Clemco CMS-4 User manual
CMS-4
IN-HELMET CARBON MONOXIDE MONITOR
O. M. 29872
© 2019 CLEMCO INDUSTRIES CORP.
One Cable Car Dr.
Washington, MO 63090
Phone (636) 239-4300
Fax (800) 726-7559
Email: [email protected]
www.clemcoindustries.com
DATE OF ISSUE: 07/2019
REVISION:
Do not use this equipment
before READING this
MANUAL and
UNDERSTANDING its
contents.
These WARNINGS are
included for the health
and safety of the operator
and those in the
immediate vicinity. Failure
to read and understand
these warnings can result
in injury or death.
Electronic files include a
preface containing the
same important
information as in the
orange cover.
WARNING
PREFACE
[I]
• Employers are responsible for identifying all job site hazards, educating and training all persons who will operate and
maintain these products, and ensuring that all blast operators and their assistants understand the warnings and
information contained in these instructions relating to safe and proper operation and maintenance of this equipment.
• Serious injury or death can result from failure to comply with all Occupational Safety and Health Administration
(OSHA)regulations and all manufacturer’s instructions.
• This equipment is not intended for use in any area considered hazardous per National Electric Code NFPA 70 2011,
Article 500.
• Read this document and follow all instructions before using this equipment.
OSHA regulations relating to abrasive blasting are contained in the Code of Federal Regulations, Title 29 (29 CFR 1910 General Industry;
1915 Maritime; 1926 Construction). The most pertinent include: 1910.94 Ventilation, 1910.95 Occupational Noise Exposure, 1910.132
Personal Protective Equipment, 1910.133 Eye and Face Protection, 1910.134 Respiratory Protection, 1910.135 Head Protection,
1910.244 (b) Remote Controls. Consult www.osha.gov for complete information.
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Clemco proudly provides products for the abrasive blast
industry and is confident that industry professionals will use
their knowledge and expertise for the safe and efficient use of
these products.
The products described in this material, and the information
relating to these products, are intended for knowledgeable,
experienced users.
No representation is intended or made as to: the suitability of
the products described here for any purpose or application, or
to the efficiency, production rate, or useful life of these
products. All estimates regarding production rates or finishes
are the responsibility of the user and must be derived solely
from the user’s experience and expertise, not from information
contained in this material.
It is possible that the products described in this material may
be combined with other products by the user for purposes
determined solely by the user. No representations are
intended or made as to the suitability of or engineering
balance of or compliance with regulations or standard practice
of any such combination of products or components the user
may employ.
Abrasive blast equipment is only one component of an
abrasive blasting job. Other products, such as air
compressors, air filters and receivers, abrasives, scaffolding,
hydraulic work platforms or booms, equipment for lighting,
painting, ventilating, dehumidifying, parts handling, or
specialized respirators or other equipment, even if offered by
Clemco, may have been manufactured or supplied by others.
The information Clemco provides is intended to support the
products Clemco manufactures. Users must contact each
manufacturer and supplier of products used in the blast job for
warnings, information, training, and instruction relating to the
proper and safe use of their equipment.
GENERAL INSTRUCTIONS
This material describes some, but not all, of the major
requirements for safe and productive use of blast machines,
remote controls, respirator systems, and related accessories.
All equipment and accessories must be installed, tested,
operated and maintained only by trained, knowledgeable,
experienced users.
The blast operator and all workers in the vicinity must be
properly protected from all job site hazards including those
hazards generated by blasting.
Work environments involving abrasive blasting present
numerous hazards. Hazards relate to the blast process from
many sources that include, but are not limited to, dust
generated by blasting or from material present on the surface
being blasted. The hazards from toxic materials may include,
but are not limited to, silica, cyanide, arsenic, or other toxins
in the abrasives or in the coatings, such as lead or heavy
metals. Other hazards from toxins include, but are not limited
to, fumes from coating application, carbon monoxide from
engine exhaust, contaminated water, chemicals or asbestos.
In addition, physical hazards that may be present include, but
are not limited to, uneven work surfaces, poor visibility,
excessive noise, and electricity. Employers must identify all
job site hazards and protect workers in accordance with
OSHA regulations.
Never modify Clemco equipment or components or
substitute parts from other manufacturers for any Clemco
components or parts. Any unauthorized modification or
substitution of supplied-air respirator parts violates OSHA
regulations and voids the NIOSH approval.
IMPORTANT
Contact Clemco for free booklets:
Blast Off 2 – Guide to Safe, Productive, and Efficient Abrasive
Blasting, and Abrasive Blasting Safety Practices – Guide to Safe
Abrasive Blasting.
Clemco Industries Corp. One Cable Car Drive Washington MO 63090
Tel: 636 239-4300 — Fax: 800 726-7559
Website: www.clemcoindustries.com
PREFACE
[II]
OPERATIONAL INSTRUCTIONS
OPERATOR SAFETY EQUIPMENT
OSHA regulation 1910.134 requires appropriate respiratory protection for blast operators and workers in
the vicinity of blasting. These workers must wear properly-fitted, properly-maintained, NIOSH-approved,
respiratory protection that is suitable for the job site hazards. Blast respirators are to be worn only in
atmospheres not immediately dangerous to life or health from which wearers can escape without use of
the respirator.
The employer must develop and implement a written respiratory protection program with required
worksite- specific procedures and elements for required respirator use. The employer must provide
effective training to employees who are required to use respirators. The training must be comprehensive,
understandable, and recur annually, and more often if necessary.
NEVER use abrasives containing more than one percent crystalline silica. Fatal diseases, such as silicosis,
asbestosis, lead or other poisoning, can result from inhalation of toxic dusts, which include, but are not
limited to, crystalline silica, asbestos, and lead paint. Refer to NIOSH Alert 92-102; and OSHA CPL 03-00-007:
“National Emphasis Program – Crystalline Silica”, in which OSHA describes policies and procedures for
implementing a national emphasis program to identify and reduce or eliminate health hazards from exposure
to crystalline silica. Numerous topics associated with the hazards of crystalline silica in silica blasting sand
can be found on http:// osha.gov/. Clemco urges users of silica blasting sand to visit this website, and read
and heed the information it contains.
Always make sure the breathing air supply (respirator hose) is not connected to plant lines that supply
gases that include, but are not limited to, oxygen, nitrogen, acetylene, or other non-breathable gas. Never
modify or change respirator air line connections without first testing the content of the line for safe
breathing air. Failure to test the line may result in death to the respirator user.
• Breathing air quality must be at least GradeD,
as defined by the Compressed Gas Association
specification G-7.1, per OSHA Regulation 29 CFR
1910.134. When compressed air is the breathingair
source, a Clemco CPF (suitable sorbent bed filter)
should be used. Respirator hose connecting the
respirator to the filter must be NIOSH approved.
Non- approvedhose can cause illness from
chemicals employed to manufacture the hose.
• All workers must always wear NIOSH-approved
respirators when any dust is present. Exposure to
dust can occur when handling or loading abrasive,
blasting, cleaning up abrasive, or working in the
vicinity of blasting. Before removing the respirator,
test the air with a monitoring device to ensure it is
safe to breathe.
• Clemco respirators DO NOT removeor protect against
carbon monoxide or any other toxic gas. Monitoring
devices must be used in conjunction with the respirator to
ensure safe breathingair. Always locate compressors and
ambient air pumps where contaminatedair will not enter
the air intake.
• Always use Clemco lenses with Clemco respirators;
installing non-approvedlenses voids the NIOSH approval.
Respirator lenses aredesigned to protect the wearerfrom
rebounding abrasive; they do not protect against flying
objects, heavyhigh-speed materials, glare,liquids, or
radiation.
INDUSTRY ORGANIZATIONS
For additional information, consult:
Occupational Safety and Health Administration (OSHA) - www.osha.gov
Compressed Gas Association (CGA) - www.cganet.com
TheSociety for Protective Coatings (SSPC) - www.sspc.org
National Association of Corrosion Engineers (NACE) - www.nace.org
American Society for Testing and Materials (ASTM) - www.astm.org
National Institute of Occupational Safety and Health (NIOSH) - www.niosh.gov
American National Standards Institute (ANSI) - www.ansi.org
PREFACE
[III]
BLAST MACHINES AND REMOTE CONTROLS
OSHA regulation 1910.169 describes the necessity of pressure relief valves on compressed air equipment. Do not
operate blast machines with air compressors that are not equipped with properly functioning pressure relief valves.
OSHA regulation 1910.244(b) requires the use of remote controls on blast machines.
Serious injury or death can result from many sources, among them:
Involuntary activation of the remote controls. Never modify or substitute remote control parts; parts are not
compatible among different manufacturers. Welding hose is not suitable for remote control hose. Its ID and material
composition make it unsafe for remote control use.
Exceeding the maximum working pressure. Clemco blast machines are built to ASME-code and carry a ‘U’ or ‘UM’
stamp, and National Board/serial number. Every machine is marked with its maximum working pressure. Never
exceed the maximum working pressure limits of the blast machine.
Uncontrolled blast stream. High-velocity abrasive particles will inflict serious injury. Always point the blast nozzle
in the direction of the blast surface only. Keep unprotected workers out of the blast area.
Welding on the blast machine. Never weld on the blast machine; welding voids the National Board approval and
may affect the dimensional integrity of the vessel.
Moving the blast machine. Never manually move a blast machine containing abrasive, any machine containing
abrasive must be moved with appropriate mechanical lifting equipment.
HOSES, COUPLINGS, AND NOZZLE HOLDERS
The inside diameter (ID) of air hoses, fittings, and connections
should be at least four times larger than the nozzle orifice size. Blast
hose ID should be three to four times the size of the nozzle orifice.
Example: a #6 nozzle (3/8” diameter orifice) calls for 1-1/2” ID blast
hose and 1-1/2” ID or larger compressor hose. All hose runs should be
kept as short as possible and run in as straight a line as possible to
reduce pressure loss.
To install, squarely cut the end of the hose so that it fits snugly
against the coupling or hose end shoulder. Always use the screws
recommended by the manufacturer ensuring that they do not
penetrate the inner wall. Make sure the couplings tightly fit the hose.
Install cotter pins at every connection or use couplings with built-in
lock-springs to prevent disengagement. Install safety cables at all
connections to prevent whipping if hoses disengage or blow out.
MAINTENANCE AND REPAIR
Completelyreadand follow all service instructions and recommended maintenance intervals. Always shut off compressor and
depressurize blast machine beforeperforming any maintenance. At everyservice interval, cleanall filters, screens, and alarm systems. If
spring-loaded abrasive valves areused, always cage spring beforedisassembly.
WARRANTY
The following is in lieu of all warranties, express, implied or statutory, and in no event shall seller or its agents, successors, nominees or
assignees, or either, be liable for special or consequential damage arising out of a breach of warranty. This warranty does not apply to any damage or
defect resulting from negligent or improper assembly or use of any item by the buyer or its agent or from alteration or attempted repair by any person
other than an authorized agent of seller. All used, repaired, modified, or altered items are purchased “as is” and with all faults. In no event shall seller
be liable for consequential or incidental damages. The sole and exclusive remedy of buyer for breach of warranty by seller shall be repair or
replacement of defective parts or, at seller’s option, refund of purchase price, as set forth below
:
1. Seller makes no warranty with respect to products used other than
in accordance hereunder.
2. On products seller manufactures, seller warrants that all products areto
be freefrom defects in workmanship and materials for a
period of one yearfrom dateof shipment to buyer, but no warranty is
madethat the products arefit for a particular purpose.
3. On products which seller buys and resells pursuant to this order, seller
warrants that the products shall carry the then standard warranties of the
manufacturers thereof,a copy of which shall be madeavailableto the
customer upon request.
4. Theuse of any sample or model in connection with this order is for
illustrative purposes only and is not to be construed as a warranty that the
product will conform to the sample or model.
5. Seller makes no warranty that the products aredelivered freeof the
rightful claim of any third party by way of patentinfringement or the like.
6. This warranty is conditioned upon seller’s receipt within ten (10)
days afterbuyer’s discovery of a defect,of a written notice stating in
what specific material respects the product failed to meetthis
warranty. If such notice is timely given, seller will, at its option, either
modify the product or part to correct the defect,replacethe product or
part with complying products or parts, or refund the amount paid for
the defectiveproduct, any one of which will constitute the sole liability
of the seller and a full settlement of all claims. No allowance will be
madefor alterations or repairs made by other than those authorized
by seller without prior written consent of seller. Buyershall afford
seller prompt and reasonable opportunity to inspect the products for
which any claim is madeas abovestated.
Except as expressly set forth above,all warranties, express, implied
or statutory, including implied warranty of merchantability, are
herebydisclaimed.
PREFACE
[IV]
DAILYSET‐UPCHECKLIST
Make sure all blast operators are properly trained and suitably attired with a blast suit, safety boots, leather gloves, respiratory and hearing protection. Every day before start up,
check all equipment components, including piping, fittings, and hoses, and valves, for leaks, tightness, and wear. Repair or replace as needed. Use the following checklist.
1. PROPERLY-MAINTAINED AIR COMPRESSOR
sized to provide
sufficient volume (cfm) at given pressure for nozzle and other tools. ADD 50%
volume (cfm) reserve to allow for nozzle wear. Use large compressor outlet and
air hose (at least 4 times the nozzle orifice diameter). For oil-lubricated
compressors, the employer shall use a high- temperature or carbon monoxide
alarm, or both, to monitor carbon monoxide levels. If only high-temperature
alarms are used, the air supply shall be monitored at intervals sufficient to
prevent carbon monoxide in the breathing air from exceeding 10 ppm. Follow
the manufacturer’s checklist and maintenance instructions.
2. BREATHING-AIR COMPRESSOR
(or oil-less ambient air pump)
capable of providing Grade D quality air, located in a dust free area. Read # 1
above.
3. CLEAN, PROPERLY-MAINTAINED NIOSH-APPROVED SUPPLIED-AIR
RESPIRATOR
worn by blast operators, and other workers exposed to blast dust.
Make sure all respirator components are in place — all lenses, inner collar, and
cape. Thoroughly inspect all components for wear. The NIOSH approval (approval
number is listed in the owner’s manual) is for a complete assembly from point of
attachment on the CPF (sorbent bed) filter to the complete respirator. Substitution of
any part voids the NIOSH approval.
4. CARBON MONOXIDE MONITOR/ALARM
installed at the CPF filter or
inside the supplied-air respirator for monitoring for the presence of deadly CO gas
and warning the operator(s) when the CO level reaches an unacceptable level.
When an ambient air pump is used for breathing air, a CO monitor provides a
measure of safety. Read # 1 above.
5. BREATHING-AIR FILTER (OSHA-REQUIRED
sorbent bed filter) for
removal of moisture and particulate matter in the compressed air breathing-air
supply. Monitor the condition of the cartridge and replace when odor is detected or
at 3 month intervals, whichever comes sooner. The breathing air filter does NOT
detect or remove carbon monoxide (CO). Always install a CO monitor/alarm.
6. BLAST MACHINE
(bearing U or UM stamp, National Board Number, and
Maximum Working Pressure) sized to hold a 30-minute abrasive supply. Examine
pop-up valve for alignment. Check piping, fittings, screens, valves for tightness,
leaks, and wear. Always ground the machine to eliminate hazard of static shock.
Install a blast machine screen to keep out foreign objects. Use a blast machine
cover if left outdoors overnight. Never exceed the maximum working pressure of the
vessel.
7. AIR LINE FILTER
(moisture separator) installed as close as possible to the
blast machine inlet and sized to match the size of the inlet piping or larger air supply
line. Clean filter and drain often. Damp abrasive causes operational problems.
8. REMOTE CONTROLS
are required by OSHA and must be in perfect
operating condition. Test and check all components to ensure all parts are present
and fully functional. Use genuine replacement parts. NEVER mix parts from different
manufacturers. Never use welding hose for remote control hose.
9. BLAST HOSE
should have an inside diameter sized to suit the blast nozzle.
The ID should be three to four times the size of the nozzle orifice diameter. Blast hose
should be arranged in as straight a line as possible from the blast machine to the
work area, avoiding sharp bends.
10. COUPLINGS AND NOZZLE HOLDERS
should fit snugly on the hose and
be installed with manufacturer recommended screws. Coupling lugs must snap firmly
into locking position. Gasket must always be used to form a positive seal, and cotter
pins must be installed. Replace gasket when wear, softness or distortion is detected.
Check nozzle holder for thread wear; replace at any sign of wear. Install safety cables
at all connections.
11. NOZZLE
orifice size should be checked and nozzle replaced when worn
1/16” from original size. (No. 5 nozzle has 5/16” orifice diameter; replace when it
measures 3/8”). Threads should be inspected daily for wear and nozzle should be
replaced when wear is detected. Always use a nozzle washer.
12. ABRASIVE
must be a material specifically manufactured for blasting. It
should be properly sized for the job. Check material safety data sheet for free-
silica, cyanide, arsenic, lead and other toxins and avoid use when these toxic,
harmful substances are present.
SURFACE TO BE BLASTED
should be examined for hazardous substances.
Take appropriate protective measures as required by OSHA to ensure the blast
operator, other workers in the vicinity, and any bystanders are properly protected.
©Clemco Industries Corp., Stock No. 20954P, 0692 Rev. F, 06/12
1. Air Com
p
resso
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7. Air Line
Moisture
Se
p
arato
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5. CPF Air Filte
r
6. ASME Code
Bl
as
t M
ac
hin
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8. Remote
Co
ntr
o
l
s
9. Blast Hose 10. Hose Couplings and Safety Cables
11. Appropriately Sized Nozzle
12. Abrasive
4. External or
Helmet Mounted
Carbon Monoxide
Monitor /Alarm
2. Breathing Air Compressor for
High Pressure Respirators3. NIOSH Approved
Supplied-Air Respirator
or Ambient Air Pump for
Low Pressure Respirators
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 1
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
1.0 INTRODUCTION
1.1 Scope of Manual
1.1.1 These instructions cover operation, maintenance,
troubleshooting and replacement parts for the CMS-4
Respirator-Mounted Carbon Monoxide Monitor.
1.1.2 The monitor detects the presence of carbon
monoxide (CO) inside Apollo supplied-air respirators,
where the maximum CO exposure limit in the United
States is 10 parts per million (ppm). This is the limit set
to meet the requirement for Grade D quality breathing air.
The monitor also displays the PEAK level of CO, short-
term exposure limit (STEL), and time-weighted average
(TWA). Instructions to toggle through the PEAK CO
concentrations, STEL, and TWA are explained in
Section 4.3.
1.1.3 All respirator users and those responsible for
maintenance and calibration of the monitor must read
and understand this manual before using the respirator
or operating the monitor.
1.2 Safety Alerts
1.2.1 Clemco uses safety alert signal words, based on
ANSI Z535.4-2011, to alert the user of a potentially
hazardous situation that may be encountered while
operating this equipment. ANSI's definitions of the signal
words are as follows:
This is the safety alert symbol. It is
used to alert you to potential physical
injury hazards. Obey all safety
messages that follow this symbol to
avoid possible injury or death.
NOTICE
Notice indicates information that is considered
important, but not hazard-related, if not
avoided, could result in property damage.
CAUTION
Caution indicates a hazardous situation that, if
not avoided, could result in minor or moderate
injury.
W
ARNING
Warning indicates a hazardous situation that, if
not avoided, could result in death or serious
injury.
DANGER
Danger indicates a hazardous situation that, if
not avoided, will result in death or serious
injury.
1.3 Table of Contents
Topic Page Section
INTRODUCTION ..........................................1 ........... 1.0
Scope of Manual ...........................................1 ........... 1.1
Safety Alerts .................................................1 ........... 1.2
Table of Contents .........................................1 ........... 1.3
Specifications .............................................. 2 ......... 1.4
Description of Operation .............................. 2 ......... 1.5
Ancillary Equipment Requirements ............. 3 ......... 1.6
Components and Functions ......................... 3 .......... 1.7
Case ......................................................... 3 ...... 1.7.1
Sensor Retainer ....................................... 3 ...... 1.7.2
Sensor ...................................................... 3 ...... 1.7.3
Sensor Gasket ........................................... 3 ...... 1.7.4
Charcoal Filter (black) .............................. 3 ...... 1.7.5
Hydrophobic Filter (white) .........................3 ....... 1.7.6
LCD (liquid crystal display) ........................ 3 ...... 1.7.7
Control Buttons ......................................... 4 ...... 1.7.8
Alarm-Lights ............................................. 5 ...... 1.7.9
Audible Alarm ........................................... 5 .... 1.7.10
Vibrating Alarm ......................................... 5 .... 1.7.11
Lithium Battery (a spare is included) ......... 5 .... 1.7.12
SETUP - INSTALLATION, STARTUP,
AND OPERATION .......................................5 ........... 2.0
Installation .....................................................5 ........... 2.1
Prepare Mounting Clip ...............................5 ........ 2.1.1
Installation in Apollo 20 .............................5 ........ 2.1.2
Installation in Apollo 60 and Apollo 600 ....6 ........ 2.1.3
Turning ON and Startup Procedure ..............6 .......... 2.2
Setting Date and Time ..................................6 ........... 2.3
Performing a Fresh-Air Adjustment ..............7 .......... 2.4
Turning OFF the CMS-4 ...............................7 .......... 2.5
ALARMS ......................................................8 ........... 3.0
Alarm Indications ..........................................8 ........... 3.1
Alarm Indications Table ................................8 ........... 3.2
Resetting CO Alarms ....................................8 ........... 3.3
Responding to CO Alarms ............................8 ........... 3.4
CO Alarm ...................................................8 ........ 3.4.1
Over Range Alarm .....................................8 ........ 3.4.2
Battery Alarms ...........................................8 ........ 3.4.3
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 2
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
Sensor Failure Alarm .............................. 10 ......... 3.4.4
Clock Failure Alarm ................................. 10 ......... 3.4.5
System Failure Alarm .............................. 10 ......... 3.4.6
Alarm Setpoints .......................................... 10 ............ 3.5
MANEUVERING THROUGH MENU MODES 10 .............. 4.0
Measuring Mode ......................................... 10 ........... 4.1
Entering Measuring Mode ....................... 11 ......... 4.1.1
User Mode .................................................. 11 ............ 4.2
Entering User Mode ................................ 11 ......... 4.2.1
Tips for Using User Mode ....................... 11 ......... 4.2.2
Display Mode .............................................. 12 ............ 4.3
Entering Display Mode ............................ 12 ......... 4.3.1
Tips for Using Display Mode ................... 13 ......... 4.3.2
Display Mode Menu Item (Ref. Table) ........ 13 ......... 4.3.4
Displaying the PEAK Screen .................. 14 ......... 4.3.5
Displaying the STEL Screen ................... 14 ......... 4.3.6
Displaying the TWA Screen .................... 14 ......... 4.3.7
Maintenance Mode ..................................... 14 ............ 4.4
Return to Factory Default Settings ........... 14 ......... 4.4.1
Entering Maintenance Mode .................... 15 ......... 4.4.2
Performing a Default (M.DEF) ................. 15 ......... 4.4.3
CALIBRATION, FRESH-AIR ADJUSTMENTS,
BUMP TEST, and STORAGE ................... 15 ........... 5.0
Calibration Schedule ............................. 16 ............ 5.1
Performing Fresh-Air Adjustments ........ 16 ........... 5.2
Fresh-Air Adjustment with Ambient Air .. 16 ......... 5.2.1
Fresh-Air Adj. with 0 PPM CO Test Gas 16 ......... 5.2.2
Prepare Calibration Connector ................ 17 ............ 5.3
Connect Calibration Cup to Monitor ....... 17 ............ 5.4
Remove Calibration Cup from Monitor ... 18 ............ 5.5
Performing a Bump Test ........................ 18 ............ 5.6
Calibrating the CMS-4 ............................ 19 ............ 5.7
Storing the Calibration Kit and Test Gas .. 20 ............ 5.8
MAINTENANCE ......................................... 20 ............ 6.0
Replacing the Lithium Battery ............... 20 ........... 6 . 1
Replacing the Sensor ............................ 21 ........... 6.2
Replacing the Charcoal Filter ................ 22 ........... 6.3
Replacing the Hydrophobic Filter .......... 22 ........... 6.4
TROUBLESHOOTING ............................... 23 ........... 7.0
REPLACEMENT PARTS ............................ 24 ........... 8 . 0
System Replacement Parts .................... 24 ............ 8.1
Monitor Replacement Parts .................... 24 ............ 8 . 2
1.4 Specifications
Target Gas ................. Carbon Monoxide (CO)
Detection Range ...................... 0 to 1000 ppm
Display Increment 0 ‒ 500 .................. 1 ppm
0 ‒ 1000 ................ 5 ppm
CO Sensor ............................ Electrochemical
CO Test Gas ....................................... 25 ppm
Warning Alarm .................................... 10 ppm
Alarm Point, Low ................................. 10 ppm
Alarm Point, High ................................ 10 ppm
1.5 Description of Operation
W
ARNING
The CMS-4 detects carbon monoxide, which
can be life threatening. When using the CMS-4,
follow the instructions, maintenance,
calibration schedule, and warnings in this
manual to assure proper and safe operation of
the monitor and to minimize the risk of personal
injury. Carbon monoxide poisoning can result
in death or serious injury.
1.5.1 The CMS-4 respirator-mounted carbon
monoxide monitor detects the presence of carbon
monoxide (CO) inside a supplied-air respirator.
1.5.2 CO is displayed in parts per million (ppm). The
current maximum exposure limit in the United States for
carbon monoxide in Grade D compressed breathing air
is 10 parts per million. If CO concentrations reach the
exposure limit, three alarms occur. The audible alarm
alternates between a high and low tone at about once
per second, the LED lights flash twice per second, and
the vibrator pulses twice per second. If an alarm occurs,
remove the respirator as soon as it is safe to do so.
1.5.3 The CMS-4 offers a full range of features,
including:
Digital liquid crystal display (LCD)
Visual, audible, and vibrating alarms that alert the
user to CO concentrations, malfunction, low
battery, and other conditions as noted within this
manual.
Low battery alarm
Sensor fail alarm
Current time display
Up to 4,000 hours of operation from one battery
* Peak is the highest CO concentration since the
monitor was last turned on. Refer to Section 4.3.5
for additional information on the PEAK screen.
* STEL is an acronym for short-term exposure
limit. It is the average reading over the last 15
minutes. Refer to Section 4.3.6 for additional
information on the STEL screen.
* TWA is the time-weighted average over the last
8 hours. Refer to Section 4.3.7 for additional
information on the TWA screen.
* Although some may find PEAK concentrations,
STEL, and TWA information useful, it is not pertinent
for supplied-air respirator use because the maximum
exposure limit for Grade D breathing air is 10 ppm.
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 3
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
1.6 Ancillary Equipment Requirements
1.6.1 In addition to the monitor, the following
equipment is required to operate and maintain the CMS-
4 Monitor:
Calibration connector with 0.5 LPM fixed-flow
slide valve, tubing, and calibration cup: Stock
No. 29767.
25 ppm Test Gas: Stock No. 25573.
1.7 Components and Functions
Items included with the monitor package are shown in
Figure 1. Callouts shown in Figure 2 are items needed to
perform routine functions.
1.7.1 Case: The CMS-4’s sturdy, high-impact plastic
case is dust proof, water resistant, and .radio frequency
(RF) resistant.
The digital LCD is visible through the clear window on
the front of the case. During normal operation
(Measuring Mode), it displays
CO (Type of gas detection)
Remaining battery life
Current time
The heart symbol pulses, indicating the monitor is
in normal operating status.
In other modes, the LCD displays functions necessary to
operate and maintain the monitor. Refer to menu modes
in Section 4.0.
Below the LCD are two black control buttons: AIR and
POWER/MODE. The operator uses the buttons to make
selections and adjustments though various menus. Refer
to Section 1.7.8 for button functions
To the left of the LCD is the audible alarm opening,
which is located inside the case.
1.7.2 Sensor Retainer: The sensor retainer is located
on the right side of the case and allows access to the
filters, sensor gasket, and sensor.
1.7.3 Sensor: The sensor is held in its socket by the
sensor retainer. The CO sensor is an electrochemical
cell that consists of two precious-metal electrodes in a
dilute acid electrolyte. A gas-permeable membrane
covers the sensor face and allows gas to diffuse into the
electrolyte. The gas reacts in the sensor and produces a
current proportional to the concentration of the target
gas. The current is amplified by the CMS-4’s circuitry,
converted to a measurement of gas concentration, and
displayed on the LCD.
1.7.4 Sensor Gasket: The sensor gasket fits over
and seals around the sensor.
1.7.5 Charcoal Filter (black): A black charcoal filter is
placed into a recess in the filter gasket over the CO
sensor. The charcoal filter disk scrubs H2S and certain
hydrocarbons out of the sample to avoid false CO
readings. If false or elevated CO readings are noticed,
especially in the presence of H2S, change the charcoal
filter. Refer to Section 6.3: Replacing the Charcoal Filter.
1.7.6 Hydrophobic Filter (white): The white, circular
hydrophobic filter sits into the larger recess on the filter
gasket, on top of the charcoal filter.
OPEN
O
LE
S
C
CLEMCO
Figure 1
1.7.7 LCD: A digital LCD (liquid crystal display) is
visible through the clear plastic window in the top of the
case. During normal operation in Measuring Mode, the
LCD displays CO concentrations, the time, remaining
battery life, and the heart symbol pulses, indicating the
monitor is in normal operating status. The LCD also
shows information for each of the CMS-4’s operating
modes. Once the monitor is ON, pressing the
Power/Mode or Air control button turns on the LCD
backlight for 30 seconds. NOTE: Except in dark places,
the display is easily seen without the backlight.
Calibration Cup
Calibration
Connector
0.5 LPM Slide Valve
Velcro®
Hook Tape
CMS-4 Monitor
Velcro®
Loop Tape
Transparent
Mounting Strip
25 ppm CO
Test Gas
Tubing 3/16" x 2 Ft
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 4
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
CLEMCO
Figure 2
1.7.8 Control Buttons: Two control buttons, AIR and
POWER/MODE, are located below the LCD. The
functions performed by the control buttons are
summarized in the table in Figure 3.
They turn the CMS-4 ON and OFF. They control what is
displayed on the LCD, including time, gas
concentrations, as well as other messages. They also
allow for a fresh-air adjustment, change alarm points,
change the time, and calibrate the instrument.
NOTE: Important points to remember are:
1. The AIR button scrolls through items on the
menus much like a cursor. Once the menu
item is selected, use the POWER/MODE to
enter the selection into the microprocessor.
2. 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.
NOTE: Each screen displays for 20 seconds. If you
do not press a button within 20 seconds, the CMS-4
automatically returns to Measuring Mode.
Button Function
POWER/MODE
Turns the monitor ON and OFF.
Activates Display Mode.
Enters instruction into CMS-4’s
microprocessor.
Resets alarm after an alarm
condition.
Also
Turns the LCD backlight on
(when monitor is on).
.
AIR
Activates the Demand Zero
function (adjusts the CMS-4’s
fresh-air baseline).
Enters instructions into the
CMS-4’s microprocessor.
Increases the value of a
parameter available for
adjustment.
Scrolls through parameter
options.
Also
Turns the LCD backlight on
(when monitor is on).
Figure 3
CMS-4 callouts shown are items
needed to perform routine functions.
LCD Window
Audible Alarm Opening Sensor Retainer
AIR Button
Senso
r
Sensor Orientation Slots
Mounting Clip
Velcro® Hook Tape
Velcro® Loop Tape
LED Alarm-Lens
Sensor Retainer
Cover Screw
Hydrophobic Filter (white)
Charcoal Filter (black)
Sensor Gasket
POWER/MODE Button
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 5
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
1.7.9 Alarm-Lights: Two LED alarm-lights are located
above the LCD. The red alarm-lights show through
the reflective lenses. The LED’s alert the user to CO
gas, low battery, and failure alarms. The lights flash
once during the startup sequence.
1.7.10 Audible Alarm: An opening on the left side of
the top case allows the alarm’s sound to exit the case.
The alarm sounds for CO gas, unit malfunctions, low
battery voltage, and as an indicator during normal use of
various display options. It beeps once during the startup
sequence. Refer to Section 3.1 for alarm indications.
1.7.11 Vibrating Alarm: A vibrating motor mounted
inside the case vibrates for CO gas alarms, unit
malfunctions, and as an indicator during normal use of
the various modes of the CMS-4. It vibrates briefly
during the startup sequence.
1.7.12 Lithium Battery: A CR2450, 3.0-volt lithium
coin battery powers the CMS-4. The battery icon in the
upper right of the LCD shows remaining battery life.
When the CMS-4 detects a low battery voltage, a low
battery warning is activated. When battery power is too
low for Measuring Mode, the CMS-4 sounds a dead
battery alarm. (Gas reading disappears, FAIL appears in
the middle of the screen, BATTERY appears at the
bottom of the screen, LEDs flash once per second, and
audible alarm double pulses once per second.)
A spare battery is provided with the monitor; refer to
Section 6.1 for instructions on replacing the battery.
2.0 SETUP ‒ INSTALLATION, STARTUP AND
OPERATION
2.1 Installation
This section explains the initial installation of the CMS-4
to the inside of the respirator.
2.1.1 Prepare Mounting Clip
2.1.1.1 Adhere Velcro® loop to CMS-4 mounting clip:
Trim the Velcro® loop strip to 3/4" x 1". Remove the
backing and adhere it to the bottom of the monitors
mounting clip, as shown in Figure 4.
2.1.2 Installing Monitor in Apollo 20 Respirator
Refer to Section 2.1.3 for installing the monitor in Apollo 60
and Apollo 600 respirators.
2.1.2.1 If not already done, adhere the Velcro® loop to
CMS-4 mounting clip, per Section 2.1.1.
Figure 4
2.1.2.2 Open the lens frame and remove the lenses.
2.1.2.3 Don (put on) the helmet and temporarily place the
monitor on one of the side walls of the window extension,
as shown in Figure 5. Make sure the monitor’s LED lights
are visible.
2.1.2.4
Mark the location and remove the monitor and helmet.
Figure 5
2.1.2.5 Remove backing from the Velcro® hook tape and
adhere it at the marked location (the loop tape adheres to
the mounting clip on the monitor). Use the Velcro® to
attach the monitor to the hood, positioning it so the
control buttons face toward lenses and alarm-lights
toward the inside of the respirator. Don the helmet to
make sure the monitor’s alarm-lights are visible from
inside the helmet.
2.1.2.6 Remove the monitor and prepare it for operation,
per Section 2.2.
2.1.2.7 Replace the lenses and lens frame assembly.
2.1.2.8 After the initial setup is done, remove and
reattach the monitor using the Velcro®.Remove the
Make sure the monitor’s
LED lights are visible when
the helmet is donned, mark
its location inside of the
window extension, and
attach Velcro® hook tape.
3/4" x 1-1/4"
Velcro® Loop Strip
Back of Monitor
3/4" x 1-1/4"
Velcro® Loop Strip
Mounting Clip
Mounting Clip
End View of Monitor
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 6
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
monitor when doffing (taking off) the respirator at
the end of the shift and to do any service or
calibration, including turning the monitor on and off.
Do this to make sure the monitor is fully functional before
placing it inside the helmet.
W
ARNING
Remove the monitor at the end of the shift, turn
it off, and store it in a clean environment. At the
beginning of each shift, turn on the monitor and
make sure it is fully functional before installing it
in the helmet. Failure to do so could result in CO
poisoning and death.
2.1.3 Installing Monitor in Apollo 60 and Apollo
600 Respirators
Refer to Section 2.1.2 for mounting the monitor in Apollo 20
respirators.
2.1.3.1 If not already done, adhere the Velcro® loop to
CMS-4 mounting clip, per Section 2.1.1.
2.1.3.2 Place the transparent mounting strip on the
inside of the inner lens, and into the same window
gasket groove as the inner lens, as shown in Figure 6.
Position it so it is within peripheral vision toward the side
of the window opening.
Figure 6
2.1.3.3 Remove backing from the Velcro® hook tape
and adhere it to the mounting strip (the loop tape
adheres to the mounting clip on the monitor) making sure
the LED lights are visible from inside the helmet.
2.1.3.4 Attach the monitor to the strip, positioned so the
buttons face toward the outer edge of the window
opening and LED lights toward the center of the window
opening. Don (put on) the helmet to make sure the
monitor LED lights are visible from inside the helmet.
2.1.3.4 Remove the monitor and prepare it for operation.
2.1.3.6 After the initial setup is done, remove and
reattach the monitor from inside the helmet. Remove
the monitor when doffing the respirator at the end of
the shift and to do any service or calibration,
including turning the monitor on and off. Do this to
make sure the monitor is fully functional before placing it
inside the helmet.
W
ARNING
Remove the monitor at the end of the shift, turn
it off, and store it in a clean environment. At the
beginning of each shift, turn on the monitor and
make sure it is fully functional before installing it
in the helmet. Failure to do so could result in CO
poisoning and death.
2.2 Turning ON and Startup Procedure
This section explains how to startup the CMS-4 and to
prepare it for operation.
2.2.1 Press and hold the POWER/MODE button until the
alarm beeps.
2.2.2 The monitor goes though the warm-up
sequence: all LCD segments turn on, backlight turns on,
and instrument beeps and vibrates. It then cycles
through calibration status, date/time, remaining battery
life, target gas, and alarm setpoint screens.
2.2.3 After the warm-up sequence, the monitor goes
into Measuring Mode (normal operating mode). It beeps,
the LCD screen (as shown in Figure 8) shows CO,
remaining battery life, a pulsing heart symbol (indicating
the monitor is in normal operating status), CO
concentrations (ppm), and the date and time (when set
per Section 2.3).
W
ARNING
If the monitor is in low battery warning, change
the battery as soon as possible. Do not use the
respirator if the dead battery warning is alarmed.
The monitor does not detect carbon monoxide
when it is in dead battery alarm, which can result
in death if carbon monoxide is present.
2.3 Setting the Date and Time ‒ Figure 7
NOTE: When using the CMS-4 for the first time, check
the current time and verify that it is correct for your time
zone. If it is not, set the time as follows:
As seen from inside the hood,
the strip is inserted into the
groove in the window gasket.
Attach Velcro® hook tape to
the inside of the strip. Make
sure the monitor’s LED lights
are visible when the helmet is
donned.
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 7
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
2.3.1 With the instrument turned OFF, press and hold
AIR and POWER MODE. Release when you hear a
beep. BUMP is displayed.
2.3.2 Press and release the AIR button to scroll to
DATE.
2.3.3 Press and release POWER/MODE. The date
and time will be displayed with the year flashing.
2.3.4 Use AIR to display the desired year. 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.
Figure 7
2.3.5 Press POWER MODE to save it. The month
starts to flash.
2.3.6 Use AIR to adjust the month. Press POWER
MODE to save it. The day starts to flash.
2.3.7 Repeat the process to set the day, hour, and
minute. The time is shown in military format with the
hour going from 0 to 24.
2.3.8 Use AIR to scroll to START. Press and release
POWER MODE to begin the warm-up sequence. NOTE:
If no button is pressed within 20 seconds, the monitor
will automatically return to measuring mode.
2.4 Performing a Fresh-Air Adjustment
NOTE: Before using the CMS-4, set the fresh-air
baseline to ensure accurate gas readings.
Additional fresh-air adjustment information is in Section
5.2.
2.4.1 Make sure the monitor is in a fresh-air
environment. This is an environment free of toxic or
combustible gases and of normal oxygen content
(20.9%).
2.4.2 Turn on the monitor by pressing and holding the
POWER/MODE button until the alarm beeps.
2.4.3 The monitor goes though the warm-up
sequence, as noted in Paragraph 2.2.2.
2.4.4 After the warm-up sequence, the monitor goes
into Measuring Mode (normal operating mode), it beeps,
and the LCD display is as shown in Figure 8.
2.4.5 Press and hold the AIR button. While pressing
the AIR button, the LCD displays HOLD, a prompt to
keep pressing the AIR button.
2.4.6 When the fresh-air baseline has been set, the
LCD displays Adj, and a prompt to RELEASE the AIR
button. The monitor beeps once and the screen displays
0 ppm, as shown in Figure 8.
2.4.7 The monitor is now in Measuring Mode (normal
operation). After an initial calibration per Section 5.7, the
CMS-4 is ready for monitoring.
Figure 8
2.5 Turning OFF the CMS-4
2.5.1 Remove the monitor after doffing (taking off) the
respirator at the end of the shift.
2.5.2 Press and hold the POWER/MODE button.
2.5.3 OFF will appear on the screen and the monitor
will beep for about five seconds. Release the button
when OFF disappears from the screen and the LCD is
blank. The monitor is off.
Gas
Battery Icon
Current Gas (CO)
Concentration
Time
LCD Window
C
O
0
12:34
ppm
Heart Symbol
Pulses, indicating the
monitor is in normal
operating status.
Year Battery Icon
Date 2019
8.03
Time
12:
3
4
LCD Window
Heart Symbol
Pulses, indicating the
monitor is in normal
operating status.
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.
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 9
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
ALARM TYPES AND INDICATIONS
ALARM TYPE VISUAL INDICATIONS OTHER ALARM INDICATIONS
WARNING
Concentration of CO
rises above the Warning
setting (10 ppm).
Gas reading flashes.
Warning appears at the bottom of the LCD.
Alarm LEDs flash.
Backlight turns on.
Alternating high-low tone ‒
chirps about twice per second.
Vibrator pulses once per second.
Alarm
Concentration of CO
rises above alarm
setting of 10 ppm.
Gas reading flashes.
Alarm appears at the bottom of the LCD.
Alarm LEDs flash.
Backlight turns on.
Alternating high-low tone ‒
chirps about twice per second.
Vibrator pulses once per second.
Alarm H
Concentration of CO
rises above the high
alarm setting of 10 ppm.
Gas reading flashes.
Alarm H appears at the bottom of the LCD.
Alarm LEDs flash.
Backlight turns on.
Alternating high-low tone ‒
chirps about twice per second.
• Vibrator pulses once per second.
TWA or STEL
Concentration of CO
rises above the TWA or
STEL alarm setting.
Gas reading flashes.
TWA or STEL appears at the bottom of the
LCD.
Alarm LEDs flash once per second.
Backlight turns on.
Alternating high-low tone ‒
chirps about twice per second.
•
Vibrator pulses once per second.
Over Range
An over range condition
indicates an extreme CO
concentration.
Gas reading is replaced with a flashing
ΠΠΠΠ.
Gas name and units flash.
OVER appears at the bottom of the LCD.
Alarm LEDs flash twice per second.
Backlight turns on.
Alternating high-low tone ‒
chirps about twice per second.
Vibrator pulses once per second.
Low Battery Warning The last bar in the battery icon disappears
and the battery icon starts flashing.
None.
Dead Battery Alarm
Alarm LEDs flash once per second.
Gas reading disappears.
FAIL appears in the middle of the screen
and BATTERY appears at the bottom of
the screen.
Alarm LEDs flash once per second
Double pulsing beep occurring about
once per second
Sensor Failure FAIL appears in the middle of the screen and
SENSOR appears at the bottom of the
screen.
Alarm LEDs flash once per second.
Double pulsing beep occurring about
once per second.
System Failure Gas reading replaced by FAIL.
Time replaced by SYS below FAIL.
Double pulsing beep occurring about
once per second.
Clock Failure • FAIL 050 CLOCK appears on the screen.
Alarm LEDs flash once per second.
Double pulsing beep occurring about
once per second.
Figure 9
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 10
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
3.4.4 Responding to a Sensor Failure Alarm
3.4.4.1 Perform a calibration, as described in Section 5.7.
3.4.4.2 If the sensor failure alarm continues, replace the
sensor, as described in Section 6.2.
3.4.4.3 If the sensor failure alarm continues after
replacing the sensor, contact the authorized Clemco
distributor the monitor was purchased through for further
instructions.
3.4.5 Responding to Clock Failure Alarm ‒ Figure 10
A clock failure alarm occurs if the monitor’s internal clock
malfunctions.
Figure 10
3.4.5.1 If the error code is 050, press and release
POWER/MODE to continue into Measuring Mode if the
instrument must be used temporarily.
3.4.5.2 Attempt to set the date using the DATE menu
item in User Mode. Refer to Section 2.3: Setting Date
and Time.
3.4.5.3 If the date cannot be set correctly, contact the
authorized Clemco distributor the monitor was
purchased through for further instructions.
3.4.6 Responding to a System Failure Alarm
3.4.6.1 If a system failure occurs, the system failure
screen will display an error code similar to that shown in
Figure 11.
3.4.6.2 If the System Failure error code is anything but
031, as shown in Figure 11, the instrument cannot be
used. Contact Clemco Industries as soon as possible.
If the error code is 031, press and release
POWER/MODE to continue into Measuring Mode if the
instrument must be used temporarily.
Figure 11
3.5 Alarm Setpoints
3.5.1 There are six alarm points. The alarm points and
their factory settings are summarized below. There are
no adjustments of alarm setpoints.
*F. S. (Full Scale): Is triggered when CO
concentrations go over the scale maximum of 1000
ppm.
WARNING: Is triggered when CO concentrations
reach 10 ppm, which is the maximum exposure limit
for Grade D compressed air in the United States.
Alarm: Is triggered when CO concentrations reach
10 ppm.
Alarm H: Because the maximum exposure limit for
grade D breathing air is 10 ppm of CO, the high
alarm is also set to alarm when CO concentration
reaches 10 ppm. This alarm is a rapid, twice per
second beep and stresses the urgency to remove
the respirator as soon as it is safe to do so.
*TWA Alarm: TWA is an acronym for time-weighted
average; it is the average reading of CO during the
last eight hours. The alarm triggers when TWA
reaches 25 ppm
*STEL Alarm: STEL is an acronym for short-term
exposure limit; it is the average reading of CO
during the last 15 minutes. The alarm triggers when
STEL reaches 200 ppm
* Although some may find Full Scale, TWA and STEL
information useful, it is not relevant for supplied-air
respirator use because the maximum exposure limit for
Grade D breathing air is 10 ppm.
4.0 MANEUVERING THROUGH MENU MODES
This section helps the user maneuver through CMS-
4 menu items. The menu item under each mode is
listed in sequential order.
4.1 MEASURING MODE ‒ Measuring Mode is the
normal operating mode used to detect CO and observe
031
SYSTEM
FAIL
050
CLOCK
FAIL
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 11
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
any alarm indications. The monitor must be in measuring
mode before it is placed in the respirator.
W
ARNING
The CMS-4 is not operational as a carbon
monoxide monitor unless it is Measuring 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.
4.1.1 Entering Measuring Mode
4.1.1.1 Make sure the monitor is OFF. (Press and hold
POWER/MODE until the screen is blank.)
4.1.1.2 Turn on the monitor by pressing and holding the
POWER/MODE button until the alarm beeps.
4.1.1.3 After the warm-up sequence, the monitor goes
into Measuring Mode (normal operating mode) when the
alarm beeps and the LCD screen is as shown in Figure
12 and indicates the current gas concentration. After an
initial calibration per Section 5.7, the CMS-4 is ready for
monitoring.
Figure 12
4.2 USER MODE ‒ User Mode is used to do bump
tests, calibrate the monitor, and make minor screen
adjustments used primarily to calibrate the monitor.
W
ARNING
The CMS-4 is not operational as a carbon
monoxide monitor while in User 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 from carbon monoxide poisoning.
4.2.1 Entering User Mode
Begin with the monitor OFF.
4.2.1.1 Press and hold the AIR button, then press and
hold the POWER/MODE button. Release both buttons
as soon as the monitor beeps.
4.2.2 Tips for Using User Mode
To scroll from one menu item to the next, press
AIR and release it as soon as the alarm beeps.
To reverse the scroll direction:
a. Press and hold AIR.
b. Immediately press POWER/MODE and then
release both buttons.
4.2.3 To cycle through each of the user mode menus,
press POWER/MODE and release it as soon as the
alarm beeps
4.2.4 The first screen to appear will be BUMP, as
shown in Figure 13.
Figure 13
Refer to Section 5.6 to perform a bump test.
4.2.5 To scroll to the next menu item (GAS CAL),
press and release POWER/MODE. Continue to press
and release POWER/MODE to scroll through every
menu item.
4.2.6 Refer to the table in Figure 14 on the following
page for a sequential list of the items found in User
Mode, the page that the menu item’s instructions can be
found on, and a short description of the menu item.
4.2.7 Display Firmware Version.
4.2.7.1 Enter User Mode, per Section 4.2.1.
4.2.7.2 Press and release AIR and scroll to ROM/SUM.
4.2.7.3 Press and release POWER/MODE. The screen
will cycle through the boards and display the ROM as
the top value and SUM as the bottom value.
Gas
Battery Icon
Current Gas (CO)
Concentration
Time
LCD Window
C
O
0
12:34
ppm
Heart Symbol
Pulses, indicating the
monitor is in normal
operating status.
BUM
P
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 12
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
SEQUENTIAL LIST OF USER MODE MENU ITEMS
Number of Times
POWER/MODE (beeps)
is pressed and released
to reach menu item.
User Mode Menu Items Description Section in Which
Adjustments are Found
ONE BUMP Perform bump test. Refer to Section 5.6.
TWO GAS CAL Perform a calibration. Refer to Section 5.7.
THREE CAL SET Changes parameters related to
calibration.
No adjustment required.
Do not adjust.
FOUR BUMP SET Changes setting related to bump testing. No adjustment required.
Do not adjust.
FIVE ALARM-P Set and alarm points. No adjustment required.
Do not adjust.
SIX LUNCH Resets TWA and STEL readings at
startup.
No adjustment required.
Do not adjust.
SEVEN BEEP Sets confirmation beep parameters. No adjustment required.
Do not adjust.
EIGHT BL TIME How long backlight stays on. No adjustment required.
Do not adjust.
NINE KEY.TONE Sets whether or not alarm beeps when
button is pressed.
Factory setting is ON.
Do not adjust.
TEN DISP.SET Sets user ID, Station ID, and Alarm
Volume.
Factory setting is ON.
Do not adjust.
ELEVEN E-CAL A-CAL item appears in GAS CAL menu.
E-CAL. Factory setting is OFF.
Factory setting is OFF.
Do not adjust.
TWELVE DATE Sets the Date and Time. Refer to Section 2.3.
THIRTEEN PASS W When set to ON, password required
to enter User Mode.
Factory setting is OFF.
Do not adjust.
FOURTEEN ROM/SUM Shows firmware version and
firmware checksum.
Refer to Section 4.2.7
to display firmware.
FIFTEEN START Enters Measuring Mode from User
Mode.
Press and release
POWER/MODE.
Figure 14
4.3 DISPLAY MODE ‒ Display mode is used to
view and change settings of menu items noted in the
table in Figure 15. Refer to the table for a list of the items
found in Display Mode, a short description of the menu
item’s function, and the section that the menu item’s
instructions can be found.
W
ARNING
The CMS-4 is not operational as a carbon
monoxide monitor while in Display 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 from carbon monoxide poisoning.
4.3.1 Entering Display Mode
4.3.1.1 Enter Display Mode using one of the two
following methods:
1. From Measuring Mode (normal operating mode)
press POWER/MODE and release it as soon as the
alarm beeps. The monitor is now in Display Mode.
2. If the monitor is OFF:
a. Press and hold POWER/MODE until the alarm
beeps.
b. After the warm-up sequence, the monitor goes into
Measuring Mode (normal operating mode). It beeps,
the LCD screen (as shown in Figure 12) shows CO,
remaining battery life, a pulsing heart symbol
(indicating the monitor is in normal operating status),
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 13
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
CO concentrations (ppm), and the date and time
(when set per Section 2.3). Review Section 2.2:
Turning On and Startup Procedure.
c. From Measuring Mode (normal operating mode),
press POWER/MODE and release it as soon as the
alarm beeps. The monitor is now in Display Mode.
4.3.2 Tips for Using Display Mode
To scroll from one menu item to the next, press
POWER/MODE and release it as soon as the
alarm beeps.
To enter an item, press and release AIR.
To reverse the direction of a flashing parameter,
(i.e. from increasing to decreasing or vice
versa):
a. Press and hold AIR.
b. Immediately press POWER/MODE and then
release both buttons.
NOTE: Each screen displays for 20 seconds. If a
button is not pressed within 20 seconds, the CMS-4
automatically returns to Measuring Mode.
4.3.3 To cycle through each of the following display
mode menus, press POWER/MODE and release it as
soon as the alarm beeps. Refer to the Table in Figure 15
for additional information.
4.3.4 DISPLAY MODE MENU ITEMS (Reference
Table)
Menu items shown with "No Adjustment" have
factory settings that should not be adjusted. If
operator accidentally enters an unfamiliar menu, DO
NOT PUSH BUTTONS THAT COULD CHANGE THE
MONITORS FUNCTION. Refer to Section 4.4 to return
to factory settings.
SEQUENTIAL LIST OF DISPLAY MODE MENU ITEMS
Number of times
POWER/MODE (beeps)
is pressed and released
to reach menu item.
Display Mode Menu Items Description Sections In Which
Adjustments Are Found
ONE PEAK Displays peak (highest) CO
concentration since the monitor was last
turned on.
No adjustment required.
Do not adjust.
TWO STEL Displays short-term exposure limit. This
reading is the average reading over the
last 15 minutes.
No adjustment required.
Do not adjust.
THREE TWA Displays time-weighted average over the
last 8 hours.
No adjustment required.
Do not adjust.
FOUR dISP (CAL DATA
LCD screen cycles
through CAL.DATA,
YES/AIR, and NO/MODE.
Shows date of last calibration.
Factory set to ON.
No adjustment required.
Do not adjust.
FIVE DATE and TIME Displays Year, Date, and Time. Set per Section 2.3.
SIX TEMP Displays ambient temperature in Celsius. Not adjustable.
SEVEN dISP (ALARM-P
LCD screen cycles
through ALARM-P,
YES/AIR, and NO/MODE
View alarm setpoints. No adjustment required.
Do not adjust.
EIGHT HI (Alarm Beep Volume) Sets the buzzer volume. Factory set to
high.
No adjustment required.
Do not adjust.
NINE Returns to measuring mode.
Figure 15
CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 14
© 2019 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 29872
4.3.5 Displaying the PEAK Screen
4.3.5.1 The PEAK screen displays the highest CO
concentration detected since the CMS-4 was turned ON.
The PEAK reading is stored until a higher level is
detected, the PEAK reading is cleared, or the CMS-4 is
turned OFF.
4.3.5.2 PEAK readings are automatically cleared when
the monitor is turned OFF or cleared (as noted beginning
with Paragraph 4.3.5.3), and restarted when the monitor
is turned ON.
4.3.5.3 Make sure the monitor is in Display Mode, as
noted in Section 4.3.1.
4.3.5.4 Press and release POWER/MODE until PEAK
appears in the lower-left corner of the LCD screen, as
shown in Figure 16.
Figure 16
4.3.5.5 To clear the peak reading, do the following while
remaining in Display Mode:
1. While PEAK appears on the screen, press Air
and hold (as shown in the left image in Figure
17), and release it when prompted (as shown in
right image).
2. The peak reading will be reset and the display
will return to the Peak Screen.
3. After 20 seconds, the monitor will return to
Measuring Mode.
Figure 17
4.3.6 Displaying the STEL Screen ‒ Figure 18
4.3.6.1 The STEL Screen displays the short-term
exposure limit (STEL) reading. The STEL reading is the
average reading over the last 15 minutes. There are no
changes or resets on the STEL menu.
Figure 18
4.3.7 Displaying the TWA Screen
4.3.7.1 The TWA Screen displays the time-weighted
average (TWA) reading. The TWA reading is the
average reading over the last 8 hours. If 8 hours have
not elapsed since the last time the TWA reading was
cleared, the average is still calculated over 8 hours. The
missing readings are assigned a value of 0.
4.3.8 TWA readings are automatically cleared when
the monitor is turned OFF and begins collecting new
TWA readings when the monitor is turned ON.
4.4 MAINTENANCE MODE
NOTE: Maintenance Mode Changes settings that
operationally affect the instrument.
W
ARNING
Maintenance Mode settings affect the operation
of the monitor and should only be cautiously
changed. Changing settings on an impulse can
lead to false or no alarms, resulting in carbon
monoxide poisoning, death, or serious injury.
4.4.1 Return to Factory Default Settings: The only
function we advise using in Maintenance Mode is to
default to factory settings when menu items have been
unintentionally changed. These changes are identified
when menu items on the screen do not match menu
items in the instructions.
RELEAS
E
CL
R
HOL
D
CL
R
1
5
PEAK
ppm
C
O
The number shown in the
illustration is for reference
only. The number shown
on the LCD screen will be
the actual peak reading.
The number shown in
the illustration is for
reference only. The
number shown on the
LCD screen will be the
average STEL reading
over the last 15 minutes.
C
O
0
STEL
ppm
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
W
ARNING
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
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