Sub-Zero WOFL CG Service Manual
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Sub-Zero WOFL CG Service Manual

Sub-Zero WOFL CG Service Manual

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General Information
Controls & Operation
Component Access & Removal
Troubleshooting Guide
Technical Data
Wiring Diagrams
CG Gas Cooktop
Service Manual
subzero.com
800.222.7820
10
22
26
27
2
6

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Summary of Contents for Sub-Zero WOFL CG

  • Page 1 subzero.com 800.222.7820 CG Gas Cooktop Service Manual General Information Controls & Operation Component Access & Removal Troubleshooting Guide Technical Data Wiring Diagrams...

  • Page 2: Important Safety Information

    Wolf appliances by anyone other than Certified Service Technicians. The information and images are the copyright property of Wolf Appliance, Inc., an affiliate of Sub-Zero Group, Inc. Neither this manual nor any information or images contained herein may be copied or used in whole or in part with- out the express written permission of Wolf Appliance, Inc., an affiliate of Sub-Zero Group, Inc.

  • Page 3: General Information

    Cooktop Gas (CG) Series Cooktop Gas (CG) Series General Information WARRANTY INFORMATION This page contains a summary of the 2 & 5 Year Warranty that is supplied with every Wolf product, followed by Non- Residential Warranty Summary and then notes about the warranties. TWO &...

  • Page 4: Model Number Key

    Cooktop Gas (CG) Series Cooktop Gas (CG) Series General Information MODEL NUMBER KEY Refer to this key for an example of model numbers. Model: C G 36 5 P / S -LP Cooktop Type Size # of Burners Style Finish Fuel Product Cooktop...

  • Page 5: Model Configurations

    Cooktop Gas (CG) Series Cooktop Gas (CG) Series General Information MODEL CONFIGURATIONS 30” Gas CG304P CG304T Model Numbers Descriptions CG304P/S Cooktop Gas 30” Four burners Professional Stainless Steel Natural Gas CG304P/S - LP Cooktop Gas 30” Four burners Professional Stainless Steel Liquid Propane (LP). CG304T/S Cooktop Gas 30”...
  • Page 6 Cooktop Gas (CG) Series Cooktop Gas (CG) Series General Information MODEL FEATURES for 30” & 36” COOKTOPS GAS (CG) • Simmer on all burners • Dual stacked sealed burners • Single spark ignition with auto reignition for all burners • 20,000 BTU/hr burner on 36” Contemporary units. •...

  • Page 7: Theory Of Operation

    Cooktop Gas (CG) Series Cooktop Gas (CG) Series Theory of Operation OPERATION INFORMATION A service technician should understand how a gas appliance operates before attempting to service the appliance. This section provides descriptions of the different types of fuel gases and explains gas heating values. A definition of specific gravity of gas is given along with its characteristics and effects.
  • Page 8 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Theory of Operation PRINCIPLES OF GAS COMBUSTION: Combustion - When oxygen acts with a substance to produce large amounts of heat rapidly. Requirements for Combustion - There are three required elements for combustion to occur; Fuel (Gas), Oxygen (Air) and Heat (Ignition Temperature, which for gas is between 1100°F/593°C and 1200°F/649°C).
  • Page 9 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Theory of Operation Burner Components: Burner Cap - Provides upper portion of ports required to create a combustible mix and proper flame quality of burn- er and the decorative top for burner with a black porcelain coating. Burner Assembly - Contains burner ports where gas/air mixture ignites.
  • Page 10 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Theory of Operation OPERATION OF THE 30” and 36” WOLF COOKTOP GAS Surface Burners A spark electrode ignites each surface burner. This control eliminates need for continuous open flame pilots. For added safety and convenience, each burner is designed with an electronic re-ignition system. This feature enables any burner to automatically re-light in the event it is accidentally extinguished.
  • Page 11 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal COMPONENT REMOVAL - PROFESSIONAL AND TRANSITIONAL MODELS This section explains how to remove components from the Wolf Cooktop Gas Transitional and Professional models. The Wolf Cooktop Gas Contemporary is constructed differently and has a separate section after the Traditional and Professional models.

  • Page 12: Component Removal

    Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal Surface Burner Components Burner Cap Preliminary Steps Screws •Disconnect power cord from electrical supply source. Burner Assembly •Turn off gas supply source to cooktop. Burner Grate and Burner Assembly Ignitor Burner grates locate on raised dimples formed on burn- er pan.
  • Page 13 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal Orifice Removal The main and simmer Orifice are threaded into the ori- fice holder and may be extracted without removing ori- fice holder from its position. To remove an orifice, 1.
  • Page 14 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal Display Area Components Display Bracket, Display Light Board, Valve Switch, and Valve. To access these items requires removal of Display Phillip Bracket. Screws Preliminary Steps Knob • Unplug the power cord from electrical supply Bushing source.
  • Page 15 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal Display Bracket Removal - Professional models Prior to Serial #18141496 Professional units prior to serial #18141496 have a dis- Phillips play bracket beneath the burner pan. Screws Bezel Electrical • Professional units have a cut out in Display Bracket Connection for knob bezels to lock into place.
  • Page 16 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal Manifold Component Access Once display bracket and display board (Transitional units) is removed, access to valve, valve switch, mani- fold and gas tubing is possible (See Figure 3-10). Burner valves are marked to identify them (See Figure 3-11): •...
  • Page 17 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal Gas Valve Bypass Screw Orifice Each gas valve has two bypass screw orifices installed on the valve body. On sealed burners this bypass screw is not adjustable. If there is concern that the wrong bypass screw has been installed into a gas valve, size of bypass screw can be confirmed by comparing number stamped on bypass screw to orifice chart in Section 5.
  • Page 18 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal Spark Module Replacement Single point Spark Modules are located on a drop down plate called Igniter Bracket. Igniter Bracket drops down below unit allowing access and replacement of Spark Module without uninstalling cooktop. If igniter wire or harness requires replacement then Spark Module has to be accessed from top of the cooktop (See Figure 3- 14).
  • Page 19 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal Contemporary (CG365C) Component Removal Burner Cap The Contemporary model has components that are the same as the Professional and Transitional models, how- ever the unit is constructed differently. The unit might Burner Assembly be resting on the burner pan and removal of the burner assemblies from the burner pan can cause the burner...
  • Page 20 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal Igniter Bracket and Spark Module The bottom of the model CG365C has igniter brackets that drop down to allow access to the individual spark modules. To replace the spark module (See Figure 3-19): 1.
  • Page 21 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal AC-DC Rectifier Removal The AC-DC rectifier is attached to the unit wire harness and converts 120 VAC to 16 VDC for the light module. To remove the AC-DC rectifier, first remove the manifold bottom cover, then (See Figure 3-22): 1.
  • Page 22 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Component Removal Burner Pan Removal The burner pan is held to burner box by screws that mount the burner assemblies to the orifice assemblies. To remove the burner pan, first uninstall the unit from the installation, then (See Figure 3-25): 1.

  • Page 23: Troubleshooting Guide

    Cooktop Gas (CG) Series Cooktop Gas (CG) Series Troubleshooting Guide TROUBLESHOOTING GUIDE This section of the manual contains the Troubleshooting Guide which will help the Service Technician troubleshoot a Wolf Cooktop Gas. How to Use the Troubleshooting Guide The troubleshooting guide table of contents shows how the troubleshooting guide is laid out. The troubleshooting guide is organized into component areas with the most common problems listed first.

  • Page 24: Test / Action

    Cooktop Gas (CG) Series Cooktop Gas (CG) Series Troubleshooting Guide PROBLEM POSSIBLE CAUSE TEST / ACTION A. CONSTANT SPARKING AT Reverse Polarity at outlet or unit (All • May have to call an electrician. SURFACE BURNER(S) Burners) • Check internal connections. Ground wire disconnected or loose at outlet •...
  • Page 25 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Troubleshooting Guide PROBLEM POSSIBLE CAUSE TEST / ACTION D. NO SPARK AT BURNER No Power (All burners) • Check outlet and circuit breaker. ASSEMBLY(S) Igniter Wire disconnected or damaged • Replace igniter wire. Loose or damaged wire to spark module •...
  • Page 26 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Troubleshooting Guide Connecting to Unit Manifold: To check pressure on Cooktop Gas (CG) Series unit must be uninstalled, and burner pan removed. See Section 3 Component Removal. Once burner pan is removed, reassemble burners. Disconnect the Main gas tube from a 9.2k orifice holder and connect manometer to Main gas tube.

  • Page 27: Technical Data

    Cooktop Gas (CG) Series Cooktop Gas (CG) Series Technical Data GAS PRESSURE Maximum 14” WC Natural Gas and Liquid Propane Gas Supply Line Pressure 7” WC atural Gas Minimum 11” WC Liquid Propane Minimum Natural Gas Manifold Pressure, with Standard Orifice 5”...
  • Page 28 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Wiring Diagrams 30” Transitional Cooktop Gas (CG304T) #824779 - Revision B - October, 2016...
  • Page 29 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Wiring Diagrams 36” Transitional Cooktop Gas (CG365T) #824779 - Revision B - October, 2016...
  • Page 30 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Wiring Diagrams 30” Professional Cooktop Gas (CG304P) #824779 - Revision B - October, 2016...
  • Page 31 Cooktop Gas (CG) Series Cooktop Gas (CG) Series Wiring Diagrams 36” Professional Cooktop Gas (CG365P) #824779 - Revision B - October, 2016...

  • Page 32: Wiring Diagrams

    Cooktop Gas (CG) Series Cooktop Gas (CG) Series Wiring Diagrams WIRING DIAGRAM MODEL: CG365C - This wiring information is provided for use by qualified service personnel only. - Disconnect appliance from electrical supply before begining service. - Be sure all grounding devices are connected when service is complete. - Failure to observe the above warnings may result in severe electrical shock.

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