Liberty PG9051G-CC7B User manual

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Instruction Manual
Built-In Gas Hob
PG9051G-CC7B
PG9051G-CCB
PG9051S-CC7I
PG3020BG-DCB
PG6040BG-H1C2BI1
Please read this manual before the operation, and keep this manual for future use.

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Contents
1. Close-up View......................................................................................03
2. How to Use Your Gas Hob.................................................................09
3. How to Keep Your Gas Hob in Shape...............................................10
4. Practical Advice................................................................................11
5. Is there a problem?............................................................................11
6. Installation Instructions for built-in..................................................12
7. Table1 Burners and Nozzle Specifications .....................................17
8. Table2 How to convert gas source...................................................18
9. Table3 Adapting to different types of gas .......................................19
10. Table4 Gas source and national comparison table.........................20
11. NOTICE ..........................................................................................21

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Congratulations on choosing this appliance, which you will find is dependable and easy to use. We advise
you to read this manual for best performance and to extend the lifespan of your appliance. Thank you.
Important Safety Instructions:
Read these instructions carefully before installing or using this appliance.
No combustible material or products should be placed on this appliance at any time.
Please make this information available to the person who responsible for installing the appliance as it could
reduce your installation costs.
In order to avoid a hazard,this appliance must be installed according to these instructions for installation.
This appliance is to be properly installed and earthed only by a suitable qualified technician. Do not
disassemble the unit by yourself to avoid any dangers and damages to the gas cooktop.
Never leave the appliance unattended when in use. Boil over causes smoking and greasy spillovers that may
ignite.
Never leave any objects or utensils on the appliance.
Never use your appliance for warming or heating the room.
Unplug from outlet when not in use and before cleaning.
Do not allow children to play with the appliance or sit,stand,or climb on it.
Do not store items of interest to children in cabinets above the appliance.
Children who climbing on the cooktop could be seriously injured.
Do not leave children alone or unattended in the area where the appliance is in use.
Children or persons with a disability which limits their ability to use the appliance
should have a responsible and competent person to instruct them in its use.The instructor should be confirmed
that they can use the appliance without doing danger to themselves or their surroundings.
WARNING:Unattended cooking on a cooktop with fat or oil can be dangerous and may result in fire.Never try
to extinguish a fire with water,but switch off the appliance and then cover flame e.g.with a lid or a fire blanket.
WARNING:Danger of fire:do not store items on the cooking surfaces.
WARNING:If the surface is cracked,switch off the appliance to avoid the possibility of electric shock,for
cooktop surfaces of glass-ceramic or similar material protect live parts.

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Close-up
View
1. Auxiliary Burners
2. Semi-rapid burner
3. Rapid burner
4. Triple ring wok burner
5. Ignitor for Gas Burners
6. Safety Device - Activates if the flame accidentally goes out (spills,
drafts, etc.), interrupting the delivery of gas to the burner.
7. Control Knobs for Gas Burners and Electric Hot Plates

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How
to
Use
Your
Gas
hob
The position of the corresponding gas burner is indicated on each control knob.
Gas Burners
The burners are different in size and power. Choose the most appropriate one for the diameter of the
cookware being used.
The burner can be regulated with the corresponding control knob by using one of the following settings:
OFF
High
Low
On those models fitted with a safety device
The knob must be pressed for about 6 seconds until the flame is lighted and warmed up.
On those models fitted with an igniter
The electric ignition button, identified by the symbol, must be pressed first, then the corresponding knob is
pushed and turned in the counter-clockwise direction to the "High” setting.
To light a burner: Simply press the corresponding knob and turn it in the counter-clockwise direction to
the High setting, keep press until the burner is lighted .
Caution: If the flame goes out accidentally, turn off the gas with the control knob and try to light it again at
least 1 minute later.
To turn off a burner: Turn the knob in the clockwise direction until it is stopped (it should be on the " ·"
setting).
How
to
Keep
Your
Gas
hob
in
Shape
Before cleaning or performing maintenance on your gas hob, disconnect it from the electrical power supply

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(included battery power).
To extend the lifespan of the gas hob, it is absolutely indispensable that it is cleaned carefully, thoroughly
and usually, please keep in mind to the following:
The enameled parts and the glass top, must be washed with warm water without using abrasive
powders or corrosive substances which could ruin them;
The removable parts of the burners should be washed usually with warm water and soap, make sure to
remove caked-on substances;
Automatic igniter pin, the end must be cleaned carefully and usually, make sure ignition keep working
normally.
Stainless steel top plate and other steel parts can be stained if keep touch with high concentration
calcareous water or corrosive detergents (containing phosphorus). To extend the lifespan, we advise
these parts be rinsed thoroughly with water and dry them by blowing, It is a good idea to clean up any
spills too.
After glass hob working, the surface must be cleaned by a damp cloth to remove dust or food residues.
Glass surface should be cleaned regularly with warm water and non-corrosive detergent .
First, to remove all food residues or greases with a cleaning scraper, e.g.
Cleaning scraper (not supplied) (Fig. 1).
While the cooking surface is warm, clean it with a suitable cleaning product and paper towels, then rub
with a damp cloth and dry surface. Such as aluminum foil, plastic items, objects made of synthetic
material, sugar or foods with a high sugar content that have been melted onto the surface, it must be
removed immediately.
While the cooking surface is still hot, clean it with a scraper and a transparent protective film which
prevent to make more dirt. This also protect the surface from damage caused by food with a high sugar
content .
Do not use abrasive sponges or cleaning products, these holds true for chemically aggressive cleaners,
like oven sprays and stain removers (Fig.2);
Fig.1 Fig.2
Cleaning the grill/pan support, it is recommended to clean it while it is still hot . To move grill away from
the hob and put it in sink, remove the food residues or grease first, after grill has cooled, rinse it with
water.
Greasing the Gas Valves
Over time, the gas valves may be sticked , and it is difficult to turn on/off. For this case, should clean the
inside of valve and greased it.

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Kind reminder: This procedure must be performed by a technician authorized by the
manufacturer.
Practical
Advice
Practical Advice on Using the Burners
For best performance, follow these general guidelines:
Use the appropriate cookware for each burner (see table) in order to prevent the flame to reach the
side of the pot or pan;
Always use cookware with a flat bottom and keep the lid on;
When the contents come to a boil, turn the knob to "Low".
To identify the type of burner, refer to the designs in the section entitled, "Burner and Nozzle Specifications".
Burner Ø Cookware diameter
Auxiliary burner 3.9-5.5inch(10~14cm)
Semi-rapid burner 6.3-7.8inch(16~20cm)
Rapid burner 8.7-9.4inch(22~24cm)
Triple ring wok burner 9.4-10.2inch(24~26cm)

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Is
there
a
Problem?
If you find the gas hob cannot work suddenly or cannot work properly. Before contacting
customer service for assistance, let us check what we can do .
First of all, check and confirm there have no interruptions to the gas and electrical supplies, particularly, if
the gas valves keeping turn on.
The burner cannot be lighted 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 of burners are fixed correctly;
There is no air flow around the cooking surface.
The flame does not keep lighting to the burner with thermocouple.
Check to make sure that:
You press the knob all the way;
You keep pressing the knob for enough time to activate the thermocouple.
The gas holes are not clogged in the area corresponding to the thermocouple.
The flame goes out while turning knob to "Low" setting.
Check to make sure that:
The gas holes are not clogged.
There is no air flow around 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.
After checked all of these, the gas hob still does not work properly, please contact the Customer Service
Center and inform them of:
--Tile type of problem .
--The gas hob model number as indicated on the packing carton, and order number.
Never call the technicians who is not authorized by your supplier, and refuse to use the spare parts which
are not from manufacturer.
Installation
Instructions
for
built-in
The following instructions are directed at the qualified installer, so the installation and maintenance
procedures may be followed in the most professional and expert manner.
Important: Unplug the electrical connection before performing any maintenance or regular upkeep
work.
Positioning for gas hob
Important: this unit may be installed and used only in permanently ventilated rooms.
The following requirements must be observed:

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a) The room must be fitted with a ventilation system which ventilates smoke and gases from combustion to
the outside of rooms.
This must be done by hood or electric ventilator.
In a chimney stack or branched flue.
(exclusively for cooking appliances)
Directly to the Outside
b) The room must be allowed for the influx of the air which is for proper combustion. The air flow for
combustion purposes must not less than 2 m³/h per kW of installed capacity. The air supply will be
effected by influx from the outside through a duct, its inner cross section is at least 15.5in² （ 100cm² ）
and must not be blocked accidentally.
The gas hob without safety devices, to prevent flame go out accidentally, must have a ventilation
working on twice volume. For example, a minimum of 31in² （ 200 cm² ） (Fig. 3). Otherwise, the
room can be vented indirectly through adjacent rooms which is fitted with ventilation ducts to the
outside. Although the adjacent rooms are not shared areas, bedrooms, but fire risk is hidden (Fig. 4).
Adjacent Room
Examples of ventilation holes for comburent air.
Fig.3
Room to be Vented
Enlarging the ventilation slot between window and floor
Fig.4
c) Intensive and prolonged working of the gas hob that needs to intensify ventilation, e.g. opening
windows or increasing the power of the air intake system (if present).
d) Liquefied petroleum gases are heavier than air, so settle it downward. Rooms in which LPG tanks are
installed must be fitted with ventilation to the outside to avoid of gas leakage.
Therefore, LPG tanks which are empty or partially full, must not be installed or stored in rooms or spaces
below ground level (cellars etc.). It is a good idea to keep only the tank which is working currently in the
room, and make sure that it is not closed to heating source (ovens, fireplaces, stoves, etc.).
Installation of built-in gas hob
The gas hobs are designed with protection degree against excessive heating, the appliance can be
installed next to cabinets, and the height should not exceed the hob.
For a correct installation , the following precautions must be followed:
a) The hob may be located in a kitchen, a diner or bed/ sitting room, but not in a bathroom or shower room .
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b) The furniture standing near to the unit, it is higher than the working boards, it must be placed at least
4.3inch(110mm)distance to the edge of the board.
c) The cabinets should be positioned near to the hood at a height of 16.5inch(420 mm) at least (Fig. 5).
d) Hob should be installed directly under a cupboard, the latter should be at least 27.5inch(700mm) from the
worktop, as shown in Fig. 6.
e) Fixing fittings (hooks, screws) are provided to place the hob on work top , measure 0.79-1.91inchin
thickness (see Fig.7)
Note: min 650mm with hood, min 700mm without hood （ Fig. 5. ）
f) Cut out the work surface according to the sizes shown in the drawing. For the purpose of installation and
use, a minimum of 2.36" and 5.9”space shall be preserved around the hole. As shown below:
（Fig. 6.）
Model (Unit: inches) L W H A B D
PG9051G-CC7B 34 20 3.95 18.9 33 1.96
PG9051G-DCB 34 20 3.95 18.9 33 1.96
PG9051S-CC7I 34 20 3.95 18.9 33 1.96
PG3020BG-DCB 12 20 3.95 18.9 10.6 1.96
PG6040BG-H1C2BI1 23 20 3.95 18.9 22 1.96
Product Size: L= Length. W=Width. H=Height

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g) The cooktop should be placed on a stable, smooth surface. Insert the appliance into the installation opening.
And then fix the cooktop on the work surface by screw two brakets on the left side and two brackets on the
right side of cooktop (see below picture) after installation.
（ Fig. 7. ）
N. B: Use the Hooks/Retaining Brackets contained in the "accessories bag"
h) In the event the gas hob is not installed on a built-in oven, a wooden panel must be inserted for insulation.
This panel must be placed at least 0.8inch ( 20mm) distance from the bottom of hob.
lmportant: When installing the hob on 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 1.8-22inch ( 4 5 x 560mm) at least
from the back side.
When install hob on a built-in oven without forced ventilation, ensure that have air inlets and outlets to
ventilate the interior of the cabinet adequately.

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Gas connection for gas hob
The gas hob should be connected to the gas-supply by a registered installer. During installation it is
essential to fit an approved gas tap to isolate the supply from the hob for the convenience of any
subsequent removal or servicing. Connect the hob to the gas mains or liquid gas, it must be carried out
according to the prescribed regulation in force, and only after it is ascertained that it is adaptable to the type
of gas to be used. If not, follow the instructions indicated in the paragraph headed "Adaptation to different
gas types". In the case of connection to liquid gas by tank, use pressure regulators that conform to the
regulation in force.
Important: For safety, for the correct regulation of gas use and long life of the hob, ensure that the gas
pressure conforms to the indications given in table 1 "Burners and Nozzle Specifications".
Connection to non-flexible tube
(copper or steel)
Connection to the gas source must be done in such a way as to not create any stress points at any part of
the gas hob.
The hob is fitted with an adjustable "L" shape connector and a gasket to the gas supply.
The connector should be dismounted and the gasket must be replaced .
The feeding connector of the gas to the hob is threaded 1/2 gas cylinder.
Connection to flexible steel tube
The gas feed connector to the hob is threaded, 1/2" connector for round gas pipe. Only use pipes and
sealing gaskets that conform to the standards currently in force. The maximum length of the flexible pipes
must not exceed 6.6ft ( 2m). Once the connection has been made, ensure that the flexible metal tube does
not touch any moving parts and not be crushed.
Check the Seal
Once the hob was installed, make sure all the connections are properly sealed, use a soapy water to test.
Apply soapy water to the pipe joint, if there are no air bubbles, that means there is no air leak. For your
safety, do not ignore this step.
Attention: Never use flame!
Electrical Connection
The hob fitted with a tripolar electrical supply cord which are designed to be used alternating
current .According to the indications on the rating plate located under the hob. The earthing wire can be
identified by its yellow-green colour.
In the case of installation over a built-in electric oven, the electrical connections for the hob and oven should
be independent, not only for safe purpose, but also be convenient to remove them in the future.
Electrical Connection for Gas hob
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 hob and
the mains, with a minimum opening between the contacts of 0.12inch(3mm) 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 122℉(50 ℃) than room temperature at any
point.

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Before actual connection make sure that:
The fuse and electrical system can withstand the load required by the hob;
The electrical supply system is equipped with an efficient earth hook-up according to the norms
and regulations prescribed by law;
The plug or switch are easily accessible.
Important: the wires in the main lead are coloured in accordance with the following code:
Green & Yellow
Blue
Brown
- Earth
- Neutral
- Live
As the colours of the wires in the main lead may not correspond with the coloured markings identifying the
terminals in your plug, proceed as follows: Connect the Green & Yellow wire to terminal marked "E" or
or coloured Green or Green & Yellow.
Connect the Brown wire to the terminal marked "L" or coloured Red.
Connect the Blue wire to the terminal marked "N" or coloured Black.
Table1:Burners and Nozzle Specifications
Adapting the Gas hob for Different Types of Gas
At 15°C and 1013 mbar
P.C.I.NG 40.1MJ/m³ P.C.I LPG 93.1MJ/m³
NG LPG
Burner Nomral
Burner
Capacities（
BTU）
Nozzle 1/100
(mm)
Nomral Burner
Capacities（BTU）
Nozzle 1/100 (mm)
Auxiliary (Small) (A) 3413 75 3413 53
Semi rapid (Medium) 5972 100 5972 68
Rapid (R) 9385 115 9385 79
Triple Ring (TR) 11262 130 11262 93
Supply pressures 5" W.C. 10" W.C.

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Replacement of burner nozzle: loosen the nozzle with a dedicated wrench.Fit the
new nozzle according to the required gas type (see table 1 for reference) 。
After you have converted the gas hob to another gas type, make sure you have placed a label
containing that information on the appliance.
TABLE2: How to Convert Gas Source
Adjustment of the reduced valve flow
Burners Flame Converting the
hob from LPG
to natural gas
Converting the
hob from natural gas
Gas to LPG
Regular burners
Full flame
Replace the burner
Nozzle according
To the guidelines in
table 1
Replace the burner
Nozzle according
to the guidelines in
table 1
Saving flame
Loosen the adjustment
Spindle (see fig. 7 below
) And adjust the flame
Loosen the adjustment
Spindle (see fig. 7 below )
And adjust the flame
Valve adjustment
Valve adjustment should be done with the control knob set at Burner ON saving flame position.
Remove the knob, and adjust the flame with a tiny screwdriver (see fig.7 below).
Fig.7
To check the adjusted flame: heat the burner at full open position for 10 minutes. Then turn the knob into the
saving setting. The flame should not extinguish nor move to the nozzle. If it extinguish or moves to the
nozzle, readjust the valves.

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Flame selection
As the burners are adjusted correctly, the flame should be light blue, and the inner flame should be clear.
The size of flame depends on the position of the related control knob.
-Burner ON,large flame -Burner ON,small flame（saving mode）-Burner OFF
Fig.8
See fig.8 for various operating options (flame size selection); the burner should be set at a large flame
during the initial phase of cooking, it make food boil quickly. Then should turn knob to the saving flame
position to maintain the cooking. It is possible to adjust the flame size stepless.
It is prohibited to adjust the flame between the Burner OFF and Burner ON large flame positions.
High quantity of energy can be conserved if the hob is used correctly, parameters are designed correctly,
and appropriate cookware is used. The energy conservation be as follows：
· Up to 60% are conserved when proper pots are used,
· Up to 60% are conserved when the unit is operated correctly and the suitable flame size is chosen.
It is a prerequisite for efficient and energy-saving operation of hob that the burners are kept clean at all
times (in particular the flame slots and nozzles). Adapting to different types of gas

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TABLE 3: Adapting to different types of gas
Burner NG
Pressure Nozzle
diameter Nominal Charge Reduced Charge
mbar 1/100mm g/h l/h BTU kcal/h BTU kcal/h
Auxiliary
NG 12.5 75 — 76 3413 702 1365 344
LPG 25 53 66.5 — 3413 702 1365 344
Semi-rapid
NG 12.5 100 — 134 5972 1268 2048 516
LPG 25 68 119 — 5972 1268 2048 516
Rapid
NG 12.5 115 — 183 9385 1694 3072 774
LPG 25 79 156 — 9385 1694 3092 774
Triple-ring wok
NG 12.5 130 — 260 11262 2374 5120 1290
LPG 25 93 224 — 11262 2374 5120 1290
NOTICE：
A. Prior to installation, ensure that the local distribution condition (nature of the gas pressure) and the
adjustment of the appliance are compatible.”
B. “The adjustment conditions for this appliance are stated on the rating label.”
C. “This gas hob is not connected to combustion products evacuation device. It shall be installed and
connected in accordance with current installation regulations. Particular attention shall be given to the
relevant requirement regarding ventilation.”
D. “CAUTION: The use of a gas hob lead to the production of heat, moisture and products of combustion in
the room in which it is installed. Ensure that the kitchen is well ventilated especially when the hob is in
working: keep natural ventilation holes open or install a mechanical ventilation device. ”
Customer Service
If you have any other questions on our appliance or service please leave your message in our Customer
Questions & Answers in the website or contact seller. We will reply as soon as we receive the question.