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New Cosmos Electric KS-7DU Instruction Manual

Co sensor device for underground parking garage ventilation system
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CO Sensor Device for Underground
Parking Garage Ventilation System
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.
Model
Instruction Manual
KS-7DU
Instruction Manual No.
GAE-121-01
December 2016

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Summary of Contents for New Cosmos Electric KS-7DU

  • Page 1 CO Sensor Device for Underground Parking Garage Ventilation System KS-7DU 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. Precautions ..........................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

    Thank you for purchasing the KS-7DU CO Sensor Device for Underground Parking Garage Ventilation System. The KS-7DU CO Sensor Device for Underground Parking Garage Ventilation System is a sensor for carbon monoxide, which is toxic and combustible gas, as a sensor part of the ventilation system in underground parking garage in non-hazardous area.

  • Page 4: Precautions

    2. Precautions Read the following instructions thoroughly for proper operation. Ensure to install and operate the CO Sensor Device in accordance with applicable laws and regulations. WARNING ▪ This CO Sensor Device is not explosion-proof structure. Install in a non-hazardous location.

  • Page 5: Contents In The Package And Options

    3. Contents in the Package and Options The following items are enclosed with the KS-7DU CO Sensor Device for Underground Parking Garage Ventilation System. 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 Cover wiring. Keep the cover closed under normal use. Covering the mounting screws of the CO Sensor Device and fixation Screw Cover screws of cover.

  • Page 7: Part Names And Functions

    Buzzer Hole To emit the operation notification sound. 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 Cover wiring.

  • Page 8: Installation Instructions

    5. Installation Instructions WARNING This CO Sensor Device is not explosion-proof structure. Install in a non-hazardous location. CAUTION ▪ Handle with care to avoid damaging the CO Sensor Device caused by dropping or hitting, as it may affect the detection performance. ▪...
  • Page 9 Clearance for cover to slide detection port Mounting hole Cable inlet ▪ Install the CO Sensor Device with M5 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 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-7DU CO Sensor Device is not insulated from the power supply. When using the KS-7DU CO Sensor Device 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 Pin Terminal TC1.25-16 (NICHIFU) Included with shipment (for twisted wire 0.25 to 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: Banding Band

    6-3. Banding Band It has a place to thread a banding band near the cable inlet inside the case for bundling cables (see figure at right). At first, through the banding band, form a ring, through the cables in the circle before wiring, and bundle the cables at the end.

  • Page 15: 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 16 3) Follow the steps 7, 8, 10 of “5. Installation instructions” on page 6 to close the cover and screw on. 7. Slide down the cover. (Close) 8. Push the cover to the body case. 10. Fix the cover with cover fixation screw. CAUTION Power Switch Make sure to fix the cover with cover...

  • Page 17: Operation And Function

    7-3. Operation and Function 7-3-1. LCD Name Description AL1 Contact Will be displayed during the AL1 contact operation AL2 Contact Will be displayed during the AL2 contact operation. Sensor Replacement Will be displayed to to notify the sensor replacement Concentration/Information Indicates the gas concentration, error, etc.

  • Page 18: Full Scale And Set Value

    7-3-3. Full Scale and Set Value Press the Reset Switch. (Beep) It will be displayed in order of “full scale concentration”, “AL1 operation set value”, and “AL2 operation set value”. Full scale: 75ppm AL1 operation set value: 25ppm AL2 operation set value: 25ppm 7-3-4.

  • Page 19: Switching The Maintenance Function On And Off [Mode Number 1]

    Mode Mode No. Abbreviation Switching Maintenance Function ON/OFF Zero Adjustment 0.0 ppm Span Adjustment * * * ppm Contact Operation Test AL T History Confirmation AL H Clock Setting DATE 7-4-2. Switching the Maintenance Function ON and OFF [Mode Number 1] WARNING ▪...

  • Page 20: Span Adjustment [Mode Number 3]

    1) In user mode, press the UP Switch (beep) to select “Mode Number 2”. “0ppm” and “2” (mode number) will be displayed alternately. 2) Press the Maintenance Switch (beep) The current carbon monoxide concentration (ppm) (The concentration is 5ppm) will be displayed. 3) Confirm there is no gas around and press the Maintenance Switch for 3 seconds (beep, beep, pi, pi).

  • Page 21: History Confirmation [Mode Number 5]

    5) Press the Reset Switch (beep) to release the contact (Test concentration operation test and the current contact operation test is set to 50ppm) concentration will be displayed. (Press and hold the Reset Switch to return to normal mode without stopping test operation.) 6) To change the set value, repeat the procedure from 3) to 5).

  • Page 22: Clock Setting [Mode Number 6]

    5) Each time the DOWN Switch is pressed, the display will switch in order of year, month/day, and time of the start and end of alarm. (Year) (Year) (End) (Start) (Month, Date) (Start) (Month, Date) (End) (End) (Time) (Time) (Start) 6) Press the Reset Switch (beep) and the history number “H *”...
  • Page 23 5) Change the setting with the UP and DOWN Switches. (Change to 2014 from 2013) 6) Press the Maintenance Switch for 3 seconds. (Pi, beep, pi, pi) “YEAR” and setting year will be displayed alternately. (set to 2014) 7) To change the other items, repeat procedure from 3) to 6).

  • Page 24: Maker Mode

    7-5. Maker Mode WARNING ▪ A wrong setting may change specifications of the CO Sensor Device. Never operate other than the described in this instruction manual. ▪ The administrator should change the setting with responsibility. ▪ The CO Sensor Device 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 25: Initialization Of Cumulative Operation Time

    7-5-2. Initialization of Cumulative Operation Time The CO Sensor Device has a sensor replacement notification function (see “8-1. 5) Sensor Module Replacement” on page 26). It needs to initialize the cumulative operation time when the sensor module is replaced. 1) Shift to Maker Mode (flashing “775”). Make sure to read from “7-5.
  • Page 26 5) Press the Maintenance Switch for 3 seconds. The “operation time” is initialized and the cumulative operation time will be “0”. Cumulative operation time If the cumulative operation time cannot NOTE be initialized, the buzzer will sound and the operation time will not be “0”. In this case, press the Maintenance Switch while pressing the Power Switch for 3 seconds to turn OFF the power, and...

  • Page 27: 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 CO Sensor Device.

  • Page 28: Clock Battery Replacement

    5) Gas Sensor Replacement ▪ The recommended replacement cycle is 6 years under the normal use condition. However, if any abnormality, such as the significantly decrease of sensor sensitivity, is confirmed by a periodic inspection, it needs to be replaced. ▪...
  • Page 29 7. Hold the C part (both sides), and pull forward to detach from case. CAUTION Cover and case are connected by an electric cable. Cover Case CAUTION The electric cable connected 7. Pull to a case is behind a cover. C part Be careful not to disconnect.
  • Page 30 9. Replace with a new clock battery. Observe proper polarity when installing battery. CAUTION 10. Pull up the C part of cover from the case (reverse procedure of 8), and fit the A part of cover into the B position of case (refer to procedure 5). 11.

  • Page 31: 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 13) Switch Nothing is displayed Check the connection on LCD Loose connection...
  • Page 32 Symptom Cause Solution Reference If “E-S3” is displayed within one week from ▪ “E-S1” or “E-S3” is the installation and it displayed on LCD recovers within one 2. Precautions (page Sensor Error ▪ Analog output is less hour, it will be able to than 0.9mA operate normally.

  • Page 33: Specifications

    10. Specifications Detection Principle Electrochemical Cell Sampling Method Diffusion Type Target Gas Carbon Monoxide 0 to 75ppm Detection Range (Service range: Full Scale to 1000ppm) Gas Concentration Display 4-digit digital LCD, solution 1ppm (with backlight) ON: 25ppm Operation Set Value OFF: 10ppm Accuracy Within +/- 50% of operation set value...

  • Page 34: 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 35: 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 36: 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.
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  • Page 40 Manual Revision History Edition No. Date Revisions GAE-121-00 November 2016 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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