Blue Seal Evolution Series User manual

Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
Gas Chargrills
G592 / G593 / G594 / G596 / G598
Service Manual

Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS
ONLY.
WARNING:
MAKING ALTERATIONS MAY VOID WARRANTIES AND APPROVALS.
IMPORTANT:

Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
Contents
This manual is designed to take a more in depth look at the Blue Seal Chargrills for the purpose of making the units more under-
standable 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 No.
1. Specifications ........................................................................................................................... 1
Gas Supply Requirements
2. Installation ............................................................................................................................... 6
3. Operation................................................................................................................................ 10
3.1 Description of Controls
3.2 Explanation of Control System
4. Maintenance ........................................................................................................................... 12
5. Fault Finding Guide ................................................................................................................ 13
5.1 Fault Finding Chart
5.2 Fault Diagnosis
6. Service Procedures................................................................................................................. 15
6.1 Access
6.2 Replacement
6.3 Adjustment / Calibration
7. Accessories ............................................................................................................................. 21
Accessories
Gas Conversion Kits
Joining Caps
8. Exploded Parts Diagrams ....................................................................................................... 22
8.1 G592 Chargrill
8.2 G593 Chargrill
8.3 G594 / G596 / G598 Chargrills
9. Service Contacts..................................................................................................................... 31
Appendix A: Gas Type Conversion ................................................................................................. 32
Contents

1
1
Specifications
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
Model Numbers Covered in this Specification
G592-B Gas Chargrill, 300mm wide - Bench Model.
G593-[2] Gas Chargrill, 450mm wide.
G594-[2] Gas Chargrill, 600mm wide.
G596-[2] Gas Chargrill, 900mm wide.
G598-[2] Gas Chargrill, 1200mm wide.
NOTE: [2]: LS - On Leg Stand.
B - Bench Models.
Gas Supply Requirements
- Australia
- New Zealand
- United Kingdom
Appliance Classification
Category: II2H3P (20, 30 / 37).
Flue Type: A1.
(*) - Measure burner operating pressure at manifold test point with one burner for G592 and G593 Models or two burners for
other models, operating at full setting. Operating pressure is ex-factory set and is not to be adjusted, apart from when
converting between gases, if required. (Refer to ‘Gas Conversion’ section for details).
Natural Gas LP Gas (Propane)
G592 G593 G594 G596 G598 G592 G593 G594 G596 G598
Input Rating (N.H.G.C.) 33.0 MJ/hr 48.0 MJ/
hr
66.0 MJ/
hr 100.0 MJ/hr 133 MJ/hr 33.0 MJ/hr 48.0 MJ/ hr
66.0 MJ/
hr
100.0 MJ/
hr
133 MJ/
hr
Supply Pressure 1.13 - 3.40 kPa 2.75 - 4.50 kPa
Burner Operating Pressure 1.0 kPa 0.95 kPa (*) 2.5 kPa 2.6 kPa (*)
Gas Connection
1/2” BSP
Male
3/4” BSP Male
1/2” BSP
Male
3/4” BSP Male
Natural Gas LP Gas
G592 G593 G594 G596 G598 G592 G593 G594 G596 G598
Input Rating (N.H.G.C.) 33.0 MJ/hr 48.0 MJ/
hr
66.0 MJ/
hr 100.0 MJ/hr 133 MJ/hr 33.0 MJ/hr 48.0 MJ/ hr
66.0 MJ/
hr
100.0 MJ/
hr
133 MJ/
hr
Supply Pressure 1.13 - 3.40 kPa 2.75 - 4.50 kPa
Burner Operating Pressure 1.0 kPa 0.95 kPa (*) 2.5 kPa 2.6 kPa (*)
Gas Connection
1/2” BSP
Male
3/4” BSP Male 1/2” BSP Male 3/4” BSP Male
Natural Gas (G20) Propane (G31)
G592 G593 G594 G596 G598 G592 G593 G594 G596 G598
Heat Input
(nett)
Nominal 8.8 kW 13.0 kW 18.0 kW 27.0 kW 36.0 kW 8.8 kW 13.0 kW 18.0 kW 27.0 kW 36.0 kW
Re-
duced 3.5 kW 4.2 kW 6.0 kW 9.0 kW 18.0 kW 3.7 kW 4.3 kW 6.4 kW 9.6 kW 12.8 kW
Gas Rate
(nett)
Nominal 0.93 m3/
hr
1.38 m3/
hr
1.90 m3/
hr
2.86 m3/
hr
3.81 m3/
hr
0.68 kg/
hr
1.01 kg/
hr
1.40 kg/
hr
2.10 kg/
hr
2.80 kg/
hr
Re-
duced
0.37 m3/
hr
0.40 m3/
hr
0.63 m3/
hr
0.95 m3/
hr
1.27 m3/
hr
0.29 kg/
hr
0.33 kg/
hr
0.50 kg/
hr
0.75 kg/
hr
0.99 kg/
hr
Supply Pressure 20 mbar 30 / 37 mbar
Burner Operating
Pressure 10.6 mbar 10 mbar (*) 25 mbar 26 mbar (*)
Gas Connection
1/2” BSP
Male ¾” BSP Male
1/2” BSP
Male ¾” BSP Male

2
1
Specifications
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
- All Other Markets
NOTE:
 * Measure burner operating pressure at manifold test point with one burner for G592 and G593 Models or two
burners for other models, operating at full setting.
 NAT, LPG & Butane Only - Operating pressure is ex-factory set and is not to be adjusted, unless when
converting between gases, if required.
 (**) TOWN GAS Only - Adjust burner operating pressure using adjustable gas regulator supplied.
 Refer to ‘Gas Conversion and Specifications' section in this manual for further details.
Natural Gas Town Gas
G592 G593 G594 G596 G598 G592 G593 G594 G596 G598
Input Rating (N.H.G.C.) 33.0 MJ/hr 48.0 MJ/
hr
66.0 MJ/
hr 100.0 MJ/hr 133 MJ/hr 33.0 MJ/hr 48.0 MJ/ hr
66.0 MJ/
hr
100.0 MJ/
hr
133 MJ/
hr
Supply Pressure 1.13 - 3.40 kPa 0.75 - 1.50kPa
Burner Operating Pressure 1.0 kPa 0.95 kPa (*) 0.63kPa (**)
Gas Connection
1/2” BSP
Male
3/4” BSP Male
1/2” BSP
Male
3/4” BSP Male
LP Gas (Propane) LP Gas / Butane
G592 G593 G594 G596 G598 G592 G593 G594 G596 G598
Input Rating (N.H.G.C.) 33.0 MJ/hr 48.0 MJ/
hr
66.0 MJ/
hr 100.0 MJ/hr 133 MJ/hr 33.0 MJ/hr 48.0 MJ/ hr
66.0 MJ/
hr
100.0 MJ/
hr
133 MJ/
hr
Supply Pressure 2.75 - 4.50 kPa 2.75 - 4.50 kPa
Burner Operating Pressure 2.5 kPa 2.6 kPa (*) 2.5 kPa 2.6 kPa (*)
Gas Connection
1/2” BSP
Male
3/4” BSP Male
1/2” BSP
Male
3/4” BSP Male

3
1
Specifications
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
G592-B
NOTE: The G592 is available in Bench Model (- B) Option Only.
G594-B
G596-B
G598-B
G593-B
R

4
1
Specifications
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
= Rating Plate Location for this
option.
R
G593-LS
G594-LS
R

5
1
Specifications
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
G596-LS
G598-LS
R
= Rating Plate Location for
all options.
R

6
2
Installation
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
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 electrical, 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 chargrills 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 / New Zealand: - AS/NZS5601 - Gas Installations.
United Kingdom: - Gas Safety (Installation & Use) Regulations 1998.
- BS6173 - Installation of Catering Appliances.
- BS5440 - 1 & 2 Installation Flueing & Ventilation.
Ireland: - IS 820 - Non - Domestic Gas Installations.
Installations must be carried out by authorised 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 to be adjusted by an
authorised service agent. They are not to be adjusted by the installation person.
Unpacking
 Remove all packaging.
 Check equipment and parts for damage. Report any damage immediately to the carrier and distributor.
 Remove protective plastic coating from the side panels.
 Check that the following parts have been supplied with the chargrill:
1 x Gas Regulator.
1 x Gas Type Conversion Kit.
 Report any deficiencies to the distributor who supplied the chargrill.
 Check that the available gas supply is correct to that shown on the rating plate attached to the underside of the R/H side,
front hob lower trim.
Location
1. Installation must allow for a sufficient flow of fresh air for the combustion air supply.
2. Installation must include adequate ventilation to prevent dangerous build up of combustion products.
3. Never directly connect a ventilation system to the appliance flue outlet.
4. Position the chargrill in its approximate working position.
NOTE: Do not obstruct or block the appliances flue. Never directly connect a ventilation system to the appliance flue
outlet.
G592 G594 G596 G598
Natural Gas 9 m3/hr 18 m3/hr 27 m3/hr 36 m3/hr
LPG / Butane 9 m3/hr 18 m3/hr 26 m3/hr 35 m3/hr
Combustion Air Requirements
Town Gas 9 m3/hr 18 m3/hr 27 m3/hr 36 m3/hr
G593
14 m3/hr
13 m3/hr
14 m3/hr

7
2
Installation
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
Clearances
NOTE: Only non-combustible materials can be used in close proximity to this appliance.
Assembly
Bench Models (G592 Model Only)
1. Check that all the feet are securely fitted.
Bench Models (G593 / G594 / G596 / G598 Models Only)
1. Check that all the feet are securely fitted.
2. Adjust the feet to make the Chargrill steady and level.
Mounting the Chargrill direct onto Bench / Worktop (Non-Combustible materials Only)
NOTE:
 Ensure that the bench / worktop has been suitably modified to accept the gas connection at the rear of the
chargrill.
 Ensure that the bench top surface is made of a non-combustible material.
a. Remove the grates, griddle plates and radians from the chargrill.
b. Lower the chargrill onto it’s rear face.
c. Remove the legs and leg plates from the underside of the chargrill.
d. Lift the chargrill back into the upright position and place onto the bench / worktop.
e. Refit all the grates, griddle plates and radians to the chargrill, ensuring that they are correctly fitted.
Leg Stand Models Only
 Leg Stand Models will require assembly. Refer to the
'Fitting of Adjustable Feet / Rollers to Leg Stand Units'
information below for assembly instructions.
 The rear leg housings can be fitted with:-
a. Adjustable feet to assist with levelling of the appliance on
uneven floors.
b. Rear rollers to enable the appliance to be easily moved for
positioning and cleaning purposes.
c. The front and rear leg mounting points can be removed for
fitting direct onto a bench top work surface etc without legs
fitted.
Optional Accessories (Refer to Replacement Parts List)
 Plinth Kit. For installation details, refer to the instructions supplied with each kit.
Combustible Surface Non Combustible Surface
Left / Right hand side 200mm 0mm
Rear 150mm 0mm
Chargrill
Leg
Leg Plate
Fig 1
G594 128 kg
G596 178 kg
G598 227 kg
G592 62 kg
G593 99.kg
Bench Model Weights (Net)

8
2
Installation
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
Fitting Leg Stand to Chargrill
1. Remove the grates, griddle plates and radiants from the
chargrill.
2. Lower the Chargrill onto it’s rear face.
3. Attach the four hob legs to the leg mounting positions on
the underside of the chargrill. Secure each leg hand tight.
4. Align the four round cut out holes on the base tray with
the four hob legs already fitted to the chargrill (Ensure that
the base tray is orientated with the sloping edge of the
base tray facing the front of the appliance.
5. Slot the base tray onto the four hob legs and push fully
home.
6. Secure the base tray to the front chargrill legs by screwing
the adjustable feet supplied, into the base of the front
chargrill legs. Secure each adjustable foot, hand tight.
7. Fit the rear rollers to the rear leg ring plates and secure
using the locating bolts supplied and tighten bolts using a
10mm spanner.
8. Lift the chargrill back onto its legs.
9. Refit all the grates, griddle plates and radians to the
chargrill, ensuring that they are correctly fitted.
NOTE: This appliance is fitted with adjustable feet / rear
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.
Fig 2
Sloping Edge of
Base Tray
Rear Roller
Base Tray
Chargrill
Legs
Leg Mount
Points
Chargrill
TO PREVENT EQUIPMENT DAMAGE AND RISK OF INJURY, REMOVE ALL CHARGRILL CASTINGS, BURNERS AND OTHER REMOVABLE ITEMS
Warning

9
2
Installation
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
Gas Connection
NOTE: ALL GAS FITTING MUST ONLY BE CARRIED OUT BY AN AUTHORISED PERSON.
1. Blue Seal Chargrills do not require an electrical connection, as they function on the gas supply only.
2. It is essential that the gas supply is correct for the Chargrill to be installed and that adequate supply pressure and volume is
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 these are correct for the gas supply the appliance is being installed for. The gas
conversion procedure is detailed in the ‘Gas Conversion and Specification’ section of this manual.
b. The 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. The Input Rate of this appliance is shown on the Rating Plate and in the ‘Specifications’ section of this manual. The
input rate should be checked against the available supply line capacity. Particular note should be taken if the
Chargrill 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. Fit the gas regulator supplied, into the gas supply line as close to the appliance as possible.
The regulator connections are ¾" BSP female.
The connection is ¾" BSP male.
(Refer to the ‘Specifications’ section for the gas supply location dimensions).
NOTE: The gas pressure regulator provided with this appliance is convertible between Natural Gas and LPG and is already
converted ex-factory to the gas type labelled beside the gas connection point. The regulator outlet pressure is
fixed ex-factory and it is NOT to be adjusted.
4. A suitable joining compound which resists the breakdown action of LPG must be used on every gas line connection, unless
compression fittings are used.
NOTE: A manual isolation valve must be fitted to the individual appliance supply line.
5. 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.
6. Connect the gas supply to the appliance.
7. Check gas operating pressure is as shown in ‘Specifications’ section.
8. Check all gas connections for leakages using soapy water or other gas detecting equipment.
NOTE: The operating pressure to be measured at the manifold test point
and with two burners operating at the ‘High Flame’ setting. (With
the exception of the G592 and G593 models which have one
burner only).
Commissioning
1. Before leaving the new installation;
a. Check the following functions in accordance with the operating
instructions specified in the ‘Operation’ section of the User manual
supplied with the appliance.
 Light the Pilot Burner.
 Light the Main Burner.
 Check the Low Fire Burner Operation.
 Check the High Fire Burner Operation.
a. Ensure that the operator has been instructed in the areas of correct lighting, operation, and shutdown procedure for the
appliance.
2. The User 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 the manual. (These details can be found on the rating plate
attached to the underside of the R/H side, front hob lower trim. (Refer to the ‘Specifications’ section).
NOTE: If it is not possible to get the appliance to operate correctly, contact the appliance supplier.
Fig 3
Manifold
Test Point
DONOT USE ANAKED FLAME TO CHECK FOR GAS LEAKAGES.
Warning

10
3
Operation
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
NOTE: A full user’s operation manual is supplied with the product and can be used for further referencing of installation,
operation and service information.
Gas Control Knobs
OFF Position
PILOT Burner
HIGH Flame
LOW Flame
Piezo Igniter (with burner
flame viewing ports).
3.1 Description of Controls

11
3
Operation
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
3.2 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 be pushed
all the way in for the electromagnet 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.
Thermocouple
The thermocouple is a device that generates electricity when
heat is applied to the tip.
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.
By pressing in the gas control knob, the plunger can be
temporarily held open while lighting. There are 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 type of thermocouple generates between 7 and 30
millivolts when heated in the pilot flame.
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 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 into a fitting at the back of
the gas valve to make an electric connection.
Figure 3.2a
Figure 3.2b
Thermocouple
Gas flow
Electromagnet
Plunger
Shaft
Knob
Gas flow Plunger
Insulator Nut Conductor Tip
Internal
Wire

12
4
Maintenance
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
BLUE SEAL CHARGRILLS - MAINTENANCE SCHEDULE
Business Name and Address:
Date: Service Report No.
Phone: Fax:
Serial No:
Clients Order No. Serviceman:
Model: Remarks
1 Inspect exterior condition of unit.
2 Check working gas pressure correct to rating plate. Pressure;_____ kPa
3 Check pilot flames / correct size.
4 Check all burner ports light. Remove blockages if any.
5 Check burner aeration shutters are adjusted to achieve correct flame.
6a Inspect thermocouples.
6b Replace thermocouples (every 12 months).
7 Check injectors are clean and free from blockages.
8 Re-grease gas valves.
9 Check for gas tightness.
10 Check for gas leaks.
11 Check piezo ignition of pilots.
Service Comments:
Additional work / repairs required:
Customers Approval:
Name (print): Title:
Customers Signature: Date:
NOTE: A full user’s operation manual is supplied with the product and can be used for further referencing of installation,
operation, cleaning and service information.
It is recommended that this form is photocopied and kept on file for continued use.

13
5
Fault Finding
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
Fault Possible Cause Remedy
Pilot won’t light Gas pressure incorrect.
Pilot injector blocked / incorrect size.
Piezo ignitor faulty.
(Refer Fault Diagnosis 5.1.1)
Check gas pressure and adjust if neces-
sary.
Check injectors and replace if necessary.
Replace piezo ignitor.
(Refer Service section 6.2.7).
Pilot drops out when knob released Releasing knob before thermocouple is
heated.
Faulty thermocouple.
(Refer Fault Diagnosis 5.1.2)
Pilot injector blocked / incorrect size.
Gas control valve magnet faulty.
(Refer Fault Diagnosis 5.1.2)
Hold control in for longer, see if pilot will
stay alight.
Replace thermocouple.
(Refer Service section 6.2.1).
Check injectors and replace if necessary.
Replace gas control valve magnet.
(Refer Service section 6.2.10).
Pilot goes out when main burners come on Incorrect gas pressure.
Faulty thermocouple.
(Refer Fault Diagnosis 5.1.2)
Faulty gas control valve.
Check supply / adjust pressure.
Replace thermocouple.
(Refer Service section 6.2.1).
Replace gas control valve.
(Refer Service section 6.2.9).
Main burners will not light Wrong size or blocked main injectors.
Faulty gas control valve.
Incorrect supply pressure.
Replace / clean main injectors.
(Refer Service section 6.2.6).
Replace gas control valve.
(Refer Service section 6.2.9).
Check supply pressure.
Burner goes out while in use Incorrect or fluctuating gas pressure.
Small pilot flame, pilot injector blocked or
incorrect size.
Main injector blocked / incorrect size.
Check gas pressure and adjust if
necessary.
Check pilot injector and replace if
necessary.
(Refer Service section 6.2.2).
Check main injectors and replace if
necessary.
(Refer Service section 6.2.6).
Burner flame incorrect colour (yellow) Burner aeration incorrectly set. Adjust burner aeration.
Gas control stiff to operate Gas control requires re-greasing. Re-grease gas control.
(Refer Service section 6.3.1).
5.1 Fault Finding Chart

14
5
Fault Finding
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
5.2 Fault Diagnosis
5.2.1 Pilot Will Not Light
Short in High Tension Lead
If repeated sparking of the piezo shows intermittent sparking at
the electrode, the HT lead should be traced to find area of
short. This can normally be visually seen as the spark arcs. If
the HT lead is shorting, replace it, as the electrical insulation
strength of the HT lead may have deteriorated.
If the spark arc can be seen at the electrode insulator at the
pilot burner instead of at the electrode tip, then the insulator
probably has a fracture and should be replaced.
Piezo Ignitor Faulty
If no spark at all can be generated, remove piezo ignitor and
hold ignitor close to cabinet body, depress piezo ignitor and if a
spark cannot be generated to cabinet body, the piezo ignitor is
faulty and should be replaced.
NOTE: If piezo ignition fails, the pilots can be manually
lit using a standard taper torch, matches or
lighter, until the piezo circuit is repaired.
5.2.2 Pilot Drops Out
Pilot Flame Too Small
If the pilot can be lit but the flame is too small to impinge on
the thermocouple, check the gas pressure. If gas pressure is
correct, remove pilot injector from pilot burner and check for
blockages and / or correct pilot injector size.
Thermocouple Faulty
Check the thermocouple connection to the gas control is firm
(loose connections will cause resistance in the millivolt circuit
and result in pilot outage).
If connection is satis, disconnect thermocouple from gas con-
trol, light the pilot and, whilst holding the control knob in,
measure voltage between thermocouple and earth (e.g. the
body of the gas control). This should read approx. 30mV. If
this reading is less than 10mV, the thermocouple is faulty -
replace thermocouple.
Gas Magnet Faulty
If thermocouple millivoltage is above 10mV and the pilot still
will not hold, gas magnet is faulty - replace gas magnet.

6
Service Procedures
15
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
Section Page No.
6.1 Access .................................................................................................................................... 16
6.1.1 Control Panel ............................................................................................................................................... 16
6.2 Replacement........................................................................................................................... 16
6.2.1 Thermocouple .............................................................................................................................................. 16
6.2.2 Pilot Injector ................................................................................................................................................ 17
6.2.3 Spark Electrode............................................................................................................................................ 17
6.2.4 Pilot Burner.................................................................................................................................................. 17
6.2.5 Main Burner ................................................................................................................................................. 18
6.2.6 Main Burner Injector..................................................................................................................................... 18
6.2.7 Piezo Ignitor ................................................................................................................................................ 18
6.2.8 H.T Lead...................................................................................................................................................... 18
6.2.9 Gas Control Valve......................................................................................................................................... 19
6.2.10 Gas Control Magnet ...................................................................................................................................... 19
6.3 Adjustment / Calibration ....................................................................................................... 20
6.3.1 Gas Control Re-Greasing............................................................................................................................... 20
6.3.2 Low Fire Rate Adjustment ............................................................................................................................. 20
ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS
ONLY.
ENSURE GAS SUPPLY IS SWITCHED OFF BEFORE SERVICING
ALWAYS CHECK / TEST FOR GAS LEAKS AFTER SERVICE REPAIRS ON THE GAS SYSTEM
WARNING:

6
Service Procedures
16
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
Figure 6.2.1a
6.2 Replacement
6.2.1 Thermocouple
Figure 6.1.1
6.1.1 Control Panel
6.1 Access
1. Remove control knobs by pulling knobs firmly away from
control panel.
2. Remove 2 screws securing control panel to chargrill.
3. Panel can now be removed from unit.
4. The H.T leads may need to be disconnected if control
panel is to be moved away from the chargrill.
1. Remove control panel (refer 6.1.1).
2. Undo thermocouple from pilot assembly.
3. Undo the thermocouple from the gas control. The
thermocouple can now be removed.
4. Replace and re-assemble in reverse order.
Figure 6.2.1b
Screws
Thermocouple
Connection
Thermocouple
Pilot Assembly

6
Service Procedures
17
Amendment 8
© Copyright Moffat Ltd, May 2015
Blue Seal Evolution Series Gas Chargrills
Figure 6.2.4a
6.2.4 Pilot Burner
6.2.2 Pilot Injector
1. Remove control panel (refer 6.1.1).
2. Remove pilot supply tube from pilot burner.
3. Remove injector and clean or replace as required.
NOTE: Ensure that correct size injector is re-fitted to the
unit (refer to Specifications section).
Figure 6.2.2
1. Remove control panel (refer 6.1.1).
2. Remove thermocouple, piezo, pilot supply tube and injec-
tor from the pilot burner.
3. Remove the two screws securing the pilot burner
assembly to the chargrill.
Figure 6.2.4b
Thermocouple
Pilot Supply Tube
Piezo HT Lead
Two Screws
Pilot Injector
6.2.3 Spark Electrode
1. Remove control panel (refer 6.1.1).
2. Remove the HT lead from spark electrode.
3. Remove spark electrode from pilot burner.
4. Replace and re-assemble in reverse order.
NOTE: Inspect spark electrode to make sure that the
ceramic is not cracked or damaged before
installing.
Spark Electrode
Figure 6.2.3
4. Replace pilot burner and re-assemble in reverse order.
Figure 6.2.5
6.2.5 Main Burner
1. Remove the top grate and radiant castings relevant to
the burner to be removed.
2. Remove the burner from its supports.
3. Replace and re-assemble in reverse order.
Main Burner