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Installation & Operation Manual                                                                         Merlin Gas Detector 

 

 

Rev: 18   03-20

 

7  

 

OPERATION 

   First Power Up 

 

On connecting power, the detector enters ‘sensor stabilisation’ phase for approximately 60 

seconds – during this period the device is not yet ready for gas detection. 
 

 

Power

  

Detector is powered when green LED is on. 

 

Low (Attention!) 
When the detector has reached a low level alarm – 
the LED will illuminate amber.  

 

High

 

(Danger!)

 

When a high concentration of gas is detected, the alarm will sound and LED will 
illuminate Red

.

 

 

 

High (Flashing & alarm beeping). 

There is a fault – contact your supplier.  

 

 

 

   Service & Maintenance 

 

 
Keep your detector in good working order follow these basic principles; 
 

 

DO carefully remove any accumulated dust from the outer enclosure once a month. 

 

NEVER use detergents or solvents to clean your device – this may permenantly or 
temporarily damage the gas sensing elements. 

 

NEVER spray air fresheners, hair spray, paint or other aerosols near the device. 

 

NEVER paint the device. Paint will seal vents and interfere with the device. 

 

 

At dangerous gas levels, the alarm will continuously sound if the buzzer dip-switch is ON. 

There are no provisions to silence this alarm.  

Only when gas levels are at a safe level will the audible alarm stop. 

 

 

High concentrations of alcohol found in many products may damage, deteriorate or affect 

the gas sensing elements – such as; wine; deodorants; stain removers; thinners etc. 

 

 

It is recommended that detectors are inspected and serviced at least annually from the date 

of installation for optimum performance and protection due to sensitivity drifts.   

Summary of Contents for Merlin CO Detector

Page 1: ...we supply a full range of remote gas detectors including carbon monoxide CO natural gas NG and liquid petroleum gas LPG that are compatible with our range of Merlin control panels The information con...

Page 2: ...tion and Positioning 3 Fixing 4 Board Overview 4 Wiring the Detector 5 Audible Alarm Switch 5 Testing the system 5 Trouble Shooting 6 Specification 6 OPERATION 7 First Power Up 7 Service Maintenance 7...

Page 3: ...Positioning Locations for detectors will vary based on the intended application and target gas they should be located near identified sources of a potential gas leaks pockets where hazardous gas could...

Page 4: ...the wall surface is flat to prevent base distortion 3 There is a pre fractured area for cable entry provided on the inside of the rear cover which may be cut away as required 4 After executing the mo...

Page 5: ...ms etc Audible Alarm Switch There is a switch on the Detector circuit board The user can choose whether to have an audible alarm when dangerous gas levels are detected The alarm will continuously soun...

Page 6: ...put 0 5A Switching Current resistive load Consumption 90mA Max 24V Accuracy 25 C 77 F 10 Fuses N A Operating Temp 0 50 C 30 85 RH Non Condensing Test Conditions 25 5 C 77 41 F Audible Alarm Buzzer dB...

Page 7: ...any accumulated dust from the outer enclosure once a month NEVER use detergents or solvents to clean your device this may permenantly or temporarily damage the gas sensing elements NEVER spray air fre...

Page 8: ...sually appear in good order but its sensitivity can be inhibited by external factors Dust humidity temperature fluctuations cleaning products contaminants or sensor drift ageing can cause a decline in...

Page 9: ...Installation Operation Manual Merlin Gas Detector Rev 18 03 20 9 NOTES...

Page 10: ...Installation Operation Manual Merlin Gas Detector Rev 18 03 20 10 NOTES...

Page 11: ...nty coverage The manufacturer warrants to the original consumer purchaser that this product will be free of defects in material and workmanship for a period of three 3 years from date of purchase or o...

Page 12: ...anisation Stamp Signature of the installer Replacement Date For all correspondence S S Northern Head Office Tel 44 0 1257 470 983 Fax 44 0 1257 471 937 www snsnorthern com info snsnorthern com South E...

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