Alarm. This is the first of two videos. The CMS-4 attaches inside the helmets of supplied-air respirators, which enables blast operators to self-monitor their CO exposure. It triggers audible, visual, and vibratory alarms if CO is detected in concentrations of at least 10 ppm. Clemco is the world's largest manufacturer of air-powered abrasive blasting equipment, including abrasive blast machines, blast cabinets, blast rooms, safety equipment and blasting accessories.

CMS-4 Carbon Monoxide Monitor-Alarm Setup Guide: Part 1

Clemco’s CMS-4 Carbon Monoxide Monitor-Alarm detects carbon monoxide in the breathing-air supply of supplied-air respirators. It attaches inside the helmet of a supplied-air respirator and triggers audible, visual, and vibratory alarms when carbon monoxide is detected in concentrations of 10 parts per million or higher.

This two-part video series shows how to operate the most commonly needed CMS-4 functions. This first video covers:

    • Turning the CMS-4 On and Off
    • Setting the Date and Time
    • Performing a Fresh-Air Adjustment

Please note that this video is not a replacement for reading the CMS-4 Operations Manual, which should be read in full by anyone who uses the monitor.

Turning ON the CMS-4 CO Monitor-Alarm

Turning On the CMS-4 Monitor-Alarm

  1. Press and hold the POWER/MODE button until the monitor beeps once. The warm-up sequence automatically runs:
  2. All sections of the monitor’s screen turn on, the backlight turns on, and the monitor beeps and vibrates.
  3. The monitor cycles through calibration status, date/time, battery voltage, target gas, and alarm setpoint screens.
  4. After the warm-up sequence is complete, the monitor beeps twice and the screen displays CO at the top left, the battery icon at the top right, and ppm reading at the lower right. The monitor is now in measuring mode.
    • NOTE: If the monitor indicates a low battery (only the last bar in the battery icon shows) or sounds the dead-battery alarm, replace the battery. Refer to the operations manual for instructions.

Turning Off the CMS-4 Monitor-Alarm

  1. Press and hold the POWER/MODE button. The monitor turns off after 4 beeps.
  2. Release the POWER/MODE button after the monitor’s screen goes blank.
Turning OFF the CMS-4 CO Monitor-Alarm
Setting the Date and Time: CMS-4 CO Monitor-Alarm

Setting the Date and Time

  1. Turn off the monitor by pressing and holding the POWER/MODE button. The monitor turns off after 4 beeps. Release the POWER/MODE button after the monitor’s screen goes blank.
  2. Press and hold the AIR and POWER/MODE buttons. Release the buttons after the monitor beeps 1 time. The monitor beeps again and BUMP displays in the bottom left of the screen.
  3. Press the AIR button 11 times, and DATE displays in the bottom left of the screen.
  4. Press and release the POWER/MODE button once. You will hear a beep for each button pressed.
  5. Press the AIR button as often as necessary to adjust the year. Press the POWER/MODE button to save the year. The month now flashes.
  6. Repeat these steps with the AIR and POWER/MODE buttons to adjust the month, day, hour, and minute settings.
  7. After adjusting or confirming all date and time settings, END displays in the bottom left of the screen for a few seconds, and then DATE
  8. Press the AIR button 3 times, and START displays in the bottom left of the screen.
  9. Press and release the POWER/MODE button to begin the warm-up sequence. After the warm-up sequence ends, the monitor beeps 2 times. The monitor now is in measuring mode.

Performing a Fresh-Air Adjustment

  1. Be sure the monitor is in a fresh-air environment, free of toxic gases and with normal oxygen content: 20.9%.
  2. Turn on the monitor by pressing and holding the POWER/MODE button until the monitor beeps once.
  3. The warm-up sequence automatically runs for about 15 seconds.
  4. After the warm-up sequence is complete, the monitor beeps twice and the screen displays CO at the top left, the battery icon at the top right, and a ppm reading at the lower right. The monitor is now in measuring mode.
  5. Press and hold the AIR button. Air displays at the top of the screen and HOLD displays at the bottom, and then this changes to AdJ displaying at the top and RELEASE at the bottom. Release the AIR button.
  6. The monitor beeps once, and the display reads as 0 ppm near the lower right of the screen.
Performing a Fresh-Air Adjustment: CMS-4 CO Monitor-Alarm

Correct operation of the CMS-4 is necessary to protect blast operators from carbon monoxide poisoning, which can cause severe injury and even death. The purpose of this video is to familiarize viewers with the most commonly needed functions. However, this video is not a replacement for reading the CMS-4 Operations Manual, which should be read in full by anyone who uses the monitor.