JLBIGH753
Gas hob
Instruction manual
GB
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z
Unstable or misshapen pans should not
be used on the hob as unstable pans can
cause an accident by tipping or spillage.
Environmental
Information
z
z
z
Never leave the hob unattended when
cooking with oil and fats.
z
After installation, please dispose of the
packaging with due regard to safety and
the environment.
Never use plastic or aluminium foil dishes
on the hob.
z
When disposing of an old appliance, make
it unusable, by cutting off the cable.
Perishable food, plastic items and aerosols
may be affected by heat and should not
be stored above or below the hob unit.
z
The symbol
on the product or on its
z
This appliance is not connected to a
combustion products evacuation device.
It must be installed and connected in
accordance with current installation
regulations. Particular attention shall be
given to the relevant requirements
regarding ventilation.
packaging indicates that this product may
not be treated as household waste. Instead
it shall be handed over to the applicable
collection point for the recycling of
electrical and electronic equipment. By
ensuring this product is disposed of
correctly, you will help prevent potential
negative consequences for the
environment and human health, which
could otherwise be caused by
inappropriate waste handling of this
product. For more detailed information
about recycling of this product, please
contact your local city office, your
household waste disposal service or the
shop where you purchased the product.
z
Ensure a good ventilation around the
appliance. A poor air supply could cause
lack of oxygen.
Maintenance and
Cleaning
z
For cleaning, the appliance must be
switched off and cooled down.
z
For safety reasons, the cleaning of the
appliance with steam jet or high pressure
cleaning equipment is not permitted.
Service
z
This hob should only be repaired or
serviced by an authorised Service Engineer
and only genuine approved spare parts
should be used.
These instructions are only valid for countries whose identification symbols are shown in the
cover of this instruction booklet and on the appliance itself.
Keep this instruction book for future reference and ensure it is passed on to
any new owner.
3
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Contents
Important Safety Information ............ 2
Description of the Hob ................................ 5
Instructions for the Installer ............. 6
Installation ....................................................... 6
Gas Connection ............................................. 6
Engineer technical data ................................ 7
Electrical Connections .................................. 8
Wiring diagram .............................................. 9
Fault Finding.................................................. 10
Commissioning ............................................. 12
Conversion from Natural Gas to LPG .... 13
Building In...................................................... 14
Fitting the Hob into theWorktop ............ 15
Important safety requirements .................. 16
Instructions for the User................... 1 8
Operation ...................................................... 18
Cleaning the hob ......................................... 20
Something NotWorking? ........................... 22
Repairs -After Sales Service ...................... 23
This appliance complies with the
following E.E.C. Directives:
Guide
to
Use
the
instructions
The following symbols will be found in the text
to guide you throughout the Instructions:
*
*
*
2006/95
(LowVoltageDirective);
2004/108 (Electromagnetical
Compatibility Directive);
90/396 (Gas Appliances),
and subsequent modifications.
Safety Instructions
Step by step instructions
for an operation
)
Hints and Tips
John Lewis Partnership
171Victoria Street
Environmental
information
London SW1E 5NN
4
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Description of the Hob
2
2
3
4
5
1
6
7
8
9
10
1 . Hob Top
2 . Semi-rapid Burner
3 . Ultra-rapid Burner (Triple Crown)
4 . Rapid Burner
5 . Auxiliary Burner
6 . Control knob for front left burner (semi-rapid)
7 . Control knob for back left burner (semi-rapid)
8 . Control knob for central burner (ultra-rapid)
9 . Control knob for back right burner (rapid)
10.Control knob for front right burner (auxiliary)
5
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Instructions for the Installer
Installation
IMPORTANT: This hob must be
installed according to the instruction
supplied, and by qualified and
competent personnel to the relevant
National Standards.
Any gas installation must be carried
out by a GAS SAFE REGISTER installer.
The manufacturer will not accept liability,
should the above instructions or any of the
other safety instructions incorporated in this
book be ignored.
On the end of the shaft, which includes the
G 1/2" threaded elbow, adjustment is fixed
so that the washer is fitted between the
components as shown in the diagram. Screw
the parts together without using excessive
force.
A) End of shaft with nut
B) Washer
C) Elbow
It is important to install the elbow
correctly,with the shoulder on the end
of the thread, fitted to the hob
connecting pipe.
Gas Connection
Failure to ensure the correct assembly
will cause leakage of gas.
Connection to the gas supply should be with
either rigid or semi-rigid pipe, i.e. steel or
copper.
The connection should be suitable for
connecting to R 1/2” (1/2 BSP male thread).
When the final connection has been made, it
is essential that a thorough leak test is carried
out on the hob and installation.
Ensure that the main connection pipe does
not exert any strain on the hob.
When the hob is first
installed
Once the hob has been installed, it is
important to remove any protective
materials, which were put on in the
factory. The manufacturer will not
accept liability, should the above
instructions or any of the other safety
instructions incorporated in this book
be ignored.
6
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O
V
E
R
A
L
L
D
I
M
E
N
S
I
O
N
S
Engineer technical data
HEATING ELEMENTS RATING
Width:
Depth:
744 mm
510 mm
Rear Left Burner
(semi rapid)
2.0 kW
(6826 BTU/HR)
Front Left Burner
(semi rapid)
2.0 kW
(6826 BTU/HR)
DIMENSIONS OF THE HOB CAVITY
Width:
Depth:
560 mm
480 mm
Central Burner
(ultra rapid)
Rear Right Burner
(rapid)
4.0 kW
(13652 BTU/HR)
3.0 kW
(10239 BTU/HR)
SUPPLY CONNECTIONS
Gas:
Front Right Burner
(auxiliary)
1.0 kW
(3413 BTU/HR)
R 1/2 inch (1/2 inch male) Rear right hand
corner
Electric:
230 V~ 50 Hz supply, 3 core flexible cable
with non rewireable plug fitted with a 3
amp cartridge fuse.
Burner
Dia. Tap
By-pass
1/100 mm
Auxiliary
Semi-rapid
Rapid
28
32
42
56
APPLIANCE CLASS
3
APPLIANCE CATEGORY
II2H3+
Ultra-rapid
Aeration adjustment none
GAS SUPPLY
G20 (2H) 20 mbar
BURNER
RAPID
SEMI-RAPID AUXILIARY ULTRA RAPID
TRIPLE CROWN
TYPE OF GAS
POSITION
MAX MIN MAX MIN MAX MIN
MAX MIN
NOMINALTHERMAL
POWER
kW
3.0
0.75
2.0
0.45
1.0
0.33
4.0
1.2
NATURAL GAS
20 mbar
NOMINALFLOW
RATE
m3/h 0.286 0.057 0.190 0.038 0.095 0.028
119 Adjust. 96 Adjust. 70 Adjust.
0.381
146
0.114
VALUE =
37.78 MJ/m3
Ws - 50.7 MJ/ m
NOZZLEREFERENCE
1/100mm
Adjust.
3
NOMINALTHERMAL
POWER
LPG GAS
28-30/37 mbar
VALUE =
kW
2.8
0.75
2.0
0.45
1.0
0.33
4.0
1.2
NOMINALFLOW
RATE
g/h
204 43.5
145
71
29
32
73
50
21,5
28
291
98
87
56
49.92 MJ/Kg
NOZZLEREFERENCE
1/100mm
86
42
7
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Electrical Connections
THIS HOB MUST BE EARTHED.
Green andYellow - Earth
- Neutral
- Live
Blue
Brown
Any electrical work required to install
this hob should be carried out by a
qualified electrician or competent
person, in accordance with the current
regulations.
— Connect the green and yellow
(earth) wire to the terminal in the
plug which is marked with the letter
)
Electrical Requirements
'E' or the earth symbol
coloured green and yellow.
or
Any permanent electrical installation must
comply with the latest I.E.E. Regulations and
local Electricity Board regulations. For your
own safety this should be undertaken by a
qualified electrician, e.g. your local Electricity
Board, or a contractor who is on the roll of
the National Inspection Council for Electrical
Installation Contracting (NICEIC).
— Connect the blue (neutral) wire to
the terminal in the plug which is
marked with the letter 'N' or
coloured black.
— Connect the brown (live) wire to
the terminal in the plug which is
marked with the letter 'L' or
coloured red.
Electrical Connections
Thishobisdesignedtobeconnectedtoa230
V 50 Hz AC electrical supply.
Beforeswitchingon,makesuretheelectricity
supply voltage is the same as that indicated
on the hob rating plate. The rating plate is
located on the bottom of the hob. A copy is
attached on the back cover of this book.
Upon completion there must be no cut, or
stray strands of wire present and the cable
clamp must be secure over the outer sheath.
A cut off plug inserted into a 13
amp socket is a serious safety
(shock) hazard. Ensure that the
cut off plug is disposed of safely.
Permanent Connection
The hob is supplied with a 3 core flexible
supply cables.
In the case of a permanent connection, it is
necessary that you install a double pole switch
between the hob and the electricity supply
(mains), with a minimum gap of 3 mm between
the switch contacts and of a type suitable for
the required load in compliance with the
current electric regulations.
This has to be provided with a proper plug,
able to support the load marked on the
identification plate.To connect the plug to the
cable, follow the recommendation given in
diagram aside. The plug has to be fitted in a
proper socket.
The switch must not break the yellow and
green earth cable at any point.
In the event of having to change the fuse, a
3amp ASTA approved (BS 1362) fuse must
be used.
Should the plug need to be replaced for any
reason, the wires in the mains lead are
coloured in accordance with the following
code:
Ensure that the hob supply cable
does not come into contact with
surfaces with temperatures
higher than 50 deg. C.
8
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Supply cable replacement
The cable used to connect the hob to the
electrical supply must comply to the
specifications given below.
Min. size Cable/flex
0.75 mm2
C
a
b
l
e
/
f
l
e
x
t
y
p
e
F
u
s
e
H05 V2V2-F (T90)
3 A
The manufacturer declines any liability
should these safety measures not be
observed.
Neutral
Earth (yellow/green)
Wiring diagram
9
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Fault Finding
Preliminary Electrical
Systems Check
Blue
Brown
Green
START
Isolate appliance
and carry out:
A: Earth Continuity
check.
Blue
Green
Brown
Electricity supply
should now be
satisfactory.
Carry out:
B: Insulation
check.
YES
NO
A. EARTH CONTINUITY CHECK
Appliance must be electrically disconnected -
meter set on W (Ohms) x 1 scale and adjust
zero if necessary.
Has inlet fuse blown?
NO
a) Test leads from any appliance earth point to
earth pin on plug. Resistance should be less than
0.1W (Ohm),check all earth wires for continuity
and all contacts clean and tight.
YES
B. INSULATION CHECK
Appliance electrically disconnected, all switches
ON.
Inlet wiring
faulty.
Rectify any
fault.
a) meter set onW (Ohms) x 1 scale.
leads from L to N in appliance terminal block. If
meter reads «0» then there is a short circuit.
Test
b) meter set onW (Ohm) x 100 scale.
Repeat test with leads from L to E. If meter reads
less than ¥ (infinity) there is a fault.
NOTE - Should it be found that the fuse has
failed but no fault is indicated - a detailed
continuity check (i.e. by disconnecting and
checking each component) is required to trace
the faulty component.
Isolate appliance and
carry out:
B: Insulation check.
Rectify any fault
It is possible that a fault could occur as a result
of local burning/arcing but no fault could be
found under test. However a detailed visual
inspection should reveal evidence of burning
around the fault.
including replacing
fuses as necessary.
10
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Ignition System / Gas
Ignition
YES
Check gas supply at
burner
Ignitor does not spark
NO
Check plug top fuse and
replace if necessary
Light burner manually
Check polarity and earth
continuity of supply point
Check by pass simmer
adjusted
Check fitting
of burners
Check position of the
electrode
Check earth continuity
of appliance
Check continuity from the tip of
each electrode to the terminals 1
to 4 on the ignitor unit
Check continuity from 'N' on the
mains connector block and "O" on
the ignitor unit
Check continuity from 'L' on the
mains connector block and the
taps ignition switches
Check for breaks in the
insulation of the HT leads
Check continuity from ignition
switches connector to ignitor unit
Change the ignitor unit
11
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Commissioning
When the hob has been fully installed it will
be necessary to check the minimum flame
setting.
To do this, follow the procedure below.
z
z
Turn the gas tap to the MAX position and
ignite.
Set the gas tap to the MIN flame position
then turn the control knob from MIN to
MAX several times. If the flame is unstable
or is extinguished follow the procedure
below.
Procedure:
1) Re-ignite the burner and set to MIN.
)
2) Remove the control knob.
3) To adjust, use a thin bladed
screwdriver and turn the
adjustment screw (see diagram)
until the flame is steady and does
not extinguish, when the knob is
turned from MIN to MAX. Repeat
this procedure for all burners.
Minimum adjustment screw
Pressure testing
The pressure testing must be carried out on
the burners.
Proceed as follows:
)
1) Remove the pan supports and the
burner caps and crowns.
2) Fit manometer tube over the
injector.
3) Turn on the burner gas supply and
ignite another burner supply.
The pressure reading should be
nominally 20 mbar and must be
between 17 mbar and 25 mbar.
4) Turn off the burner supplies.
12
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Conversion from Natural
Gas to LPG
IMPORTANT:
T
h
e
r
e
p
l
a
c
e
m
e
n
t
/
conversion from natural gas to
LPG should only be undertaken
by a competent person.
It is important to note that this model is
designed for use with natural gas but can be
converted for use with butane or propane
gas providing the correct injectors are fitted.
The gas rate is adjusted to suit.
Proceed as follows:
)
1) Ensure that the gas taps are in the
'OFF' position
2) Isolate the hob from the electricity
supply
3) Remove all pan supports, burner
caps, rings, crowns and control
knobs.
4) With the aid of a 7mm box
spanner the burner injectors can
then be unscrewed and replaced
by the appropriate LPG injectors.
To adjust the gas rate:
With the aid of a thin bladed
screwdriver completely tighten down
the by pass adjustment screw. Upon
completion stick the replacement
rating plate on the under side of the
hob.
13
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Building in
IMPORTANT: This hob must be
1
installed according to the instruction
supplied, and by qualified and
competent personnel to the relevant
National Standards.
ON/OFF SWITCH
Please ensure that when the hob is
installed it is easily accessible for the
engineer in the event of breakdown.
FLEX
OUTLET
Building over a cupboard or
drawer
If the hob is to be installed above a cupboard
or drawer it will be necessary to fit a heat
resistant board below the base of the hob on
the underside of the work surface.
ON/OFF SWITCH
It is also recommended to carry out the
electrical connection to the hob as shown in
diagrams 1 and 2.
2
FLEX
OUTLET
14
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Building over a kitchen unit
with door
Dimensions are given in mm.
Proper arrangements must be taken in
designing the furniture unit, in order to avoid
any contact with the bottom of the hob which
can be heated when it is operated. The
recommended solution is shown in diagram
3.
3
The panel fitted under the hob ("a") should
be easily removable to allow easy access if
technical assistance is needed. The space
behind the kitchen unit ("b") can be used for
connections.
Fitting the Hob into the
Worktop
Carry out the building in of the hob as
follows:
1. place the seals supplied with the hob
on the front edge of the cut out.Then,
place them at 86 mm from the side
edges and at 10 mm from the rear
edge, as shown in the diagram, taking
care that the seals meet without
overlapping.
2. Place the hob in the cut out, taking
care that it is centred.
3. Fix the hob with the relevant fixing
clamps, supplied with the injectors kit
(see diagram).When the screws have
been tightened, the excess seal can be
removed.
Seal
The edge of the hob forms a double seal which
prevents the ingress of liquids.
15
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Important safety requirements
This hob must be installed in accordance
with the Gas Safety (Installation and Use)
Regulations (Current Edition) and the IEE
Wiring Regulations (Current Edition).
For appliances installed in the Republic of
Ireland please refer to NSAI- Domestic Gas
Installation I.S. 813 Current Editions and the
ETCI Rules for Electrical Installations.
Provision for Ventilation
Detailed recommendations are contained in
the following British Standards Codes Of
Practice: B.S. 6172/ B.S. 5440, Par. 2 and B.S.
6891 Current Editions.
The hob should not be installed in a bed
sitting room with a volume of less than 20
m3. If it is installed in a room of volume less
than 5 m3 an air vent of effective area of 100
cm2 is required. If it is installed in a room of
volume between 5 m3 and 10 m3 an air vent
of effective area of 50 cm2 is required, while
if the volume exceeds 11 m3 no air vent is
required.
However,if the room has a door which opens
directly to the outside no air vent is required
even if the volume is between 5 m3 and 11
m3.
If there are other fuel burning appliances in
the same room, B.S. 5440 Part 2 Current
Edition, should be consulted to determine
the requisite air vent requirements.
For appliances installed in the Republic of
Ireland please refer to the NSAI- Domestic
Gas Installation I.S.813 Current EditionsTable
Four.
16
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Location
The hob may be located in a kitchen, a
kitchen/diner or bed sitting room, but not in
a bathroom or shower room.
600
M
IN
.
Ensure that there is a minimum distance of
55 mm between the rear cut out edge and
the wall.
A minimum distance of 150 mm must be left
between the side edges of the cut out and
any adjacent cabinets or walls.
The minimum distance combustible material
can be fitted above the hob in line with the
edges of the hob is 400 mm. If it is fitted
below 400 mm a space of 50 mm must be
allowed from the edges of the hob.
The minimum distance combustible material
or a cooker hood can be fitted above the
hob is 650 mm.
17
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Instructions for the User
Operation
For easier lighting, proceed
before putting a pan on the pan
support.
To light a burner:
)
z
push in the relevant control and turn
it to maximum position.
z
Upon ignition, keep the knob pushed
down about 5 seconds. This will
allow the "thermocouple" (Fig. 1 -
letter D) to be heated and the safety
device to be switched off, otherwise
the gas supply would be interrupted.
z
z
Then adjust the flame as required.
If the burner does not ignite, turn the
control knob to zero, and try again.
If the burner accidentally goes out,
turn the control knob to the “off”
position and wait for at least 1
minute before trying to light the
burner again.
Ultra-rapid Burner
(Triple Crown)
Do not keep the control knob
pressed for more than
A
15
seconds. If the burner does not
light even after 15 seconds,
release the control knob, turn
it to the "off" position and wait
for at least 1 minute before
trying to light the burner again.
B
C
D
If you use a saucepan which is
smaller than the recommended
size, the flame will spread
beyond the bottom of the vessel,
causing the handle to overheat.
Fig. 1
A - Burner cap
B - Burner crown
C - Ignition electrode
D -Thermocouple
Take care when frying food in
hot oil or fat, as the overheated
splashes could easily ignite.
18
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As soon as a liquid starts boiling, turn
down the flame so that it will barely
keep the liquid simmering.
If the control knobs become difficult
to turn, please contact your local
Service Force Centre.
When switching on the mains, after
installation or a power cut, it is quite
normal for the spark generator to be
activated automatically.
In the absence of electricity, ignition
can occur without the electrical device;
in this case, approach the burner with
a flame, push the relevant knob down
and turn it anti-clockwise until it
reaches the “maximum” position.
Using the hob correctly
To ensure maximum burner efficiency, it is
stronglyrecommendedthatyouuseonlypots
and pans with a flat bottom fitting the size of
the burner used, so that flame will not spread
beyond the bottom of the vessel (see the
table).
Burner
minimum maximum
diameter diameter
Triple Crown
(ultra rapid)
180 mm
180 mm
260 mm
260 mm
Use only pans or pots with flat bottom.
Large (rapid)
The stainless steel can become
tarnished if excessively heated.
Therefore prolonged cooking with
potstones, earthenware pans or cast-
iron plates is inadvisable.Also, do not
use aluminium foil to protect the top
during use.
Medium (semi-rapid)
rear
front
120 mm
120 mm
220 mm
180 mm
Small (auxiliary)
80 mm
160 mm
Make sure pots do not protrude over
the edges of the cooktop and that they
are centrally positioned on the rings
in order to obtain lower gas
consumption.
Do not place unstable or deformed
pots on the rings: they could tip over
or spill their contents, causing
accidents.
Pots must not enter the control
zone.
19
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Cleaning the hob
Before any maintenance or
cleaning can be carried out, you
must DISCONNECT the hob
from the electricity supply.
The hob is best cleaned whilst
it is still warm, as spillage can
be removed more easily than if
it is left to cool.
This
appliance
cannot
be
cleaned with steam or with a
steam cleaning machine.
The Hob Top
Regularly wipe over the hob top using a soft
cloth well wrung out in warm water to which a
little wasing up liquid has been added.
Avoid the use of the following:
- household detergent and bleaches;
- impregnated pads unsuitable for non-stick
saucepans;
- steel wool pads;
- bath/sink stain removers.
Should the hob top become heavily soiled, the
following products are recommended:
-Forstainlesssteelhobsuseaproprietarystainless
steel cleaner.
- For other hobs use Hob Brite or Bar Keepers
Friend.
Do not leave acid or alkaline
substances (e.g. vinegar, salt,
lemon juice, etc.) on the
cooktop.
Pan Supports
The pan supports are not
dishwasher proof; they must be
washed by hand. Take care when
drying them as the enamelling process
20
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occasionally leaves rough edges. If
necessary, remove stubborn stains
using a paste cleaner.
After cleaning, make sure that the pan
supports are correctly positioned.
YES
NO
To make burners work properly, ensure that
pan supports are placed in a way that the arms
are centred upon the burner as shown in the
picture.
Pay attention when replacing the
pan supports in order to avoid
damaging the hob top.
Cast iron pan supports: take care when
removing them. They are heavy and could
damage the hob or your kitchen furniture if
you let them fall.
The Burners
The burner caps and crowns can be removed
for cleaning.
Wash the burners caps and crowns using hot
soapy water, and remove marks with a mild
paste cleaner. A well moistened soap
impregnated steel wool pad can be used with
caution, if the marks are particularly difficult
to remove.
After cleaning, be sure to wipe dry with a soft
cloth.
The Ignition electrode
The electric ignition is obtained through a
ceramic electrode which contains a metal
electrode (Fig. 1 - C). Keep these
components very clean, to avoid difficult
lighting, and check that the burner crown
holes (Fig. 1 - B) are not obstructed.
21
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Something Not Working?
If the hob is not working correctly,please carry
out the following checks before contacting
your local Service Force Centre.
SYMPTOM
SOLUTION
There is no spark when lighting
the gas.
Check that the unit is plugged in and
the electrical supply is switched on.
Check that the RCCB has not
tripped (if fitted).
Check the mains fuse has not blown.
Check the burner cap and crown
have been replaced correctly, e.g.
after cleaning.
Check the main jet is not blocked
and the burner crown is clear of
food particles.
Check the burner cap and crown
have been replaced correctly, e.g.
after cleaning.
The gas ring burns unevenly.
If after all these checks, your hob still does
not operate correctly, contact your local
Service Force Centre.
Please note that it will be necessary to provide
proof of purchase for any in-guarantee service
calls.
In-guarantee customers should ensure that
the above checks have been made as the
engineer will make a charge if the fault is not
a mechanical or electrical breakdown.
22
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Repairs - After Sales Service
If your hob is not performing satisfactorily;
consult the fault finding guide within this
instruction book (Something not working on
the previous page). In the event of a fault
occurring which you cannot resolve yourself
from advice given within this instruction
manual.
Your first step is to contact our extended
warranty administrators on 0870 0107887
who will give you details of your local Service
Force repair agent.
When contacting Service Force, please quote
the model (Mod.) and serial number (S.N.).
These details have been provided separately
within the pack containing this instruction
manual.
So that you always have these numbers at
hand, we recommend you to make a note of
them here:
Mod. : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PNC : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
S.N. : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Your hob is covered by a 3 year parts and
labour guarantee (see separate details given
at point of sale). Please retain your purchase
receipt safely for the service engineer to verify
the purchase details.
Spare parts
This product should be serviced by an
authorised service engineer, and only genuine
spare parts should be used.
Under no circumstances should you attempt
to repair the hob yourself.
Repairs carried out by inexperienced persons
may cause injury or serious malfunctioning.
Contact our extended warranty
administrators on 0870 0107887 who will
give you details for your local Service Force
repair agent.
Always insist on genuine spare parts.
23
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John Lewis Partnership
171Victoria Street
London SW1E 5NN
ANC 39711-9902
04/09 R.A.
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