Macurco™ Carbon Monoxide Detector, Controller and Transducer CM-6 User Instructions Important: Keep these User Instructions for reference 1
TABLE OF CONTENTS GENERAL SAFETY INFORMATION Intended Use List of Warnings and Cautions USE INSTRUCTIONS AND LIMITATIONS Use For Do Not Use For General Description Features Specifications INSTALLATION AND OPERATING INSTRUCTIONS General Information Location Installation Garage diagram 4-20 mA Output diagram Multiple Device diagram DVP-120 Control Panel diagram Alarm Control Panel diagram Power Up Operation Default Configuration Changing Settings Default Settings Display setting Power Up Test setting Buzzer s
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.
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.
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.
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.
Power Up The CM-6 steps through an internal self-test cycle for the first 1 minute that it is powered. The unit will execute the test cycle any time power is dropped and reapplied (i.e. power failure). During the self-test cycle the unit will display the Firmware Version number, then count down from 60 to 0 and finally go into normal operation. The Fan and Alarm relay will be activated for the power-up cycle unless the “Power Up Test” (PUt) option is OFF.
Operation 1. With the display function turned “On”, the CM-6 will show the current concentration of CO ppm or “0” (zero) in clean air. When the CO concentration reaches the Fan Relay setting (35 ppm, for example) the display will flash back and forth between “FAn” and “35”. With the display function turned ”Off”, the display does not show the CO concentration, but will show “FAn” as long as the fan relay is activated. 2.
the second selection “PUt” or Power Up Test setting. Push Enter. If the testis “On” push Next to turn it “OFF” (flashing) then push Enter to confirm the change (solid) and push Enter again to return to “PUt” in the Con menu. Push Next until “End” is displayed then push Enter to get back to normal operation. Selecting Display Option – “dSP” To select the Display Configuration, in normal mode, push the Next button to get to “Con” or the Configuration menu. Then push the Enter button to enter the Con menu.
Selecting Fan Relay Runtime – “Frr” To select the Fan Minimum Runtime setting, in normal mode, push the Next button to get to “Con” or the Configuration menu. Then push the Enter button to enter the Con menu. The ninth selection is the “Frr” or Fan Minimum Run Time. Push Next seven times to get to “Frr” then Enter.
are to be performed at the appropriate Macurco manufacturing facility. Macurco does not sanction any thirdparty repair facilities. ! WARNING 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 intrinsic safety, which may adversely affect product performance and result in sickness or death. CAUTION Avoid the use of harsh cleaning materials, abrasives and other organic solvents.
d. The 4-20mA output will then ramp up from 4 to 20 mA over the next 130 seconds of the test, so if the circuit is wired in the normal manner, the control panel or building automation system should respond. e. At the end of the test cycle, the light will turn green and be on steady (Normal Operation), the fan & alarm relay will be in standby mode and the 4-20 mA output will return to 4 mA (in clean air). 8. When testing is completed reassemble the unit or units.
Gas Testing Testing the Fan Relay 1. Remove the Philips screw on the front of the CM-6. Remove the front cover. 2. Open the FCK. Connect the 50 ppm gas cylinder to the regulator. 3. Check the pressure gauge on the regulator. If you have 25-psi or less you will need to replace the gas canister. 4. Assemble regulator, hose and Test Hood and place the Test Hood over the CO sensor. Note: The time to activate the Fan relay depends on the delay setting. 5.
d. Detector has Alarm relay set to disable (OFF). Set Alarm relay to 100 ppm and repeat the test. 6. Remove the gas from the sensor after Test. Proceed to Test the 4-20mA output or replace the top cover. Testing the 4-20mA current loop 1. 2. 3. 4. 5. 6. Connect the 200 ppm cylinder of carbon monoxide to the regulator. Check the pressure gauge. If there is 25-psi or less the cylinder should be replaced. Place the cap from the regulator over the CO sensor. Turn on the regulator to start the gas flow.
FIELD CALIBRATION PROCEDURE Note: For optimum calibration results the unit should be in clean air and be in a low ambient air flow. 1. Remove the Philips screw on the front of the CM-6. Pull the front cover of the unit off. 2. Assemble the 200 ppm gas cylinder and regulator together. 3. Check the pressure gauge on the regulator. If you have 25-psi or less you will need to replace the gas canister. 4. Place the test Hood from the regulator over the CO sensor. 5.
