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INSTALLATION &
OPERATION MANUAL
GCO SERIES GAS CONVECTION OVENS
MODEL
GCO4S ML-52425
GCO4D ML-52354
GCO4C ML-52357
GCO6D ML-114729
GCO6C ML-114730
GCO4C
VULCAN-HART COMPANY, P.O. BOX 696, LOUISVILLE, KY 40201-0696, TEL. (502) 778-2791
FORM 30903 Rev. B (2-98)
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IMPORTANT FOR YOUR SAFETY THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL GAS EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD START-UP AND ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL. POST IN A PROMINENT LOCATION THE INSTRUCTIONS TO BE FOLLOWED IN THE EVENT THE SMELL OF GAS IS DETECTED. THIS INFORMATION CAN BE OBTAINED FROM THE LOCAL GAS SUPPLIER. IMPORTANT IN THE EVENT A GAS ODOR IS DETECTED, SHUT DOWN UNITS AT MAIN SHUTOFF VALVE AND CONTACT THE LOCAL GAS COMPANY OR GA
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TABLE OF CONTENTS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Loc
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Installation, Operation And Care Of GCO SERIES GAS CONVECTION OVENS KEEP THESE INSTRUCTIONS FOR FUTURE USE Your Vulcan Gas Convection Oven is produced with quality workmanship and material. Proper installation, usage and maintenance of your oven will result in many years of satisfactory performance. The manufacturer suggests that you thoroughly read this entire manual and carefully follow all of the instructions provided. GENERAL The Model GCO Series Convection Ovens feature a 500°F thermostat,
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INSTALLATION UNPACKING Immediately after unpacking the oven, check for possible shipping damage. If this oven is found to be damaged, save the packaging material and contact the carrier within 15 days of delivery. Prior to installation, verify that the electrical service and type of gas (natural or propane) agree with the specifications on the oven data plate, located on the inside of the bottom front cover. Do not use the doors or their handle to lift the oven. LOCATION The equipment area must
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NOTICE: When the oven is mounted on casters, it must be installed with the casters supplied, a connector (not supplied by Vulcan-Hart) complying with either ANSI Z21.69 (latest edition) or CAN/CGA-6.16 (latest edition), and a quick-disconnect device complying with either ANSI Z21.41 (latest edition) or CAN1-6.9 (latest edition). It must also be installed with restraining means to guard against transmission of strain to the connector, as specified in the appliance manufacturer’s instructions. Att
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ASSEMBLING STACKED OVENS Unpack the ovens and stack kit. Position one oven on its back for access to the oven bottom, taking care not to scratch or damage it. The gas pipe protrudes beyond the back; provide for this when the oven is tipped back by resting it on suitable spacers (2 x 4's, etc.). Attach the four leg assemblies with the 24 bolts and lockwashers (6 per leg). 7 Place lower oven (with legs) on floor and remove two ⁄16" (11.1mm) diameter knockouts on each side of top cover. Install
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ASSEMBLING THE OVEN TO THE STAND Unpack the oven and stand. Position oven on its back, taking care not to scratch or damage it. The gas pipe connection protrudes beyond the back; provide for this when the oven is tipped back by resting it on suitable spacers (2 x 4's, etc.). Install the two locating studs (included in the stand carton) into the screw plates on the underside of the oven (see Fig. 2). Attach each of the four leg assemblies to the bottom of the stand with the 24 bolts and lockwas
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The oven should be connected to the gas line after leveling. The gas supply line must be at least the equivalent 3 of ⁄4" (19mm) iron pipe. Make sure piping is clean and free of obstructions, dirt or pipe joint compound. WARNING: PRIOR TO LIGHTING, CHECK ALL JOINTS IN THE GAS SUPPLY LINE FOR LEAKS. USE SOAP AND WATER SOLUTION. DO NOT USE AN OPEN FLAME. TESTING THE GAS SUPPLY SYSTEM The oven and its individual shutoff valve must be disconnected from the gas supply piping system during any 1
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F P F MASTER SWITCH ON OFF ON HEAT OVEN 2 SPEED OVEN COOL MOTOR LAMPS HI ON ON OFF LOW OFF MASTER SWITCH ON OFF ON HEAT OVEN OVEN 2 SPEED LAMPS COOL MOTOR ON HI ON LOW OFF OFF OFF ON OFF GAS VALVE ON OFF GAS VALVE IGNITION IGNITION THERMOSTAT TIMER THERMOSTAT TIMER LIGHTING INSTRUCTIONS TURN GAS VALVE "ON" PUSH MASTER SWITCH TO "ON" POSTION. IF OVEN FAILS TO LIGHT. PUSH MASTER SWITCH TO "OFF" TURN GAS VALVE OFF WAIT 5 MINUTES FOR RETRIAL. OVEN COOL PUSH SWITCH TO "ON" TO SHUT OVEN OFF PLACE
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LIGHTING THE GCO4S AND GCO4D/GCO6D OVENS Turn manual Gas Valve ON. Turn Master Switch ON and turn Thermostat to its maximum setting. Both the ON and HEAT lights should come on. If HEAT light is not on, make sure door is closed. After 5 seconds, the spark ignition system will start and the solenoid valve will open, allowing gas to flow to the burner for 7 seconds. This 5-second purge and 7-second ignition trial will repeat up to two more times if the burner does not light within the first
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OVEN ON ON ON OFF GAS VALVE POWER TEMPERATURE OFF OFF FAN SPEED COOL LIGHTS HI LOW LIGHTING INSTRUCTIONS TURN GAS VALVE "ON" PUSH MASTER SWITCH TO "ON" POSTION. IF OVEN FAILS TO LIGHT. PUSH MASTER SWITCH TO "OFF" TURN GAS VALVE OFF WAIT 5 MINUTES FOR RETRIAL. TO SHUT-OVEN OFF PLACE POWER SWITCH IN "OFF" POSTION TURN GAS VALVE OFF STOP BAKE HEAT ROAST HOLD TIM TIM TIME E E START GENTLE TIME READY CONTROLS — MODEL GCO4C/GCO6C (Fig. 5) THERMOSTAT TIMER 2 SPEED FAN - HI / LO LIGHT SWITCH ON / OFF
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Temperature Knob (When Not Timing Product) 1. Sets the roast temperature when the Roast Button light is lit. The Roast Button light can be turned on by pressing the Roast Button. 2. Sets the hold temperature when the Hold Button light is lit. The Hold Button light can be turned on by pressing the Hold Button. Temperature Knob (When Timing Product) 1. Sets the roast temperature when the Roast Button light is lit. The Roast Button light cannot be changed by pressing the Roast Button. 2. Sets t
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Thermometer Button When pressed, causes actual cavity temperature to display for about 8 seconds, then display returns to set temperature. Heat Light When lit, indicates that power is being supplied to the burner. Ready Light Will be lit any time the actual temperature is within +/- 5°F (+/- 2.7°C) of the set temperature for the current mode. TIMER CONTROL Time Display (While Not Timing Product) Displays the set cook time if the light in the Roast Button is lit. Time Display (While Timing Produ
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Gentle Bake Button Selects the gentle bake time setting. A roast time must be set first. The gentle bake time can then be set equal to or less than the roast time. The gentle bake time will be the portion of roast time to operate in the gentle bake mode. Gentle bake mode will start first. When gentle bake time elapses, the remainder of the roast time will be in the non- gentle bake mode. Use when cooking delicate product, such as strudel, muffins, cupcakes, meringue pies, etc., to keep prod
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ON/OFF/OVEN COOL SWITCH 1. ON turns oven control circuits on. 2. OFF turns oven control circuits off. 3. OVEN COOL allows the fan motor to run with the doors ajar to speed oven cooling. 2-SPEED FAN SWITCH Adjusts air velocity in the oven. LIGHT SWITCH Turns lights in the oven on or off. GAS VALVE When ON, allows gas to flow to the ignition system. LIGHTING THE GCO4C/GCO6C OVEN 1. Turn manual Gas Valve ON. 2. Push On/Off/Oven Cool switch to the ON position and set Thermostat to its maximum settin
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USING THE GCO4C/GCO6C OVEN Preheating 1. Turn On/Off/Oven Cool switch to ON position. The Heat light will come on, indicating that power to the oven is on. 2. Set Thermostat as desired. Refer to COOKING GUIDELINES for suggested temperatures and times for various products. 3. Prepare product and place in suitable pans. When Ready light comes on, oven has reached desired preheat temperature. Cooking 1. Open doors and load the product into the oven. Place pans in the center of the racks. Close
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ROAST AND HOLD OPERATION Roast and Hold cooks the product in two stages. During First Stage Cooking, the oven temperature is regulated by the Roast thermostat for the amount of time set on the Timer. After the lapsed time counts down to 00:00, Second Stage Cooking begins. During Second Stage Cooking, the burners are off as the temperature in the oven declines to the Hold Temperature. The doors should remain closed during Second Stage Cooking. When the Hold temperature is reached, cooking is
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PROPER UTENSILS The use of proper utensils can enhance oven operation. Medium and light weight pans allow the product to warm faster. Roast meats in shallow pans deep enough to hold all juices yet allow free air circulation. CONSERVING ENERGY • Turn off unused equipment. • Adjust menu patterns and cooking/baking schedules for optimum equipment use. • Reduce thermostat settings in slack periods since gas equipment heats up and recovers quickly. • Preheat only to required cooking temperature for
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COOKING CHARTS Models GCO4S, GCO4D/GCO4C and GCO6D/GCO6C BAKED PRODUCTS Product Temp. Time (min.) No. Shelves Fan Speed (°F) (°C) Sheet Cakes (5 lb. each) (2.3 kg) 300 (149) 30 5 Low Soda Biscuits 325 (163) 12 5 Low Yeast Rolls 325 (163) 15-20 5 Low Corn Bread 300 (149) 15 5 Low Gingerbread 300 (149) 18 3 Low Chocolate Cake 325 (163) 20 5 Low Chocolate Chip Cookies 325 (163) 10 5 Low Sugar Cookies 326 (163) 12 5 Low Yellow Cake 300 (149) 25 5 Low Angel Food Cake 275 (135) 25 5 Low Brownies 350 (
