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GAS LEAK DETECTOR

MODEL: EW-401

Expl anati ons

EWOO ENG NEERI NG CO. , LTD.

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Tabl e of Contents

1. Speci fi cati ons1-1. Speci fi cati ons of the I ndi cator (EW401)

1-2. Speci fi cati ons of the Detector

2. Functi on of Each Devi ce and T tl e Expl anati ons2-1. I ndi cator

2-2. Detector

3. Wri ng D agram

4. Operati on System D agram

5. I nstal l ati on P ace and I nstal l ati on Drawng

6. Operati on Method and I nstructi ons

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1. Product Speci fi cati ons1-1. Speci fi cati ons of the I ndi cator

Name Gas Leak Detector (MODEL:EW401)

Detector GasesLPG LNG Ci ty Gas (Methane, Butane, Propane)

Combusti bl e Gas

Power AC 220V. 60 (AC 230V 50 AC110V/ 50 opti on)

Power Consumpti on Normal : 2. 5W. Al arm: 3W

Operati ng Temperature Range

and Humi di ty-10~ 50, 0~95% RH

Readout Range 0 ~ 100% LEL

Al arm Poi nt Wi thi n 25% (user adj ustabl e*Vari abl e setti ng)

Response Ti me Wi thi n 20 seconds

Vi sual Al arm and Audi o Al arm Fl i ckeri ng of LED LAMP (yel l ow) and above 70Db of buzzer sound

Operati ng I ndi cator Li ghti ng of LED LAMP (green)

Troubl e I ndi cator Li ghti ng of LED LAMP (Red)

Warm up Ti me 60 seconds

Connecti on Cabl e VCT or CVVS above O. 75mm SQ Use over

Di mensi on 114*250*80

Outer OutputDC 12V(20~30mA Output). Contact poi nt of non-vol tage

contact poi nt NO. NC. COM(Rel ay contact poi nt)

Capaci ty of Contact Poi nt AC 110/1A. DC 12~24 2A

Wei ght Some 1,840g

1-2. Speci fi cati ons of the Detector

Type Expansi on Type

Detector Gases LPG LNG Ci ty Gas (Methane, Butane, Propane) Combusti bl e Gas

Sensor Type Catal yti c, Combusti on (Hot-wi re type) Di ffusi on Type

Operati ng Temperature Rang

and Humi di ty-20~ 50, 0~95% RH

Expl osi on-proof Type ExdBT

Cabl e Connector I nsi de Di a 16mm/ Outer Di a 23mm

Di mensi on 137*142*75

Wei ght 1,036g

Readout Range 0~100%(LEL)

Response Ti me Wi thi n 20 seconds

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2. Functi on of Each Part and T tl e Expl anati ons2-1. I ndi cator (EW401)

Power Lamp Troubl e Si gnal

- Lamp to confi rm el ectri ci ty status - Li ghted i n case of abnormal detecti on devi ce or i ts l i ne

(Green LED) (Red LED)

Ci rcui t Test Swi tch Reset Swi tch

- To confi rm operati on status of recei ver - As al arm i s kept i n case of gas l eakage or l i ne test,

uni t i nternal ci rcui t i t wi l l be reversed when reversi on swi tch i s pushed after

(Al arm, l evel meter, buzzer, rel ay) i t drops on the densi tometer.

Buzzer stop Lamp Gas Densi ty I ndi cator

- I n case of pushi ng the swi tch agai nst - Expanded gas densi ty i s marked by l amp l evel meter.

Al arm, buzzer turns off, and l amp around LEL I ndi cati on

swi tch and etc. turn off. - Tabl e i ndi cati ng l amp l evel meter and LEL conversi on

Buzzer Stop Swi tch

-I n case of pushi ng the buzzer stop swi tch agai nst al arm, al arm

sound stops and i n case numeri cal val ue of re-pushi ng, al arm i s sounded.

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2-2. Detector

Sensor fi xi ng hol e Sti cker

- The hol e for fi xi ng the detector by bol ts or nai l s -4m*6m

Si ntered Fi l ter Ground earth

- Sensor protecti on fi l ter (bronze 300mesh) -M4*6mm

Cover Fi xi ng bol t Mol ded Cover

- The bol t for fi xi ng cover and body of Detector

Cabl e grand Mol ded Body

Cabl e I nsert Devi ce Wi re

-Cabl e pi pe or fi exi bl e screw(Femal e screw) -VCTF 0. 75x3C (Bl ue, Brown, Green)

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3. Wri ng D agram

110/220 I nput: To fi x the power suppl y sel ecti on swi tch to AC110V or 220V

and then to connect the l i ne. (AC230V 50 AC110V/ 50 opti on)

Non-vol tage contact poi nt (NO. NC. COM): Contact (Swi tch) COM termi nal and

NC termi nal are connected at ordi nary ti mes. I n case of al armi ng, COM termi nal and

NO termi nal are connected.

Sensor Connecti on Termi nal (Bl ue, Brown, Green): I t i s connected to be

matched wi th wi re col ors arranged i n detecti on devi ce. Bl ue (El ectri c Li ne +),

Brown (El ectri c Li ne +), Green (Si gnal Li ne)

Si gnal Output (+. -): I n case of al armi ng, i t can be used for shut-off devi ce or

other vari ous devi ces wi th DC12V 30mA output.

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4. Operati on System D agram

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5. I nstal l ati on P ace and I nstal l ati on drawng5-1. I nstal l ati on Pl ace1. Detecti on devi ce shal l be i nstal l ed i n the pl ace where the l eaked

gas easi l y stays, as the pl ace where gas i s easi l y l eaked among

storage faci l i ti es and gas faci l i ti es.

2. The l ocati on where detecti on devi ce i s i nstal l ed, shal l be deci ded

as per the condi ti ons such as characteri sti cs of gas, i nstructi ons,

structure of each devi ce and etc.

3. As for i nstal l ati on hei ght of detecti on devi ce, i f the gas heavi er than

ai r, i t shal l be i nstal l ed wi thi n 30cm above the fl oor whi l e i f the one

l i ghter than ai r, i t shal l be i nstal l ed wi thi n 30cm bel ow the cei l i ng.

4. I nstal l ati on pl ace for recei ver devi ce of gas l eak al arm devi ce shal l

be i nstal l ed i n the proper pl ace to take every measure after al arm i s

sounded, as the pl ace where the rel evant person resi des or the al arm

can be i denti fi ed.

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5-2. I nstal l ati on Drawi ng

I nstal l ati on Pl ace: Ki tchen of the restaurant, boi l er room, governor room

and gas storage room.

6. Operati on Method and I nstructi onsOperati on Method

1. To open the front case and to fi x the swi tch to the operati on vol tage

after fi ni shi ng the connecti on of recei ver devi ce and detecti on devi ce.

2. I n case power suppl y swi tch turns on, power suppl y l amp wi l l

be fl i ckered for some one mi nute, and i n case earl y stabi l i zati on

ti me i s passed, power suppl y l amp wi l l stops fl i ckeri ng and be l i ghted

and ci rcui t wi l l be operated i n normal way.

3. I n case detecti on devi ce i s di sconnected, buzzer i s sounded and

troubl e si gnal i s l i ghted.

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4. As for test operati on of gas l eak al arm devi ce, i n case of pushi ng the

ci rcui t test button, densi ty si gnal l amp i s sl owl y up as gas i s

detected, and then when al arm setti ng devi ce i s abnormal , al arm si gnal

l amp i s l i ghted and al arm i s sounded.

5. I n case of pushi ng the buzzer button i n order to stop the al arm sound,

normal operati on wi l l be made as i t becomes i n normal .

6. I n case di sconnecti on si gnal and troubl e l amp are l i ghted, to confi rm

the detecti on devi ce and connecti on status.

I nstructi ons

1. Opti onal di sassembl y, repai r or al terati on i s not al l owed by an

person except the rel evant personnel of our company.

2. As for the product equi pped wi th earthi ng termi nal , earthi ng

l i ne shal l be surel y i nstal l ed

3. I n case of connecti ng recei ver devi ce and detecti on devi ce, the same

manufacturi ng number shal l be connected.

4. To confi rm the vol tage before i nstal l ati on, to match 110V/220V

conversi on swi tch to operati on vol tage.

5. Do not use any other gas except appl i cati on objecti ve gas.

6. Do not use i t i n the pl ace where there i s hi gh vapor or strong wi nd.

7. Pl ease check the detecti on el ement more than one ti me per year.