YOKOI KIKAI KOSAKUSHO CB-1 User manual

HG78040E
INSTRUCTION MANUAL
FOR
CUP FLAME GAS BURNER
TYPE CB
YOKOI KIKAI KOSAKUSHO CO., LTD.
2720-1, OBORAGUCHI, NAKASHIDAMI
MORIYAMA-KU, NAGOYA 463, JAPAN
TEL: [phone] FAX: [phone]

TABLE OF CONTENTS
1. Inspection of Product and Accessories, and Outline and Specifications of Product 1
2. Installation 2
3. Piping 2
4. Operation 4
5. Inspection (Nozzle, Burner Tiles) 5
6. Warning Plate 6
7. Troubleshooting 7
8. Structual Drawing 8

- 1 -
Thank you for your selection of Cup Flame Gas Burner Type CB. Please carefully read
this instruction manual in order for you to be fully satisfied with the performance of this
burner and to secure the safety in operation, maintenance and inspection. Also, please be
sure to deliver this instruction manual to the end user, as well as to the constructor.
1. Inspection of Product and Accessories, and Outline and
Specifications of Product
Inspection:
Check to confirm whether or not the product is exactly in accordance with your
order by referring to the nameplate and the specification table given below. Also
check for damage and other irregularities caused by and during transportation.
Outline:
Perfect combustion on the burner tile surface allows proximate
heating. Heat, emitted from the burner tile surface, has a
high emissivity, so the heat is used for heating materials. The
burner itself generates and emits heat. It has the merits of
both electric furnace and gas furnace.

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Specifications:
Combustion capacity Connection caliber (Rc) Mass
Model kW (kg)
Air Gas
CB-1 5.8 7
CB-2 11.6 1 1/2
CB-3 23.0 14
CB- 4 35.0
●Reference pressure:
Gas : 2-10 kPa
Air : 6 kPa
2. Installation
(1) Back up the outside surfaces, particularly the bottom surface, of the burner tiles
with refractory bricks, castable refractory or the like to prevent the burner tiles
from dropping.
(2) In installing the burner to the furnace body, fill up the clearance between the
burner mount of the furnace and the burner tiles with refractory mortar and fix the
burner to the furnace.
3. Piping
(1) Direct good care to the inside of the pipe not to leave seal tape fractions, bond,
cutting chips, etc. there which may cause malfunction of the solenoid valve,
governor, valve, etc.
(2) In connecting the pipes, provide pipe support in proper positions to prevent the
application of any excess force.

- 3 -
Before installing, trial- operating, maintaining or inspecting this burner,please learn the inside of this burner,
infor
mation of safety and other matless to be attended by reading this instruction manual and all of attached
documents.
The rank of the matters .to be attended is classifie to "Top danger"
"Danger "and "Caution" in this instruction manual.
In case of wrong perating, it is predicted that
serious dangerous situation will happen and the
operator or other people.
May die or may be seriously injured.
In case of wrong operating,it is predicted that
dangerous situation will happen and operator or
other people may die or may be seriously injured.
In case of wrong operating, it is predicted that
dangerous situation will happen and the opertor
or other people will be injured or only material
described.
NOTE, Even the matters classified to CAUTION have a possibility of causing serious results.
Then,never fail to abide by matters discaribed.
Meaning of the mark Sample
This is to tell that there is indication to in-
strut coml)ulsorilY your action.
ontents of the instruction must be described
COMPULSON definitely nearly. never fuel to do
This is to tell the prohibitted action.
Specifically J)rohibitted action are discribed.
TOUCH
PROHIBITION PROHIBITED
This is to tell that three is a thing to be at attended.
The specifically attended thing is described nerrily.
described.
CAUTION HIGH TEMIPE
RATURE

- 4 -
Read without foil
Never foil to exhaust the air in the farnace (pr-purge) before igniting.
Repeated ignitions may cause explosion due to the gas stagnated in the
furnace. Please install safety devices like a flame supper visor.
Never fail to cut the electricity of transformer when you take off the
ignition plug in order to i check the spark of it.
ELECTRIC SHOCK
CAUTION
Never fail to take off the site hole when igniting or firinf the burner.
※flame in the furnace may blow out.
Never touch the mounting plate of the burner and fitting parts of the pilot
burner. These area are high temperature when the burner is burning.
TOUCHING
PROHIBITED
1. Do not use the attached gasket for sering this burner.
2. Put the replaced old gaskets pouch and thrae'away therm according to the waste disposal
regulation or the waste cleaning regulation.
Never burn up them.

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5. Operation
Preparing
ACheck to confirm that all the gas cocks have been closed.
BCheck for in-pipe gas leakage with air or nitrogen.
CCheck to confirm that each component unit of the air and gas lines are in normal
operation.
DCheck to confirm that gas is being supplied under the specified pressure and that
the inside of the pipe has been subjected to replacement purge.
EStart the blower, and check to confirm that the outlet pressure is at the specified
pressure level.
FSet the pressure to the pressure in the maximum combustion (6kPa) and to the
pressure of the minimum combustion (0.1-0.5kPa) by using the damper.
GFully open the control damper, and air-purge the inside of the furnace. (Use
approx. 3 times as much as the furnace volume as the reference volume of
air-purge.)
HSet the control damper to the position for the minimum combustion.
Igniting
ICheck to confirm that the cock, solenoid valve and limiting valve located
immediately before the burner have fully been closed.
JIgnite the pilot burner by pressing the ignition push button. (Be sure to check to
confirm visually or by using a flame detector that the pilot burner has been
ignited.)
KFully open the cock and solenoid valve located immediately before the burner,
slowly open the limiting valve, and check to confirm that the main burner has
exactly been ignited.

- 6 -
Adjusting
LRead the air quantity referring to the burner air quantity characteristic table
(burner PQ characteristic table).
MCalculate the necessary gas quantity, and adjust the gas quantity by using an
orifice flow meter (MO) or other flow meter and manipulating the limiting valve
until the specified excess air ratio is obtained.
NWhen the equalizing valve method is used, slowly open the control damper to the
position for the maximum combustion while checking the combustion state, and
check to confirm the flowrates of gas and air.
OWhen a safety circuit has been incorporated into the flame detector, also check to
conform the flame current value.
PAfter setting the excess air ratio, return the control damper to the position for the
minimum combustion.
QWhen the control motor is used, joint the control damper to the specified position.
Extinguishing
RFully close the cock and solenoid valve located immediately before the burner,
and check to confirm that the fire has been extinguished.
※Stop the combustion blower after the in-furnace temperature lowers to below 500
℃to protect the nozzle.
6. Inspection (Nozzle, Burner Tiles)
※Inspection must be made after the furnace has sufficiently been cooled. In
inspecting, be sure to wear heat insulating gloves and other protective gear.
1 Check to confirm that the combustion blower, as well as the shut-off valve and the
solenoid valves, are in the OFF position.
2 Loosen the union, etc. of the gas pipe.
3 Loosen the hexagon nuts setting the air body ③and the gas body ④.

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4 Firmly hold the gas body ④and slowly pull out the gas nozzle ⑥of the gas
pipe ⑦.
5 Remove the union or flange of the air pipe.
6 Loosen the hexagon nuts setting the burner plate Band the air body ③.
7 Remove the air body ③, and remove the air nozzle ⑤set in the burner plate B.
8 In replacing the gas nozzle ⑥by a new gas nozzle, remove the old gas nozzle
⑥by applying a pipe wrench to the gas pipe ⑦and a monkey wrench to the
gas nozzle ⑥.
9 Inspect the inner surface of the burner tiles. If the burner tiles are damaged, as it
may often affect combustion, contact us for instructions.
10 Reassemble the burner by reversing the order of the above steps.
※Inspect and clean the burner and its accessories from time to time according to the
operational conditions.
7. Warning Plate
When the installation construction has been completed, check to confirm that the
warning plate shown below is firmly attached to the burner body. If the warning
plate is lost, immediately contact our sales department for instructions.

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8. Troubleshooting
NO Do not ignite.
NO Air Inspect the blower and each
Gas supply and air NO component unit of the air line.
supply are normal? Gas Inspect each component unit
the gas line
YES
The pilot burner NO Inspect the pilot burner, and
has ignited? adjust it.
YES
The sequence is in NO Inspect the sequence, the
normal operation? electric wire, etc.
YES
The burner nozzle YES Inspect the burner nozzle.
is clogged?
※Before inspecting the burner and its peripheral
Flame fails? units, carefully read the instruction manual
attached to each equipment.
YES
Inspect the following items:
AAre the ultravision frame rod and
the protect relay are in normal
operation?
BIs there a heavy fluctuation in air
pressure and gas pressure?
※If there is any questions, contact our sale department.

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Structual Drawing
NO. Parts Name Quan. Note
1 Burner Tile 1
2 Burner Plate 1
3 Air Body 1
4 Gas Body 1
5 Air Nozzle 1
6 Gas Nozzle 1
7 Gas Pipe 1
8 Bolt M8 4
9 Bolt M6 4
10 Plug R 1/4 2
89
1 2 34
56710 10