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New Cosmos Electric KS-7D Instruction Manual

Carbon monoxide detector
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Carbon Monoxide Detector
Instruction Manual
•
Keep this Instruction Manual available for quick reference when needed.
•
Read this Instruction Manual and understand the information thoroughly before using.
•
This Instruction Manual describes the standard specification. For the users' specification,
see the separate delivery specifications.
KS-7D
Model
Instruction Manual No.
GAE-053-00
July 2014

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Summary of Contents for New Cosmos Electric KS-7D

  • Page 1 Carbon Monoxide Detector KS-7D Model Instruction Manual • Keep this Instruction Manual available for quick reference when needed. • Read this Instruction Manual and understand the information thoroughly before using. • This Instruction Manual describes the standard specification. For the users’ specification, see the separate delivery specifications.

  • Page 2: Table Of Contents

    Table of Contents 1. Introduction..........................1 2. Safe Operation ..........................2 3. Contents in the Package and Options..................2 3. Contents in the Package and Options..................3 4. Dimensions, Part Names and Functions ...................4 4-1. External Dimensions, Part Names and Functions .............4 4-2. Part Names and Functions ....................5 5.

  • Page 3: Introduction

    1. Introduction Thank you for purchasing the KS-7D Carbon Monoxide Detector. The KS-7D Carbon Monoxide Detector detects the leakage of carbon monoxide, which is toxic and combustible gas, in indoor office, laboratories, clean room, etc. in non-hazardous area. It displays the gas concentration and outputs as an analog signal to the external device.

  • Page 4: Safe Operation

    2. Safe Operation Read the following instructions thoroughly for proper operation. Ensure to install and operate the Carbon Monoxide Detector in accordance with applicable laws and regulations.. WARNING ▪ If the gas alarm is activated, take all necessary precautions immediately. ▪...

  • Page 5: Contents In The Package And Options

    3. Contents in the Package and Options The following items are enclosed with the KS-7D Carbon Monoxide Detector. Carefully check that all items listed below are included before use. If any items are broken or missing, contact your New Cosmos representative.

  • Page 6: Dimensions, Part Names And Functions

    4. Dimensions, Part Names and Functions 4-1. External Dimensions, Part Names and Functions Name Function Slide upward to operate the Main Power Switch and for external Detector Cover wiring. Keep the cover closed under normal use. Covering the mounting screws of the Carbon Monoxide Detector and Screw Cover fixation screws of detector cover.

  • Page 7: Part Names And Functions

    Power Switch Press and hold to turn ON/OFF the power. Buzzer Hole To sound an alarm. Cable Inlet Connect to external wiring. Use by cutting with nipper. Maintenance Switch Use for setting. 4-2. Part Names and Functions Name Function Slide upward to operate the Main Power Switch and for external Detector Cover wiring.

  • Page 8: Installation Instructions

    5. Installation Instructions WARNING This Carbon Monoxide Detector is not explosion-proof structure. Install in a non-hazardous location. CAUTION ▪ Handle with care to avoid damaging the Carbon Monoxide Detector caused by dropping or hitting. It may affect the detection performance. ▪...
  • Page 9 Clearance for Sensor cover to slide Sensor Mounting hole Cable inlet ▪ Install the Carbon Monoxide Detector with M4 internal thread of mounting screws (2-point, pitch 134) according to the following procedure. Open the screw cover Place a provided mounting screw temporarily (Upper side) Loosen the cover fixation screws Pull the detector cover 3.
  • Page 10 Slide the cover upward (Open) Tighten the provided mounting screw (Bottom side) Slide down the cover (Close) 7. Slide down the cover 5. Slide the cover upward 6. Tighten a mounting screw Push the cover to the body case Tighten a provided mounting screw (Upper side) 10.

  • Page 11: Wiring

    Keep the connection cable away from the electrical power line. ▪ The analog output of the KS-7D Carbon Monoxide Detector is not insulated from the power supply. When using the KS-7D Carbon Monoxide Detector with other equipment, provide electrical insulation to prevent sneak current.

  • Page 12: Assembling Of Pin Terminals And Insulation Caps

    6-1. Assembling of Pin Terminals and Insulation Caps Recommended Parts Names Model (manufacturer) Reference Shielded cable (0.5 to 1.25mm Electric Cable 10.5mm or less in outer diameter Included with shipment (for twisted wire 0.25 to Pin Terminal TC1.25-16 (NICHIFU) 1.65mm Insulation Cap VC1.25 (NICHIFU) Included with shipment...

  • Page 13: Connecting And Disconnecting To Terminal Block

    6-2. Connecting and Disconnecting to Terminal Block 6-2-1. Terminal Block for Power Source (To disconnect) (To connect) Insert the pin terminal to electric inlet hole. Press the release button with a precision screwdriver (recommended chip thickness: 2.6mm) and pull the pin terminal. 6-2-2.

  • Page 14: Operating Procedure

    7. Operating Procedure 7-1. Before Use WARNING ▪ Before supplying the power, confirm the power specification of the equipment and the power supply voltage. − 24V DC +/-10% CAUTION ▪ Before turning ON the power, make sure all the connections of each part are correct, in reference to “6.
  • Page 15 3) Follow the steps 7, 8, 10 of “5. Installation instructions” on page 6 to close the cover and Status Lamp screw on. 7. Slide down the cover. (Close) 8. Push the cover to the body case. 10. Fix the detector cover with cover fixation screw.

  • Page 16: Operation And Function

    7-3. Operation and Function 7-3-1. LCD Name Description Voice Alarm Indicates voice alarm is ON (Japanese only) Buzzer Alarm Indicates buzzer alarm is ON Stage Alarm Will be displayed at 1 stage alarm Stage Alarm Will be displayed at 2 stage alarm Will be displayed to indicate the time for sensor Sensor Replacement...

  • Page 17: Full Scale And Alarm Set Value

    7-3-3. Full Scale and Alarm Set Value Press the Reset Switch. (Beep) It will be displayed in order of “full scale concentration”, “1 stage alarm set value”, and “2 stage alarm set value”. Full scale: 75ppm stage alarm set value: 25ppm stage alarm set value: 50ppm 7-3-4.

  • Page 18: User Mode

    7-4. User Mode ▪ In User Mode, the gas detection, alarm activation, analog output, and contact NOTE output will function the same way as in normal mode, but the buzzer stop and silence the alarm sound will not operate. ▪ Make sure to return to normal mode after user mode. 7-4-1.

  • Page 19: Zero Adjustment [Mode Number 2]

    4) Press the Maintenance Switch for 3 seconds (beep, beep, pi, pi) <Select> Maintenance icon is displayed, and “1” and “MT” will be displayed alternately. Maintenance icon When the maintenance function remains ON and NOTE returns to the normal operation, maintenance icon will stay displaying and “concentration value”...

  • Page 20: Alarm Test [Mode Number 4]

    (alarm lamp and analog output will activate). CAUTION Alarm test activates the external contact of KS-7D. If this external contact output is used for the external interlocking control device, make sure to conduct an inspection of gas detection system before interlock release operation.
  • Page 21 1) In user mode, press the UP Switch (beep) to select “Mode Number 5”. “AL H” and “5” (mode number) will be displayed alternately. 2) Press the Maintenance Switch (beep). The latest alarm history number “H1” will be displayed. If there is no alarm history, “INIT”...

  • Page 22: Clock Setting [Mode Number 6]

    7-4-7. Clock Setting [Mode Number 6] Clock function is used for recording the alarm history. 1) In user mode, press the UP Switch (beep) to select "Mode Number 6”. “DATE” and “6” (mode number) will be displayed alternately. 2) Press the Maintenance Switch (beep). “YEAR” and “...

  • Page 23: Maker Mode

    7-5. Maker Mode WARNING ▪ A wrong setting may change specifications of the Carbon Monoxide Detector. Never operate other than the described in this instruction manual. ▪ The administrator should change the setting with responsibility. ▪ The Carbon Monoxide Detector does not work in maker mode. After the maker mode operation, make sure to turn off the power once, and restart in normal mode before use.
  • Page 24 5) Change the alarm set value with the UP and DOWN Switches. Change AL1 to 25ppm 6) Press the Maintenance Switch for 3 seconds. (Bleep, beep, pi, pi) The alarm set value is fixed and back to the display of “AL 1”...

  • Page 25: Maintenance Check

    8. Maintenance Check ▪ The daily inspection should be performed by the user. ▪ The periodic inspection should be performed regularly once a month or once a year by the user or New Cosmos. ATTENTION Span adjustment of gas sensor is extremely important to ensure the reliability of the Carbon Monoxide Detector.
  • Page 26 Refer to “7-4-5.Alarm Test” on page 18 and confirm the alarm activates properly. CAUTION The alarm test activates the external contact of KS-7D. If this external contact output is used for the external interlocking control device, make sure to conduct an inspection of gas detection system before releasing the interlock.

  • Page 27: Replacement Of Backup Battery And Clock Battery

    8-2. Replacement of Backup Battery and Clock Battery CAUTION ▪ Make sure to use “CR2 lithium battery” for backup battery. ▪ Make sure to use “CR2032 lithium battery” for clock battery. 1. Press and hold the Power Switch for 3 seconds to turn OFF the power. 2.
  • Page 28 8. Place a cover at the top portion of case. (Fit the E part of cover into the D part of case.) Upper part of case E part Upper part of cover D part Inserted 8. Fit in 9. Replace with a new sensor or battery.

  • Page 29: Troubleshooting

    9. Troubleshooting Before requesting repairs, please check the following items. Symptom Cause Solution Reference Either of the Main Power Turn ON the Main 7-2. Operating Switch or Power Switch is Power Switch or Power Procedure (page 12) Switch Check the connection The status lamp Loose connection 6.
  • Page 30 Symptom Cause Solution Reference Replace with a new ▪ Sensor Replacement accumulated time with sensor. 8-1. 6) Gas Sensor icon is on LCD the power on reaches one The buzzer will stop for Replacement (page ▪ Buzzer sound every year and informing the time one hour by pressing for sensor replacement.

  • Page 31: Specifications

    10. Specifications Detection Principle Electrochemical Cell Sampling Method Diffusion Type Target Gas Carbon Monoxide 0 to 75ppm, 0 to 150ppm, 0 to 250ppm or 0 to 400ppm Detection Range (Service range: Full Scale to 1000ppm) Gas Concentration Display 4-digit digital LCD, solution 1ppm (with backlight) F.S.75ppm: 25/50ppm, F.S.150ppm: 50/100ppm, Alarm Set Value...

  • Page 32: Warranty

    11. Warranty New Cosmos Electric Company Limited (New Cosmos) offers the following as the sole and exclusive limited warranty available to the customer. This warranty is in lieu of, and customer waives, all other warranties of any kind or nature, expressed or implied, including without limitation, any warranty for merchantability or fitness for a particular purpose.

  • Page 33: Detection Principle

    12. Detection Principle ▪ Electrochemical Cell Clean Air Carbon Monoxide Exists Detection Pole (Pt) Ion Conductor (Solid or liquid phase) Dielectric through OH- Reference Pole (Pt) Sensor Element Configuration and Electrode Equation Sensor is made up of noble metal catalyzed detection pole, reference pole and ion conductor. When the CO exists, the reaction of equation (1) with water vapor in the air on catalyst will occur.

  • Page 34: Glossary

    13. Glossary Gas Detector: A unit that detects gas concentration and converts it to electric signals. Diffusion Type: A method that detects gas by utilizing gas convection and diffusion. Target Gas: A gas that is indicated and sets off an alarm when detected. Detection Range: Range of gas concentration that can be indicated and set off an alarm.
  • Page 35 - 33 -...
  • Page 36 Manual Revision History Edition No. Date Revisions GAE-053-00 July 2014 Head Office New Cosmos Electric Co., Ltd. 2-5-4 Mitsuya-naka Yodogawa-ku Osaka 532-0036, Japan Phone 81-6-6309-1505 Fax 81-6-6308-0371 Tokyo Branch New Cosmos Electric Co., Ltd. 2-6-2, Hamamatsu-cho, Minato-ku Tokyo 105-0013 Japan...

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