Buffalo CT253 Installation, Operating And Maintenance Instructions

RANGE WITH SIX OPEN BURNER AND OVEN (GAS HEATED )

INSTALLATI ON, OPERATING AND MA INT ENA NCE INSTRUCT I ONS

PRODUCTION YEAR: SERIAL NO :

1783

Fourth Way, Avonmouth, B ristol BS11 8TB

EN

Published on: 09.07.2018

1/22

2. TAB LE OF CONTENTS

SECTION

NO

1 COVER PAGE 1
2 T ABLE OF CONTENTS 2
3 INTRODUCTION 3

4 TECHNICAL DATA 4

-

5 APPLIANCE DESCRIPTION 6

6 APPLIANCE LABEL DESCRIPTIONS 7

7 SAFETY DETAILS 8-9

8 BEFORE THE INST ALLATION 10-11

NOZZLES,SETTINGS,GAS CATEGORIES AND
PRESSURES

TOPICS PAGE NO.

5

9 INSTALLATION 12-13

10 OPERA TING THE APPLIANCE 14

11 CHANGING THE INJECTOR 15-16

12 SERVICE OPERATIONS 17-18

13 CLEAN-UP AND MAINTENANCE 19-20

14 EXPLODED VIEW AND SPARE PART LIST 21

15 WARRANTY POLICY SHORTLIST 22

2/22

3. INTRODUCTION

Dear Operators,

Thank you for purchasing our appliance and for your reliance upon our company.
Our appliances are produced in compliance with international standards.
Important notice: Please read and ensure that the operators read this user’s manual in order
to achieve the desired performance for many years.

Please read and ensure that your operation personnel also reads this user’s manual
carefully before installing and using the appliance. If the appliance is operated without
reading the user’s manual, the appliance will not be covered by the warranty.

The manual containing information about installation, usage and maintenance of the
product you purchased should be read carefully. Please ensure that the gas supply
connections to the appliance are already installed by qualified personnel according to local
legislation, before the authorized service personnel arrives for the installation of the
appliance.
If you have any queries please get in touch with authorized service company by phone.

WARNING

THESE INSTRUCTIONS ONL Y APPLY IF THE COUNTRY CODE IS
ON THE DEVICE. IF THERE IS NO CODE ON THE DEVICE,
REFER TO THE TECHNICAL INSTRUCTIONS FOR ADAPTING
THE DEVICE TO THE CONDITIONS OF USE IN THAT COUNTRY.

THE PERSONNEL TO PROVIDE INSTALLATION AND
MAINTENANCE SERVICE FOR OUR APPLIANCES OPERATING
WITH GAS MUST HAVE GAS SAFETY COMMISIONING
CERTIFICATE.

SP AR E PARTS REQUIRED FOR THE SERVICE OF THE

APPLIANCES MUST BE ORIGINAL PARTS PROVIDED BY
BUFFALO OTHERWISE THE APPLIANCE WILL BE LEFT
OFF OF THE WARRANTY COVERAGE.

3/22

4.TECHNICAL DATA

PRODUCT CODE 7865.N1.90739.10

MODEL

CT253

MAIN DIMENSIONS (mm) 900x730x875

HEAT POWER (KW) (H

ΣQ

N

HEAT POWER (KW) (H

ΣQ

min

TYPE А

)

İ

)

İ

G20-21 mbar: 6x4,3(cook top)+6(oven)=31,8(max)

G31-37 mbar: 6x4 (cook top)+6(oven)=30(max)

G20-21 mbar: 6x1,43(cook top)+2(oven)=10,6(min)
G31-37 mbar: 6x1,33 (cook top)+2(oven)=10(min)

1

GAS INLET (inch) ¾″ R

OVEN TEMPERATURE(ºС) 100-250

MAXIMUM POT DIAMETER

TO BE USED ON GAS

COOKERS (cm.)

Min. AIR SUPPLY

REQUIREMENT

Natural Gas: 34-38 cm.

LPG: 32-34 cm.

2 m³/h/kW

4/22

NOZZLES,SETTINGS,GAS CATEGORIES AND PRESSURES

Country Gas Categories

BE,FR

DE,LU,PL,RO

AT,CH,CZ,DK,EE,ES,

FI,FR,GB,GR,

HU,IE,IT,LT,LV,NL,

NO,PT,RO,SE,SI,SK,

HR,TR

BE,CY,ES,FI,FR,GB,

GR,IE,MT,HR, TR

BE,CH,CY,CZ,DE,FR,

SK

Reference

Gas

I2E+ G20 20,0 2 mm 1,6 mm

I2E G20 20,0 2 mm 1,6 mm

I2H-20 G20 21 2 mm 1,6mm

I3B/P-30 G30 29(28-30) 1,3 mm

I3B/P-50 G30 50,0 1,1 mm

Reference

Pressure(mbar)

Oven Injector

Size

Gas Cooker

Injector Size

1 mm

0,85 mm

BE,CH,CY,CZ,DE,ES,

FR,GB,GR,IE,IT,LT,

PT,SI,SK,TR

BE,CH,CZ,ES,FR,GB,

GR,IE,IT,LT,NL,PL,

PT,SI,SK,HR

HU

FR,NL,RO

NL

I3+(28-30/37) G30 29,0 1,3 mm

I3P-37 G31 37,0 1,3 mm

I2HS G25.1 25,0 2,05 mm

I2L-25 G25 25,0 2,05 mm

I2EK Set 1
(Part/non­premixed) G25.3 25,0 2,05 mm

1 mm

1 mm

1,7 mm

1,7 mm

1,7 mm

5/22

5. APPLIANCE DESCRIPTION

5.1 Open burner ranges are used in kitchens of restaurants, canteens, hospitals

and in catering companies etc. for cooki ng purposes. This device is intended for
professional use only. It must be used by qualified personnel.

5.2 Before initial use of the appliance, the outer surface should be wiped with a
cloth soaked in warm water and soap.

5.3. The appliance should be located under an extraction canopy i n
accordance with DW172(2 018).

NOTE : Do not use beyond the purpose of use.
The appliance should be operated by qualified personnel knowing safety

terms and technical specifications and w ho has read the instruction
manual.

5.4 Outlook :

Gas inlet

6/22

6. APPLIANCE LABEL DESCRIPTIONS

label # 1

(LABEL TO BE USED UPON CHANGE OF GAS SYSTEM )

APPLIANCE
INFORMATION

GAS
INFORMATION
(N ATU RAL GAS )

APPLIANCE
INFORMATION

label # 2

GAS
INFORMATION
(LPG)

( SECTION TO BE USED FOR CHANGE OF GAS SYSTEM) - ( See page 14 for details)

Labels of the appliances operated with gas consists of two parts.

- Appliance information part

- Gas information part
IMPORTANT NOTE FOR TECHNICAL ST AFF

- It is detailed and is labelled according to the type of gas (natural gas – LPG) is
requested for the appliance by the customer.

- During the installation of the appliance, check out whether labelled gas type
information matches the type of gas available at customers site.

- As shown in the sample la bel above, label # 1 is attached to the appliance. Label # 2
is delivered as substitute within the pocket containing the manuals.

7/22

7. SAFETY DETAILS AND WARNING SI GNS

SAFETY DETAILS:

☞ Do not leave the dev i cein or exposed to direct sunlight.

☞ The appliance should onl y be operated under an extraction

canopy in accordance with DW172(2018).

☞ If the appliance is operate d w i th LPG , the di st ance between the
device and LPG cylinder should be minimum 50 cm.

☞ Any kind of flammable solid and liquid material ( cl oths , al cohol
and derivatives, petrochemica l product s, wooden and plasti c
materials, cutting blocks, curtai ns etc.) should nev er be held near
the appliance.

☞ FIRE HAZARD - Keep the area around the appliance clear and
free from combustible materi als. D o not keep flammable materi als
in the vicinity of the applian ce.

☞ Install the applia nce in a well-venti lated pl ace to avoid t he
creation of dangero us mixtures of unburnt g as es i n the r oom.
Please refer to the instructions before installing and operating the
appliance.

☞ Air recirculation must take in ac count the air necessary for
combustion, 2 m³/h/kW gas power, and also the “well-bei ng ” of
those working in the ki tc hen.

☞ The appliance should not be immersed in water .
☞ Do not clean the appliance with pressure jet water.

☞ This device is designed for professionaluse and it should

only be operated by trained personnel.

☞ The appliance should not be serviced by anyone else except
by the manufacture r or aut hori zed service company.

☞ In case of fire isolate the gas supply and report to management for
escalation.

8/22

7. SAFETY DETAILS AND WARNING SIGNS

☞ Oil spilled during operation must be cleaned aw ay. Otherwise this will
cause slip haz ard.

☞ In the event of gas leak isolate the gas and report to management for
escalation.

☞ All gas connections must comply with gas safe standards.

☞ Pets should not be allowed to approach the product while the device is

running. Keep your pets away from the environment where the device is
located so that the pets will not be injured from gas accidents that may
occur.

WARNING SIGNS:

☞ Hot surface. Heat resistant safety gloves r eq ui r ed.

☞ Caution. Hot surface.

☞ Before swi tc hi ng on, please remove all the production

plastic film.

☞ Gas type and pressur e warning label at the gas inl et

9/22

8. BEFORE THE INSTALLATION

AVAILABILITY OF APPROPRIATE GAS INSTALLATION FOR THE APPLIANCE TO BE

INSTALLED

8.1 Customer is responsible to ensuresuitable for installation on their premises for

appliance to be installed by gas safe certified engineer.

8.2 Installation must be carried out in compliance with applicable standards.
Manufacturer does not take any responsibili ty for any damage and err or

arising from transportation, instal lation, servi ce and user fault.

8.3 During instal lation, the following must be checked according to all applicable
law, regulation and instructions.

These instruction are only valid if the appliance is labelled with the country code. If the
country code is not present on the appliance, please refer to the technical instructions in
order to ensure that your appliance complies with the requirements in your country.

☞ Work safety and accident prevention i nstructions .
☞ Warning signs.
☞ Work fields and departments as categorised by the hygiene rules.
☞ Fire safety
☞ Fresh air supply.
☞ Chimney gas suction for the purpose of envir onmenta l protect ion.

8.4 VENTILATION AND SMOKE EXHAUSTION

1. Never place the appliance in locations where exhaustion

of smoke might blocked.

2. Sufficient ventilation and continuous fresh air supply

(door sill openings, air condition systems) must be
maintained in the location where the appliance is to be
installed. Otherwise an efficient gas burning cannot be
achieved in your appliance, or this might cause risks to
the user.

3. The appliance should only be operated under an

extraction canopy in accordance with DW172(2018).
allowing gas exhaustion to open air (to the atmosphere).

4. The appliance must be used in a well-ventilated place to

avoid the creation of dangerous mixtures of unburnt
gases in the room. Whenever possible, pre-heat only
before use.

5. Air recirculation must take in account the air necessary

for combustion, 2 m³/h/kW gas power, and also the “well­being” of those working in the kitchen.

8.5 If necessary, contact with the company that has installed the gas pipework, to obtain

required informatio n.

10/22

8. BEFORE THE INSTALLATION

8.6 PACKING

Packing materials are environment friendly and can be stored without risk, disposed of in accordance
to local authorities requirements.
Polyethylene: wrapping, instruction booklet bag, gas nozzle bag.
Polypropylene: roof packing panels, straps.
Card board: corner protectors.

The appliance is placed on the wooden pallet. A cardboard carton is placed over the unit
Put a wooden fr am e over the carton pack.It is connected with plastic straps.

8.7 UNPACKING
IMPORTANT!
Immediately check for any damage caused during transport.

Unpack, taking care not to damage the equipment.Wear protective gloves. Carefully remove the
protective film from metal surfaces and clean any traces of glue with a suitable solvent. For hidden
damage or shortages becoming apparent only after unpacking contact immediately your distrubutor for
advice. Keep all the documentation contained in the packing.

8.8Check whether the parts of the appliance are
complete and whether any damage has occurred
during the transportation.

8.9 MOVING THE APPLIANCE

☞ The appliance can be moved wi th supplementa ry suitable
handling equipment.
☞ Bearers of the handling equipment should be placed under
the appliance.
☞ If the transported distance is significant, the machine should
be moved slowly and the appliance should be fixed on pallet or
supported in order to prevent jol t.

☞ Do not hit or drop the appli an c e when moving.

8.10 Before installing the appliance remove PVC films. Be aware that static
electricity can occu r d ur in g this process.

8.11 Aft er removing PVC, clean adhesive residuals o n the appliance before use.

11/22

9. INSTALLATION (Gas safe engineer only)

9.1 The appliance must be installed on a sturdy and durable floor. Ensure surface

is level. When appliance is in position engage brakes on castors.

9.2 Ensure 20 cm. air gap from any wall or other
vertical surface . It is strongly recommended that fire
safety protection instructions are observed. It is

50

MINIMUM DISTANCE BETWEEN THE GAS CYLIND ER AND TH E APPL IAN CE SHOULD BE 50 cm.

9.3 If the appliance is operated with LPG cylinders the distance between the appliance and the
gas cy linder must be minimum 50 cm. The LPG cylinders to be used must be selected
according to the gas category and pressures in the section "NOZZLES, SETTINGS, GAS
CATEGORIES AND PRESSURES". The device can be used with 47 kg. LPG industrial
hoses. LPG gas regulator with a capacity of at least 10 kg / h should be used.
The regulator must be selected according to the gas type and pressure of the
appliance.The parts protected by the manufacturer or its representative must not be
adjusted by the installation staff. It should always be properly ventilated in and around the
gas cylinder compartment, with continuous fresh air supply and with an adequate
ventilation system to ensure that there is no unburned gas accumulation.

9.4 Authorized service personnel must check the GAS INFORMATION labelled on the appliance
to ensure that the labelled gas type and pressure data matches the type and pressure of
the gas installation available.

9.5 If the information labelled on the appliance does not match with the gas type and pressure
of the gas installation at customers site, the operations when changing the gas system
mentioned in Point 11 must be carried out in following order.

9.5A Check whether the gas installation pipe diameter at the gas inlet of the appliance complies
with the specification for gas inlet pipe diameter mentioned in TECHNICAL DATA section.
If the pipe diameter is larger than those mentioned in TECHNICAL DATA section, pipe
diameter must be decreased to desired size using a reducing coupling. If the pipe
diameter is smaller than that mentioned in TECHNICAL DATA section, the appliance
should not be connected to this gas installation since it will not operate efficiently. This
gas installation must be changed.

9.5B After making these checks authorized service personnel can install flexible gas pipe to the
gas inlet pipe of the appliance. Gas supply pipe or hose must complies with the applicable
national regulations and shall be periodically examined and amended according to
national regulations.

LPG

recommended to comply with fire protections rules.

12/22

9. INSTALLATION (Gas safe engineer only)

9.6 After making the pipe connection gas valve is opened to allow gas to flow up to the
valve. After letting gas flow in, gas leakage should be checked at gas inlet pipe connection
and valve ramp connection with soap bubble method.

The fresh air intake required for the combustion of the stoves is provided from the rear of
the appliance and through the flue holes. The air inlets of the oven are at the bottom of the
appliance. The air inlets must not be turned off for efficient and proper operation of the
appliance.

gas pressure measuring point

FIGURE A : Pressure readings at the gas inlet pipe

9.7 Check the pressure at the gas pipe as seen in the figure (Figure A ). First, remove the
manometer inlet opening plug at gas inlet pipe by unscrewing counter clockwise. To
measure the pressure connect rubber hose of the manometer to inlet opening. Open
main gas valve and operate the appliance. Check and confirm pressure reading and
shut the appliance down and remount the plug. Gas leakage is checked with soap
bubble method.

9.8 The appliance is started by carrying out the operations mentioned in point 10 in the
following order.

9.8A Gas leakage should be checked at gas valve and injector connections with soap bubble
method.

9.8B When the appliance is operated, the stability and continuity of the flame is controlled
visually.

After operating the appliance, instruct the USER about the operation and the

maintenance of appliance in order to be sure that the user is capable to operate

the appliance. Incorrect usage will harm the appliance and shorten its life of use.

Please issue gas safe certificate to confirm commissioning.

13/22

10. OPERATING THE APPLIANCE

A- COOK TOP CONTROL KNOB

B

C

Using Top burners:

Note: Pan/Pot Size-No flames should reach beyond base of pan/pot for optimum effciency.
1-Turn ‘ON’ the main gas tap.
2-Light a taper or match or have a spark producing device at hand.
3-Push and turn the selected burner gas tap(A) anti-clockwise, hold for a while (wait for 20-25
seconds, allowing the air in the gas pipes to exhaust and the gas to flow inside) and apply
the ignition source to the burner.
4-Set the height of the burner flame to the required heat. By turning the thermostat knob
clockwise, to the ‘small flame’ position, the heat is reduced to its minimum output.
5-The pots or pans in which the ingredients to be cooked are carefully placed on the pan support
and start to cook. After cooking is finished, the pot or pan is taken out of the pan support with
heat-resistant gloves.
6-To turn ‘OFF’ the cook top burner, turn the knob back to the ‘arrow’ position. (Horizontal
position).

A

D

B- OVEN IGNITER
C- OVEN CONTROL KNOB
D- HOB INDICATOR

Using The Oven:

1-Turn ‘ON’ the main gas tap.
2-Open the oven doors. Press and turn the thermostat to maximum setting.
3-Operate the IGNITER button repeatedly until the burner lights.
4-Keep the oven knob depressed for approximately 15 to 20 seconds and then release. The
burner should stay alight.
5-After preheating, the product to be cooked is placed inside the oven and cooked at intended
cooking temperature. Cooking period varies depending on the type of material.
6-After the cooking is completed, the oven door is carefully opened and the ingredients are taken
out by using an oven glove.

Note: When the oven door is opened, heat may come out and create the risk of scalding.
For this reason we recommend that the user carefully open t he oven door with a heat
resistant glove and stand back.

Turning off the appliance:

In order to shut the appliance completely down, for hob burner turn safety valve (A) off and for
oven turn thermostat adjusting valve (C) off, so that the gas flow to the hob and to the oven is
cut off.
Turning off appliance isolation gas valve is recommended to avoid any danger.

Flame control device:

If accidentally hob or oven burner flame goes off for any reason, when the appliance is on, the
system will close it self to avoid gas leakage. Cutting gas off will take maximum 60 seconds.

14/22

11. CHANGING THE INJECTOR (Gas safe engineer only)

TYPE TOT AL POWE R (kW)

NATURAL GAS LP G ( G30 50 )

CT253

G20-21 mbar: 31,8 KW

G30-37 mbar:30 KW

3,37 m ³/ h 2,48 k g/h

GAS CONSUMPTION

Note:Installation of the appliance or conversion to other gases
must only be carried out by trained gas safe registered catering
engineers.

1 1.1 Changing Burner Injectors for Open Flame Burners
1 1.2 Changing Burner Injectors for Ovens

11.3 Making Air Adjustments

Figure A: Changing Burner Injectors

for Open Flame Burners

1 1.1 Changing Burner Injectors for Open Flame Burners: ( Figure A )

- In order to change burner injectors, remove cast pan supports(CC18).

- After removing the burner caps(BR31), remove s/s hob plate, unscrew the injector

counter clockwise, using an appropria te wrench.

- Identify the injector depending on the new gas type and pressure, in the gas system
change table (NOZZLES AND SETTINGS) and find this type of injector in the reserve
injector pocket. Check the number on the injector whether it is the correct type of
injector. Ensure the injector is unobstructed.

- Mount the injec tor to injector connection, and screw clockwise tightly.

TABLE : Total power and consumption data

15/22

11. CHANGING THE INJECTOR (Gas safe engineer only)

Figure B: Changing Burner Injectors for Ovens

11.2 Changing Burner Injectors for Ovens: (Figur e B)

- I n order to change the burner injectors, open doors of the oven and remove the
base plate.

-Unscrew injector connection, then unscrew the injector clockwise with an
appropriate wrench and demount.

Identify the injector depending on the new gas type and pressure, in the gas system
change table (NOZZLES AND SETTINGS) and find this type of injector in the reserve
injector pocket. Check the number on the injector whether it is the correct type of
injector. Ensure the injector is unobstructed.

- Mount the injec tor to injector connection, and screw clockwise tightly.

- Remount the injector connection. Gas leak age is checked with soap bubble

method.

11.3 Making Air Adjustments

-Air adjustment ring should always be in the open position for all burners.

NOTE : Burner injectors for changing the gas system are delivered
with the appliance.

FINAL ACTION:

Replace LABEL#1 or LABEL#2 respectively. (Look at page 7)

16/22

12. SERVICE OPERATIONS (Gas safe engineer only)

Thermocouple connec tion t o gas
valve is loose or too tight.

Check the t herm ocouple t i ghtnes s. Tight en t he
thermocoupl e t o 2.5 N-m of torque. O r loosen if
necessary.

Fault y t herm ocouple.

Replace thermocouple.

Fault

Possible Cause

Remedy

Main B urner
will not ight.

No gas s uppl y or gas i solation
va lve is OF F.

Ens ure that gas tanks are not em pty , and gas
is ol at i on valve is turned ON.

Insuffici ent gas s uppl y pres sure.

Adjust the gas supply pres sure to requi red
standard. Refer to gas pres sure requirement
sect i on on t hi s manual .

Clogged or bloc ked burner
injector.

Clean the burner i nject or or replace i t i f
necessary.

Fault y or brok en gas valve.

Replace the gas valve.

Main burner s huts -off

after a few minut es of

operation.

Fault y s afet y gas valve.

Replace safety gas valve.

Flam e does not c om e
out from s om e of t he

Burner flame colour i s
yellow.
W rong gas ty pe used.

Check the gas ty pe used, change t o t he correc t
gas ty pe.

W rong orifice inst al l ed.

Check the orifice inst al l ed. Repl ace it wi t h correc t
orific e for the gas t ype us ed.

Air shut ter is partial l y or fully
cl osed. Not enough combust i on

Adjust the air shut t er of t he burner t o el im i nate
the yell ow flame.

Clean the burner or replace it if nec ess ary.

Holes are clogged wi t h carbon or
food debris.

Burner flame i s t oo
high or too l ow.

Pres sure is t oo hi gh or t oo l ow.

Adjust press ure t o st andard. See st andard
pressure s et tings.

Burner inj ect or us ed i s not
appropriate for the gas t ype us ed.

Change the burner inj ec tor t o m at ch t he gas t ype
used.

Incorrect gas ty pe used.

Change gas t ype us ed based on t he product 's
rating l abel .

Fault y s afet y gas valve.

Replace safety gas valve.

Lifting of flames or
Blowi ng F l am es

Too much prim ary air.

Adjust the air shut t er t o el i m i nate li ft ing of flames.

W rong s i ze of inject or orifice
installed.

Check the orifice s i ze of the i nj ec tor inst al l ed.
Replace i nj ect or i f nec es sary .

Yell ow t i ppi ng of
flames

Lack of primary air due incorrec t
air s hut ter adiust m ent .

Open air s hut ters to get rid of y el l ow flame.

Lint and dus t may have block ed
primary ai r openi ngs or have

a. Clean and re-adj us t t he burners ' ai r s hutt er.
b. Replace t he burners i f nec ess ary.

The burner orifice/ i nj ec tor mi ght
have spun out of line.

Check and re-al i gn t he i nj ect or t o the burner.

Block ed or clogged i nj ect or
orrifice

a. Clean and clean the inj ect or orifice.
b. Replace it if nec ess ary.

12.1 TECHNICAL TROUBLESHOOTING GUIDE:

17/22

Replac e t he gas regulator or gas m et er.
Injector's ori fice is c l ogged or
bloc ked by dust or di rt .

Clean the i nj ect or's ori fice or replac e i t as
necessary.

Replac e t he gas valve.

Gas press ure i s t oo l ow.

Adj us t t he gas s uppl y pres sure t o requi red
standard.

Fault y or c l ogged burner.

Adj us t t he ai r shut t er of t he burner t o m i ni m i z e
primary air i nput .

Adj us t t he gas s uppl y pres sure t o requi red
standard.

Float i ng flam es
Flam e rol l-out.

Poor venting. F l ueway s are
bloc ked by soot or dust .

Burners are clogged or
blocked.

W rong inj ect or ori fic e si ze
installed.

Fault y or c l ogged burner.

Fluct uat i ng flam es

Unst eady gas pres sure due to
faulty gas press ure regulator or
gas m eter.

Ext i nc tion Pop or
Flashbac k during
extinction

Too much prim ary air.

Gas press ure i s t oo l ow.

Poor venting. F l ueway s are
bloc ked by soot or dust .

Check t he orifice s i ze of the i nj ect or i nst al led.
Replac e it if nec essary .

Clean the burner or replace it if nec essary .

Clean the burner or replace it if nec essary .

Operated from cold st art . Warm
up stage.

Al low the appli ance t o heat up.

Fault

Possible Ca use

Remedy

Flashback

Too much prim ary air.

Adj us t t he ai r shut t er of t he burner t o m i ni m i z e
primary air i nput .

W rong inj ect or ori fic e si ze
installed.

Check t he orifice s i ze of the i nj ect or i nst al led.
Replac e inj ect or i f nec ess ary.

If flas hback oc curs when t he
burner gas valve is i n an OF F
posi tion. The gas valve is
probably l eaking.

Check and c l ean t he flueways .

Burners are clogged or
blocked.

Clean the burners or replac e them as
necessary.

Operated from cold st art . Warm
up stage.

Al low the appli ance t o heat up.

Clean the burners or replac e them as
necessary.

Check and c l ean t he flueways .

Pi ez o i gni ter won't
ignite

Fault y i gni t er wire.

Replac e t he F DS (Fl am e Device S ys tem).

Fault y pi ezo igni t er.

Replac e t he pi ezo igni ter.

12. SERVICE OPERATIONS (Gas safe engineer only)

18/22

13. CLEAN-UP AND MAINTENANCE

CLEAN-UP:
Before initial and consequent uses of the appliances, the s/s hob plate should be
drained. Outer surface should be wiped with a sponge and liquid de tergent.
Do not use CHEMICAL CLEANING AGENTS like hydrochloric acid etc. during cleaning.

MAINTENANCE :

Periodic maintenance should be carried out by technical service personnel. Depending on
using frequency, maintenance period should at most 6 months. Client to retain copies of gas
safe certificate.
Please follow the instructions below:

a. Injectors: Injector opening should be completely cleaned.
b. Air adjustment ring: It should be clean and not obstructed. Air mixer should always be set
by authorized technical service.
c. Gas burner: Gas passing pipes and openings should be clean and not obstructed.
d. The parts dismantled during the clean-up should be installed by the technical service
personnel and after the installation gas leakage should be checked with soap bubble method.

1. Gas Leakage Checks

1.1. Open main gas valve.

1.2. Check flexible pipe and gas inlet pipe connections and valve ramp connections
for gas leakage.

1.3. Start the appliance.

1.4. At gas pipe connection to the valve and burner, at gas pipe connection to the burner and at

injector connection to the gas pipe and burner gas pipe connection

Check for gas leakage.

2. Injectors

2.1. Identify the gas type by referring to the label on the appliance.

2.2. Remove the burner injectors using an appropriate wrench
referring to the numbers given on them check whether they are suitable for that type of gas
(NOZZLES AND SETTINGS)

2.3. Check whether the injector is clogged.

2.4. Remount controlled injectors back.

2.5. Check for gas leakage with soap bubble method..

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13. CLEAN-UP AND MAINTENANCE

3. Pressure Control

3.1. Connect rubber hose of the manometer to the manometer inlet opening.

3.2. Open main gas valve.

3.3. Start the appliance.

3.4. Read pressure gauge at the manometer.

3.5. When operating the appliance at lowest power level, read pressure gauge at the manometer
(minimum power checks)

3.7. Stop the appliance.

3.8. Remove the rubber hose at the manometer, mount the manometer of the valve or the
manometer of the injector connection manometer inlet opening using an appropriate wrench.

3.9. When the appliance is operated, check for gas leakage at these connection points
with soap bubble method.

4. Flame Control Device

4.1. Start the appliance.

4.2. Measure the time elapsing after the hob burner or oven burner is ignited with a stopwatch,
which corresponds to the time for the probe to detect the heat and to allow continuous gas
flow. This time should be maximum 20 seconds.

4.3. Close the valve. While the flame control probe heats up, open the valve and you will hear the
sound of a click which comes from gas valve. This time should last maximum for 60 seconds.

5. Igniter

5.1. Open main gas valve.

5.2. Ignite the oven burner with the igniter, for appliance types with igniters. If ignition does not
occur. See point 12. 1 Troubleshooting Table.

5.3. Check whether the burner flame can easily ignite the burner, for appliance types with oven
burner . If igniting does not occur, see point 12. 1Troubleshooting Table.

6. Air Adjustment

6.1. Open main gas valve.

6.2. Start the appliance.

6.3. Unscrew air adjustment ring to set the burner air adjustment distance depending on the type
of gas used referring to table(NOZZLES AND SETTINGS) , and then the ring is screwed and
fixed at that position.

6.4. Start the appliance and monitor the stability and continuity of the flame.

7. Oven Thermostat

7.1. Open main gas valve.

7.2. Start the appliance.

7.3. Set the thermostat adjustment valve to the minimum temperature level.

7.4. Normal thermostat probe should cut gas flow when set temperature level
is detected. If normal thermostat probe cannot detect the heat and does not cut
gas flow, the thermostat must be damaged. It must be replaced.

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14. EXPLODED VIEW AND SPARE PART LIST

Description

CASTOR

CAST

SIDE HANGER LEFT/RIGHT

OVEN SHELF

PAN SUPPORT 285*565 MOD.

MAGNET Q25*5*5 NEODIUM

DOOR HANDLE

OVEN DOOR SEAL

THERMOSTATIC GAS VALVE FOR OVEN
COPRECI MT 22300

OVEN BURNER 35CM

PIEZO IGNITER IRV

COVER FOR PIEZO IGNITER

T

WIRED SPARK PLUG M OZ .KB.10210

GAS VALVE FOR OPEN BURNERS TYPE 16

OPEN BURNER CAP

OPEN BURNER SPLITTER

OPEN BURNER BASE

OPEN BURNER VENTURI

T

NOZZLE M8*075

NOZZLE M8*075

NOZZLE M8*075

NOZZLE M8*075

KNOB FOR OPEN BURNERS Ø8 MM.(SET)

KNOB FOR OVEN Ø6 MM.(SET)

DOOR HINGE BOTTOM LEFT

DOOR HINGE BOTTOM RIGHT

DOOR HINGE UP LEFT

DOOR HINGE UP RIGHT

OVEN BASE PLATE

COOKER RING FLAME REDUCER

Product Description: RANGE
COOKERS Model:CT253

Code

6270.00100.28

6270.00100.29

6260.00111.17

6260.00111.16

6260.00058.92

6232.00004.15

2865.Z30.GR009.06

6020.00003.01

6267.00025.16

6267.00002.682

6267.00029.05

6226.00011.20

6267.00024.15

6267.00031.27

6267.00005.03

6267.00001.251

6267.00001.252

6267.00001.253

6267.00001.254

6267.00024.05

6267.M8075.100

6267.M8075.130

6267.M8075.160

6267.M8075.200

6260.GR00015.40

6260.GR00015.44

2865.Z20.00730056.M.25

2865.Z20.00730056.R.25

2876.N20.00570034.M.25

2876.N20.00570034.R.25

2865.Z20.07980594.7.10

2865.Z20.01830183.7.15

: Qty. Unit Pos.No

3302 PUR 100 2 pcs. 4

OR WITH BRAKE 3302 PUR 100 TBF 2 pcs. 5

HERMOCOUPLE FOR OVEN 8/1-SOCKET 1500 MM. 1 pcs. TL2

HERMOCOUPLE FOR OPEN BURNER 8/1*8/1 L600MM ERTA OZM 13 M.ÖZ.10620 6 pcs. TL1

-Ø1,00 MM.OPEN BURNER(LPG) 6 pcs. BN1

-Ø1,30 MM.OVEN BURNER(LPG) 1 pcs. BN2

-Ø1,60 MM.OPEN BURNER(NG) 6 pcs. BN1

-Ø2,00 MM.OVEN BURNER(NG) 1 pcs. BN2

2 pcs. CC16
2 pcs. CC17
3 pcs. CC18
2 pcs. MGT1
2 pcs. HND15
1 pcs. DS5

1 pcs. GV13
1 pcs. BR2
1 pcs. PI8
1 pcs. 15

1 pcs. PI2
6 pcs. GV1
6 pcs. 11
6 pcs. 12
6 pcs. 13
6 pcs. 14

6 pcs. KB8
1 pcs. KB6
1 pcs. 7
1 pcs. 8
1 pcs. 6
1 pcs. 9
1 pcs. BP1
1 pcs. 10

Note1: THE SETTINGS OF SPARE PARTS TO BE SUPPLIED FROM THE MANUFACTURER OR THE
MANUFACTURER'S REPRESENTATIVE MUST NOT BE CHANGED.

Note2: SPARE PARTS REQUIRED FOR THE SERVICE OF APPLIANCES MUST BE ORIGINAL PARTS PROVIDED BY
BUFFALO OTHERWISE THE APPLIANCE WILL BE LEFT OFF OF THE WARRANTY COVERAGE.

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15. WARRANTY POLICY SHORTLIST

IMPORTANT INFORMATION

WARRANTY POLICY SHORTLIST
Warranty does not cover:

- correcting faults caused by incorrect installation of a product

- where an engineer cannot gain access to a site or a product

- repeat commission visit s

- replacement of any parts where damage has been caused by misuse

- engineer waiting time will be chargeable

- routine maintenance and cleaning

- gas conversions (e.g. natural to propane gas)

- gas, water and electrical supply external to unit

- consumables replacement (oven door seal, thermocouple)

- call-outs charges where no fault found with when product has been reported faulty

- re-setting or adjustment of thermostats when unit is operating to specification

- lubrication and adjustment of door catches

- cleaning and maintenance:

• cleaning of burner jets

• poor combustion caused by lack of clean of cleaning

• lubrication of moving parts

• lubrication of gas cocks

• correction of gas pressure to appliance

• corrosion caused by use of chemical cleaners

Note: not suitable for household use nor mobile catering units.

22/22