Blue Seal Evolution Series User manual

Revision 1/
Blue Seal Evolution Series Gas Pasta Cookers G47 © Moffat Ltd, January 007
Service Manual
Pasta Cookers
G47

Revision 1/
Blue Seal Evolution Series Gas Pasta Cookers G47 © Moffat Ltd, January 007
ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY
QUALIFIED PERSONS ONLY.
WARNING:
MAKING ALTERATIONS MAY VOID WARRANTIES AND APPROVALS. IMPORTANT:

Revision 1/
Blue Seal Evolution Series Gas Pasta Cookers G47 © Moffat Ltd, January 007
This manual is designed to take a more in depth look at the G47 Pasta Cookers for the purpose of making
the units more understandable to service people.
There are settings explained in this manual that should never require to be adjusted, but for completeness
and those special cases where these settings are required to change, this manual gives a full explanation
as to how, and what effects will result.
Section Page Number
1. Specifications............................................................................................1
. Installation................................................................................................3
3. Operation...................................................................................................8
3.1 Description of Controls
3. Explanation of Control System
4. Cleaning and Maintenance......................................................................10
4.1 Cleaning
4. Routine Maintenance
5. Trouble-shooting Guide...........................................................................14
5.1 Trouble-shooting Chart
5. Fault Diagnosis
6. Service Procedures..................................................................................18
6.1 Access
6. Replacement
6.3 Adjustment / Calibration
7. Accessories.............................................................................................. 4
8. Exploded Parts Diagrams ....................................................................... 5
9. Circuit Schematics................................................................................... 8
10. Service Contacts...................................................................................... 9
Appendix A: Gas Type Conversion.................................................................31
Appendix B: Gas Specifications......................................................................34
Contents

Revision 1/
Blue Seal Evolution Series Gas Pasta Cookers G47 © Moffat Ltd, January 007

1
1
Specifications
Blue Seal Evolution Series Gas pasta Cooker G47 © Moffat Ltd, January 007
Revision 1/
Dimensions shown in millimetres
Legend
- Gas connection entry point - ¾” BSP male
External dimensions: G47

1 Specifications
Blue Seal Evolution Series Gas Pasta Cooker G47 © Moffat Ltd, January 007
Revision 1/
Natural Gas LP Gas (Propane)
Input Rating 46 MJ/hr 47 MJ/hr
(N.H.G.C.) (44,547 Btu/hr) (44,547 Btu/hr)
Supply Pressure 1.13 - 3.40 kPa .75 - 3.40 kPa
(4.5" - 13.5" w.c.) (11" - 13.5" w.c.)
0.9 kPa (*) .6 kPa (*)
(3.7” w.c.) (10. " w.c.)
Gas Connection ¾” BSP Male
Burner Operating Pressure
Natural Gas (G 0) Propane (G31)
Nominal Reduced Nominal Reduced
Heat Input (nett) 1 .0 kW 5.4 kW 1 .5 kW 6. kW
Gas Rate 1. 7 m3/hr 0.4 m3/hr 0.97 kg/hr 0.48 kg/hr
Supply Pressure 0 mbar 37 mbar
Burner Operating Pressure 9.5 mbar (*)
Gas Connection 3/4” BSP Male
7.7 mbar (*)
Gas supply (Non-UK models)
Natural Gas LPG / Propane
Main Burners 3.10mm 1.90mm
Pilot Burners (Non-UK models) 0.6 mm 0.35mm
Pilot Burners (UK models) 0.45mm 0.30mm
Water capacity 40l
Useable internal dimensions of
tank (width x length)
Useable depth of water
Water supply
Tank capacity
Injector sizes
Gas supply (UK models)
Water connection ½” tube
Maximum water supply pressure 550 kPa (80psi)

Installation
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Installation Requirements
NOTE:
• It is most important that this appliance is installed correctly and that operation is
correct before use. Installation shall comply with local, gas, health and safety
requirements.
• This appliance shall be installed with sufficient ventilation to prevent the occurrence
of unacceptable concentrations of health harmful substances in the room, the
appliance is installed in.
Blue Seal pasta cookers are designed to provide years of satisfactory service and correct installation is
essential to achieve the best performance, efficiency and trouble-free operation.
This appliance must be installed in accordance with National installation codes and in addition, in
accordance with relevant National / Local codes covering gas and fire safety.
AUSTRALIA: - AS5601 - Gas Installations.
NEW ZEALAND: - NZS5 61 - Gas Installation.
UNITED KINGDOM: - Gas Safety (Installation & Use) Regulations 1998.
- BS6173 - Installation of Catering Appliances.
- BS5440 - Parts 1 & Installation Flueing & Ventilation.
IRELAND: - IS 8 0 - Non - Domestic Gas Installations.
Installations must be carried out by qualified service persons only. Failure to install
equipment to the relevant codes and manufacturer’s specifications shown in this section will
void the warranty.
Components having adjustments protected (e.g. paint sealed) by manufacturer, are only
allowed to be adjusted by an authorised service agent. They are not to be adjusted by the
installation person.
Unpacking
• Remove all packaging and transit protection from the appliance including all protective plastic
coating from the door outer panel and exterior stainless steel panels.
• Check equipment and parts for damage. Report any damage immediately to the carrier and
distributor.
• Report any deficiencies to the distributor who supplied the appliance.
• Check that the available gas supply is correct to that shown on the rating plate located on the inside
of the access door.
• Check that the following parts have been supplied with the appliance:
G47
Baskets 4
Basket Trays 1
Location
1. This appliance must be installed in a suitably ventilated room to prevent dangerous build up of
combustion products.
. Installation must allow for a sufficient flow of fresh air for the combustion air supply.
Combustion Air Requirements
3. Position the appliance in its approximate working position.
G47
Natural Gas (G 0) 13 m3/hr
LPG/Propane (G31) 13 m3/hr

Installation
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Blue Seal Evolution Series Gas Pasta Cooker G47 © Moffat Ltd, January 007
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4. All air for burner combustion is supplied from underneath the appliance. The legs must always be
fitted and no obstructions placed on the underside or around the base of the appliance, as
obstructions will cause incorrect operation and / or failure of the appliance.
5. Components having adjustments protected (e.g. paint sealed) by manufacturer are only allowed to
be adjusted by an authorised service agent. They are not to be adjusted by the installation person.
NOTE: Do not obstruct or block the appliances flue. Never directly connect a ventilation
system to the appliance flue outlet.
Clearances
NOTE:
• Only non-combustible materials can be used in close proximity to this appliance.
• In order to facilitate easy operation, drainage and servicing of the appliance, a
minimum of 600 mm clearance should be maintained at the front of the appliance.
Any gas burning appliance requires adequate clearance and ventilation for optimum and trouble-free
operation. The following minimum installation clearances are to be adhered to:
Assembly
This model is delivered completely assembled. Ensure that the adjustable feet / rollers are securely
attached.
NOTE:
• This appliance is fitted with adjustable feet / rollers to enable the appliance to be
positioned securely and level. This should be carried out on completion of the gas
connection. Refer to the “Gas Connection” section overleaf.
• The appliance rear leg housings can be fitted with:-
Adjustable feet to assist with levelling of the appliance on uneven floors.
Rear rollers to enable the appliance to be easily moved for positioning and cleaning
purposes.
Optional Accessories (Refer to Replacement Parts List)
Combustible Surface Non Combustible Surface
Left/Right hand side 50 mm 0 mm
Rear 50 mm 0 mm

Installation
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Fitting of Adjustable Feet / Rear Rollers to the Pasta Cooker
This appliance rear leg mount housings can be fitted with:-
Adjustable feet to assist with levelling of the appliance on uneven floors.
Rear rollers to enable the appliance to be easily moved for positioning and cleaning
purposes.
Rear Adjustable Legs, fitting:-
1. Raise the appliance from the floor by
approximately 75 mm using suitable lifting
equipment (i.e. Palletiser / Forklift) to allow the
rear rollers to be removed.
. Unscrew and remove the securing bolt that
secures the rear roller to the rear leg housing.
3. The rear rollers will drop freely from the rear
leg housings.
4. Screw the rear adjustable feet into the rear leg
housings and tighten hand tight.
5. Lower the appliance back to the floor and
adjust the adjustable feet to level the
appliance.
Rear Rollers, fitting:-
1. Raise the appliance from the floor by
approximately 75 mm using suitable lifting
equipment (i.e. Palletiser / Forklift) to allow the
rear adjustable feet to be removed.
. Unscrew and remove both the rear adjustable
feet from the rear leg housings.
3. Fit the rear roller to the rear leg housing and
align the screw hole in the side of the rear leg
housing with the threaded hole in the rear
roller.
4. Locate the rear roller to the leg support with
the bolt supplied and tighten the bolt using a
10 mm A/F spanner.
5. Fit the second roller and tighten.
6. Lower the appliance back to the floor and
adjust the front adjustable feet to level the
appliance.
Adjustable
Foot
Rear
Roller
Roller
Securing Bolt
Rear Leg
Housing
Fig .1

Installation
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Gas Connection
NOTE: ALL GAS FITTING MUST ONLY BE CARRIED OUT BY A QUALIFIED SERVICE PERSON.
1. Blue Seal Pasta Cookers do not require an electrical connection, they function totally on the gas
supply only.
. It is essential that the gas supply is correct for the appliance to be installed and that adequate
supply pressure and volume are available. The following checks should therefore be made before
installation:-
a. The Gas Type the appliance has been supplied for is shown on
coloured stickers located above the gas entry point and next to
the rating plate. Check that this is correct for the gas supply
the appliance is being installed for. The gas conversion
procedure is detailed in this manual.
b. Supply Pressure required for this appliance is shown in the
“Specifications” section of this manual. Check the gas supply to
ensure that adequate supply pressure exists.
c. Input Rate of this appliance is also stated on the Rating Plate
fitted to the inside of the access door and in the
“Specifications” section of this manual. The input rate should
be checked against the available gas supply line capacity.
Particular note should be taken if the appliance is being
added to an existing installation.
NOTE: It is important that adequately sized piping runs directly to the connection joint on the
appliance, with as few tees and elbows as possible to give maximum supply volume.
3. A suitable joining compound which resists the breakdown action of LPG must be used on every gas
line connection, unless compression fittings are used.
The connection to the appliance is 3/4” BSP male.
NOTE: A Manual Isolation Valve must be fitted to the individual appliance supply line.
4. Correctly locate the appliance into its final operating position and using a spirit level, adjust the legs
so that the unit is level and at the correct height.
5. Connect the gas supply to the appliance.
6. Check gas operating pressure to as shown in the “Specifications” section. If the pressure is
incorrect, adjust the pressure by adjusting the regulator screw of the gas control valve as shown in
the ‘Gas Conversion and Specifications’ section.
7. Check all gas connections for leakages using soapy water or other gas detecting equipment.
NOTE: The operating pressure is to be measured at the Burner Operating Pressure test point
on the gas control valve, this is to be carried out with the burner operating at the 'High
Flame' setting. The operating pressure is ex-factory set, through the appliance
regulator and not to be adjusted, apart from when carrying out gas conversion, if
required. Refer to the ‘Gas Conversion and Specification’ Section for further details .
Rating Plate
Location
Fig .
WARNING:
DO NOT USE A NAKED FLAME TO CHECK FOR GAS LEAKAGES .

Installation
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Blue Seal Evolution Series Gas pasta Cooker G47 © Moffat Ltd, January 007
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8. Turn ‘OFF’ the mains gas supply and bleed the
gas out of the appliance gas lines.
9. Turn ‘ON’ the gas supply and the appliance.
10. Verify the operating pressure remains correct
11. Check the pilot flame size. (Re-adjust if
required by changing the pilot injector. Refer
to the Gas Conversion Section).
Water Connection
NOTE: The water connection shall be installed in accordance with local water regulations in
force and the applicable standard/code, e.g. EN 1717 in UK / Ireland, PCA in Australia.
A cold water supply must be connected to the water inlet connection (R 1/" BSP), located 50 mm from the
LH side, 555 mm from rear and 135 mm from the floor.
The water inlet pressure must be as follows:-
Minimum water supply pressure 150 kPa ( psi).
Maximum water supply pressure 50 kPa (36 psi).
Drainage Connection
• The water is drained from the appliance by means of a valve located behind the front control panel.
• A waste water tundish must be fitted below the appliance drain outlet. This should be a minimum of
1 7 mm (5”) major diameter.
• If required the drain outlet can be extended in order to exit above the tundish. All drain piping must
be with materials suitable for conveying boiling water.
• Drain connection is R1" BSP drain / overflow.
Commissioning
The following commissioning checks must be carried out before the pasta cooker is handed
over for use, to ensure that the unit operates correctly and the operator(s) understand the
correct operating procedure.
1. Before leaving the new installation;
a. Check the following functions in accordance with the operating instructions specified in the
“Operation” section of this manual.
• Light the Pilot Burner.
• Light the Main Burner.
b. Ensure that each operator has been instructed in the areas of correct lighting, operation, and
shutdown procedures for the appliance.
. This manual must be kept by the owner for future reference and a record of Date of
Purchase
, Date of Installation and Serial Number of Unit recorded and kept with this
manual. (These details can be found on the Rating Plate attached to the inner R/H side
of the front access door panel. Refer to Figure 1 in the 'Installation' section).
NOTE: If for some reason it is not possible to get the appliance to operate correctly, shut off
the gas supply and contact the supplier of this unit.
Fig .3
Gas Control
Valve
Burner Operating
Pressure Test Point

3 Operation
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Blue Seal Evolution Series Gas Pasta Cooker G47 © Moffat Ltd, January 007
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Burner Control
OFF Position
PILOT Burner
HIGH Flame
LOW Flame
Gas Control Knob
Piezo Igniter
(Behind Access Door)
Water Control Valve
3.1 Description of controls

3
Operation
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3. Explanation of Control
System
Safety System
The purpose of the safety system is to shut off
the flow of gas if the pilot flame goes out. It is
comprised of the flame itself, the thermocouple,
and the flame failure gas valve.
The pilot flame is lit by holding in the gas
control knob, which in turn temporarily pushes
the plunger inside the safety valve open and
allows gas to flow through. Once the burner is
lit, the thermocouple will begin to generate
millivolts (after about 10 to 30 seconds of being
heated) and will energize the electromagnet
inside the gas valve. Once energized the
electromagnet holds the plunger inside the gas
valve in the open position. The plunger has to
have been pushed all the way in for the
electromagnet to be able to hold it in place. If
the burner flame goes out for some reason, the
thermocouple will cool after about 10 to 30
seconds and stop generating millivolts. The
electromagnet will then de-energize, and the
plunger will snap shut, cutting off the flow of gas.
Detail of each component in the safety system is
explained below.
into a fitting at the back of the gas valve to make
an electric connection. By pressing in the gas
control knob, the plunger can be temporarily held
open while lighting. There's two reasons for this;
gas has to flow through the safety valve to make
it possible to light the pilot burner, and secondly
the plunger has to be pushed all the way in for
the electromagnet to hold it in. I.e.; the
electromagnet is strong enough to hold the
plunger in once there, but is not strong enough
to pull it in by itself. Sometimes a problem with
the flame not staying lit after releasing the button
can be attributed to not pushing the plunger all
the way in.
This millivolt circuit is interrupted by a safety cut-
out thermostat. If the cut-out trips it cuts the
millivolt supply to the pilot valve magnet, thereby
shutting off the burners. The pasta cooker is then
inoperable until the cut-out has cooled below
100°C. The purpose of this is to shut off the
burners should the tank run dry.
The Troubleshooting Guide (Section 5) should be
used to identify any incorrect operation. On
correct identification of the operating fault the
Troubleshooting Guide will make reference to the
corrective action required, or refer to the Fault
Diagnosis section and/or Service section to assist
in correction of the fault.
The tip of the thermocouple is located in the pilot
burner flame, and the nut at the other end of the
thermocouple screws into the back of the gas
valve. Inside the copper tubing is a wire which is
joined at the tip but insulated from the rest of the
tubing. These two parts (the copper tubing and
wire) make up the "wiring" for an electrical
circuit. When these two dissimilar metals, wire
and tip, are heated an electrical voltage is
produced. This type of thermocouple generates
between 7 and 30 millivolts when heated in the
pilot flame.
holds the plunger in, allowing gas to flow through
the valve. When the electromagnet is
de-energized, the plunger snaps to the closed
position, stopping the flow of gas.
Millivolts are provided to the electromagnet by
the thermocouple (not shown) which generates
millivolts when heated. The thermocouple screws
Figure 3. a
Figure 3. b
Thermocouple
Gas flow
Electromagnet
Plunger
Shaft
Knob
Gas flow Plunger
Insulator Nut Conductor Tip
Interna
l Wire
Thermocouple
The thermocouple is a device that generates
electricity when heat is applied to the tip.
Electromagnetic Flame Failure Gas Valve
The purpose of the safety valve is to shut off the
flow of gas if the pilot flame goes out.
Inside the body of the gas valve is an
electromagnet connected to a spring loaded
plunger. When the electromagnet is energized, it
Control Knob

4 Cleaning / Maintenance
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Blue Seal Evolution Series Gas Pasta Cooker G47 © Moffat Ltd, January 007
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General
Clean the pasta cooker regularly. A clean pasta cooker looks better, will last longer and will perform
better. A dirty pasta cooker will hinder the transfer of heat from the cooking surface to the food.
This will result in loss of cooking efficiency.
NOTE:
• DO NOT clean the appliance using high pressure water or steam jets.
• DO NOT pour water directly over the appliance.
• DO NOT use wire brushes. Clean the pan regularly after each use.
• DO NOT use combustible liquids to clean the appliance.
• DO NOT use harsh abrasive detergents, sharp scrapers, strong solvents or caustic
detergents as they will damage the appliance.
• DO NOT use any chloric or bleaching detergents to clean the appliance.
• Ensure that any detergent or cleaning material have been completely removed after
each cleaning.
• DO NOT use saline or sulfuric acid preparations for descaling the appliance.
• Ensure that protective gloves are worn during the cleaning process.
• Clean the pan regularly after each use.
Draining and Cleaning
Opening the Drain Valve
a. Lift the locking slide on valve handle (Fig 4.1a) to release the valve.
b. While holding the locking slide in the withdrawn position, rotate the handle anticlockwise (Fig
4.1b) to open the valve.
c. When the valve is closed, slide the locking slide down over the locking valve to prevent accidental
opening of the valve as shown in Fig 4.1a.
CAUTION:
Always turn off the gas supply at the mains supply before cleaning.
This appliance is not water proof.
Do not use water jet spray to clean interior or exterior of this appliance.
WARNING:
DO NOT USE FLAMMIBLE SOLVENTS AND CLEANING AIDS ON OR IN CLOSE PROXIMITY TO THE PASTA COOKER
WHILST THE COOKER IS STILL HOT.
CAUTION:
If cleaning detergents are allowed to enter the inner parts of the appliance,
rusting will occur on the pipe work, installation elements, heating
elements, gas fittings and electrical components, this will cause premature
failure of the appliance.
4.1 Cleaning

4
Cleaning / Maintenance
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After Each Use
1. Clean the interior of the pan regularly after each use. Do not use wire brushes on the pan. Clean
using a mild detergent and a hot water solution using soft cloth or a soft bristled brush. Dry the ap-
pliance thoroughly using a dry clean cloth.
Daily Cleaning
1. The water should be drained and re-filled regularly. Open the drain valve slowly to minimise
splashing. Waste water will drain into the tundish fitted below the appliance drain outlet.
. When the tank is empty, open the drain valve fully and check for any particles or residue lodged in
the valve. Clean out with a stiff nylon brush. Do not use wire brush or metal rods as these damage
the seating in the valve and will eventually lead to valve leakage.
3. If the obstruction in the valve cannot be removed with a brush, use a wooden probe to dislodge any
obstruction.
4. Clean the interior and exterior of the pan regularly at the end of each day. Do not use wire brushes
on the pan. Clean using a mild detergent and a hot water solution using soft cloth or a soft bristled
brush. Dry the appliance thoroughly using a dry clean cloth.
5. Once the daily cleaning operation is completed, ensure that the drain valve has been closed.
6. At the end of each day or at the end of each shift, clean the exterior of the pasta cooker using a mild
detergent and a hot water solution using soft cloth or a soft bristled brush.
Locking Slide
Fig 4.1b
Fig 4.1a
Locking Slide
WARNING:
HOT WATER WILL SCALD - DO NOT RUSH THIS JOB.
WARNING:
DO NOT ATTEMPT TO MOVE THE PASTA COOKER WHILST THE COOKER IS FULL OF WATER.
BEFORE ATTEMPTING TO MOVE THE PASTA COOKER, ENSURE THAT ALL THE WATER HAS
BEEN DRAINED FROM THE TANK. REFER TO THE INFORMATION ON THE PREVIOUS PAGE
ON HOW TO DRAIN THE WATER FROM THE PASTA COOKER.

4 Cleaning / Maintenance
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Blue Seal Evolution Series Gas Pasta Cooker G47 © Moffat Ltd, January 007
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Weekly Cleaning
NOTE:
• If the pasta cooker usage is very high, we recommend that the weekly cleaning
procedure is carried out on a more frequent basis.
• Ensure that protective gloves are worn during the cleaning process.
• DO NOT use harsh abrasive detergents, strong solvents, sharp scrapers or caustic
detergents as they will damage the surface of the pasta cooker.
• Ensure that the water circuit is free of ferrous particles. Any such particles deposited
in the bottom of the tank may cause it to rust.
Thoroughly clean the interior and exterior of the pasta cooker regularly. Do not use wire brushes on the
pan. Clean using a mild detergent and a hot water solution using soft cloth or a soft bristled brush. Dry
the appliance thoroughly using a dry clean cloth.
NOTE: In order to prevent the forming of rust on the steel components, ensure that the deter-
gent or cleaning material has been entirely removed after each cleaning process.
Stainless Steel Surfaces
a. Clean the interior and exterior surfaces of the pasta cooker with hot water, a mild detergent
solution and a soft scrubbing brush. Note that the gas control knobs are a push fit onto the gas
and water control valve spindles and can be removed to allow cleaning of the front of the control
panel.
b. Baked on deposits or discolouration may require a good quality stainless steel cleaner or stainless
steel wool. Always apply cleaner when the appliance is cold and rub in the direction of the grain.
c. Dry all components thoroughly with a dry cloth and polish with a soft dry cloth.
Periodic Maintenance
NOTE: All maintenance operations should only be carried out by a qualified service person.
To achieve the best results cleaning must be regular and thorough and all controls and mechanical parts
should be checked and adjusted periodically by a qualified service person. If any small faults occur, have
them attended to promptly. Don't wait until they cause a complete breakdown. It is recommended that
the appliance is serviced every 6 months.
If the appliance is not used for long periods, close the gas shut-off valve upstream of the appliance and
clean the appliance thoroughly.
The appliance should be inspected and the gas exhaust flue cleaned by an authorized service person at
least every 6 months.
WARNING:
DO NOT ATTEMPT TO MOVE THE PASTA COOKER WHILST THE COOKER IS FULL OF WATER.
BEFORE ATTEMPTING TO MOVE THE PASTA COOKER, ENSURE THAT ALL THE WATER HAS
BEEN DRAINED FROM THE TANK. REFER TO THE INFORMATION ON THE PREVIOUS PAGE
ON HOW TO DRAIN THE WATER FROM THE PASTA COOKER.

4
Cleaning / Maintenance
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BLUE SEAL PASTA COOKERS - MAINTENANCE SCHEDULE
Business Name and Address:
Date: Service Report No.
Phone: Fax:
Serial No:
Clients Order No. Serviceman:
Model: Blue Seal G47 Remarks
1 Inspect exterior condition of unit.
Check working gas pressure, correct to rating plate Pressure kPa
3 Check for gas leaks
4 Check pilot flame, adjust as required
5 Check burner operation
6 Inspect thermocouple
7a Check millivolt of thermocouple to safety cut-out mV
7b Check millivolt of thermocouple to valve mV
Service Comments:
Additional work/repairs required:
Customers approval:
Name (print): Title:
Customers signature: Date:
8 Inspect is clean and free from blockages
9 Check piezo ignition of pilot
10 Check flue for build up of foreign objects
Suggestion: Photocopy this form and keep on file for continued use.
4. Routine Maintenance

5 Trouble-shooting
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ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY
QUALIFIED PERSONS ONLY.
WARNING:
Fault Possible Cause Remedy
Piezo ignitor not sparking Short in high tension lead.
(Refer fault diagnosis 5. . )
Piezo faulty.
(Refer fault diagnosis 5. . )
Replace lead.
(Refer service section 6. .11)
Replace piezo.
(Refer service section 6.3.10)
Pilot won’t light No gas supply
Gas pressure too low.
Knob on gas control won’t go
fully in.
Blocked pilot spud.
Ensure gas is connected and on
and bottles not empty.
Check gas supply pressure.
(Refer specifications section)
Remove obstruction. Correct
control / wrapper mounting.
Replace gas control.
(Refer service section 6.3.10)
Clean or replace pilot spud.
(Refer service section 6. .3)
Pilot goes out when knob released Releasing knob before the
thermocouple heated.
Pilot flame too small.
(Refer fault:Pilot Flame small)
Thermocouple faulty.
(Refer fault diagnosis 5. .1)
Safety cut-out thermostat faulty.
(Refer fault diagnosis 5. .1)
Gas control valve faulty
Hold control in for longer (10 s),
see if pilot will stay lit.
Correct fault.
Replace thermocouple.
(Refer service section 6. .1)
Replace safety cut-out
thermostat.
(Refer service section 6. .5)
Replace gas control magnet
Pilot flame small Gas pressure too low.
Pilot injector restricted.
Check gas supply pressure.
(Refer specifications section)
Clean pilot injector.
(Refer service section 6. .3)
5.1 Trouble shooting chart

5
Trouble-shooting
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Fault Possible Cause Remedy
Pilot goes out when main burner
comes on
Incorrect gas pressure.
Faulty gas control.
Check supply / adjust pressure.
(Refer specifications section)
Replace gas control.
(Refer service section 6. .8)
Pilot goes out while in use. Gas supply - incorrect or
fluctuating pressure.
Draught at installation (blowing
pilot out).
Thermocouple faulty.
(Refer fault diagnosis 5. .1)
Safety cut-out thermostat faulty.
(Refer fault diagnosis 5. .1)
Main gas control valve faulty.
Check supply / adjust pressure.
Shield pasta cooker from
excessive breeze
Replace thermocouple.
(Refer service section 6. .1)
Replace safety cut-out thermostat.
(Refer service section 6. .5)
Replace gas control magnet.
Main burner will not light Incorrect supply pressure.
Wrong size or blocked injector.
Small pilot flame.
(Refer fault:Small Pilot Flame)
Faulty gas control.
(Refer fault diagnosis 5. .3)
Check supply correct pressure.
Replace / clean injector.
(Refer service section 6. .6)
Correct fault.
Replace gas control.
(Refer service section 6. .8)
Pilot flame yellow / lazy Gas pressure incorrect.
Restriction in pilot spud or
aeration.
Check gas supply pressure.
(Refer specifications section)
Clean or replace as required.
(Refer service section 6. .3)
Burner does not burn correctly
(roar / light back / incorrect
colour)
Incorrect supply pressure.
Incorrect injector size.
Burner faulty.
Check supply pressure.
Check injector size and replace if
necessary.
(Refer service section 6. .3)
Replace burner.
(Refer section 6. .8)

5 Trouble-shooting
16
Blue Seal Evolution Series Gas Pasta Cooker G47 © Moffat Ltd, January 007
Revision 1/
5. Fault Diagnosis
5. .1 Pilot drops out
Pilot flame too small
If the pilot can be lit but the flame is too small to
impinge on the thermocouple, then check the gas
pressure. If ok, then remove the pilot injector
from the pilot burner and check for blockages
and/or correct size.
Figure 5. .1a
Thermocouple faulty
Check the thermocouple connection is firm and
the safety cut-out lead connection to the inter-
rupter block on the thermocouple is secure.
(Loose connections will cause resistance in
millivolt circuit and result in pilot outage.
If all connections OK, then light the pilot, and
whilst holding the control knob in, measure the
voltage from the pilot side of the connecter block
to earth (e.g the body of the control valve). This
should read approximately 30mV. If this reading
is less than 0mV and there is good impingement
of the pilot flame onto the thermocouple, then
the thermocouple is faulty - replace.
Figure 5. .1b
Pilot side of interrupter block
Control valve
Pilot burner
Figure 5. .1d
5. . Piezo ignitor not sparking
Short in high tension lead
If repeated sparking of the piezo shows only
intermittent sparking at the electrode, then the
lead should be traced to find area of short. This
can be visually seen as the spark arks. If the lead
is shorting the best solution is to replace it, as the
electrical insulation of the lead may have
deteriorated.
If the spark arc can be seen at the electrode in-
sulator at the pilot burner instead of at the
electrode tip, then the insulator probably has a
fracture and should be replaced
Safety cut-out tripped
The safety cut-out is set at 115 °C. If there is
water in the tank and the safety cut-out has
tripped (open circuit) then the safety cut-out is
faulty.
Safety cut-out faulty
To check if the safety cut-out is faulty hold in the
gas control button and light the pilot (leaving the
control button depressed to keep the pilot alight).
With a multimeter measure the voltage from the
gas control side of the thermocouple interrupter
block to earth. If the voltage is under 5mV (and
the thermocouple is generating at least 0mV)
then the safety cut-out is faulty—replace. If all of
the above checks out ok then check gas control
or thermocouple.
Gas control side of interrupter block
Control valve