ewoo EW-401 User manual

GAS LEAK DETECTOR
MODEL: EW-401
Explanations
EWOO ENGINEERING CO., LTD.
TONGPRASERTCHAI CO.,LTD.

Table of Contents
1. Specifications
1-1. Specifications of the Indicator (EW401)
1-2. Specifications of the Detector
2. Function of Each Device and Title Explanations
2-1. Indicator
2-2. Detector
3. Wiring Diagram
4. Operation System Diagram
5. Installation Place and Installation Drawing
6. Operation Method and Instructions
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1. Product Specifications
1-1. Specifications of the Indicator
Name Gas Leak Detector (MODEL:EW401)
Detector Gases LPG LNG City Gas (Methane, Butane, Propane)
Combustible Gas
Power AC 220V. 60㎐ (AC 230V 50㎐ AC110V/ 50㎐ option)
Power Consumption Normal: 2.5W. Alarm: 3W
Operating Temperature Range
and Humidity -10℃~ 50℃, 0~95% RH
Readout Range 0 ~ 100% LEL
Alarm Point Within 25% (user adjustable*Variable setting)
Response Time Within 20 seconds
Visual Alarm and Audio Alarm Flickering of LED LAMP (yellow) and above 70Db of buzzer sound
Operating Indicator Lighting of LED LAMP (green)
Trouble Indicator Lighting of LED LAMP (Red)
Warm up Time 60 seconds
Connection Cable VCT or CVVS above O.75mm SQ Use over
Dimension 114*250*80
Outer Output DC 12V(20~30mA Output). Contact point of non-voltage
contact point NO.NC.COM(Relay contact point)
Capacity of Contact Point AC 110/1A. DC 12~24 2A
Weight Some 1,840g
1-2. Specifications of the Detector
Type Expansion Type
Detector Gases LPG LNG City Gas (Methane, Butane, Propane) Combustible Gas
Sensor Type Catalytic, Combustion (Hot-wire type) Diffusion Type
Operating Temperature Rang
and Humidity -20℃~ 50℃, 0~95% RH
Explosion-proof Type ExdⅡBT₄
Cable Connector Inside Dia 16mm/ Outer Dia 23mm
Dimension 137*142*75
Weight 1,036g
Readout Range 0~100%(LEL)
Response Time Within 20 seconds
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2. Function of Each Part and Title Explanations
2-1. Indicator (EW401)
① Power Lamp ⑤ Trouble Signal
- Lamp to confirm electricity status - Lighted in case of abnormal detection device or its line
(Green LED) (Red LED)
② Circuit Test Switch ⑥ Reset Switch
- To confirm operation status of receiver - As alarm is kept in case of gas leakage or line test,
unit internal circuit it will be reversed when reversion switch is pushed after
(Alarm, level meter, buzzer, relay) it drops on the densitometer.
③ Buzzer stop Lamp ⑦ Gas Density Indicator
- In case of pushing the switch against - Expanded gas density is marked by lamp level meter.
Alarm, buzzer turns off, and lamp around ⑧ LEL Indication
switch and etc. turn off. - Table indicating lamp level meter and LEL conversion
④ Buzzer Stop Switch
-In case of pushing the buzzer stop switch against alarm, alarm
sound stops and in case numerical value of re-pushing, alarm is sounded.
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2-2. Detector
① Sensor fixing hole ⑥ Sticker
- The hole for fixing the detector by bolts or nails -4m*6m
② Sintered Filter ⑦ Ground earth
- Sensor protection filter (bronze 300mesh) -M4*6mm
③ Cover Fixing bolt ⑧ Molded Cover
- The bolt for fixing cover and body of Detector
④ Cable grand ⑨ Molded Body
⑤ Cable Insert Device ⑩ Wire
-Cable pipe or fiexible screw(Female screw) -VCTF 0.75x3C (Blue, Brown, Green)
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3. Wiring Diagram
① 110/220 Input: To fix the power supply selection switch to AC110V or 220V
and then to connect the line. (AC230V 50㎐ AC110V/ 50㎐ option)
② Non-voltage contact point (NO.NC.COM): Contact (Switch) COM terminal and
NC terminal are connected at ordinary times. In case of alarming, COM terminal and
NO terminal are connected.
③ Sensor Connection Terminal (Blue, Brown, Green):It is connected to be
matched with wire colors arranged in detection device. Blue (Electric Line +),
Brown (Electric Line +), Green (Signal Line)
④ Signal Output (+.-): In case of alarming, it can be used for shut-off device or
other various devices with DC12V 30mA output.
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4. Operation System Diagram
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5. Installation Place and Installation drawing
5-1. Installation Place
1.Detection device shall be installed in the place where the leaked
gas easily stays, as the place where gas is easily leaked among
storage facilities and gas facilities.
2.The location where detection device is installed, shall be decided
as per the conditions such as characteristics of gas, instructions,
structure of each device and etc.
3.As for installation height of detection device, if the gas heavier than
air, it shall be installed within 30cm above the floor while if the one
lighter than air, it shall be installed within 30cm below the ceiling.
4.Installation place for receiver device of gas leak alarm device shall
be installed in the proper place to take every measure after alarm is
sounded, as the place where the relevant person resides or the alarm
can be identified.
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5-2. Installation Drawing
※ Installation Place: Kitchen of the restaurant, boiler room, governor room
and gas storage room.
6. Operation Method and Instructions
〈Operation Method〉
1. To open the front case and to fix the switch to the operation voltage
after finishing the connection of receiver device and detection device.
2. In case power supply switch turns on, power supply lamp will
be flickered for some one minute, and in case early stabilization
time is passed, power supply lamp will stops flickering and be lighted
and circuit will be operated in normal way.
3. In case detection device is disconnected, buzzer is sounded and
trouble signal is lighted.
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4. As for test operation of gas leak alarm device, in case of pushing the
circuit test button, density signal lamp is slowly up as gas is
detected, and then when alarm setting device is abnormal, alarm signal
lamp is lighted and alarm is sounded.
5. In case of pushing the buzzer button in order to stop the alarm sound,
normal operation will be made as it becomes in normal.
6. In case disconnection signal and trouble lamp are lighted, to confirm
the detection device and connection status.
〈Instructions〉
1. Optional disassembly, repair or alteration is not allowed by an
person except the relevant personnel of our company.
2. As for the product equipped with earthing terminal, earthing
line shall be surely installed
3. In case of connecting receiver device and detection device, the same
manufacturing number shall be connected.
4. To confirm the voltage before installation, to match 110V/220V
conversion switch to operation voltage.
5. Do not use any other gas except application objective gas.
6. Do not use it in the place where there is high vapor or strong wind.
7. Please check the detection element more than one time per year.
TONGPRASERTCHAI CO.,LTD.