Once-Through Boiler

Please use Miura Boiler after reading this Manualaccurately and keep it at the place visible to you sothat you may read it conveniently any time.

KOREA MIURA CO., LTD

MANUAL No. TX-01-201205

TX-100

TX-200

TX-300

TX-400

MANUAL

Thank you very much for yourunchangeable encouragement onMIURA BOILER and purchasing itat this time.

Decide a person in charge of MIURA BOILER.This manual is a guide for using MIURA BOILER.

Be sure to decide a person in charge of it befor using and the

responsible person shall use it after understanding the manual fully.

And then proceed to working through carrying this manual with you

all the time.

Contents of the manualThe major contents of this manual are classified into TX type outline,

major function, inspection on operation system before using,

operation, repair & inspection and trouble & its remedy.

GuaranteeThe matters to be observed on operation and safety described in this

manual are related only to the case that the boiler is used only for the

designated purpose.

Never use the method that is not described in this manual. We are not

responsible for the using method that is not recorded in it.

Contact point on the product and manualIf you have any question on the purchased product or this manual,

contact our A/S office any time without further hesitation.

Ⅰ Term

Table of contents

2

Careful matters before using the boiler 7

Simple clothes and wearing of protective devices 8

When an abnormality is found out 9

Careful matters when using the boiler 10

Preparation of a fire extinguisher emergemcu medicine 10

Prohibition of remodeling without permission 11

Request at the time moving and resale 11

Ⅲ Basic careful matters 7

Ⅴ Inspection before using 15

Control Panel : Identification 18

Operation of main steam V/V 19

Water drain of feed water pump 20

Air drain of feed water pump 21

Ⅵ Directions for Operating Devices 18

TX-100 12TX-200 13TX-350 14

Ⅳ Title of each part 12

Using purpose and operation principle 4Ⅱ

Inspection and preparations before starting 22Ⅶ

Best p

artner for nature, water and

environment

Miu

raB

oile

r

Starting (Ordinary directions) 24Stop 25

Inspection matters during operation 26

Ⅷ Directions 24

In case a buzzer sets off and the error monitoring lamp is on. 48Resetting of elecronic S/W 50Check on a connection terminal of electrode preservation device 51Remedy on electric leakage 52Directions for Air Bleeding of Oil Pump 53

TX Series 54

Ⅹ Troubleshooting 48

In case of possible destruction by freezing 27When a boiler is not used for a long period 28Table of the place and time for inspection and cleaning 29Inspection on chemicals feed pump 30Inspection on soft water 33Inspection on oil pressure 34Cleaning of burner 35Cleaning Cds cell 37Cleaning of oil strainer 38Cleaning of oil tank 39Inspection on steam pressure 40Blowing method 41Cleaning of feed water tank inside 43Cleaning of feed water strainer 44Analysis of water quality 46Safety valve 47

Ⅸ Repair & inspection 27

Appendix 55XII

Specifications 54XI

2

The following captioned term has been used so that efficient handling together withsafety may be made.Please use the Boiler after understanding captioned term fully.

I Term

Warning In case of incorrect handling it may cause the user to bekilled or injured seriously.

Attention In case of incorrect handling it may cause the user to beinjured or incur material damage.

Note

Meaning of sysmbol mark

In case convenient matters and points are explained in orderto prevent the trouble of machine body and carry outefficient work.

Page The number beside this mark displays related page.

ProhibitionThis mark displays prohibition.Specific prohibition contents in the middles of this code andnear it are displayed.

3

■The terminalogies that have been used in this manual are collected and check the themand their meaning.

Terminology Meaning

Low water

Pre purge

Post purge

Scale

Sludge

Raw water

Soft water

Feed water

Carry-over

Blowdown

Water tube

O LIMBER

Mixed influx of air

When designated water level is not reached, an action without transition to ignition..

Ventilation of inside of combustion chamber before starting combustion.

Ventilation of inside of combustion chamber after combustion. .

Attached substances impurities such as calcium and magnesium contaied in the water.

Impurities sunk in boiler inside.

The water before water treatment.

The water removed from calcium and magnesium contained in the water.

The water to be treated and trasferred to boiler or the condition of water transferring.

The phenomenon that impurites and moisture in boiler water together with steam are given off.

Draining the water in boiler inside.

Tube that boiler water flows in inside and is in contact with combustion gas.

System heating the supplied water to reduce O ¸ melted in the water.

The condition that P/P is not operated normally with influx of air into P/P.

2

4

water line

steam line

drain line

■`Once-through boiler

The boiler water pushed into the pipe is heated by burner combustion.

The heated water evaporates into steam and supplied to the load.

II Using purpose and operation principle

■`Boiler chamber and steam flow

Once-through boiler

원전변 전원브레이커 차단기

연료

연료밸브

급수 밸브Water valve

Fuel valve

Softening

Drainpipe

Fuel

Breaker Safety valve

power supply

Water softener

Water tank

Chemical injector

Boiler

Steam leather

Steam condensation

Trap

Heat exchanger

Chemical injector (food line steam condenser)

Reaction inside the boiler

5

■`Water softener

The source water is hard water in most cases. The water softener changes it into softwater. It supplies source water into the column of about 1mm, transparent, yellowish-brown and filled withcation exchange resin, ion-exchanging the hardness components (Ca, Mg) with Na ion and removingthe components. With ion exchange capacity retained and due to the brine in the salt container, the cation exchangeresin gives regular regenerations. The resin needs to be replaced or added when it is deteriorated.

Cation exchange resin

Magnified resin ColumnBrine tank

Salt

Brine

Ion exchange resin

PebbleCatchment pipe

■`Chemical injector

It injects anticorrosive chemical into the boiler.

It injects pH adjuster, deoxidizer and scale remover into the water.

It is composed of the pump, chemical tank, pipes and valves.

Chemical injector How to deaerate

Deaeration adjustment valve

Air

6

■`Hardness leakage checker

It checks the soft water treated out of the water softener.

■`Source water unit

It pressurizes source water up to the pressure the water softener needs.

Colormetry

Note

Tap water and groundwater, widely used as boiler water, contain various impurities that can causescaling, corrosion, carryover and so on and greatly affect their lifespan and efficiency. This is why awater treatment system for water quality management is necessary. Miura Boiler manufactures types of water treatment devices fitting into its boiler products. The above are standard water treatment systems. Please consult our warranty service center about thesystems optimized for the boilers you use.

Source water unit

7

Warning

Careful matters before using the boiler

●When operating MIURA Boiler, observe all of the following careful matters.

If not observed, personal accident may take place.

III Basic careful matters

Check the installation condition.Check that themachine has beeninstalled accuratelyaccording to theinspection beforeusing.

☞15page

Don’t misuse the boiler.Never operate themachine and do notrepair work until thismanual is understoodfully.

Never use boiler water as dringking one.Since the boiler watercan be changed byused water qualityand piping materials,never use it as drinkone.

Be sure to carry out a trial operation.Carry out a trialoperation by aperson in charge ofA/S after checkingthe installation.

Be sure to designate a person incharge of handling the boiler.When using themachine, be sure todesignate a personresponsible forhandling and theperson use it afterunderstanding thismanual fully.

Report are required when using theboiler.In using the boilervarious reports arerequired. Consult aperson in charge ofour marketing stafffor the detailedmatters.

8

Warning

Simple clothes and wearing of protective devices

Do work in simple clothes.Never operate the machine and do not repairwork throngh wearing loose clothes,accessories, etc. easily to be caught on valvesand machine parts.Never wear the clothes attached with oilslikely to catch a fire.

Wear protective devices.Wear helmet, protective glasses, safety shoes,gloves, etc.According to work. In particular, wheninjecting chemicals, wear protective glassesand rubber gloves so that the hands and eyesmay not be in contact with them.

9

Warning

When an abnormality is found out

●When operating MIURA Boiler, observe all of the following careful matters.

If not observed, personal accident may take place.

When an abnormality such as abnormal sound, smell, smoke, fuel leakage, etc. is found out, lockup fuel valve directly after turning operation S/W as “OFF”. A danger such as a fire or a blast maytake place.

Abnormality handlingObserve the instruction of ourcompany on abnormality handling.Never use the machine in the statethat the cause for abnormality hasnot been removed fully, which maylead to dangerous fire, blast, etc.

Inflammables or use of firestrictly prohibited with agas leakOpen the windows or doors andlet some fresh air in. Do not use switch on ventilationfan, can cause explosion

10

Warning

Careful matters when using the boiler

Use designated fuel.In case of using otherfuel than designatedone a blast may takeplace.

Use ventilation equipment (exhaustfan) when operatingWhen operating,make an operationtogether withventilation and don’tclose ventilation port.Intoxication of carbonmonoxide byincompletecombustion may takeplace.

Strict separation of boiler fuel frominflammable substancesIn case boiler fuel isplaced near inflammablematerials a fire maybreak out.Never placeinflammable substancesnear the boiler.Never placeinflammable substancesinside a control box.

Never touch the boiler thoughtlesslywhen operating.Don’t touch other partthan operation one whenoperating the machine,which may causedangerous electricshock, scald, etc.

Preparation of fire extinguisher and emergency medicine

Install a fire extinguisher without fail.In preparation for anyemergency, install afire extinguisher andunderstand its usingmethod.

Prepare a box for emergencymedicine.Designate the storingplace of emergencymedicine box andprepare it.

11

Request at the time of moving and resale

Please contact our company at thetime of moving and resale of boiler.For operation of boiler, a proper installationwork and an optimum additional device arerequired. At the time of moving and resale ofboiler, contact our marketing office withoutfail.Other installation work and additional deviceconnection than those designated by us areprone to cause personalaccident so you had betternot do that for the safety.

At the time of resale attach themanual.Since the manual is required for boileroperation, hand over it to enduser together atthe time of resale.

Warning

Prohibition of remodeling without permission

●When operating MIURA Boiler, observe all of the following careful matters.If not observed, personal accident may take place.

Never remodel the machine.Remodeling not recommended by our company may cause theproblems in safety such as connection to related additionaldevices, piping. etc. In case of remodeling, consult our A/Sstaff in advance.Our company is not responsible for the remodeling withoutour prior approval.

12

IV Title of each part

■`TX-100

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22No Description Qt’y No Description Qt’y No Description Qt’y

Boiler assembly

Boiler body

Ball valve

Water feed pump

Safety valve

Blower

Blower motor

Oil pump

Oil pump motor

Electronic V/V

Flame detector

1

1

1

1

1

1

1

1

1

1

Boiler body

Ball V/V

Bed

Inspection hole

Economizer

Transformer

Wind box

Water level gauge

Steam pressure gauge

Steam pressure S/W

Steam pressure S/W

1

1

2

1

1

1

1

1

1

1

1

Ball V/V 1

13

■`TX-300

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

No Description Qt’y No Description Qt’y No Description Qt’y

Boiler assembly

Boiler body

Ball valve

Water feed pump

Safety valve

Blower

Blower motor

Oil pump

Oil pump motor

Oil pump motor gauge

Electronic V/V

1

1

1

1

1

1

1

1

1

1

Flame detector

Burner

Inspection hole

Carry rod

Steam pressure gauge

Control box

Main Steam V/V

Transformer

Water level gauge

Bed

Chimney

1

1

1

2

1

1

1

1

1

1

1

Steam pressure S/W

Ball V/V

1

1

14

■`TX-350

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

No Description Qt’y No Description Qt’y No Description Qt’y

Boiler assembly

Boiler body

Inspection hole

Ball valve

Water feed pump

Safety valve

Blower

Blower motor

Oil pump

Oil pump motor

Oil pump motor gauge

1

1

1

1

1

1

1

1

1

1

Electronic V/V

Flame detector

Burner

Inspection hole

Carry rod

Steam pressure gauge

Control box

Main Steam V/V

Transformer

Water level gauge

Bed

1

1

1

1

2

1

1

1

1

1

1

Chimney

Steam pressure S/W

Ball V/V

1

1

1

15

Warning

●Before using MIURA Boiler, check the following installation item and makesure that they are installed correctly. The danger of serious accident is existentall the time so you are recommended not to use the machine under incorrectinstallation situation.

V Inspection before using

■`Boiler roomIs ventilation device (exhaust fan) installed?Check if the ventilator and exhaust fan are installed. If a sufficiant airexhaust is unavailable, dangerous toxic of carbon monoxide and blastby incomplete combustion may take place as well.

■`Boiler bodyIs boiler body installed on the incombustible materialbase?Check if the material of base is not made of wood such as inflammablematerial. If it is used, a fire and other accidents may take place.

Is the distance between boiler and combustiblematerials sufficient?Boiler installation shall not be made in the inflammable and dangerousmaterial handling place and make sure that the distance frominflammable materials is farther than 45cm.

■`Fuel pipingAny fuel leakage in fuel piping? Longer than 2m inhorizontal distance between oil tank and boiler?If not snfficient in horizontal distance between oil tank and boiler anexplosion is likely to take place dangerously.

Is not the fuel in fuel piping leaked out?Is a gas leakage alarm installed?Install a gas leakage alarm in LPG or LNG for exlusive use boiler.

LPG is heavier than air, thereby causing the gas blast through

being accumulated on the floor.

LNG is lighter than air, thus bringing about the gas blast through

being collected on the ceiling.

Inspection item before using

Exhaust deviceVentilator

Inflammablematerial

Inflammable material

Farther

than

Farther than

16

Warning

■`Electric workIf warning matters on electric work are not observed,it may lead to electric shock or other serious accident.

Is power source only for boiler?Make sure that an exclusive use breaker as powersource of boiler is attached.

Is electric leakage breaker attached?Check if a breaker attached to main power source isan electric leakage one.

Do you use designated product for cablethickness?Check if cable thickness and breaker capacity are inaccordance with designated specification or not.

Is ground wiring connected to earthterminal?Make sure that ground wiring is connected to earthterminal inside a boiler control box.

■ Installation of exhaust tubIs penetration part of exhaust tubcomposed of incombustible materials?Make sure that penetration part of exhaust tub iscomposed of incombustible materials. If it is composedof combustible materials a fire may take place..

Are combustible materials not near thecircumference of exhaust tub?Check if inflamable materials are not near thecircumference of exhaust tub. If they are existentnearby, it may be the cause for a fire.

Is the connection part airtighted and fixedsecurely?Check if airtightness and fixation of it are made fullyor not. If not, a toxication accident by exhaust gasleakage may take place.

Electric leakagebreakera

Electric leakagebreakera

Breakercapacity

Wiring

Earthterminal

Exhaust tub

Incombustiblematerials

17

Warning

■`Safety V/V discharge pipingIs there not any danger in the direction of thedischarge piping end?Make sure that the direction is not dangerous to peopleeven though hot water is discharged at the dischargepiping end?If the end of piping is toward people there is a danger of aburn and other accidents at the time of hot waterdischarge.

Does the discharge piping not move withreaction by discharging?Make sure that the discharge piping is fixed securely. Ifnot, the piping will move with reaction by discharging,thereby causing a burn and other accidents at the time ofhot water discharge from piping.

■`Blow pipingDoes piping not move with reaction by blowwater?Checking if piping is fixed securely or not. If not, thepiping will move with reaction by discharging, therebycausing a burn and other accidents at the discharge of hotwater discharge from piping.

Is the end opened to safe place such as bitand etc?Check if the end of drain piping is opened to safe placesuch as a bit and etc.If the end of piping is installed in the place without draindevice, the hot water discharge when draining the watermay cause a scald and other accidents.

Safety V/VDischarge

piping

Drain piping

Bit

●Before using MIURA Boiler, check the following installation item and makesure that they are installed correctly. The danger of serious accident is existentall the time so you are recommended not to use the machine under incorrectinstallation situation.

18

Control Panel : Identification

VI Directions for Operating Devices

Power

Operation

Combustion

Normal Water Level

Low Water Level

Non-arrival

When the Boiler is powered ON, it lights on.

When the Operation Switch is ON, it lights on.

It lights on while boiler is under combustion mode.

It lights on if the water leveltouches the S-pole.

It lights on if the water leveltouches the L-pole.

If either non-arrival fails or combustionbecomes extinct, it lights on andnotifies abnormal state.

ON mode allows the Combustion Switchto be ON.

ON mode allows Combustion.

19

1. Prepare a ladder.

2. Check location and direction of main steam V/V.

3. Open and close the main steam V/V on the ladder.

Note

In case a steam header is being installed during piping work, open main steam V/V.Main steam V/V of steam header plays a role of main steam V/V instead.Install backflow prevention V/V (check V/V for steam) in steam piping between steam header and boiler.

Warning

Since main steam V/V is located at high place and its footing is limited, operate it in proper clothes(long

sleeve, long pants, safety shoes, safety helmet, gloves, etc) when switching on and off.

Since whole boiler body is in the high temperature state directly after stopping it, never touch other part

than the handle of main steam V/V. If touched, you may incur a scald and other injury.

Warning

Never jump up and down the ladder. When going upand down, be sure to hold the ladder with both handsand one leg or one hand and both legs in order thatyou may go up and down safely against the danger offalling down.

ClosedOpened

Operation of main steam V/V

20

■`Water drain of feed water pump

1. Close V/V of water supply and feed water source.

2. Open V/V of water drain and air drain in the feed

water pump.

3. Check if the water does not drain from water drain

V/V.

4. Close V/V of water drain and air drain in feed water

pump.

Note

V/V of water drain and air drain in the feed water pump is somewhat different from that in

specification in some cases. Consult our A/S staff for proper use before using.

Note

In case of solving the freezing problem by water

drain of water tube and feed water pump, do drain

work of feed water pump as follows. Drain work of

feed water pump shall be done after drain of water

tube.

Note

Never turn V/V of water drain and air drain more

than once. The water may eruput suddenly.

Warning

For the boiler of hot water specification and drain recovery, since the water in feed water piping is hot,

do not work until the feed water piping cools down ( longer than 2 hours from the stop of boiler) fully in

order to prevent any injury such as a scald and etc.

Closed

Opened

Air drain V/V

Water drain V/V

Feed water pump

CloseOpen

Water drain of feed water pump

21

■`Air drain of feed water pump

1. Open V/V of feed water source and feed water.

2. Open V/V of air drain in the feed water pump.

3. Check if only the water comes out through an isloation

of air.

4. Close air drain V/V

Note

V/V of water drain and air drain in the feed water pump is somewhat different from that in

specification in some cases. Consult our A/S staff for proper use before using.

NoteFor the remedy on freezing in winter season bycleaning and draining the feed water strainer and incase of the feed water pump filled with air, do thedrain work as follows. If air is not drained the feedwater pump does not work properly. Never operateit until air drain is completed. When you operateP/P in the state that water is not existent the P/Pmay be broken badly.

NoteNever turn air drain V/V more than once. Thewater may erupt suddenly.

WarningFor the boiler of hot water specification and drain recovery, since the water in feed water piping is hot,do not work until the feed water piping cools down (longer than 2 hours from the stop of boiler) fully inorder to prevent any injury such as a scald and etc.

Closed

Opened

Air drain V/V

Water drain V/V

Feed water pump

CloseOpen

Air drain of feed water pump

VII Inspection and preparations before starting

22

■`Check the following items before operating a boiler.

Opened

Opened

Opened

1. Check if a short circuit breaker inside a control box is

OFF or not.

If it is ON, turn it as OFF.

2. Turn main power as ON.

3. After opening air drain V/V of water pipe for about 5seconds, close it.

4. After checking if the water is filled in feed water tankabove 2/3, open V/V of feed water source and feedwater.

5. In accordance with 「using method of operation systemand air drain of feed water pump」in chapter 6, drainair from the feed water pump.

☞21page

Warning

Don’t operate the boiler with wet hands, which may

cause an electric shock.

Warning

Don’t operate the boiler with wet hands, which may

cause an electric shock.

NoteWhen main power is not used for a long time, turnit as OFF. Without it you may incur an electricshock.

Warning

In case even little pressure is left within the boiler(when a steam pressure gauge marks 0kg/cm²above),do not open air drain V/V of water pipe. If it isopened, an eruption of steam may bring about a burnand etc.

23

Opened

Opened

Closed

6. Confirmation of fuel

■The case which will use the gas.

Open the gas inlet valve.

Read chapter 9「Maintenance/gas pressure checking up」and

check whether gas pressure gauge is on the normal.

■The case which will use the oil.

Check if the fuel is filled fully in tank and open the

fuel V/V in it.

7. According to 「Repair & inspection/Chemicals injection

inspection」, check if designated amount of chemicals

is in chemicals injection TK or not.

☞30page

8. According to 「Repair & inspection/Soft water

inspection」in chapter 9, check if feed water is made as

soft one or not.

☞33page

9. Check if main steam V/V is closed or not. If not

closed, close it in accordance with 「Using method of

operation system/Operation of main steam V/V」in

chapter 6.

☞19page

10. Turn a short circuit breaker within a control box as

ON.

Warning

Don’t operate the boiler with wet hands, which maycause an electric shock.

VIII Directions

1. Refer to the Chapter 7 [Inspection & Preparations

before Starting].

☞18page

2. Turn ON the Operation Switch.

The operation lamp lights on and the water level

control & metering control initiate.

If the water falls below the designated level, the

Low Level lamp will be on to start running the Feed

Water Pump.

If it reaches the designated level, the Low Level

lamp will be off to stop the Feed Water Pump.

3. Turn ON the Combustion Switch.

Enter the Arrival Mode after applying the pre-purge

for about 15 seconds, and then, start the Combustion

mode.

4. Wait until the steam pressure gauge indicates 0 to

2kg/cm.

5. Refer to the Chapter 6. [Directions for Operating

Devices/ Main Steam Valve Control] and slowly open

up the main steam valve.

☞11page

Starting (Ordinary directions)

24

Power

Operation

Combustion

Normal Water Level

Low Water Level

Non-arrival

Power

Operation

Combustion

Normal Water Level

Low Water Level

Non-arrival

25

1. Turn fire S/W as OFF.

A fire lamp is it off.

Acoording to the condition a post fire is executed.

Thereafter a post purge is being executed.

2. Check if a post fire is completed or not.

.

3. Turn operation S/W as OFF.

4. Turn a short circuit breaker in a control box as OFF.

5. Turn main power as OFF.

6. Pursuant to 「Using method of operation

system/Operation of main steam V/V」in chapter 6,

close main steam V/V.

☞38page

7. Close V/V of water supply, main water supply and

main oil.

Stop

Main steam V/V

ClosedWater supply V/V

Main oil V/V

Note

If an operation is stopped without a sufficient

purge, the gas heaped within the furnace may be

the cause for trouble.

WarningIn case of danger of freezing, take a freezing remedyaccording to 「Repair & inspection / Danger offreezing」in chapter 9.In case of stop for a long time, see 「Repair &inspection / Standstill for a long time」in chapter 9.

26

1. Make sure that black smoke or white one comes out ofa stack or not.

2. Make sure that any abnormality of a blower, a feedwater pump, etc in operation sound is present or not.

3. Make sure that serious vibration or abnormal value inan indicator of steam pressure gauge and oil pressureguage i present or not.

4. Make sure that any fuel leakage is present or not.

Warning

When abnormal phenomenon such as abnormal sound, smell, smoke, etc takes place, turn operation S/WOFF and close fuel V/V. Fire and explosion are likely to take place.For abnormal phenomenon handling, follow an instruction of our company A/S staff. Never use ourboiler in the state that the cause for abnormality is not removed fully.It may lead to the cause for a fire and explosion.

Inspection matters during operation

27

IX Repair & inspection

1. Stop an operation according to 「Starting / Stop」inchapter 8.

☞43page

2. Wait until the display of a steam pressure gaugereaches 0to 2kg/cm².

3. Open V/V of a water tube blow slowly and blow thewater tube.

4. When a steam pressure gauge exceeds 2kg/cm², do notopen V/V of the water tube blow.

5. Close V/V of the water tube blow.

6. Drain the water form feed water pump according to「Using method of operation system / Drain of feedwater pump」in chapter 6.

☞39page

Note

The following instructional freezing remedy is an example. According to the regional situations boiler

installation, take a comprehensive freezing remedy including circumferential instruments. For the

freezing remedy, consult our A/S office freely any time.

In case of possible destruction by freezing

Warning

Each part of boiler is made of hot temp. materials.Never touch other part than water tube blow V/V,which may cause a scald.Do not open water tube blow V/V abruptly, whichmay lead to a burn by means of abrupt eruption of hotwater.Check if blow piping is fixed securely in order that itmay not be moved by any reaction of blow.Check if the end of blow piping is opened to safeplace such as a bit and etc.

■`A freezing remedy by drain of water tube and water supply P/P

Close

Blow V/V

Open slowly

27

28

NoteIn case a boiler is not used for a long time a proper preservation and control for the boiler is veryimportant.When the boiler comes to a standstill the concern about the maintenance & repair of the boiler tends tobe negligent.Without good preservation condition of water tube during the standstill of the boiler some corrosionsmay be rusted dangerously.The preservation method is classified into the full water one in application of the water removed fromremained oxygen and the drying one by maintaining the inside of the boiler.

When a boiler is not used for a long period

In case of the standstill, consult our A/S office any time without fail.

29

Warning

Do not other work than the designated one, which may lead to personal accident.

Table of the place and time for inspection and cleaning

In order to maintain high economical efficiency and safety of EZ type MIURA Boiler for a long time andprevent any possible accident in advance, take the following inspection and cleaning on a regular basis.(Check the details with our A/S staff.)

Even with standard inspection periods described herein the times of inspection and cleaning increasenaturally according to using condition such as bad water quality and etc. The proper times are subject tousing situations so follow the instructions of our A/S staff without fail.

Items of inspection and cleaningEvery day 1 month 3 months Every year

Period of inspection and cleaning

Inspection chemicals feed pump

Inspection on a water softener

Inspection on steam pressure

Inspection on oil pressure

Inspection on combustion

Inspection on the low water level warning

Cleaning of the water supply tank inside

Cleaning of a water supply strainer

Request for water quality analysis

Inspertion on oil strainer i

Cleaning of burener

Cleaning of oil tank

Inspection on safety V/V

●

●

●

●

●

●

●

●

●

●

●

●

●

30

1. Check remained chemicals through looking intoChemicals tank.

2. In case remined amount is small, insert an indicatedinput amount of cleaning chemicals into the Chemicalstank through weighing it together with our A/S staff.

Note

Chemicals feed pump is essential to the water quality control of boiler. Use it correctly through readingthe manual of chemicals injection system thoroughly before using it. And keep it at hand together withboiler manual in order that you may read them conveniently any time.

Inspection on chemicals feed pump

Warning

In case of inputting chemicals, be sure to wearprotective glasses and gloves. If they are in contactwith your eyes and hands you may incur a loss ofeyesight and an injury on the hands.If the chemicals touch your skin directly, wash it withthe flowing water immediately.If they enter into the eyes, wash them with theflowing water instantly and consult with a doctor aswell.

■ Inspection on remained chemicals

NoteFollow the instructions of our A/S staff for an inputamount of chemicals.If you are negligent in supplimenting thechemicals, an air enters into chemicals feed pumpto the extent that the chemicals can not be suppliedto a boiler so you are required to inspect remainedchemicals without fail.In case of slow consumption of chemicals in thechemicals tank the air may enter into the chemicalsfeed pump so drain the air in the tank.

Chemicals feed pump

Chemicals

31

WarningWhen draining an air in the chemicals feed pump,wear protective glasses and gloves without fail. If thechemicals are in contact with the eyes and hands aloss of eyesight and an injury on the hands may takeplace.

Note

In case an air enters into the chemicals injectionP/P, drain an air in it in the following manner.

1. Turn combustion S/W as OFF.

2. Check remained chemicals in the chemicals tank.

3. If remained chemicals are small, replenish them intothe tank.

4. According to the manual of chemicals feed pump,attach one end of tube for air drain being an accessoryof chemicals feed pump to air outlet and put other endof tube into a weighing cup.

Chemicals

Tube for air drain

■`Air drain of chemicals feed pump

32

5. Loosen air drain V/V of chemicals feed pump. Air drain

Open

Open

Air

Chemicals

Close

Close

WarningNever turn air drain V/V of the chemicals feed pumpmore than twice. Through eruption of chemicals youare likely to incure a loss of eyesight and an injury onthe hands.

6. Open blowdown V/V of water tube in boiler.

7. Opening blowdown V/V water, while water supply tothe boiler is being progressed the chemicals feed pumpis operated and then the chemicals including an aircome out. If all of air in the pump is emptied out, onlythe chemicals come out.

8. Check if an air in the chemicals feed pump is emptiedout and only the chemicals come out.

9. Close air drain V/V of the chemicals feed pump.

10. Close blowdown V/V.

11. Place the tube for air drain to the original location.

12. Check if the chemicals are leaked out or not. In caseof their leakage, wash them with soft cloth cleanlyand remove the cause for the leakage.

33

Attention

Do not automatically mix the water in the poly beaker. It makes measuring the exact amount impossible.For specific measurement, drop 4 droplets of hardness indicator. Keep 50mL of water acquired fromsafety valve. The hardness indicator should be slowly dropped with the pipette vertically positioned. After shakingenough, get water until the amount reaches 50mL. Examine the color change immediately. After morethan 10 minutes, color change becomes dull with exact measurement failed.

Inspection on soft water

1. Previously, discharge about 2L of water powerfullyfrom the safety valve (excreting congested water)

2. From safety valve, wash the accessory poly beakerwith water frequently.

3. Add 4 drips of indicator to the poly beaker(Samplingwater first may make it difficult to mix the hardnessindicator)

4. Get about 20mL of water from safety valve and pour itto the poly beaker. Shake it frequently.

5. After shaking it frequently, get the water from safetyvalve and pour it to the poly beaker until the amountreaches 50mL.

6. Check the water color in the poly beaker.Water color~Blue : Soft waterBlue purple~Red : did not become soft water

■`Checking soft water

Water softener

Salt

Salt lump

Saline water

Hardness indicator

Inspectioncock

Cork fortesting water

34

Rated value of oil pressure

1. Inspect oil pressure during boiler combustion.Make sure that a combustion lamp is lit up.

Note

For oil pressuree inspection, do it during boiler operating. An oil P/P is operated in the state ofcombustion but accurate pressure inspection is not possible if oil P/P is not operated.

Inspection on oil pressure

WarningEach part is in the state of hot temperature duringboiler operation, don’t touch it. You may suffer someburn.

2. Make sure that marking of oil pressure gauge is ratedvalue or not.

Warning

In case any abnormality is present in oil pressure,contact our A/S office after stopping an operationimmediately. If operating a boiler in the state ofabnormality of oil pressure continuonsly, somepersonal accident may take place.

Kind of boiler Pressure

10kg/cm2±1

12kg/cm2±1

12kg/cm2±1

TX-100

TX-200

TX-350

35

1. Turn OFF the main power of the boiler.

2. Close the Oil Valve of an Oil Tank.

3. Disassemble the fixed screw of the burner cover in theupper side of the wind box and the copper pipe union.

4. Pull out the purification cord out of the arrival pole andtake out the frame eye before disassembling the mainbody of the burner.

5. Remove the soot stained on the baffle plate with abrush and so on.

6. Turn the nozzle chip to disassemble it from the burner.

Note

The cleaning cycle of a burner varies in conditions of use and status of fuel. Therefore, refer to theinstructions of the Customer Service Manager of our company.

Cleaning of burner

Warning

Avoid operating the Main Power with a wet hand.

Otherwise, you may get electric shock.

Warning

Each unit is under high temperature right after the boiler has stopped. Do not contact those units exceptfor the Burner unit. Otherwise, you may get burned.

Main power

Close

Fuel V/V of oil tank

36

Nozzle chip

Contact surface

7. Wipe the soot stained on the nozzle chip with a clothand so on.

8.Check if there is any glitch on the side that contacts thenozzle chip and the burner.

9. Assemble units in the reverse order of the disassembly.

10. Check if the copper pipe union is tightly fastened.

Note

When cleaning the fuel jet on the upper side of the nozzle chip,be careful for smoke or foreign materials as they may block it.

Note

Once the nozzle chip is taken out, oil comes out fromthe oil pipe. Therefore, receive the oil in a container.

Warning

If you find any glitches, please contact our Customer

Service Office. Glitches may cause fire or explosion

caused by leaked fuel.

Warning

Tightly fastened the copper pipe union.

Otherwise, it may cause fire or explosion caused by

leaked fuel.

Nozzle adapter

Baffle plate

Nozzle chip

Ignition rod

37

1. Turn main power of boiler OFF.

2. Pick out Zuv sensor.

3. Loosen the bolt & nut of Zuv sensor eye cover.

4. Wash the smokes attached to the glass of Zuv sensor coverbottom with soft cloth cleanly.

5. Make an assembly to the original state and place Zuvsensor to the original location.

Cleaning of Zuv sensor

Warning

Don’t operate a boiler with wet hands, which maylead to electric shock.

WarningSince each part of boiler is hot directly after boiler stop, don’t operate the boiler until it cools downfully(until about 2 hours after boiler stop). You may incur some scald.In case of cleaning Zuv sensor, be sure to contact our A/S staff and clean it through following theinstruction by our staff.

Main power

Cds cell

Flame eye cover

Glass

Packing

Bolt & nut

38

1. Proceed to 「Operation / Stop」in chapter 8.

☞43page

2. Loosen air drain bolt & nut on the top of oil strainerand loosen drain plug.

The water and the impurities inside oil strainer are

drained together.

3. When the water and the impurities in the oil areremoved, fit a drain plug.

4. Open fuel V/V of oil tank.

5. Loosen air drain bolt & nut on the top of oil strainerlittle by little.

6. After checking that enly oil is leaked out, tighten airdrain bolt & nut.

Cleaning of oil strainer

Fuel V/V

Fuel V/V

Close

Open

Tighten

Tighten

Air drain bolt & nut

Drain V/V plug

Oil strainer

Note

Place a vessel so that an oil under oil strainer maynot be leaked out.

39

1. Open drain V/V of the bottom of oil tank.

2. Check if the water and the impurities are in the oil ornot.

3. Close drain V/V of the bottom of oil tank.

Cleaning of oil tank

Oil tank

Draining

CloseOpen

Note

Place a vessel so that an oil in the bottom of oil

tank may not be leaked out.

40

1. Make sure that any black smoke and white one comeout of a stack or not.

1. Follow 「operation/start」in chapter 8.

2. Make sure that an indicator of steam pressure gaugerocks extremely or displays abnormal value.

Inspection on steam pressre

WarningIn case of any abnormality in steam pressure, contactonr A/S office after stopping an operationimmediately. If doing an operation in abnormalcondition of oil pressure continuously, it may lead tosome personal accident.

Inspection on combustion

Warning

In case that black smoke and white one come out,

stop an operation immediately and contact our A/S

office. If operating a boiler in the state of abnormal

combustion, it may cause personal accident.

41

1. Proceed to 「Operation / Starting」in chapter 8.

☞43page

2. Check if a steam pressure gauge displays 1.5 to

2kg/cm2 or not.

3. Turn combustion S/W as OFF.The combustion lamp is lit off and then post purge isproceeded. (At this time, close steam V/V.)

4. Check if post purge is completed or not.(When a blower stops, post purge is completedaccordingly.)

5. Check if a feed water pump stops or not.

Blowdown method

Warning

After checking if a boiler stops or not, operate a blow. A scald and etc. may take place badly (A blow

shall be operated on the next day from the standstill of the boiler.)

Note

For blow operation, make sure that the instructions of our A/S staff shall be observed fully without fail.

WarningWhen the display of a steam pressure gauge is above2kg/cm2, do not operate a blow.Abrupt eruption of steam and hot water may cause aninjury such as a burn and etc. (When steam pressureis high, down the pressure through opening steamV/V.)

Steam pressuregauge

■`Blowdown method

42

6. Turn operation S/W as OFF.

7. Blow water tube by opening about 1/3 of blowdownV/V of boiler water tube slowly.

8. Check if blowdown is made fully or not.(Blowdown is completed fully in about 10 minutes)

9. Close blowdown V/V of water tube.

10. Turn operation S/W as ON.

Warning

Each part of a boiler is composed of high temp. part.

If contacting other part than blowdown V/V of water

tube you may bring about a burn and etc.

Do not open blowdown V/V of water tube abruptly.

A sudden eruption of hot water may cause a scald or

other injury.

Check if blow piping is fixed solidly so that it may

not be acted by reaction of a blow.

Check if the end of blow piping such as a bit and etc.

is opened safely to the safer place or not.

Note

Fix a knob of V/V during blowdown.If the knob of V/V during blowdown is changed,normal blowdown may not be made.

43

1. Turn main power of the boiler as OFF.Check if a steam pressure gauge displays 0kg/cm2 ornot. In case it does not display 0kg/cm2 wait until thevalue is displayed.

2. Close replenishing V/V.

3. Open blow V/V of feed water tank.

4. When the water does not come out, close blow V/V offeed water tank.

5. Open replenishing water V/V.In case of operating a main power, don’t operate it bywet hands, which may be the cause for electric shock.

Cleaning of feed water tank inside

WarningSince the water in feed water tank capable of recollecting condensed water is hot, do not the work untilthe water cools down fully (about 2 hours later from stop of a boiler) to protect the danger of beingburned.

Warning

In case of operating a main power, don’t operate it by

wet hands, which may be the cause for electric shock.

Close

Close

Open

Open

44

1. Turn main power of the boiler as OFF.

Check if a steam pressure gauge displays 0kg/cm2 or

not. In case it does not display 0kg/cm2, wait until the

value is displayed.

2. Check if feed water V/V and main feed water V/V areclosed or not.

3. Open air drain V/V of feed water pump.Remove the pressure within feed water piping.

4. Open a cap of feed water strainer.

Claning of feed water strainer

WarningSince the water in feed water tank capable of recollecting condensed water is hot, do not the work untilthe water cools down fully (about 2 hours later from stop of a boiler) to protect the danger of beingburned.

Warning

In case of operating a main power, don’t operate it by

wet hands, which may be the cause for electric shock.

WarningClose water supply V/V without fail. In case of abackflow of water any accident such as a scald andetc. may take place.

Close

Close

Feed water pump

Cap

Air drain V/V

Feed water strainer

NoteThe water in piping comes out when a cap of feedwater strainer is opened. In particular, in case oflong piping you had better use a bucket for a largeamout of water.

45

5. Clean a brush through picking out a filter.In case foreign materials in the gap of the filter are notremoved and in case it is deformed, you are required toreplace it with new one after consulting our A/S office.

6. Place the filter at original location of feed waterstrainer.

7. Tighten a strainer cap solidly.

8. Close air drain V/V of feed water pump.

9. When operating a boiler after cleaning the feed waterstrainer, drain an air in feed water pump according to「Using mothod of operation system / Air drain of feedwater pump」in chapter 6.

☞ t40page

Brush

Cap

Filter

Air drain V/V

Feed water pump

Close

46

Analysis of water quality

Note

Do an analysis of water quality once per four months. The city water, underwater, industrial use waterchange according to season. If neglecting the water quality analysis, it may lead to the fall of boilerefficiency and the damage of water pipe. Our company, Korea MIURA do the water quality analysisthrough introduction of modern adalysis equipments. For it, contact on A/S office freely at any time.

47

Safety V/V

Warning

Safety V/V requires a regular inspection. If neglecting it a danger such as some explosion and etc due to

the trouble of the V/V may take place.

Note

Adjust eruption pressure of safety V/V to the displayed value. In case small tolerence may take place,do not adjust it without paying a lot of attention to it.In case of sensing an abnormality, contact our A/S office.

For safety V/V inspection, please assign it to our repair & maintenance staff.

48

Ⅹ Troubleshooting

1. Set the Combustion Switch at OFF position. The buzzer stops. In this case, if you turn ON thecombustion switch without removing the cause, thebuzzer will set off again.

2. Check if the post-purge process is finished.

(If a ventilator stops, it means the post-purge isfinished.)

3. Set the operation switch at OFF position.

4. Check what the error is and remove the cause byreferring to the [Troubleshooting before RequestRepair].

Note

Error is to inform if the boiler is estimated to be dangerous for continued combustion via a buzzer and

a lamp by stopping the combustion.

If error occurs, the buzzer sets off and the error lamp will switch on.

At the same time, combustion stops automatically and post-purge is executed for about 30 seconds.

In case a buzzer sets off and the error monitoring lamp is on.

Power

Operation

Combustion

Normal Water Level

Low Water Level

Non-arrival

Power

Operation

Combustion

Normal Water Level

Low Water Level

Non-arrival

49

Warning

Please remove the cause of errors and abnormalities via the following order. Incorrect operation may

cause critical accidents.

1. Start the boiler by referring to the [Directions forOperation/Starting]. Turn ON the operation switch. The error lamp willlight on and the error will be reset. In case of same errors, the cause is concerned to bedifferent, thus, contact the Customer Service Office ofour company.

50

[ Resetting of elecronic S/W ]

Warning

In cas of working, be sure to turn main power as OFF.

In case of operating main power, don’t operate it with wet hands, which may lead to electric shock.

1. Operate 1 to 5 in 「In case a buzzer rings and a warninglamp is lit up」. ☞82page

2. Check electronic S/W in control box.

Fit in a reset button through pushing and check a settingvalue.

Fit in a reset button and check if main feed water V/V infeed water tank is opened or not.

3. Start a boiler pursuant to the starting sequence.In case same warning is generated again, stop a boilerand contact our A/S office immediately.

In case a RESET button for electronic S/W of fanmotor is protruded.

In case a RESET button for electronic S/W of feedwater pump is protruded.

Reset button

Reset button

Trip rod

NormalAbnormal

NormalAbnormal

51

[ Check on a connection terminal of electrode preservation device ]

1. Operate 1 to 5 in 「In case a buzzer rings and a warninglamp is lit up」.

☞82page

2. Pick out an electrode rubber cap at top of electrodepreservation device and check a connection terminal.Thereafter, attach the electrode rubber cap to theoriginal location.

3. Start a boiler pursuant to the starting sequence.In case same warning is generated again, stop theboiler and contact our A/S office immediately.

Connectionterminal

Electroderubber cap

Electrodepreservation

device

WarningDo the work after a boiler cools down fully.(Longer than about 2 hours after stop)Each part of boiler is composed of hot temp.materials so pay careful attention to any possibleinjury such as a burn and etc. immedidtely afterstop of boiler.

52

[ Remedy on electric leakage ]

1. Operate 1 to 5 in 「In case a buzzer rings and a warninglamp is lit up」.

☞82page

2. Turn main power as OFF.

3. Check if the water in cntrol box and its circumferenceis leaked or not and if so, wash it with dry clothcleanly.

4. Start a boiler pursuant to the starting sequence.In case same warning is generated again, stop theboiler and contact our A/S office immediately.

WarningIn case of working, be sure to turn main power asOFF.In case of operating main power, do not use wethands, which may incur an accident such as electricshock and etc.

Warning

Be sure to use dry cloth since an injury such aselectric shock and etc. may take place.

53

1. Refer to and execute the No. 1 to 3 under the title of

[In case the buzzer sets off and error lamp is on].

2. Close the valve of the oil tank.

3. Put the end of the vinyl tube, found within the airbleeding valve of the oil pump, inside the container.

4. Open the air bleeding valve of the oil pump.

5. Press the manual button of the electronic switch forburner motor within the control box to operate the oilpump. The oil mixed with air comes out from the air bleedingvalve. When all the air is bled, only the oil will comeout.

6. When all the air is fed, check if the only substance thatcomes out is oil.

7. Stop the electronic switch.

8. Close the air bleeding valve.

Directions for Air Bleeding of Oil Pump

WarningAvoid performing the operation with a wet hand.Otherwise, you may get electric shock. Do not touch the unit other than the designated area.Otherwise, you may get electric shock.

NoteDo not turn the air bleeding valve of the oil pumpmore than once. It may cause oil to spurt out.

NoteDo not turn the air bleeding valve of the oil pumpmore than once. It may cause oil to spurt out.

Open

Motor

Air Bleeding Valve

Air Bleeding Tube

Oil Outlet

Manual Button

54

XI Specifications

■`Specifications: TX Series

Item Unit TX-400(KT)TX-100K TX-200K TX-300K

Note :1. The traditional system of units should be marked with the bracket{ }.2. The rated evaporation should be calculated according to feed water temperature : 20°C.

the steam pressure should be calculated according to the design pressure.3. The fuel consumption is calculated at lower calorific value.

Lower calorific value is as follows.① Light oil : 43.1MJ/Kg {10,300Kcal/Kg}② Boiler oil : 43.4MJ/Kg {10,368Kcal/Kg}

4. The allowable errors are as follows.The boiler efficiency is in error by ±1%, the amount of combustion in error by ±3.5%.

5. The standards and specifications are allowed to be modified to improve.the quality of the product without notice.

Boiler

body

Structure

Design pressure

Hydraulic test pressure

Actual Evaporation

Steam power

Heating surface area

Boiler efficiency

Water reserve

Light oil

Boiler oil

Power supply

Total electric vol.

Weight

Width

Length

Height

Steam outlet

Feed water inlet

Fuel inlet

Bottom blowdown outlet

Safety valve outlet

Chimney diameter

Type

Ignition type

Flame detector

Combustion control

Controller

Conne-

ction

size

Burner

Fuel Usage

Electric

Dimension

Once-through boiler

87(Lower calorific value)

3Phase AC 220, 380, 440 / 60

Pressure injection

High voltage spark

Flame eye

ON - OFF control

BC5-220K (Use temperature 0~50℃)

0.5{5}

0.95{9.5}

100

0.0742{63,799}

2.9

36

7.2

7.1

340

741

1,129

1,604

20

20

15

25

32

150

1{10}

1.6{16}

MPa{kg/cm2}

MPa{kg/cm2}

kg/h

MW{kcal/h}

m2

%

ℓ

kg/h

V/Hz

kW

kg

mm

A

Φmm

200

0.1497{128,754}

4.2

300

0.2246{193,131}

4.9

400

0.2995{257,508}

4.9

1.215

550

1,052

1,425

1,936

25

25

15

25

32

250

430

859

1,334

1,901

25

25

15

25

32

250

1.515

560

1,052

1,425

1,990

25

25

15

25

32

250

28.7

28.5

55

14.4

14.3

68

0.865(Standard)/0.835(High)

21.6

21.4

55

XII Appendix

■`About Maintenance services

① this product comes with warranty. Please keep the warranty when A/S personally personally perform

test operation put some required memo on it and hand over to our customer.

② it’s one year warranty from the date of the original purchase. But some parts cannot be covered by

warranty, so please talk to A/S personal for detail information.

③After warranty period, for the maintenance, please talk to A/S office. If repairmen require for

maintenance, customer must over every expenses.

④To know more about A/S and any troubles, pleaese contact A/S office.

■`MMP provides 3 areas of security

①For prevention of any trouble, once in every 3month, MMP will make the walk around inspection.

②Boiler status will be reported to customer on print

①By warranty, boiler including pipeline and economizer will covered.

②Spare part and trip repair technical fee is free of charge

③We promise to put the maintenance to the first priority

①Mantain safety for safety device inspection

②Maintain the best performance and function of boiler

③To Extend the life of boiler, we perform water analysis and pipeline inspection

Relief ❶ inspection

Relief ❷ Warranty

Relief ❸ Maintenance

56

Chemicalname

Boiler body

: Safety V/V inspection, tublar inside inspection, furnace pressure measurement, smoke and scale

attachement condition and others.

Burner

: Exhaust gas annalysis(O₂, CO₂, CO, temp.), burner inspection, oil P/P, electronic V/V, etc.

Feed water

: Water softener, chemicals injection system, feed water pump, low water level isolation test, etc.

※Consult our A/S office for further details.

■`Use rated product of leading maker for boiler chemicals.

New TYPE combined cleaning material for a once-through boiler

KIM-800/KIS-700Boiler mate KIM/KIS mostly suitable for mproving the feed water quality of boiler is new type combinedcleaning material.(Tube cleaning material, oxygen removing material, natural film creation mix.)

For industry

KIM-800

For food

KIS-700

S/D(For industustry)

F2(For food)

New Tra-M

M1

0~30

30~60

60 more

0~30

30~60

60 more

190

170

130

260

240

180

30

30

50

1.24

1.19

1.15

1.13

1.05

When removed 200ppm

When removed 200ppm

Double water tube treating material

Standstill tube treating materia

Feed water temp(℃)

Injection temp(PPM)

Injection temp(kg/ℓ)

Remarks

KOREA MIURA CO., LTD

System control over our mationwide offices bycomputerized

Repair & control office of MIURA BOILER

Main office: 701-1,3-dong,ACE hightech city,Mullae-dong 3-ga,Yeongdeungpo-gu,Seoul TEL. 02)2671-2410 FAX. 02)2671-0019

Call the key number with no area code andrequest after-sales service. Your nearestservice center will provide quick and thoroughservice.

This manual is published on recycled paper.

Miura boiler, reliable anytime and anywhere

Miura Korea aftersales center