Instruction
booklet
Gas hob
ZGF 780 IT
GB
IE
Contents
Important Safety Information ................................................................... 4
Description of the Hob...................................................................................... 6
Instructions for the User ........................................................................... 7
Operation ......................................................................................................... 8
Maintenance and Cleaning ............................................................................. 11
Something Not Working? ................................................................................ 13
Instructions for the Installer ................................................................... 14
Engineer technical data .................................................................................. 14
Important safety requirements......................................................................... 16
Installation ...................................................................................................... 18
Gas Connection ............................................................................................. 18
Building In ...................................................................................................... 19
Building over a cupboard or drawer ................................................................ 19
Building over a kitchen unit with door ............................................................. 19
Fitting the Hob into the Worktop.....................................................................20
Electrical Connections .................................................................................... 21
Wiring diagram ............................................................................................... 22
Fault Finding................................................................................................... 23
Commissioning ............................................................................................... 26
Conversion from Natural Gas to LPG .............................................................. 27
Guide to Use the instructions
The following symbols will be found in the text to guide you throughout the Instructions:
Safety Instructions
Step by step instructions for an operation
)
Hints and Tips
Environmental information
U
This appliance is manufactured according to the following EEC directives:
2006/95 EEC - 2004/108 EEC - 90/396 EEC, current edition.
MANUFACTURER :
ELECTROLUX ITALIA S.p.A.
C.so Lino Zanussi, 30
33080 Porcia (PN) - ITALY
3
Important Safety Information
You MUST read these warnings carefully before installing or using
the hob. If you need assistance, contact our Customer Care
Department on 08705 727 727.
Installation
z
This appliance must be installed and serviced by a competent person as
stated in the Gas Safety (Installation and Use) Regulations Current Editions
and the IEE Wiring Regulations.
z
For appliances installed in the Republic of Ireland please refer to NSAI-
Domestic Gas Installations I.S.813 Current Editions and the ETCI Rules for
Electrical Installations.
z
z
Remove all packaging before using the hob.
Ensure that the gas and electrical supply complies with the type stated on
the rating plate, located near the gas supply pipe.
z
Do not attempt to modify the hob in any way.
People Safety
z
This hob is designed to be operated by adults. Do not allow children to play
near or with the hob.
z
This appliance is not intended for use by children or other persons whose
physical, sensory or mental capabilities or lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction
by a responsible person to ensure that they can use the appliance safely.
z
z
The hob gets hot when it is in use. Children should be kept away until it has
cooled.
Children can also injure themselves by pulling pans or pots off the hob.
During Use
z
This hob is intended for domestic cooking only. It is not designed for
commercial or industrial purposes.
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.
z
When in use a gas cooking hob will produce heat and moisture in the room
in which it has been installed. Ensure there is a continuous air supply, keeping
air vents in good condition or installing a cooker hood with a venting hose.
4
z
z
z
Ensure a good ventilation around the appliance. A poor air supply could cause
lack of oxygen.
When using the hob for a long period time, the ventilation should be
improved, by opening a window or increasing the extractor speed.
Do not use this hob if it is in contact with water. Do not operate the hob with
wet hands.
z
z
Ensure the control knobs are in the ‘OFF’ position when not in use.
When using other electrical appliances, ensure the cable does not come
into contact with the hot surfaces of the cooking appliance.
z
Unstable or misshapen pans should not be used on the hob as unstable
pans can cause an accident by tipping or spillage.
z
z
z
Never leave the hob unattended when cooking with oil and fats.
Never use plastic or aluminium foil dishes on the hob.
Perishable food, plastic items and areosols may be affected by heat and
should not be stored above or below the hob unit.
z
This appliance cannot be cleaned with steam or with a steam cleaning
machine.
Service
z
This hob should only be repaired or serviced by an authorised Service
Engineer and only genuine approved spare parts should be used.
U Environmental Information
z
After installation, please dispose of the packaging with due regard to
safety and the environment.
z
When disposing of an old appliance, make it unusable, by cutting off the
cable.
z
The symbol
on the product or on its 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.
5
Description of the Hob
3
3
5
4
1
2
6
1. Hob Top
2. Auxiliary Burner
3. Semi-rapid Burner
4. Rapid Burner
5. Triple Crown
6. Control knobs
6
Instructions for the User
INSTALLATION
Any gas installation must be carried out by a registered
competent person, and in accordance with existing rules and
regulations.
The relevant instructions are to be found in the second section of this
manual.
Please, ensure that, once the hob is installed, it is easily accessible for
the engineer in the event of a breakdown.
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.
Keep this instruction book for future reference and ensure it is
passed on to any new owner.
These instructions are only valid for countries whose identification
symbols are shown on the cover of this instruction booklet and on
the appliance itself.
7
Operation
Hob burners control knobs
The symbols on the knobs mean that :
there is no gas supply (“off” position)
there is maximum gas supply
there is minimum gas supply
z
Lighting the burners
For easier lighting, proceed before
putting a pan on the pan support.
To light a burner:
turn the relevant knob anti-clockwise to
maximum position ( ), then push it
)
z
down to ignite the burner.
z
Upon ignition, keep the knob pushed
down about 5 seconds. This will
allow the "thermocouple" (see Fig.1 -
letter D) to be heated and the safety
device to be switched off, otherwise
the gas supply would be interrupted.
Fig. 1
Triple crown burner
z
Then adjust the flame as required.
A
B
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.
If you cannot light the flame even after
several attempts, check the "cap"
(see Fig.1 - letter A) and the"crown"
(see Fig.1 - letter B) are in the correct
position.
D
C
A - Burner cap
To switch off a burner:
To put the flame out, turn the knob to the
symbol ( z ).
B - Burner crown
C - Ignition electrode
D - Thermocouple
)
z
8
Do not keep the control knob pressed for more than 15
seconds.
If the burner does not light even after 15 seconds, release
the control knob, turn it the "off" position and wait for at
least 1 minute before trying to light the burner again.
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.
If the control knobs become difficult to turn, please contact your local
Service Force Centre.
Using the hob correctly
To ensure maximum burner efficiency, it is strongly recommended that
you use only pots 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 below).
Burner
minimum
diameter
maximum
diameter
Triple crown
Large (rapid)
180 mm
160 mm
260 mm
260 mm
Medium (semi-rapid)
rear
front
120 mm
120 mm
220 mm
180 mm
Small (auxiliary)
80 mm
180 mm
As soon as a liquid starts boiling, turn down the flame so that it will
barely keep the liquid simmering.
Use only pans or pots with flat bottom.
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.
9
Carefully supervise cooking with fat or oil, since these types of
foodstuff can result in a fire, if over-heated.
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.
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.
10
Maintenance and Cleaning
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:
- For stainless steel hobs use a proprietary
stainless 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.
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.
11
Pan Supports
Wash the pan supports using hot soapy
water. If necessary, a paste cleaner or a soap
impregnated steelwool pad can be used with
caution.
The pan supports are not dishwasher
proof; they must be washed by hand. After
cleaning, be sure to wipe dry with a soft
cloth. Take care when drying them as the
enamelling process occasionally leaves
rough edges. If necessary, remove stubborn
stains using a paste cleaner.
YES
NO
After cleaning, make sure that the pan
supports are correctly positioned, as
shown in the diagram.
Pay attention when replacing the
pan supports in order to avoid
damaging the hob top.
The Ignition electrode
The electric ignition is obtained through a
ceramic electrode which contains a metal
electrode (Fig. 1 letter C - page 8). Keep
these components very clean, to avoid
difficult lighting, and check that the burner
crown holes (Fig. 1 letter B - page 8) are not
obstructed.
12
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.
„
The gas ring burns unevenly.
‹
‹
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.
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.
13
Instructions for the Installer
Engineer technical data
OVERALL DIMENSIONS
CUT OUT DIMENSIONS
Width:
Depth:
744 mm
510 mm
Width:
Depth:
560 mm
480 mm
SUPPLY CONNECTIONS
Gas:
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
HEAT INPUT
Front Left Burner
(semi-rapid)
Rear Left Burner
(semi-rapid)
2.0 kW (6826 BTU/HR)
2.0 kW (6826 BTU/HR)
4.0 kW (13652 BTU/HR)
3.0 kW (10239 BTU/HR)
1.0 kW (3413 BTU/HR)
Central Burner
(Triple Crown)
Rear Right Burner
(rapid)
Front Right Burner
(auxiliary)
APPLIANCE CLASS
APPLIANCE CATEGORY
GAS SUPPLY
3
II2H3+
Natural gas G20 (2H) 20 mbar
14
Gas burners
BURNER
RAPID
SEMI-RAPID AUXILIARY TRIPLECROWN
TYPEOFGAS
POSITION
MAX MIN MAX MIN MAX MIN
MAX
MIN
NOMINAL THERMAL
POWER
kW
3.0
0.75
2.0
0.45
1.0
0.33
4.0
1.2
NATURAL GAS
20 mbar
NOMINAL FLOW
RATE
m3/h 0.286 0.057 0.190 0.038 0.095 0.028
0.381
146
0.114
VALUE =
37.78 MJ/m3
Ws - 50.7 MJ/ m3
NOZZLE REFERENCE
1/100mm
119 Adjust.
96 Adjust. 70 Adjust.
Adjust.
NOMINAL THERMAL
LPG GAS
28-30/37 mbar
VALUE =
POWER
kW
2.8
0.75
2.0
0.45
1.0
0.33
4.0
1.2
NOMINAL FLOW
RATE
g/h
202 43.5
86 42
144
71
29
32
72
50
21,5
28
291
98
87
56
49.92 MJ/Kg
NOZZLE REFERENCE
1/100mm
15
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 Editions Table Four.
16
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 450 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.
For appliances installed in the Republic of Ireland please refer to NSAI- Domestic
Gas Installation I.S 813 Current Edition Section 7- Permitted Locations of Appliance.
17
Installation
IMPORTANT
Any gas installation must be carried out by a GAS SAFE REGISTER
installer.
Please, ensure that, once the hob is installed, it is easily accessible for the
engineer in the event of a breakdown.
The manufacturer will not accept liability, should the above instructions or
any of the other safety instructions incorporated in this instruction booklet
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
Gas Connection
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.
It is important to install the elbow correctly, with the shoulder on the
end of the thread, fitted to the hob connecting pipe.
Failure to ensure the correct assembly will cause leakage of gas.
Check to be sure that all connections to the unit are completely gas-tight;
use a soap solution to do this, never a flame.
18
Building In
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.
It is also recommended to carry out the electrical connection to the hob as shown
in diagrams 1 and 2.
Building over a kitchen unit
with door
1
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.
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.
Dimensions are given in mm.
2
3
19
Fitting the Hob into the Worktop
Carry out the building in of the hob as follows:
• 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.
• place the hob in the cut out, taking
care that it is centred;
• fix the hob with the relevant fixing
clamps, supplied with the
accessories bag, as shown in the
diagram. When the screws have
been tightened, the excess seal
can be removed.
The edge of the hob forms a double seal
which prevents the ingress of liquids.
Seal
20
Electrical Connections
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.
THIS HOB MUST BE EARTHED.
Electrical Requirements
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).
The manufacturer declines any liability should these safety
measures not be observed.
This hob is designed to be connected to a 230 V~50 Hz AC electrical
supply.
Before switching on, make sure the electricity 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.
The hob is supplied with a 3 core flexible
supply cord incorporating a 3 amp plug
fitted. In the event of having to change the
fuse, a 3 amp 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
FO 0390
coloured in accordance with the following
code:
Green and Yellow
Blue
Brown
- Earth
- Neutral
- Live
1) Connect the green and yellow (earth) wire to the terminal in the
plug which is marked with the letter 'E' or the earth symbol
or coloured green and yellow.
)
2) Connect the blue (neutral) wire to the terminal in the plug which
is marked with the letter 'N' or coloured black.
21
3) Connect the brown (live) wire to the terminal in the plug which
is marked with the letter 'L' or coloured red.
Upon completion there must be no cut, or stray strands of wire present
and the cord 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.
The replacement of electric cable must be carried out ex-
clusively by the service force centre or by personnel with
similar competencies, in accordance with the current regu-
lations.
Permanent Connection
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.
The switch must not break the yellow and green earth cable at any point.
Ensure that the hob supply cord does not come into contact
with surfaces with temperatures higher than 50 deg. C.
Wiring diagram
22
Fault Finding
Preliminary Electrical Systems Check
Blue
Brown
START
Isolate appliance
and carry out:
A: Earth Continuity
check.
Blue
Green
Yellow
Brown
YES
NO
Carry out:
C: Polarity check.
Carry out:
D: Resistance to
Earth check.
Has inlet fuse blown?
NO
Electricity supply
should now be
satisfactory.
YES
PLUG (with cover removed)
Earth Wire
SOCKET
(face view)
Inlet wiring
faulty.
Rectify any
fault.
Green/Yellow
( )
( )
E
Neutral Wire
Blue
N
L
Isolate appliance and
carry out:
B: Insulation check.
Rectify any fault
including replacing
fuses as necessary.
23
A. EARTH CONTINUITY CHECK
Appliance must be electrically disconnected - meter set on W (Ohms)
x 1 scale and adjust zero if necessary.
— Test leads from any appliance earth point to earth pin on plug.
Resistance should be less than 0.1 W (Ohm), check all earth wires
for continuity and all contacts clean and tight.
B. INSULATION CHECK
Appliance electrically disconnected, all switches ON.
a) meter set on W (Ohms) x 1 scale.
Test leads from L to N in appliance terminal block. If meter reads
«0» then there is a short circuit.
b) meter set on W (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.
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.
24
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
25
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.
1) Turn the gas tap to the MAX position and ignite.
)
2) 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
Minimum adjustment
extinguish, when the knob is
screw
turned from MIN to MAX.
Repeat this procedure for all
burners.
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.
26
Conversion from Natural Gas to LPG
IMPORTANT
The replacement/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.
Method
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 and crowns.
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.
27
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