Macurco CM-6 User Manual
Macurco™ CM-6
Carbon Monoxide Detector, Controller and Transducer
User Instructions
Important: Keep these User Instructions for reference
TABLE OF CONTENTS
GENERAL SAFETY INFORMATION 3
List of Warnings and Cautions 3
USE INSTRUCTIONS AND LIMITATIONS 4
Use For 4
Do Not Use For 4
General Description 4
INSTALLATION AND OPERATING INSTRUCTIONS 5
MAINTENANCE 14
End-of-Life Signal 14
Testing 15
MACURCO GAS DETECTION PRODUCTS WARRANTY 20
Intended Use 3
Features 5
Specifications 5
Location 6
Installation 6
Power Up 10
Operation 10
Default - Factory Settings 10
On Board Diagnostics 13
Sensor Poisons 14
Sensor Life Reset 14
Cleaning 15
Field Calibration Procedure 19
Garage diagram 7
4-20 mA Output diagram 7
Multiple Device diagram 8
Alarm Control Panel diagram 8
DVP-120 Control Panel diagram 9
Alternate Alarm Panel 10
Display setting 11
Buzzer setting 12
Alarm Relay setting 12
Alarm Relay Configuration 12
Fan Relay setting 12
Fan Relay Delay setting 12
Fan Minimum Runtime setting 13
Fan Relay Latching setting 13
Trouble Fan Setting 13
4-20mA Output setting 13
Operation Test 15
Manual Operation Test 16
Carbon Monoxide Gas Test 17
Aerosol Carbon Monoxide Test 19
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GENERAL SAFETY INFORMATION
Intended Use
The Macurco CM-6 is a low voltage, dual relay Carbon Monoxide (CO) detector, controller and transducer. The CM-6 has selectable
4-20 mA output, buzzer and digital display options. It is an electronic detection system used to measure the concentration of Carbon
Monoxide and provide feedback and automatic exhaust fan control to help reduce CO concentrations in parking garages, maintenance
facilities or other commercial applications. The CM-6 is a low level meter capable of displaying from 0-200 ppm (parts per million) of
Carbon monoxide. The CM-6 is factory calibrated and 100% tested for proper operation, but can also be calibrated in the field.
List of Warnings and Cautions within these User Instructions
! WARNING
Each person using this equipment must read and understand the information in these User Instructions before use. Use of this
equipment by untrained or unqualified persons, or use that is not in accordance with these User Instructions, may adversely affect
product performance and result in sickness or death.
Use only for monitoring the gas which the sensor and instrument are designed to monitor. Failure to do so may result in exposures
to gases not detectable and cause sickness or death. For proper use, see supervisor or User Instructions, or call Technical
Service at 1-877-367-7891.
This equipment may not function effectively below 0F or above 125F (-18C or above 52C). Using the detector outside of this
temperature range may adversely affect product performance and result in sickness or death.
This detector helps monitor for the presence and concentration level of a certain specified airborne gas. Misuse may produce an
inaccurate reading, which means that higher levels of the gas being monitored may be present and could result in overexposure
and cause sickness or death. For proper use, see supervisor or User Instructions, or call Technical Service at 1-877-367-7891.
High voltage relay terminals (120/240 VAC) are located within this detector, presenting a hazard to service technicians. Only
qualified technicians should open the detector case and service the internal circuits. Ensure power is removed from the detector
relays prior to servicing the unit. Failure to do so may result in sickness or death.
Do not disassemble unit or attempt to repair or modify any component of this instrument. This instrument contains no user
serviceable parts, and substitution of components may impair product performance and result in sickness or death.
Using a certified gas with a concentration other than the one listed for this detector when conducting a calibration or calibration
verification test (bump test) will produce inaccurate readings. This means that higher levels of the gas being monitored may be
present and could result in overexposure and cause sickness or death. For proper use, see supervisor or User Instructions, or
call Technical Service at 1-877-367-7891
The following steps must be performed when conducting a calibration or calibration verification test (bump test) to ensure proper
performance of the monitor. Failure to do so may adversely affect product performance and result in sickness or death.
When performing a calibration or calibration verification test (bump test) only use certified calibration gas at the
required concentration level. Do not calibrate with expired calibration gas.
If the instrument cannot be calibrated, do not use until the reason can be determined and corrected.
Do not cover or obstruct display or visual alarm cover.
Ensure sensor inlets are unobstructed and is free of debris
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USE INSTRUCTIONS AND LIMITATIONS
! WARNING
Each person using this equipment must read and understand the information in these User Instructions before use. Use of this
equipment by untrained or unqualified persons, or use that is not in accordance with these User Instructions, may adversely affect
product performance and result in sickness or death.
Use For
The CM-6 provides CO detection and automatic exhaust fan control for automotive main tenance facilities, enclosed parking garage s,
utility rooms, warehouses and other commercial applications. The CM-6 meets the requirements of the Uniform Building Code for
enclosed garages and meets OSHA standards for CO exposure. CM-6 can be used stand alone, with the Macurco DVP-120 Detection
and Ventilation Control Panel, other 12 VAC or 24 VDC fire/security panels or building automation systems.
! WARNING
Use only for monitoring the gas which the sensor and instrument are designed to monitor. Failure to do so may result in exposures to
gases not detectable and cause sickness or death. For proper use, see supervisor or User Instructions, or call Technical Service at 1877-367-7891.
Do Not Use For
The CM-6 is not intended for use in hazardous locations or industrial applications such as refineries, chemical plants, etc. Do not mount
the CM-6 where the normal ambient temperature is below 0°F or exceeds 125°F (-18C or above 52C). The CM-6 mounts on a type
4S electrical box supplied by the contractor. Do not install the CM-6 inside another box unless it has good air flow through it.
! WARNING
This equipment may not function effectively below 0F or above 125F (-18C or above 52C). Using the detector outside of this
temperature range may adversely affect product performance and result in sickness or death.
General Description
The CM-6 is a low voltage, dual relay Carbon Monoxide (CO) detector and automatic ventilation controller. The CM-6 uses a
microcomputer controlled, electronic system to measure the concentration of CO, actuate relays and provide a 4-20 mA output. The
CM-6 has a low maintenance long life (7+ years) electrochemical sensor and optional gas test and calibration kits. The CM-6 is a low
level meter capable of displaying from 0-200 ppm of carbon monoxide.
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Features
ETL LISTED Certified to CAN/CSA Std. C22.2 No 61010-1 Conforms to UL Std. 61010-1
Low level meter capable of displaying from 0-200 ppm of CO
The CM-6 meets the Uniform Building Code for enclosed garages and meets OSHA standards for CO exposure
Selectable fan and alarm relay activation
5 A SPDT fan relay controls starters of exhaust fans
0.5 A N.O. or N.C. alarm relay connects to warning devices or control panels
4-20 mA Current Loop
CM-6 mounts on a standard 4x4 electrical box and becomes cover for the box
Supervised system: any internal detector problem will cause the fan & Alarm relay to activate
Calibration kit is available. One screw allows access for calibration or gas test
Specifications
Power: 3 W (max) from 12 to 24 VAC or 12 to 32 VDC
Current @ 24 VDC: 75 mA in alarm (two relays), 50 mA (fan relay only) and 23 mA stand by
Shipping Weight: 1 pound (0.45 kg)
Size: 4 1/2 x 4 x 2 1/8 in. (11.4 X 11.4 X 5.3 cm)
Color: Dark gray
Connections: plugs/terminals
Mounting box: (not included) 4x4 electric
Fan relay: 5 A, 240 VAC, pilot duty, SPDT, latching or non-latching
Fan relay actuation: selectable at diS (disable), 15 ppm, 25 ppm, 35 ppm (default), 50 ppm or 100 ppm CO
Fan Delay Settings of 0, 1, 3 (default), 5 and 10 minutes
Fan Minimum Runtime settings are 0 (default), 3, 5, 10 or 15 minutes
Fan relay latching or not latching (default) selectable
Alarm relay: 0.5A 120 V, 60 VA
Alarm relay actuation: selectable N.O. default or N.C.
Alarm relay settings: diS, 50 ppm, 100 ppm, 150 ppm and 200 ppm (default)
Current Loop, 4-20 mA for 0-200 ppm CO, selectable to off or on (default)
Buzzer: 85 dBA at 10cm settable to off (default) or on
Digital display: 3 digit LED selectable to off (default) or on.
Operating Environ: 0°F to 125° F (-18C to 52C).10 to 90% RH
INSTALLATION AND OPERATING INSTRUCTIONS
The following instructions are intended to serve as a guideline for the use of the Macurco CM-6 Carbon Monoxide Detector. It is not to
be considered all-inclusive, nor is it intended to replace the po licy and procedures for each facility. If you have any do ubts about the
applicability of the equipment to your situation, consult an industrial hygienist or call Technical Service at 1-877-367-7891.
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! WARNING
This detector helps monitor for the presence and concentration level of a certain specified airborne gas. Misuse may produce an
inaccurate reading, which means that higher levels of the gas being monitored may be present and could result in overexposure and
cause sickness or death. For proper use, see supervisor or User Instructions, or call Technical Service at 1-877-367-7891.
Location
A CM-6 is normally mounted at breathing level, about 5 feet (1.5 meters) above the floor on a wall or column in a central area where air
movement is generally good. The unit, on average, can cover about 5,000 sq. ft. (465 sq. meters). The coverage depends on air
movement within the room or facility. Extra detectors may be needed near any areas wh ere people work or where the air is stagnant.
Do NOT mount the CM-6 where the normal ambient temperature is below below 0°F or exceeds 125°F (below -18C or above 52C).
! WARNING
High voltage relay terminals (120/240 VAC) are located within this detector, presenting a hazard to service technicians. Only qualified
technicians should open the detector case and service the internal circuits. Ensure power is removed from the detector relays prior to
servicing the unit. Failure to do so may result in sickness or death.
Installation
1. The CM-6 mounts on a 4” square (or 4x4) electrical box supplied by the contractor. Do not mount the CM-6 inside another box,
unless it has good air flow through it.
2. Connect the CM-6 to Class 2 power supply only. It is suggested to use a separate transformer for powering the unit or units
because of possible interference’s from other devices on the same power supply.
3. Connect the CM-6 to the control cables with terminal plugs. When making connections, make sure the power is off.
4. There are two terminals for Power: 12 to 24 VAC or 12 to 32 VDC, with no polarity preference.
5. There are two terminals for the dry alarm relay contacts, again with no polarity preference. The alarm relay can switch up to 0.5
A 120 V, or 60 VA. The alarm relay is activated if gas reaches or exceeds the alarm settings. See OPERATION section of
these User Instructions for details on relay settings.
6. The alarm relay can be configured to normally open (default) (N.O.) or normally closed (N.C.) and will activate if the gas
concentration exceeds alarm set point. It will deactivate once the gas concentration drops below the alarm set point. Note that
the “disable” setting will cause the alarm relay not to engage at all.
7. The dry contact, SPDT fan relay has three terminals. The common (COM.), normally open (N.O.) and the normally closed
(N.C.) contact. The fan relay can switch up to 5.0 A up to 240 VAC. See OPERATION section of these User Instructions for
details on relay settings.
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