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Revision 1

Moffat Ltd, September 2008

Cobra Series CT6 Gas Griddle Toaster

Service Manual

Gas Griddle Toaster

Model CT6

Содержание CT6

Страница 1: ...Revision 1 Moffat Ltd September 2008 Cobra Series CT6 Gas Griddle Toaster Service Manual Gas Griddle Toaster Model CT6 ...

Страница 2: ...ompleteness 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 MAKING ALTERATIONS MAY VOID WARRANTIES AND APPROVALS IMPORTANT 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 ...

Страница 3: ...3 Operation 7 4 Cleaning Maintenance 10 5 Fault Finding 13 5 1 Fault Finding Table 5 2 Fault Diagnosis 6 Service Procedures 16 6 1 Access 6 2 Replacement 6 3 Adjustment Calibration 7 Accessories 20 Conversion Kit 8 Exploded Parts Diagrams 21 9 Service Contacts 24 Appendix A Gas Type Conversion 26 Appendix B Equipment Design Changes 30 Contents ...

Страница 4: ...Revision 1 Moffat Ltd September 2008 Cobra Series CT6 Gas Griddle Toaster ...

Страница 5: ... Moffat Ltd September 2008 1 1 Specifications Revision 1 Cobra Series CT6 Gas Griddle Toaster Model Numbers Covered in this Specification CT6 Gas Griddle Toaster External Dimensions Front Side Plan ...

Страница 6: ... kg Weight Natural Gas G20 Propane G31 Heat Input nett Nominal 11 0 kW 11 0 kW Reduced 6 0 kW 5 6 kW Gas Rate nett Nominal 1 16 m3 hr 0 85 kg hr Reduced 0 63 m3 hr 0 44 kg hr Supply Pressure 20 mbar 37 mbar Burner Operating Pressure 10 mbar 26 mbar 1 2 BSP Male Gas Connection Gas Supply UK Models Natural Gas LP Gas Butane Town Gas 42 MJ hr 42 MJ hr 42 MJ hr 39 800 Btu hr 39 800 Btu hr 39 800 Btu h...

Страница 7: ...ll void the warranty Components having adjustments protected e g paint sealed by the manufacturer are only allowed to be adjusted by a qualified service person 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 exterior stainless steel panels Check equipment and parts for ...

Страница 8: ...nection NOTE ALL GAS FITTING MUST ONLY BE CARRIED OUT BY A QUALIFIED SERVICE PERSON 1 Cobra Gas Griddle Toasters do not require an electrical connection as they function totally on the gas supply only 2 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 inst...

Страница 9: ...nual Isolation Valve must be fitted to the individual appliance supply line 1 Correctly locate the griddle toaster into its final operating position and using a spirit level adjust the legs so that the appliance is level and at the correct height 2 Connect the gas supply to the appliance A suitable jointing compound which resists the breakdown action of LPG must be used on every gas line connectio...

Страница 10: ...eration b 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 Appliance recorded and kept with the manual These details can be found on the Rating Plate attached to the R H side panel...

Страница 11: ...as control knob for approximately 10 seconds then release The pilot burner should remain alight If not repeat Items 1 to 3 4 Repeat Items 1 to 3 to light the second pilot burner 5 FULL flame can now be achieved by rotating the gas control knob anti clockwise to the first stop 6 LOW flame can be achieved by depressing and rotating the gas control knob fully anti clockwise Using the Griddle 1 Light ...

Страница 12: ...icity 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 dis...

Страница 13: ...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 Electromagnetic Flame Failure Gas Valve The purpose of the safety valve is to shut off the flow of gas if the pilot flame goes...

Страница 14: ...ncy follow the procedures shown CAUTION 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 After Each Use 1 Clean the griddle with a scraper tool to remove any food debris 2 Always ensure that the scraper tool blades are changed regularly to ensure that the scraper tool w...

Страница 15: ...negar when the plate is cold e Clean with hot water a mild detergent solution and a scrubbing brush Dry all components thoroughly with a dry cloth f The griddle plate should be switched on briefly to ensure that the griddle plate becomes dry A thin smear of cooking oil should be spread over the griddle plate to form a protective film Grilling Toasting Area a Clean the grilling toasting area with a...

Страница 16: ...k pilot flames correct size 4 Check that all burner ports light Clear any 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 cocks 9 Check for tightness of gas connections 10 Check for gas leaks 11 Check the piezo ignition of pil...

Страница 17: ...ed Releasing knob before the thermocouple has heated Pilot flame too small Refer Fault Pilot Flame Small Thermocouple faulty Refer Fault Diagnosis 5 2 1 Electromagnet in gas valve faulty Refer Fault Diagnosis 5 2 1 Hold control in for longer 30secs see if pilot will stay lit Correct fault Replace thermocouple Refer Service Section 6 2 1 Replace electromagnet Refer Service Section 6 2 6 Pilot flame...

Страница 18: ...le Refer Service Section 6 2 1 Replace clean injectors Refer Service Section 6 2 5 Replace gas control valve Refer Service Section 6 2 6 Pilot goes out during operation Draught at installation blowing pilot out Gas supply incorrect or fluctuating pressure Thermocouple faulty Refer Fault Diagnosis 5 2 1 Electromagnet in gas valve faulty Refer Fault Diagnosis 5 2 1 Shield griddle toaster from excess...

Страница 19: ...d 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 If the thermocouple is giving less than 10mV then it is faulty replace Thermocouple To Gas Control Connection Gas Magnet Faulty If the thermocouple is generating a sufficient voltage but the pilot lig...

Страница 20: ...ain Burners 18 6 2 5 Main Burner Injectors 18 6 2 6 Gas Control Valve Electro Magnet 18 6 3 Adjustment Calibration 19 6 3 1 Gas Control Valve Re Greasing 19 6 3 2 Low Fire Screw Adjustment 19 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 CAUTION All installation and service repair ...

Страница 21: ... gas control valve and pilot assembly 3 Unscrew the 2 screws securing the pilot assembly to the griddle toaster Remove the pilot assembly 4 The pilot injector can now be removed from the pilot assembly and replaced 1 Remove the control panel refer 6 1 1 2 Disconnect the thermocouple and pilot supply tube from the gas control valve 3 Remove two screws securing the pilot bracket and remove the pilot...

Страница 22: ...e the control panel refer 6 1 1 2 Disconnect the thermocouple and gas supply tubes from the gas control valve 3 Unscrew the gas control valve from gas supply manifold and remove the gas control valve 1 Remove the control panel refer 6 1 1 2 Remove burner refer 6 2 4 3 Unscrew injector from support bracket 4 Re assemble in reverse order Figure 6 2 5 6 2 5 Main Burner Injectors 6 2 6 Gas Control Val...

Страница 23: ...control in the low fire position adjust the low fire screw to give the desired flame 3 Re assemble in reverse order 6 3 1 Gas Control Valve Re Greasing 6 3 2 Low Fire Screw Adjustment 6 3 Adjustment Calibration Figure 6 3 1a Figure 6 3 1b Two Screws 3 Using needle nose pliers or similar pull out the gas control spindle again noting its orientation 4 Apply a suitable high temperature gas cock greas...

Страница 24: ...d September 2008 20 Revision 1 Cobra Series CT6 Gas Griddle Toaster MODEL TYPE CONVERT TO CONVERSION KIT CT6 GAS GRIDDLE TOASTER LPG 231554 NAT 231553 BUTANE 231555 TOWNS 231578 AU NZ XP Models Only GAS CONVERSION KITS INDEX ...

Страница 25: ... Item Part No Description 1 230269 SPLASHBACK 2 230587 COBRA BADGE 3 229999 GRIDDLE PLATE WA 4 230289 GREASE TRAY 5 230584 NOSE RAIL WA COBRA 6 230515 CONTROL PANEL 7 230586 PIEZO IGNITOR 8 228407 HT LEAD 250 mm 9 227046 SIDE PANEL LH 10 227047 SIDE PANEL RH 11 227040 BACK PANEL 13 227801 SPLASHBACK END 12 227794 BACK PANEL ...

Страница 26: ...m LPG 037120 INJECTOR 1 20 mm BUTANE 35 227403 GAS VALVE 21S CW 3 8 ELBOW 36 026488 PILOT INJECTOR NAT 0 35 mm 37 018744 ELECTRODE 019217 PILOT INJECTOR LPG 0 23 mm 27 011286 OLIVE 60X4 1 8IN BRASS 011286 26 017805 NUT PILOT 1 4IN 017805 25 227429 PILOT SUPPLY PIPE RH 24 227431 PILOT SUPPLY PIPE LH 23 019428 THERMOCOUPLE 320 mm M9x1 22 019215K PILOT BURNER KIT 21 229671 LEG RING PLATE THREADED 20 ...

Страница 27: ...Exploded Parts Diagrams Moffat Ltd September 2008 23 Revision 1 Cobra Series CT6 Gas Griddle Toaster 8 3 CT6 Racks Item Part No Description 38 227006 SIDE RACK 39 227007 TOASTING RACK 40 229987 CRUMB TRAY ...

Страница 28: ... 4034 Spare Parts Free Call 1800 337 963 Fax 03 9518 3895 WESTERN AUSTRALIA MOFFAT PTY 67 Howe St Tel 08 9202 6820 Osbourne Park WA 6017 Fax 08 9202 6836 Spare Parts Free Call 1800 337 963 Fax 03 9518 3895 NATIONAL COVERAGE FOR 24 HOUR SERVICE OR MAINTENANCE DIAL FREE CALL 1800 622 216 AUSTRALIA ONLY Canada SERVE CANADA 22 Ashwarren Rd Tel 416 631 0601 Downview Fax 416 631 0315 Ontario M3J1Z5 New ...

Страница 29: ... LTD Units 67 Gravelly Industrial Park Tel 0121 327 5575 Gravelly Park Erdington Fax 0121 327 9711 Birmingham B24 8TQ England United States of America MOFFAT INC 3765 Champion Blvd Winston Salem Tel 1800 551 8795 NC27115 Fax 336 661 9546 NATIONAL COVERAGE FOR SERVICE OR MAINTENANCE DIAL FREE CALL 1800 551 8795 USA ONLY ...

Страница 30: ...ront lower edges of the control panel 3 Refit the gas control knobs to the gas control valves The gas control knobs are a push fit onto the shaft of the gas control valves Gas Conversion Procedure NOTE These conversions should only be carried out by qualified service persons All connections must be checked for leaks before re commissioning the appliance For all relevant gas specifications refer to...

Страница 31: ...of the pin once re fitted to the cap 4 Screw the cap back into the regulator hand tight only Town Gas Only 1 Unscrew and remove the slotted cap from the regulator 2 Turn on the gas supply and the appliance 3 Adjust the pressure adjusting nut to achieve the correct burner operating pressure NOTE The operating pressure to be measured at the manifold test point and with both burners operating at the ...

Страница 32: ...converted installation 1 Check all gas connections for leakages using soapy water or other gas detecting equipment 2 Check the following functions in accordance with the operating instructions specified in the Operation section of this manual Light the Pilot Burners Light the Main Burners Check the Low Fire Burner Operation Check the High Fire Burner Operation Ensure that all the Controls operate ...

Страница 33: ...to the Gas Conversion and Specifications section of this manual for further details 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 turn out c c w 2 turns out c c w Operating Pressure 1 0 kPa 2 5 kPa 0 63 kPa Main Burner Aeration Shutter Fully Open Fully Open Gas Regu...

Страница 34: ...B Appendix B Equipment Design Changes Moffat Ltd September 2008 30 Revision 1 Cobra Series CT6 Gas Griddle Toaster Change Info Equip Ser No Description of Change Date Equipment Design Changes ...

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