Operating Instructions
HOB
Contents
GB
Installation, 2-6
Positioning
GB
Electrical connections
Gas Connection
English, 1
Technical data
Characteristic of the burners and nozzles
Description of the appliance, 7
Overall view
Start-up and use, 8
Practical Advise on Using the Burners
Precautions and tips, 9
General safety
Disposal
Maintenance and care, 10
Switching the appliance off
Cleaning the appliance
PI 640 A GB
PI 640 TC GB
Greasing the Taps
Assistance, 11
Front
Electrical Connection for Gas Cooktop
GB
Fit the supply cord with a standard plug for the
demand rate indicated on the rating plate or connect it
directly to the electrical mains. In the latter case, a
single pole switch must be placed between the
appliance and the mains, with a minimum opening
between the contacts of 3 mm in compliance with
current safety codes (the earthing wire must not be
interrupted by the switch). The power supply cord
must be positioned so that it does not reach a
temperature in excess of 50°C above room
temperature at any point.
Clamp Position for
H=40mm top
Back
! Use the clamps contained in the "accessory kit."
! The installer must ensure that the correct electrical
connection has been made and that it is compliant
with safety regulations.
• In the event the cooktop is not installed above a
built-in oven, a wood panel must be inserted as
insulation. This panel must be placed at least 20
mm from the bottom of the cooktop itself.
Before making the actual connection, make sure that:
• The fuse and electrical system can withstand the
load required by the appliance;
Ventilation
When installing the cooktop above a built-in oven, the
oven should be placed on two wooden strips; in the
case of a joining cabinet surface, remember to leave a
space of at least 45 x 560 mm at the back (see
picture).
• That the electrical supply system is equiped with an
efficient earth hook-up according to the norms and
regulations prescribed by law;
• That the plug or switch is easily accessible.
! The wires in the mains lead are coloured in
accordance with the following code:
560 mm.
Green & Yellow
Blue
Brown
- Earth
- Neutral
- Live
As the colours of the wires in the mains lead may not
correspond with the coloured markings identifying the
terminals in your plug, proceed as follows:
! The hob can only be installed above built-in
ovens provided with cooling ventilation.
Connect the Green & Yellow wire to the terminal
marked “E” or
or coloured Green or Green &
Yellow.
Electrical connection
Connect the Brown wire to the terminal marked “L” or
coloured Red.
Connect the Blue wire to the terminal marked “N” or
coloured Black.
The cooktops fitted with a tripolar electrical supply
cord are designed to be be used with alternating
current according to the indications on the rating plate
located under the cooktop. The earthing wire can be
identified by its yellow-green colour.
! The cable must not be bent or compressed.
In the case of installation over a built-in electric oven,
the electrical connections for the cooktop and oven
should be independent, not only for safety purposes,
but also to facilitate removal of one or both in the
future.
! The cable must be checked regularly and replaced
by authorised technicians only (see Assistance).
! The manufacturer declines any liability should
these safety measures not be observed.
3
Gas Connection
Adapting the Cooktop for Different Types of Gas
GB
The cooktop should be connected to the gas supply
by an authorized installer. During installation of this
product it is essential to fit an approved gas tap to
isolate the supply from the appliance for the
To adapt the cooktop to a different type of gas than
that for which it was designed, (see the sticker under
the hob or on the packaging), the burner nozzles must
be changed, as follows:
convenience of any subsequent removal or servicing.
Connection of the appliance to the gas mains or liquid
gas tanks must be carried out according to the safety
standards currently in force, and only after it is
ascertained that it is suitable for the type of gas to be
used. If not, follow the instructions indicated in the
section entitled, “Adapting the Cooktop for Different
Types of Gas”. If the cooktop is to be connected to
tanks containing liquid gas, use pressure regulators
that comply with current safety standards.
! To insure that the appliance operates safety, the gas
is regulated correctly and your appliance lasts over
time, make sure that gas pressure levels comply with
the indications given in Table 1, “Nozzle and Burner
Specifications”.
1. Remove the pan supports and slide the burners out
of the cooktop.
2. Unscrew the nozzles using a 7mm socket wrench
and replace them with those for the new type of
gas. (See table 1, “Burner and Nozzle
Specifications”).
3. Reassemble the parts following the instructions in
reverse order.
4. On completing the operation, replace the old rating
label with the one showing the new type of gas; the
sticker is available from our Service Centres.
Gas Connection to Non-flexible Pipe
• Regulation of Air Supply to the Burner
(copper or steel)
The burners do not need a primary air regulator.
! Connection to the gas source must be done in such
a way as to not create any stress points at any part of
the appliance.
• Minimum Regulation
1. Turn the gas valve to minimum.
The appliance is fitted with an adjustable, "L" shaped
connector and a gasket for the attachment to the gas
supply. Should this connector have to be turned, the
gasket must be replaced (supplied with the
appliance).
2. Remove the knob
and turn the regulator
screw (positioned either
on the side of the top or
inside the shaft)
clockwise until the flame
becomes small but
regular.
The gas feed connector to the appliance is a
threaded, male 1/2" connector for round gas pipe.
Gas Connection to Flexible Steel Pipe
The gas feed connector to the appliance is a
threaded, male 1/2" connector for round gas pipe.
Only use pipes, tubes and gaskets that comply with
current safety codes. The maximum length of the
flexible pipes must not exceed 2000 mm. Once the
connection has been made, ensure that the flexible
metal tube does not touch any moving parts and is not
crushed.
3. Make sure that, when the knob is turned rapidly
high to low, the flame does not go out.
4. In the event of a malfunction on appliances with the
security device (thermocouple) when the gas
supply is set at minimum, increase the minimum
supply levels using the regulator screw.
Check the Seal
! In the case of liquid gas, the regulation screw must
be fully screwed in (clockwise).
! Once the appliance has been installed, make sure
all the connections are properly sealed, using a soapy
water solution. Never use a flame.
! Once the adjustment has been made, apply sealing
wax, or a suitable substitute, to the old seals on the
by-pass.
4
! If the gas pressure is different than that prescribed, a
pressure regulator must be installed at the source, in
compliance with national standards governing the use
of piped gas regulators.
DATA PLATE
Gas section
GB
Class: II2H3+
Rated power kW (1):
8,05 (585 g/h - G30)
(575 g/h - G31)
Electrical section
voltage: 220-240V ~ 50/60Hz
This appliance conforms to the
following European Economic
Community directives:
- 73/23/EEC of 19/02/73 (Low
Voltage) and subsequent
amendments;
- 89/336/EEC of 03/05/89
(Electromagnetic Compatibility) and
subsequent amendments;
- 90/396/EEC of 29/06/90 (Gas)
and subsequent modifications;
- 93/68/EEC of 22/07/93 and
subsequent amendments.
(1): The values in g/h refer to the capacities with liquid
gas (Butane, Propane).
5
Characteristic of the burners and nozzles
GB
Table 1
Liquid Gas
By-Pass Nozzle
Natural Gas
Nozzle Flow*
Burner
Diameter Thermal power
Flow*
g/h
(mm)
kW (p.c.s.*)
1/100
1/100
1/100
l/h
Nomin. Ridot.
(mm)
(mm)
***
**
(mm)
Fast (R)
100
75
3,00
1,90
1,00
3,25
0,70
0,40
0,40
1,30
41
30
30
57
87
70
52
91
218
138
73
214
136
71
128
104
76
286
181
95
Semi Fast (S)
Auxiliary (A)
Triple Crown (TC)
51
130
236
232
133
309
Nominal (mbar)
Minimum (mbar)
Maximum (mbar)
28-30
20
35
37
25
45
20
17
25
Supply
Pressures
**
At 15°C and 1013 mbar-dry gas
**
***
Propane P.C.S. = 50.37 MJ/kg.
Butane P.C.S. = 49.47 MJ/kg.
Natural P.C.S. = 37.78 MJ/m3
S
S
S
S
R
A
TC
A
PI 640 A GB
PI 640 TC GB
6
Description of the appliance
Overall view
GB
Support Grid for
Cookware
Gas Burners
Control Knobs for Gas
Burners
Ignition Button for Gas
Burners
Ignitor for Gas Burners
7
Start-up and use
The position of the corresponding gas burner is
indicated on each control knob.
Practical Advise on Using the Burners
GB
For best performance, follow these general guidelines:
Gas Burners
• Use the appropriate cookware for each burner (see
table) in order to prevent the flame from reaching
the sides of the pot or pan;
The burners differ in size and power. Choose the most
appropriate one for the diameter of the cookware
being used.
The burner can be regulated with the corresonding
control knob by using one of the following settings:
• Off
• Alwasy use cookware with a flat bottom and keep
the lid on;
High
Low
• When the contents come to a boil, turn the knob to
"Low".
To turn on one of the burners, place a lighted match
or lighter near the burner, press the knob all the way in
and turn in the counter-clockwise direction to the
"High" setting.
Burner
ø Cookware Diameter (cm)
Fast (R)
24 - 26
16 - 20
10 - 14
24 - 26
On those models fitted with an ignitor, the ignition
Semi Fast (S)
Auxiliary (A)
button, identified by the
symbol, must first be
pressed and then the corresponding knob pushed all
the way in and turned in the counter-clockwise
direction to the "High" setting.
Triple Crown (TC)
! If the burner accidently goes out, turn off the gas
with the control knob and try to light it again after
waiting at least 1 minute.
To turn off a burner, turn the knob in the clockwise
direction until it stops (it should be on the “•” setting).
8
Precautions and tips
! This appliance has been designed and
• Always make sure pan handles are turned towards
the centre of the hob in order to avoid accidental
burns.
GB
manufactured in compliance with international safety
standards. The following warnings are provided for
safety reasons and must be read carefully.
• Avoid closing the cover (if present) while the gas
burners and electric plates are still warm.
General safety
• Do not use cookware with uneven or deformed
bottoms.
• This manual is for a class 3 built-in cooktop.
• Gas appliances require regular air exchange to
ensure trouble-free performance. When
installing the cooker, follow the instructions
provided in the paragraph on “Positioning” the
appliance.
Disposal
• When disposing of packaging material: observe
local legislation so that the packaging may be
reused.
• These instructions are only valid for the
countries the symbols for which appear on the
manual and the serial plate.
• When disposing of your old appliance: contact your
Local Organisation in charge of waste disposal.
• This appliance was designed for domestic use
inside the home and is not intended for commercial
or industrial use.
• Make the appliance unusable by cutting off the
electrical cable before disposal.
• The appliance must not be installed outdoors, even
in covered areas. It is extremely dangerous to leave
the appliance exposed to rain and storms.
• Do not touch the appliance with bare feet or with
wet or damp hands and feet.
• The appliance must be used by adults only, to cook
food according to the instructions in this manual.
Do not use the hob as a worktop or chopping
board.
• Ensure that power supply cables of other electrical
appliances do not come into contact with the hot
parts of the hob.
• The openings and slots used for ventilation and
heat dispersion must never be covered.
• Make sure the knobs are in the “•”/”¡” position when
the appliance is not in use.
• When unplugging the appliance always pull the plug
from the mains socket, do not pull on the cable.
• Never carry out any cleaning or maintenance work
without having unplugged the plug from the mains.
9
Maintenance and care
Switching the appliance off
Greasing the Taps
GB
Disconnect your appliance from the electricity supply
before carrying out any work on it.
The taps may jam in time or they may become difficult
to turn. If so, the tap itself must be replaced.
! This operation must be performed by a technician
Cleaning the appliance
authorised by the manufacturer.
! Do not use abrasive or corrosive detergents, stain
removers, anti-rust products, powder detergents or
sponges with abrasive surfaces: these may scratch
the surface.
! Never use steam cleaners or pressure cleaners on
the appliance.
• It is usually enough to wash the hob with a damp
sponge and dry it with absorbent kitchen roll.
• The flame spreaders should be washed frequently
with hot water and detergent, taking care to
eliminate any scale.
• In the hob equipped with automatic lighting, the
terminal part of the electronic instant lighting
devices should be cleaned frequently and the gas
outlet holes on the flame spreaders should be
checked to make sure they are free of any
obstructions.
• Stainless steel may become marked if it comes into
contact with very hard water or harsh detergents
(containing phosphorous) for long periods of time.
After cleaning, it is advisable to rinse thoroughly
and dry. It is also recommended that drops of water
be dried.
10
Assistance
It may occur that the cooktop does not function or does not function properly. Before calling customer service for
assistance, lets see what can be done.
GB
First of all, check to see that there are no interruptions in the gas and electrical supplies, and, in particular, that the
gas valves for the mains are open.
The burner does not light or the flame is not uniform around the burner.
Check to make sure that:
• The gas holes on the burner are not clogged;
• All of the movable parts that make up the burner are mounted correctly;
• There are no draughts around the cooking surface.
The flame does not stay lighted on the model with the safety device.
Check to make sure that:
• You press the knob all the way in;
• You keep the knob pressed in long enough to activate the safety device.
• The gas holes are not clogged in the area corresponding to the safety device.
The burner does not remain on when set to "Low".
Check to make sure that:
• The gas holes are not clogged.
• There are no draughts near the cooking surface.
• The minimum has been adjusted correctly (see the section entitled, "Minimum Regulation").
The cookware is not stable.
Check to make sure that:
• The bottom of the cookware is perfectly flat.
• The cookware is centered correctly on the burner .
• The support grids have not been inverted.
If, despite all of these checks, the cooktop does not function properly and problem persists, call the nearest Merloni
Elettrodomestici Customer Service Centre, Communicating:
• appliance model (Mod.)
• serial number (S/N)
This information is found on the data plate located on the appliance and/or on the packaging.
! Never call upon technicians not authorized by the manufacturer, and refuse to accept spare parts that are not
original.
11
10/2004 - 195045883.00
XEROX BUSINESS SERVICES
GB
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