Clemco CMS-4 Operation Manual

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CMS-4

IN-HELMET CARBON MONOXIDE MONITOR

O. M. 29872

DATE OF ISSUE: 07/2019 REVISION:

WARNING

Do not use this equipment before READING this

One Cable Car Dr.

Washington, MO 63090

Phone (636) 239-4300

ax (800) 726-7559

Email: info@clemcoindustries.com

www.clemcoindustries.com

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.

PREFACE

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• 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.

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OSHA regulations relating to ab rasi ve bla sting are con tained in the Code o f Federal Regulation s, Title 29 (29 C FR 1910 Gene ral Indust ry ; 1915 Maritime; 1926 Con s truction). The most pertinent include: 1910.94 Ventilation, 1910 .95 Occupational Noise Exposure , 1 910.132 Personal Protective Equipment, 1910.133 Eye and Face Prote cti on, 191 0.134 Respiratory Protection, 1910 .1 35 Head Protection,

1910.244 (b) Remote Controls. Consult www.osha.gov for complete information.

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NOTICE

PRODUCTS AND THIS INFORMATIONAL MATERIAL

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PURCHASERS

AND USERS OF

OUR

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.

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The products described in this material, and the information relating to these products, are intended for knowledgeable, experienced users.

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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.

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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.

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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.

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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.

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The blast operator and all workers in the vicinity must be properly protected from all job site hazards including those hazards generated by blasting.

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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.

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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.

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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

Email: info@clemcoindustries.com

Website: www.clemcoindustries.com

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PREFACE

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OPERATIONAL INSTRUCTIONS

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 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.

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 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.

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 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.

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 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.

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• Breathing air quality must be at least Grade D, as defined by the Compressed Gas Association specification G-7.1, per OSHA Regulation 29 CFR

1910.134. When compressed air is the breathing air source, a Clemco CPF (suitable sorbent bed filter) should be used. Respirator hose connecting the respirator to the filter must be NIOSH approved. Non- approved hose can cause illness from chemicals employed to manufacture the hose.

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• 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.

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For additional information, consult:

Occupational Safety and Health Administration (OSHA) - www.osha.gov Compressed Gas Association (CGA) - www.cganet.com The Society 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

OPERATOR SAFETY EQUIPMENT

• Clemco respirators DO NOT remove or protect against carbon monoxide or any other toxic gas. Monitoring devices must be used in conjunction with the respirator to ensure safe breathing air. Always locate compressors and ambient air pumps where contaminated air will not enter the air intake.

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• Always use Clemco lenses with Clemco respirators; installing non-approved lenses voids the NIOSH approval. Respirator lenses are designed to protect the wearer from rebounding abrasive; they do not protect against flying objects, heavy high-speed materials, glare, liquids, or radiation.

INDUSTRY ORGANIZATIONS

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PREFACE

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BLAST MACHINES AND REMOTE CONTROLS

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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 no t equipped with properly functioning pressure relief valves.

OSHA regulation 1910.244(b) requires the use of remote controls on blast mach ines. 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 Nation al Bo ard approval and

may affect the dimensional integrity of the vessel.

 Moving the blast machine. Never manually move a blast machine contain ing abrasive, any machine containing

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abrasive must be moved with appropriate mechanical lifting equi pment.

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 ev ery conn ection 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

 Completely read and follow all service instructions and recommended maintenance intervals. Always shut off compressor and

depressurize blast machine before performing any maintenance. At every service interval, clean all filters, screens, and alarm systems. If spring-loaded abrasive valves are used, always cage spring before disassembly.

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 are to be free from defects in workmanship and materials for a

period of one year from date of shipment to buyer , but no warranty is made that the products are fit 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 sta ndard warranties of the manufacturers thereof, a copy of which shall be made available to the customer upon request.

4. The use 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 are delivered free of the rightful claim of any third party by way of patent infringement or the like.

6. This warrant y is conditioned upon seller’s receipt within ten (10) days after buyer’s discovery of a defect, of a written notice stating in what specific material respects the product failed to meet this warranty. If such notice is timely given, seller will, at its option, either modify the product or part to correct the defect, replace the product or part with complying products or parts, or refund the amount paid for the defective product, any one of which will constitute the sole liability of the seller and a full settlement of all claims. No allowance will be made for alterations or repairs made by other than those authorized by seller without prior written consent of seller. Buyer shall afford seller prompt and reasonable opportunity to inspect the products for which any claim is made as above stated.

Except as expressly set forth above, all warranties, express, implied or statutory, including implied warranty of merchantability, are hereby disclaimed.

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PREFACE

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DAILYSET‐ UP CHECKLIST

2. Breathing Air Compressor for High Pressure Respirators

or Ambient Air Pump for Low Pressure Respirators

4. External or Helmet Mounted Carbon Monoxide Monitor /Alarm

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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.

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1. PROPERLY-MAINTAINED AIR COMPRESSOR

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

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

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

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

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

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.

worn by blast operators, and other workers exposed to blast dust.

(bearing U or UM stamp, National Board Number, and

3. NIOSH Approved Supplied-Air Respirator

5. CPF Air Filter

sized to provide

(or oil-less ambient air pump)

installed at th e CPF filt e r or

sorbent bed filter) for

1. Air Compresso

12. Abrasive

11. Appropriately Sized Nozzle

9. Blast Hose

7. AIR LINE FILTER

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.

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8. REMOTE CONTROLS

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.

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9. BLAST HOSE

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.

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10. COUPLINGS AND NOZZLE HOLDERS

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.

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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.

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12. ABRASIVE

should be properly sized for the job. Check material safety data sheet for freesilica, cyanide, arsenic, lead and other toxins and avoid use when these toxic, harmful substances are present.

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SURFACE TO BE BLASTED

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

6. ASME Code t Machin

8. Remote ntrol

7. Air Line Moisture

arato

10. Hose Couplings and Safety Cables

(moisture separator) installed as close as possible to the

are required by OSHA and must be in perfect

should have an inside diameter sized to suit the blast nozzle.

should fit snugly on the hose and

must be a material specifically manufactured for blasting. It

should be examined for hazardous substances.

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[IV]

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 1

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, shortterm 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 indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.

CAUTION

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

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

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

1.6 Ancillary Equipment Requirements

1.6.1 In addition to the monitor, the following

equipment is required to operate and maintain the CMS4 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.

Calibration Cup

CMS-4 Monitor

Velcro®

Loop Tape

Velcro®

Hook Tape

Transparent

Mounting Strip

Tubing 3/16" x 2 Ft

0.5 LPM Slide Valve

Calibration

Connector

CLEMCO

25 ppm CO

Test Gas

LES

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.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 4

CMS-4 callouts shown are items needed to perform routine functions.

Cover Screw

Sensor Retainer

LED Alarm-Lens

Audible Alarm Opening

AIR Button

POWER/MODE Button

LCD Window

Sensor Retainer

CLEMCO

Hydrophobic Filter (white)

Charcoal Filter (black)

Sensor Gasket

Sensor Orientation Slots

Velcro® Loop Tape

Velcro® Hook Tape

Sensor

Mounting Clip

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

AIR

 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).

 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 IN-HELMET CARBON MONOXIDE MONITOR Page 5

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

Trim the Velcro

loop to CMS-4 mounting clip:

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 CMS-4 mounting clip, per Section 2.1.1.

loop to

3/4" x 1-1/4"

Velcro

Loop Strip

Back of Monitor

3/4" x 1-1/4"

Loop Strip

Mounting Clip

End View of Monitor

Mounting Clip

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.

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.

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 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

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 6

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.

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 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.

As seen from inside the hood, the strip is inserted into the groove in the window gasket. Attach Velcro the inside of the strip. Make sure the monitor’s LED lights are visible when the helmet is donned.

Figure 6

2.1.3.3 Remove backing from the Velcro

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.

hook tape to

loop to

hook tape

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.

ARNING

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).

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:

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 7

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.

LCD Window

Year

Battery Icon

2019

Date

8.03

Time

12:34

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.

Heart Symbol

Pulses, indicating the monitor is in normal operating status.

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.

LCD Window

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.

Time

Gas

ppm

12:34

Battery Icon

Heart Symbol

Pulses, indicating the monitor is in normal operating status.

Current Gas (CO) Concentration

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 8

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

ALARM TYPES AND INDICATIONS

ALARM TYPE VISUAL INDICATIONS OTHER ALARM INDICATIONS

WARNING

Concentration of CO rises above the Warning setting (10 ppm).

Alarm

Concentration of CO rises above alarm setting of 10 ppm.

Alarm H

Concentration of CO rises above the high alarm setting of 10 ppm.

TWA or STEL

Concentration of CO rises above the TWA or STEL alarm setting.

Over Range

An over range condition indicates an extreme CO concentration.

Low Battery Warning

Dead Battery Alarm

Sensor Failure

System Failure

Clock Failure

 Gas reading flashes.  Warning appears at the bottom of the LCD.  Alarm LEDs flash.  Backlight turns on.

 Gas reading flashes.  Alarm appears at the bottom of the LCD.  Alarm LEDs flash.

 Alternating high-low tone ‒

chirps about twice per second.

 Vibrator pulses once per second.

 Alternating high-low tone ‒

chirps about twice per second.

 Vibrator pulses once per second.

 Backlight turns on.

 Gas reading flashes.  Alarm H appears at the bottom of the LCD.  Alarm LEDs flash.

 Alternating high-low tone ‒

chirps about twice per second.

• Vibrator pulses once per second.

Backlight turns on.

 Gas reading flashes.

 TWA or STEL appears at the bottom of the

LCD.

 Alarm LEDs flash once per second.  Backlight turns on.

 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.

 The last bar in the battery icon disappears

and the battery icon starts flashing.



Alarm LEDs flash once per second.



Gas reading disappears.



FAIL appears in the middle of the screen

 Alternating high-low tone ‒

chirps about twice per second.

•

Vibrator pulses once per second.

 Alternating high-low tone ‒

chirps about twice per second.

 Vibrator pulses once per second.

 None.



Double pulsing beep occurring about once per second

and BATTERY appears at the bottom of the screen.



Alarm LEDs flash once per second

 FAIL appears in the middle of the screen and

SENSOR appears at the bottom of the

 Double pulsing beep occurring about

once per second.

screen.

 Alarm LEDs flash once per second.

 Gas reading replaced by FAIL.  Time replaced by SYS below FAIL.

• FAIL 050 CLOCK appears on the screen.

 Alarm LEDs flash once per second.

Figure 9

 Double pulsing beep occurring about

once per second.

 Double pulsing beep occurring about

once per second.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 10

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.

FAIL

050

CLOCK

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.

FAIL

031

SYSTEM

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 CMS4 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

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 11

any alarm indications. The monitor must be in measuring mode before it is placed in the respirator.

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.

LCD Window

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.

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.

Time

ARNING

Gas

Battery Icon

Heart Symbol

Pulses, indicating the monitor is in normal

ppm

12:34

operating status.

Current Gas (CO) Concentration

ARNING

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.

BUMP

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.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 12

SEQUENTIAL LIST OF USER MODE MENU ITEMS

Number of Times

POWER/MODE (beeps) is pressed and released to reach menu item.

ONE

TWO

THREE

FOUR

FIVE

SIX

SEVEN

EIGHT

NINE

TEN

ELEVEN

TWELVE

THIRTEEN

FOURTEEN

FIFTEEN

Figure 14

User Mode Menu Items Description Section in Which

Adjustments are Found

BUMP GAS CAL CAL SET

BUMP SET

ALARM-P

LUNCH

BEEP

BL TIME

KEY.TONE

DISP.SET

E-CAL

DATE PASS W

ROM/SUM

START

Perform bump test. Perform a calibration. Changes parameters related to calibration. Changes setting related to bump testing.

Set and alarm points.

Resets TWA and STEL readings at startup. Sets confirmation beep parameters.

How long backlight stays on.

Sets whether or not alarm beeps when button is pressed. Sets user ID, Station ID, and Alarm Volume.

A-CAL item appears in GAS CAL menu. E-CAL. Factory setting is OFF.

Sets the Date and Time. Refer to Section 2.3.

When set to ON, password required to enter User Mode. Shows firmware version and firmware checksum. Enters Measuring Mode from User Mode.

Refer to Section 5.6. Refer to Section 5.7. No adjustment required.

Do not adjust.

No adjustment required.

Do not adjust.

No adjustment required.

Do not adjust.

No adjustment required.

Do not adjust.

No adjustment required.

Do not adjust.

No adjustment required.

Do not adjust.

Factory setting is ON. Do not adjust. Factory setting is ON. Do not adjust. Factory setting is OFF. Do not adjust.

Factory setting is OFF. Do not adjust. Refer to Section 4.2.7 to display firmware. Press and release POWER/MODE.

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.

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

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.

SEQUENTIAL LIST OF DISPLAY MODE MENU ITEMS

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.

Number of times POWER/MODE (beeps) is pressed and released to reach menu item.

ONE

TWO

THREE

FOUR

FIVE

SIX

SEVEN

EIGHT HI (Alarm Beep Volume) Sets the buzzer volume. Factory set to

NINE Returns to measuring mode.

Figure 15

Display Mode Menu Items Description Sections In Which

Adjustments Are Found

PEAK

STEL

TWA

dISP (CAL DATA

LCD screen cycles

through CAL.DATA,

YES/AIR, and NO/MODE. DATE and TIME TEMP

dISP (ALARM-P

LCD screen cycles

through ALARM-P,

YES/AIR, and NO/MODE

Displays peak (highest) CO concentration since the monitor was last turned on.

Disp la ys short- term exposure limit. This reading is the average reading over the last 15 minutes. Displays time-weighted average over the last 8 hours.

Shows date of last calibration. Factory set to ON.

Displays Year, Date, and Time. Set per Section 2.3.

Displays ambient temperature in Celsius. Not adjustable.

View alarm setpoints. No adjustment required.

high.

No adjustment required. Do not adjust.

Do not adjust.

No adjustment required. Do not adjust.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 14

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.

ppm

The number shown in the illustration is for reference only. The number shown on the LCD screen will be the actual peak reading.

PEAK

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

HOL

RELEAS

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.

The number shown in the illustration is for

ppm

STEL

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.

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.

ARNING

reference only. The number shown on the LCD screen will be the average STEL reading over the last 15 minutes.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 15

4.4.2 Entering Maintenance Mode

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.

0 0 0 0

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 MDEF.

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.

PASS - W

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.

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.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 16

5.1 Calibration Schedule

5.1.1 Once the date and time are set, per Section 2.3,

the monitor displays a reminder that a bump test and/or calibration are due. Factory setting are:

 Bump test reminder is set for 30 days.  Calibration reminder is set for 90 days.

Initial Calibration Schedule: To become familiar with the operation and settings of the monitor the following initial schedule should be observed:

 Do a bump test daily for the first week of operation.

Refer to Section 5.6.

 Calibrate weekly for the first month of operation.

Refer to Section 5.7.

 Follow bump test and calibration reminder

schedules thereafter.

 Bump test before use if the monitor was out of

service for more than one week.

5.2 Performing Fresh-Air Adjustments

Fresh-air adjustments must be done in a fresh-air environment, free of toxic or combustible gases and with normal oxygen content (20.9%). The usual method is to set it in fresh ambient air. If fresh, ambient air cannot

be assured, set the fresh-air baseline with impurityfree (0 ppm) test gas, as described in Section 5.2.2.

5.2.1 Fresh-Air Adjustment with Ambient Air

5.2.1.1 Turn ON the CMS-4 by pressing and holding the

POWER/MODE button until the alarm beeps. Allow the monitor to finish its warm-up sequence.

5.2.1.2 Press and hold the AIR button. While pressing

the AIR button, the LCD displays HOLD, a prompt to

keep pressing the AIR button.

5.2.1.3 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 20.

LCD Window

Figure 20

Time

Gas

ppm

12:34

Battery Icon

Heart Symbol

Pulses, indicating the monitor is in normal operating status.

Current Gas (CO) Concentration

5.2.1.4 The monitor is now in Measuring Mode (normal operation). After an initial calibration per Section 5.7, the CMS-4 is ready for monitoring.

5.2.2 Fresh-Air Adjustment with Impurity-Free (0 ppm CO) Test Gas

The following is required to set the fresh-air baseline with impurity-free test gas:

 Impurity-free test gas, Stock No. 11132  Calibration connector with 0.5 LPM fixed-flow slide

valve, tubing, and calibration cup.

5.2.2.1 Make sure the monitor is off.

5.2.2.2 Prepare the calibration-connector regulator

valve and impurity-free test gas, per Section 5.3.

5.2.2.3 Turn ON the CMS-4 by pressing and holding the POWER/MODE button until the alarm beeps. Allow the monitor to finish its warm-up sequence.

5.2.2.4 Open the connector slide valve by sliding it to the OPEN position, away from the cylinder.

5.2.2.5 Press and hold the AIR button. While pressing

the AIR button, the LCD displays HOLD, a prompt to

keep pressing the AIR button.

5.2.2.6 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 20.

5.2.2.7 The monitor is now in Measuring Mode (normal operation). After an initial calibration per Section 5.7, the CMS-4 is ready for monitoring.

5.2.2.8 Close the connector slide valve by sliding it to the CLOSE position, toward the test gas cylinder.

5.2.2.9 Remove the calibration cup by gently prying the retaining clips off the monitor while lifting up on the cup. Refer to Section 5.5 for additional information on removing the calibration cup.

5.2.2.10 Unscrew the calibration connector with slide valve from the test gas cylinder. 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.

5.2.2.11 Refer to Section 5.8 for information on storing the calibration kit and test gas.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 17

5.3 Prepare Calibration-Connector Regulator Valve for Calibration ‒ Figure 21

5.3.1 The following materials are required to prepare

the calibration connector and test gas.

1. Calibration Test-Gas Cylinder (25 ppm CO)

Or Impurity-Free Air Cylinder (used when setting fresh-air baseline, per Section 5.2.2)

2. Calibration Connector with 0.5 LPM Fixed-Flow Slide Valve

3. Calibration Tubing

4. Calibration Cup

Flow arrow points away from calibration tubing.

5.3.5 Screw the calibration connector with slide valve onto the test gas cylinder. NOTE: Test gas can be 25 ppm CO used to calibrate the monitor, or it can be impurity-free air used to set fresh-air baseline when using impurity-free air, per Section 5.2.2.

5.4 Connect Calibration Cup to Monitor ‒ Figure 22

5.4.1 Prepare the calibration connector with slide

valve for calibration, per Section 5.3. Make sure the connector’s slide valve is closed.

5.4.2 Before attaching the calibration cup onto the monitor, make sure it is correctly positioned, as shown in Figure 22. The cup’s flow arrow must point up and to the left, as shown.

CMS-4 Monitor

Open End of Calibration Cup

Upper Retaining Clip

Calibration Cup

3/16" ID Tubing

Slide Valve

Calibration Connector with

Fixed-Flow Slide Valve

Test Gas Cylinder

OPEN

ESC

OPEN

Figure 21

5.3.2 Slide one end of the 3/16" clear tubing onto the barbed end of the calibration connector with slide valve.

5.3.3 Slide the other end of the 3/16" tubing onto the inlet barb of the calibration cup. NOTE: The calibration

cup (shaded in Figure 21) has directional flow. The flow-direction arrow shows the direction of air flow.

The tube connects to the barb on the backend of the flow arrow, as shown. The outlet barb (on the front end of the flow arrow) remains open.

5.3.4 Make sure the slide valve is CLOSED by sliding it toward the test gas cylinder, as shown in Figure 21.

CLEMCO

Lower Retaining Clip

Figure 22

3/16" ID Tubing

5.4.3 To attach the cup, refer to Figure 23 and hook the calibration cup’s lower retaining clip under the lower slot, as shown in Figure 23.

Calibration Cup

Lower Clip

Tubing

Clip Slot

View from sensor-end of monitor

Upper Clip

Sensor Retainer

Clip Slot

Figure 23

5.4.4 Gently press the other end of the cup onto the monitor until it snaps into place, as shown in Figure 24.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 18

Do not force it; if it does not easily snap into place, make sure the cup’s flow arrow points up and to the left of the monitor, as shown in Figure 22.

Upper clip inserted into clip slot.

Calibration cup correctly clipped onto the monitor.

Figure 24

5.4.5 Close the connector slide valve by sliding it to the CLOSE position, toward the test gas cylinder.

5.4.6 Remove the calibration cup by gently prying the retaining clips off the monitor while lifting up on the cup. Refer to Section 5.5 for additional information on removing the calibration cup.

5.5 Remove Calibration Cup from Monitor

5.5.1 Make sure the connector’s slide valve is closed

by sliding it to the CLOSE position, toward the test gas cylinder.

5.5.2 To remove the calibration cup from the monitor, gently pry the upper retaining clip off the monitor while lifting up on the cup, as shown in Figure 25.

Gently pry upper clip from clip slot and lift up to remove.

Figure 25

5.5.3 Unscrew the calibration connector from the test gas cylinder. 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.

5.5.4 Refer to Section 5.8 for information on storing the calibration kit and test gas.

5.6 Performing a Bump Test

A bump test is a fast way to determine if the monitor is calibrated within a few ppm of the test gas. If the bump test fails, a calibration is immediately and automatically started.

A bump test should be done in a fresh-air environment, as used to set the fresh-air baseline.

The following are required to bump test the CMS-4:

 Test gas with 25 ppm concentration of CO, Stock

No. 25573.

 Calibration connector with 0.5 LPM fixed-flow slide

valve, tubing, and calibration cup. Stock No. 29767, assembled, as noted in Section 5.3.

5.6.1 Make sure the fresh-air baseline was set per Section 5.2.

5.6.2 Prepare the calibration-connector regulator valve and 25 ppm CO test gas, per Section 5.3. Make sure the slide valve is closed.

5.6.3 With the monitor OFF, press and hold AIR and POWER MODE. Release both buttons when the monitor

beeps. BUMP is displayed on the LCD. The monitor is

now in User Mode.

5.6.4 Press and release POWER/MODE once. The calibration value (25 ppm) displays on the right side of the screen.

5.6.5 Connect the calibration cup to the front of the monitor over the sensor retainer. (The sensor retainer is located to the right of the LCD screen.) The calibration cup’s arrow must point up and to the left, as shown in Figures 21 and 22. Gently press the cup onto the monitor until it snaps into place. Refer to Section 5.4 for additional information on connecting the calibration cup to the monitor.

5.6.6 Open the connector slide valve by sliding it to the OPEN position (away from the cylinder). Refer to Figure 21.

5.6.7 Press and release POWER/MODE once. The gas reading will flash and the monitor will count down from 30 seconds in the lower-right corner. The bottom of

the screen will alternate between APLY and BUMP.

5.6.8 Once the countdown reaches zero, the bump test is performed.

5.6.9 If the bump test passes, the LCD will display P (passed) and BMP/CAL, as shown if Figure 26. Proceed to Section 5.6.11.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 19

CO P

ppm

BMP/CAL

Figure 26

5.6.10 If the bump test failed, a calibration is immediately and automatically started. Continue to apply the calibration gas. AUTO CAL will appear at the bottom of the screen, and a countdown will appear at the top.

5.6.11 Close the connector slide valve by sliding it to the CLOSE position, toward the test gas cylinder

5.6.12 Remove the calibration cup by gently prying the retaining clips off the monitor while lifting up on the cup. Refer to Section 5.5 for additional information on removing the calibration cup.

5.6.13 Press and release POWER/MODE; the

instrument displays END and then changes to BUMP.

The monitor is now in User Mode.

5.6.14 If any channel failed the calibration, the LEDs will flash and the alarm will sound a double-pulsing tone until POWER/MODE is pressed and released, which

returns the BUMP menu (User Mode). Refer to Section

7.0: Troubleshooting.

5.6.15 Press and release AIR 14 times (14 beeps) to

scroll to START.

5.6.16 Press and release POWER/MODE to start the warm-up sequence and return to Measuring Mode.

5.6.17 The bump test is complete.

5.6.18 Refer to Section 5.8 for additional information on

removing and storing the calibration connector and test gas.

5.7 Calibrating the CMS-4

Calibrate the monitor in a fresh-air environment, as when used to set the fresh-air baseline.

The following are required to calibrate the CMS-4:

 Test gas with 25 ppm concentration of CO, Stock

No. 25573.

 Calibration connector with 0.5 LPM fixed-flow slide

valve, tubing, and calibration cup Stock No. 29767, assembled, as noted in Section 5.3.

5.7.1 Make sure the fresh-air baseline was set per Section 5.2.

5.7.2 Prepare the calibration-connector regulator valve and 25 ppm CO test gas, per Section 5.3. Make sure the slide valve is closed.

5.7.3 With the monitor OFF, press and hold AIR and POWER MODE. Release both buttons when the monitor

beeps. BUMP is displayed on the LCD. The monitor is

now in User Mode.

5.7.4 Press and release AIR once (1 beep) to scroll to GAS CAL. Press POWER/MODE.

5.7.5 Press and release AIR once (1 beep) to scroll to

A-CAL. (NOTE: If E-CAL displays instead of A-CAL, the

monitor is in the incorrect mode. Refer to Section 4.4 Maintenance Mode to return to factory default settings.

5.7.6 Press POWER/MODE once (1 beep). The calibration value (25) displays on the right side of the screen.

5.7.7 Press POWER MODE again. The gas reading will start to flash.

5.7.8 Connect the calibration cup to the front of the monitor over the sensor retainer. (The sensor retainer is located to the right of the LCD screen.) The calibration cup’s flow arrow must point up and to the left, as shown in Figures 21 and 22. Gently press the cup onto the monitor until it snaps into place. Refer to Section 5.4 for additional information on connecting the calibration cup to the monitor.

5.7.9 Open the connector slide valve by sliding it to the OPEN position (away from the cylinder). Refer to Figure 21.

5.7.10 Allow gas to flow for one minute.

5.7.11 Press and release POWER MODE once. The

monitor begins calibration.

5.7.12 If the calibration was successful, the LCD will

briefly display PASS and the monitor returns to the A-

CAL menu.

5.7.13 If the calibration failed, the LCD will display

FAIL, the LEDs will flash, and the alarm will sound.

Press and release POWER/MODE to clear the failure.

The monitor returns to the A-CAL menu. Refer to Section 7.0: Troubleshooting.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 20

5.7.14 Close the connector slide valve by sliding it to the CLOSE position, toward the test gas cylinder.

5.7.15 Remove the calibration cup by gently prying the retaining clips off the monitor while lifting up on the cup. Refer to Section 5.5 for additional information on removing the calibration cup.

5.7.16 Press AIR once (1 beep) to scroll to ESCAPE.

5.7.17 Press and release POWER MODE to return to

User Mode. Check to see if the monitor returns to Measuring Mode if no buttons are pushed after 20 seconds.

5.7.18 Press and release AIR 13 times (13 beeps) to

scroll to START.

5.7.19 Press POWER/MODE once to start the warm-up sequence and return to Measuring Mode.

5.7.20 The calibration is complete.

5.7.21 Refer to Section 5.8 for information on storing

the calibration kit and test gas.

5.8 Storing the Calibration Kit and Test Gas

5.8.1 Remove the calibration cup from the monitor,

per Section 5.5.

5.8.2 Unscrew the calibration connector with slide valve from the test gas cylinder. 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.

5.8.3 Place the calibration kit and test gas in a plastic bag or other sealed container, and store it in a clean, dry place.

6.0 MAINTENANCE

ARNING

Regularly scheduled calibration and maintenance is essential for proper operation and accurate readings of the monitor. Maintenance should be performed by personnel properly trained for this work. Improper service could result in malfunction and loss of life.

NOTE: There are no serviceable parts within the CMS-4 case. Do not remove the four screws holding the upper and lower case together or try to separate the case.

6.1 Replacing the Lithium Battery ‒ Figures 27 and 28

The battery icon has three bars visible when the battery has full power. As the battery charge decreases, the bars disappear. Obtain a replacement CR2450 3V Lithium coin battery when there is one bar remaining on the battery icon. Replace the battery when the lowest battery level indication bar disappears and the battery icon begins to flash, indicating that the monitor is in low battery warning

6.1.1 Make sure the monitor is turned OFF.

6.1.2 From the back of the monitor, pry the mounting

clip off the spring pin and swing it away from the battery cover, as shown in Figure 27.

6.1.3 Use a small Phillips screwdriver to unscrew the battery cover’s screw and swing the cover away from the monitor to remove it.

Cover Screw

Mounting Clip

Figure 27

6.1.4 Carefully remove the old battery.

6.1.5 Carefully install the new battery, noting the

polarity indications on the underside of the battery cover and in the battery compartment. The negative (-) side of the battery goes into the monitor, as shown in Figure 28.

6.1.6 Reinstall the battery cover and screw.

NOTE: If the instrument has been without a battery for

more than 5 minutes, the date and time are reset and need to be set again. When the new battery is installed, the instrument will turn on automatically and will display

Spring Pin

Battery Cover Shown shaded.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 21

the Date/Time Screen. Reset the date and time, as

described in Section 2.3: Setting the Date and Time.

Once the date and time have been set, the instrument will begin its warm-up sequence. If the date and time are not set within 30 seconds, the instrument will automatically begin its warm-up sequence.

Battery Cover

Cover Screw

CR2450 Battery

Positive (+) toward cover.

Sensor Retainer Screw

Sensor Retainer

Hydrophobic Filter

(white)

Sensor Gasket

Sensor

Retainer Tab

Charcoal Filter (black)

Sensor Orientation Slots (2)

Batter-Cover

Screw Port

U-Seal Gasket

Back View of CMS-4

with battery cover removed.

Figure 28

6.2 Replacing the Sensor ‒ Figures 29 and 30

NOTE: Replace the sensor in a clean, nonhazardous environment. Make sure a new hydrophobic filter and charcoal filter are available before changing the sensor.

6.2.1 Make sure the monitor is turned OFF.

6.2.2 Use a small Phillips screwdriver to unscrew the

sensor-retainer’s screw.

6.2.3 Remove the sensor retainer.

6.2.4 Remove the sensor gasket and filters. The filters

may fall out. The sensor will be exposed.

6.2.5 Remove the old sensor by pulling it straight up from the sensor socket. NOTE: The bottom of the

sensor is slotted and can only be inserted in the socket one way, as shown in Figure 29. Before removing the sensor, note the orientation of the old sensor alignment points, as shown in Figure 30. The new sensor will insert with the same orientation.

Figure 29

NOTICE

Do not force the sensor into the socket; when correctly oriented, the sensor easily fits into the socket. Forcing it could damage the sensor or the socket.

6.2.6 Carefully insert the replacement sensor. Make

sure the sensor face with the colored ring is facing up, and that the sensor’s orientation slots are aligned correctly with the tabs within the socket, as shown in Figure 30. Do not force the sensor into its socket; if the sensor is correctly aligned, it easily sets into the socket.

Sensor Orientation Slots

Figure 30

6.2.7 Place the wide side of the sensor gasket over

the sensor and push it into the recess, as shown in Figure 31.

Alignment points

shows location of

orientation slots.

Top View of Sensor

Bottom View of Sensor

(mirrored)

Sensor Orientation Tabs

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 22

6.2.8 Install a new charcoal filter. It should be seated

and recessed in the center of the sensor gasket.

6.2.9 Install a new white hydrophobic filter. It should be seated and recessed in the sensor gasket and should not overlap the edge of the sensor gasket.

6.2.10 Clip the sensor retainer over the filters and sensor gasket and tighten its screw.

6.2.11 Calibrate the new sensor, as described in

Section 5.7: Calibrating the CMS-4.

6.3 Replacing the Charcoal Filter ‒ Figure 31

NOTE: Replace the charcoal filter in a clean, nonhazardous environment.

6.3.1 Make sure the monitor is turned OFF.

6.3.2 Use a small Phillips screwdriver to unscrew the

sensor-retainer screw.

6.3.3 Remove the sensor retainer.

6.3.4 The white hydrophobic filter and the sensor

gasket should stay on the sensor.

Sensor-Retainer Screw

6.3.9 Clip the sensor retainer over the filters and sensor gasket, and tighten its screw.

6.4 Replacing the Hydrophobic Filter ‒ Figure 32

NOTE: Replace the hydrophobic filter in a clean, nonhazardous environment. Replace the charcoal filter when replacing the hydrophobic filter.

6.4.1 Make sure the monitor is turned OFF.

6.4.2 Use a small Phillips screwdriver to unscrew the

sensor-retainer screw.

6.4.3 Remove the sensor retainer.

6.4.4 The white hydrophobic filter and the sensor

gasket should stay on the sensor.

6.4.5 Remove the old hydrophobic filter.

6.4.6 Remove the old black charcoal filter from the

center of the sensor gasket. We recommend changing the charcoal filter when changing the hydrophobic filter.

Sensor-Retainer Screw

Sensor Retainer

Hydrophobic Filter (white)

Charcoal Filter (black)

Sensor Gasket

Figure 31

6.3.5 Remove the white hydrophobic filter.

6.3.6 Remove the old black charcoal filter from the

center of the sensor gasket.

6.3.7 Install the new charcoal filter. It should be seated and recessed in the center of the sensor gasket.

6.3.8 Reinstall the white hydrophobic filter. It should be seated and recessed in the sensor gasket and should not overlap the edge of the sensor gasket.

Hydrophobic Filter (white)

Sensor Gasket with Charcoal Filter

Figure 32

6.4.7 Install the new charcoal filter. It should be seated and recessed in the center of the sensor gasket.

6.4.8 Install the new hydrophobic filter. It should be seated and recessed in the sensor gasket and should not overlap the edge of the sensor gasket.

6.4.9 Clip the sensor retainer over the filters and sensor gasket, and tighten its screw.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 23

7.0 TROUBLESHOOTING

The troubleshooting table describes error messages, symptoms, probable causes, and recommended action for problems encountered with the CMS-4.

Symptoms Probable Causes Recommended Action

NOTE: If the monitor does not display menu items that are noted within these instructions, repeat the process. If after repeating the process the monitor still does not display the correct menu item, return the monitor to factory settings, per Section 4.4.

The LCD is blank. The monitor may have been turned

off.

The battery was inserted backwards.

Battery may need to be replaced.

The battery cover may not be completely closed.

The LCD shows an abnormally high reading, but other gas detection instruments do not.

Calibration fails.

Charcoal filter may need to be replaced.

The CMS-4 may need to be recalibrated.

The sensor may need replacement.

The calibration gas values may not match the cylinder gas concentration.

1. To turn on the monitor, press and briefly hold

POWER/MODE.

1. Reinstall the battery in the correct orientation.

1. Check battery ICON for remaining battery life.

1. Be sure the battery cover is completely closed and that the screw is tight.

2. If the difficulties continue, contact the Clemco distributor the monitor was purchased through for further instruction.

1. Replace the charcoal filter.

1. Recalibrate the

2. If the difficulties continue, replace the sensor and calibrate.

1. Recalibrate the monitor.

2. If the difficulties continue, replace the sensor and calibrate.

1. Make sure test gas and gas value are 25 ppm. Refer to Sections 5.6 and 5.7

2. Make sure the CMS-4 has been properly set up for calibration.

3. If the fail condition continues, replace the sensor.

4. If difficulties continue, contact the Clemco distributor the monitor was purchased through for further instruction.

monitor.

Heart symbol at the top of the screen becomes steadily on or disappears.

Monitor does not display menu items as noted within the instructions.

The sample gas is not reaching the sensor because of a bad connection.

The calibration cylinder may be out of gas or is outdated.

The sensor may need replacement. 1. If the fail condition continues, replace the sensor.

A microprocessor error has occurred.

Factory settings accidentally changed.

1. Check all calibration tubing for leaks or for any bad connections.

1. Verify that the calibration cylinder contains an adequate supply of fresh test sample.

2. If difficulties continue, contact the Clemco distributor the monitor was purchased through for further instruction.

1. Contact the Clemco distributor the monitor was purchased through for further instruction.

1. Return to factory default settings per Section 4.4.

CMS-4 IN-HELMET CARBON MONOXIDE MONITOR Page 24

8.0 REPLACEMENT PARTS

8.1 System Replacement Parts, Figure 33

Item Description Stock No.

(-) CMS-4 CO Monitor Package

Includes items shown with asterisk (*) .... 29765

1. * CMS-4 CO monitor, instrument only .......... 29766

2. * Calibration kit .............................................. 29767

3. Test gas,

* 25 ppm CO .............................................. 25573

Impurity-free ............................................ 11132

4. Calibration connector with

0.5 LPM fixed-flow slide valve ................. 25572

5. Calibration cup ........................................... 29764

6. Tubing, 3/16 ID, 2-feet required ................. 13074

7. * Velcro

tape, loop side

Included with kit 29870, shown in Figure 34

8. * Velcro

tape, hook side

Included with kit 29870, shown in Figure 34

9. * Mounting strip assembly used with Apollo 60 and 600 only Included with kit 29870, shown in Figure 34.

CLEMCO

OPEN

LES

8.2 Monitor Replacement Parts ‒ Figure 34

NOTE: There are no serviceable parts within the CMS-4 case. Do not remove the four screws holding the upper and lower case together or try to separate the case.

Item Description Stock No.

1. * Sensor, CMS-4 ........................................... 29768

2. Retainer, sensor ......................................... 29769

3. Retainer, battery ......................................... 29770

4. Gasket, sensor .......................................... 29771

5. Gasket, battery retainer ............................. 29772

6. * Filter, hydrophobic, each .......................... 29868

7. * Filter, charcoal, pack of 5 .......................... 25564

8. Mounting clip ............................................. 29869

9. Battery, 3V Lithium coin ............................. 24619

or purchase model CR2450 locally

10. Service kit, includes items 10a thru 10e .... 29870

10a Screw set (2), sensor and battery retainers 10b Velcro 10c Velcro

tape, loop side, 1" x 1-1/4"

tape, hook side, 1" x 2" (qty. of 2 10d Mounting strip, transparent (qty. of 2) 10e Spring pin (qty. of 2)

* Make sure a new hydrophobic filter (Item 6) and charcoal filter (Item 7) are available so they can be replaced when changing the sensor (Item 1).

10a

10c

10e

10a

6 7

10b

10d

Figure 33

Figure 34

Clemco CMS-4 Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual