Gas Griddle Toaster Model CT6 Service Manual Cobra Series CT6 Gas Griddle Toaster Revision 1 © Moffat Ltd, September 2008
WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY. IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH. READ THE INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING THIS APPLIANCE. IMPORTANT: MAKING ALTERATIONS MAY VOID WARRANTIES AND APPROVALS.
Contents Contents List Section Page Number 1. Specifications............................................................................................. 1 2. Installation ................................................................................................ 3 3. Operation ................................................................................................... 7 4. Cleaning / Maintenance .......................................................................... 10 5.
Cobra Series CT6 Gas Griddle Toaster Revision 1 © Moffat Ltd, September 2008
Specifications 1 Model Numbers Covered in this Specification CT6 Gas Griddle Toaster External Dimensions Front Side Plan 1 Cobra Series CT6 Gas Griddle Toaster Revision 1 © Moffat Ltd, September 2008
1 Specifications Gas Supply (Non-UK Models) Input Rating (N.H.G.C.) Supply Pressure Burner Operating Pressure Natural Gas LP Gas / Butane Town Gas 42 MJ/hr (39,800 Btu/hr) 1.13 - 3.40 kPa (4.5” - 13.5” w.c.) 1.00 kPa (*) (4.0” w.c.) 42 MJ/hr (39,800 Btu/hr) 2.75 - 4.50 kPa (11” - 18” w.c.) 2.50 kPa (*) (10.0” w.c.) 42 MJ/hr (39,800 Btu/hr) 0.75 - 1.50 kPa (3” - 6” w.c.) 0.63 kPa (*) (2.5” w.c.
Installation 2 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.
2 5. Installation 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. 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.
Installation 2 NOTE: It is important that adequately sized piping runs directly to the connection joint on the griddle toaster 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. 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.
2 Installation 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. • Light the Pilot Burner. • Light the Main Burners. • Check the Low Fire burner operation. • Check the High Fire burner operation. b. Ensure that the operator has been instructed in the areas of correct lighting, operation, and shutdown procedure for the appliance. 2.
Operation 3 NOTE: A full user’s operation manual is supplied with the product and can be used for further referencing of installation, operation and service. 3.1 Description of Controls Piezo Igniter Gas Control Knobs OFF Position PILOT Burner HIGH Flame LOW Flame Piezo Igniters Ignites the Pilot Burners. Figure 3.1a Lighting the Pilot Burners Using the Griddle 1. 1. 2. 2. 3. 4. 5. 6. Depress the gas control knob and rotate anti-clockwise to the ‘PILOT’ position.
3 Operation 3.2 Using the Toaster 1. Light the pilot burners as shown above. 2. If starting from cold, set the burners to the ‘FULL’ flame position and allow 5 minutes preheat before commencing toasting. 3. Adjust the rack position to the desired height. 4. Place the product on the rack to toast. 5. Best toasting results are achieved using the shaded area of the toast rack as per the diagram below.
Operation 3 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.
4 Cleaning / Maintenance After Each Use General C AUTIO N : C AUTIO N : Always turn off the gas supply at the main gas supply before cleaning. This appliance is not water proof. Do not use water jet spray to clean interior or exterior of this appliance. Always ensure that an even pressure is applied over the whole surface of the scraper tool when using on the flat surface of the griddle toaster, to prevent scoring of the surface.
Cleaning / Maintenance Weekly Cleaning 4 Grilling / Toasting Area a. Clean the grilling / toasting area with a soft cloth, a mild detergent and a hot water solution. NOTE: • If the griddle toaster usage is very high, we recommend that the weekly cleaning procedure is carried out on a more frequent basis. 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 direction of the grain.
4 Cleaning / Maintenance COBRA GAS GRIDDLE TOASTER - MAINTENANCE SCHEDULE Business Name and Address: Date: Phone: Clients Order No: Service Report No: Fax: Serial No: Serviceman: 9 Model: 1 Inspect exterior condition of the unit. 2 3 4 5 Check Check Check Check 6a Inspect thermocouples. 6b 7 8 9 10 11 Replace thermocouples (every 12 months). Check injectors are clean and free from blockages. Re-grease gas cocks. Check for tightness of gas connections. Check for gas leaks.
Fault Finding 5 C AUTIO N : All installation and service repair work must be carried out by qualified persons only. 5.1 Fault Finding Table Fault Pilot will not light. Pilot flame small. Pilot goes out when knob released. Possible Cause Remedy No gas supply. Ensure gas is connected and turned 'On'. (bottles not empty). Knob on gas control will not push fully in. Remove obstruction. Gas pressure too low. Adjust gas supply pressure. (Refer 'Specification' Section). Blocked pilot injector.
5 Fault Finding Fault Pilot goes out during operation Main burners will not light Possible Cause Remedy Draught at installation (blowing pilot out). Shield griddle toaster from excessive breeze. Gas supply—incorrect or fluctuating pressure. Adjust gas supply pressure. (Refer Specifications Section). Thermocouple faulty. (Refer Fault Diagnosis 5.2.1) Replace thermocouple. (Refer Service Section 6.2.1). Electromagnet in gas valve faulty. (Refer Fault Diagnosis 5.2.1) Replace electromagnet.
Fault Finding 5.2 Fault Diagnosis 5.2.1 Pilot Drops Out 5 Thermocouple Faulty Check that the thermocouple connection to the gas control is firm. Tighten if necessary. Disconnect the thermocouple from the gas control valve. Light the pilot, and whilst holding the control knob in (to keep the pilot alight), measure the voltage generated between the end of the thermocouple and earth (eg the valve body). A good thermocouple should generate 20-30mV.
6 Service Procedures WARNING: • ENSURE THAT THE GAS SUPPLY IS SWITCHED 'OFF' BEFORE COMMENCING SERVICING. • ALWAYS CHECK / TEST FOR GAS LEAKS ON COMPLETION OF SERVICING REPAIRS ON THE GAS SYSTEM. C AUTIO N : All installation and service repair work must be carried out by qualified persons only. Section Page Number 6.1 Access ...................................................................................................... 17 6.1.1 Control Panel..................................................
Service Procedures 6.1 Access 6.2 Replacement 6.1.1 Control Panel 6.2.1 Thermocouple 6 1) Remove the control panel (refer 6.1.1) 1) Remove control knobs. 2) Disconnect the thermocouple and pilot supply tube from the gas control valve. 2) Remove two bolts from the underside of the control panel. The control panel can now be pulled out at the bottom and lifted off the top locating tags. 3) Remove two screws securing the pilot bracket and remove the pilot assembly.
6 Service Procedures 6.2.3 Pilot Burner 6.2.5 Main Burner Injectors 1) Remove the control panel (refer 6.1.1). 1) Remove the control panel (refer 6.1.1). 2) Disconnect the thermocouple and pilot supply tube from gas control valve. 2) Remove burner (refer 6.2.4). 3) Remove two screws securing pilot bracket, remove pilot assembly. 4) Re-assemble in reverse order. 3) Unscrew injector from support bracket. 4) Transfer supply tube, thermocouple and electrode to new pilot assembly.
Service Procedures 6.3 Adjustment / Calibration 6.3.1 Gas Control Valve Re-Greasing 6 1) Remove the gas control valve (refer 6.2.6). 2) Remove 2 screws holding shaft plate to gas control body and remove the control shaft and plate. Note the orientation of the shaft for correct re-assembly. Two Screws Figure 6.3.1a 3) Using needle nose pliers or similar, pull out the gas control spindle, again noting its orientation. Spindle Figure 6.3.
7 Accessories GAS CONVERSION KITS INDEX AU, NZ, XP Models Only MODEL TYPE CT6 GAS GRIDDLE TOASTER CONVERT TO CONVERSION KIT LPG 231554 NAT 231553 BUTANE 231555 TOWNS 231578 20 Cobra Series CT6 Gas Griddle Toaster Revision 1 © Moffat Ltd, September 2008
Exploded Parts Diagrams 8.1 Item 1 2 3 4 5 6 7 8 9 10 11 12 13 8 CT6 Main Assembly Part No.
8 Exploded Parts Diagrams 8.2 CT6 Burners / Legs Item Part No.
Exploded Parts Diagrams 8.3 CT6 Racks Item 38 39 40 Part No.
9 Service Contacts Australia VICTORIA - MOFFAT PTY HEAD OFFICE AND MAIN WAREHOUSE 740 Springvale Road Mulgrave VIC 3170 Spare Parts Department Tel (03) 9518 3888 Fax (03) 9518 3838 Free Call 1800 337 963 Fax (03) 9518 3895 NEW SOUTH WALES - MOFFAT PTY Unit 3/142 James Ruse Drive Rosehill NSW 2142 Spare Parts Tel (02) 8833 4111 Free Call 1800 337 963 Fax (03) 9518 3895 QUEENSLAND - MOFFAT PTY 30 Prosperity Place Geebung QLD 4034 Spare Parts Tel (07) 3630 8600 Free Call 1800 337 963 Fax (03) 9518 3895
Service Contacts 9 United Kingdom BLUESEAL LTD Units 67 Gravelly Industrial Park Gravelly Park, Erdington Birmingham B24 8TQ England Tel 0121 327 5575 Fax 0121 327 9711 United States of America MOFFAT INC.
A Appendix A: Gas Type Conversion Gas Conversion Procedure Pilot Burners 1. Disconnect pilot supply and thermocouple tubes from the gas control valve. 2. Undo the 2 screws securing the pilot assembly to the griddle toaster main frame. C AUTIO N : Ensure that the unit is isolated from NOTE: Pilot Gas Supply Tube • These conversions should only be carried out by qualified service persons. All connections must be checked for leaks before re-commissioning the appliance.
Appendix A: Gas Type Conversion A Gas Regulator - NAT Gas / LPG / Butane Only. NOTE: The regulator supplied is convertible between Natural Gas and LP Gas, but it’s outlet pressure is fixed ex-factory and is NOT to be adjusted. NOTE, Pin rotated for Natural Gas NOTE, Pin rotated for LPG Figure A.5 1. Ensure that the gas supply is turned 'Off' at the mains. 2. Unscrew the hexagonal cap (23mm A/F) from the regulator. 3.
A Appendix A: Gas Type Conversion Gas Type Identification Label On completion of the gas conversion, replace the gas type labels located at:- The rear of the unit, above the gas connection. - Beside the rating plate. 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 appliance. Commissioning WARNING: DO NOT USE A NAKED FLAME TO CHECK FOR GAS LEAKAGES. Before leaving the converted installation; 1.
Appendix A: Gas Type Conversion A Gas Specifications - Non UK Only: Natural Gas LP Gas (Propane) Butane Gas Town Gas Main Burner Injectors Ø 2.10mm Ø 1.30mm Ø 1.20mm Ø 3.80mm Pilot Burner Injectors 0.35 0.23 0.60 Low Fire Adjustment 1 turn out (c.c.w.) ½ turn out (c.c.w.) 2 turns out (c.c.w.) Operating Pressure Main Burner Aeration Shutter 1.0 kPa (*) 2.5 kPa (*) 0.
B Appendix B: Equipment Design Changes Equipment Design Changes Date Change Info. Equip. Ser. No.
