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Cobra CB6 Service Manual

Gas barbeque
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Gas Barbeque
M o d e l C B 6
S e r v i c e M a n u a l
© Moffat Ltd, August 2012
Cobra Series Gas Barbeque
Revision 2

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Summary of Contents for Cobra CB6

  • Page 1 Gas Barbeque M o d e l C B 6 S e r v i c e M a n u a l © Moffat Ltd, August 2012 Cobra Series Gas Barbeque Revision 2...
  • Page 2 IMPORTANT: MAKING ALTERATIONS MAY VOID WARRANTIES AND APPROVALS. This manual is designed to take a more in depth look at the Cobra Series CB6 Gas Barbeque 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.
  • Page 3 © Moffat Ltd, August 2012 Cobra Series Gas Barbeque Revision 2...

  • Page 4: Table Of Contents

    Page Number Specifications .................... 1 Installation ....................3 Operation ....................7 Description of Controls Explanation of Control System Maintenance ....................9 Cobra Gas Barbeque Maintenance Schedule Fault Finding .................... 10 Fault Finding Table Fault Diagnosis Service Procedures .................. 12 Access Replacement Adjustment / Calibration Accessories ....................

  • Page 5: Specifications

    ½" BSP Male Injector Sizes Natural Gas (G20) Propane (G31) Butane Town Gas Main Burners 2.70mm 1.65mm 1.55mm 4.50mm Pilot Burners 0.45mm 0.30mm 0.30mm 0.75mm Unit Weights (Net) 132 kg Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...
  • Page 6 Specifications External Dimensions CB6 Barbeque 600mm Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 7: Installation

    Cobra Series Barbeque are designed to provide years of satisfactory service, and correct installation is essential to achieve the best performance, efficiency and trouble-free operation.
  • Page 8 NOTE: ALL GAS FITTING MUST ONLY BE CARRIED OUT BY AN AUTHORISED PERSON. Cobra Barbeques do not require an electrical connection, as they function on the gas supply only. It is essential that the gas supply is correct for the barbeque to be installed and that adequate supply pressure and volume is available.
  • Page 9 Turn off the mains gas supply and bleed the gas out of the appliance gas lines. Turn ‘ON' the gas supply and the appliance. Verify the operating pressure remains correct. Manifold Test Point Figure 2. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...
  • Page 10 (Refer to the 'Gas Connection' section). NOTE: If for some reason it is not possible to get the appliance to operate correctly, contact the supplier of this appliance. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 11: Operation

    If the burner flame goes out for some reason, the Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...
  • Page 12 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. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 13: Maintenance

    Maintenance NOTE: A full user’s operation manual is supplied with the product and can be used for further referencing of Installation, Operation and Servicing. COBRA GAS BARBEQUE - MAINTENANCE SCHEDULE Business Name and Address: Date: Service Report No: Phone: Fax:...
  • Page 14 Burner aeration incorrectly set. Adjust the burner aeration. (yellow). Gas control valve stiff to operate. Gas control valve requires re- Re-grease the gas control valve. greasing. (Refer Section 6.3.1). Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 15: Fault Finding

    If pressure is correct, remove the pilot injector from pilot burner and check for blockages and / or correct size. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...
  • Page 16 Gas Control Valve ..................... 16 6.2.10 Gas Control Magnet ....................16 6.3 Adjustment / Calibration ................ 17 6.3.1 Gas Control Valve Re-Greasing ................... 17 6.3.2 Low Fire Rate Adjustment ..................17 Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 17: Service Procedures

    3) Undo the thermocouple from the gas control valve. The thermocouple can now be removed. 4) Replace and re-assemble in reverse order. Screws Thermocouple Connection Figure 6.1.1 Figure 6.2.1b Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 18: Pilot Injector

    NOTE: Inspect spark electrode to make sure that ceramic is not cracked or Figure 6.2.4b damaged before installing. 4) Replace the pilot burner and re-assemble in reverse order. Spark Electrode Figure 6.2.3 Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 19: Main Burners

    HT lead from the piezo ignitor. 2) Remove the HT lead from the piezo electrode, replace and re-assemble in reverse order. Piezo Ignitor, HT Lead and Piezo Electrode Main Injector Figure 6.2.6 Figure 6.2.8 Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 20: Gas Control Valve

    4) Replace gas control and re-assemble in reverse order. NOTE: Ensure that the correct size injector is re-fitted to gas control (refer to the ‘Specifications’ section). 5) Adjust low fire setting (refer 6.3.2). Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 21: 6.3 Adjustment / Calibration

    ROCOL - A.S.P (Anti scuffing paste) / Dry Moly Paste to the outside of the spindle. 5) Replace the spindle and re-assemble gas control in reverse order. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 22: Accessories

    Gas Type to Convert to: Model LP Gas Nat. Gas Butane Town Gas (Propane) 231562 231561 231563 231564 UK Models Only Gas Type to Convert to: Model LPG (Propane) Nat. Gas 231562 231561 Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 23: Exploded Parts Diagrams

    Exploded Parts Diagrams CB6 Gas Barbeque 8.1.1 CB6 - Main Assembly Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...
  • Page 24 Exploded Parts Diagrams CB6 Gas Barbeque 8.1.1 CB6 - Main Assembly Item Part No. Description *RPL 229883 SIDE PANEL LH 229882 SIDE PANEL RH 229879 FRAME WA 230585 SPLASHBACK 227445 BURNER SUPPORT 233729 BURNER SUPPORT 231479 BACK PANEL 229870 RADIENT CASTING COBRA...
  • Page 25 Exploded Parts Diagrams 8.1.2 CB6 - Gas Assembly Item Part No. Description *RPL 230441 BURNER 229852 MANIFOLD WA 228533 REGULATOR 1/2" CONVERTABLE 019624 ELECTRODE 019464K PILOT BURNER SIT 3-WAY 018972 PILOT INJECTOR 0.45NAT 018971 PILOT INJECTOR 0.30 LPG 026393 PILOT INJECTOR 0.75 TG...

  • Page 26: Service Contacts

    Fax (03) 381 3616 AUCKLAND - MOFFAT LTD 4 Waipuna Road Tel (09) 574 3150 Mt Wellington Fax (09) 574 3159 Auckland Spare Parts Free Call 0800 MOFFAT (0800 66 33 28) Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...
  • Page 27 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) Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 28: Appendix A: Gas Type Conversion

    Replace with the correct size injectors. Main Burner Refit the main burners, castings, inner radiants and grates to the Injector barbeque. Figure A.4. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...
  • Page 29 Refit the gas control knobs to the gas control valves. The gas control knobs are a push fit onto the shaft of Low Fire Adjustment Screw the gas control valves. Figure A.8. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...
  • Page 30  Ensure that the operating pressure remains correct. NOTE: If for some reason it is not possible to get the unit to operate correctly, shut off the gas supply and contact the supplier of this unit. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...
  • Page 31 Turn 'On' the gas supply and the appliance. Verify the operating pressure remains correct (Re-adjust the regulator if required). Screw the cap nut back onto the regulator. Figure Appendix A.10. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...
  • Page 32  TOWN GAS Only - The burner operating pressure is to be adjusted using the adjustable gas regulator supplied.  Refer to the ‘Gas Conversion and Specifications' section of this manual for further details. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

  • Page 33: Appendix B: Equipment Design Changes

    20306 From 0925XXX Burner Support Part No. 230319. Pilot Supply Tube was tubing, is now Flexi Tube 12” x 1/4” 04/06/09 20306 From 0925XXX OD SS, Part No. 230319. Cobra Series Gas Barbeque © Moffat Ltd, August 2012 Revision 2...

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