MODEL HGC SERIES GAS CONVEYOR OVENS MODELS HGC3018 HGC4018 HGC3624 HGC3632 HGC4824 HGC4832 HGC6024 HGC6032 ML-126180 ML-126181 ML-126182 ML-126183 ML-126184 ML-126185 ML-126186 ML-126187 701 S.
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.
TABLE OF CONTENTS GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Location . . . . . . . . . . . . . . . . . . . . . . . . .
Installation, Operation and Care of MODEL HGC SERIES GAS CONVEYOR OVENS PLEASE KEEP THIS MANUAL FOR FUTURE USE GENERAL Hobart ovens are produced with quality workmanship and material. Proper installation, usage and maintenance of your oven will result in many years of satisfactory performance. It is suggested that you thoroughly read this entire manual and carefully follow all of the instructions provided.
LOCATION When the crate is turned on its side, the oven will pass through a 34" (86 cm) door opening (or 30" [76 cm] opening without the crate). Verify that the doors and access routes into the kitchen area will permit clearance. The equipment area must be kept free and clear of combustible substances. When installed, minimum clearance from combustible and non-combustible construction must be 2.5" (63.5 mm) at the sides and 2.5" (63.5 mm) at the rear.
INSTALLATION CODES AND STANDARDS The oven must be installed in accordance with: In the United States of America: 1. State and local codes. 2. National Fuel Gas Code, ANSI-Z223.1 (latest edition). Copies may be obtained from The American Gas Association, Inc., 1515 Wilson Blvd., Arlington, VA 22209. 3. National Electrical Code, ANSI/NFPA-70 (latest edition). Copies may be obtained from The National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. In Canada: 1. Local codes. 2. CAN/CGA-B149.
ASSEMBLY Ovens Mounted on Legs or Feet To service the oven when mounted on legs or feet, a minimum clearance of 18" (457 mm) from service compartment is required. Ovens Mounted on Casters NOTICE: In order to be able to service this appliance, it must be installed with the casters supplied, a connector complying with ANSI Z21.69 or CAN/CGA-6.16, and a quick-disconnect device complying with ANSI Z21.41 or CAN1-6.9.
Installing Stacked Ovens After basic oven is installed: • Lift the top oven and place it on top of the bottom oven. • No fasteners are required; the weight of the oven will keep it in place. LEVELING Casters for this oven are of the non-adjustable type. For best results, oven should be installed on a level floor. GAS CONNECTIONS Gas supply connections and any pipe joint compound must be resistant to the action of propane gases.
ELECTRICAL CONNECTIONS WARNING: ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE APPLICABLE PORTIONS OF THE NATIONAL ELECTRICAL CODE AND/OR OTHER LOCAL ELECTRICAL CODES. WARNING: APPLIANCES EQUIPPED WITH A FLEXIBLE ELECTRIC SUPPLY CORD ARE PROVIDED WITH A THREE-PRONG GROUNDING PLUG. IT IS IMPERATIVE THAT THIS PLUG BE CONNECTED INTO A PROPERLY GROUNDED THREE-PRONG RECEPTACLE. IF THE RECEPTACLE IS NOT THE PROPER GROUNDING TYPE, CONTACT AN ELECTRICIAN. DO NOT REMOVE THE GROUNDING PRONG FROM THIS PLUG.
OPERATION WARNING: THE OVEN AND ITS PARTS ARE HOT. BE VERY CAREFUL WHEN OPERATING, CLEANING OR SERVICING THE OVEN. CONTROLS (Fig's. 2 and 3) TEMPERATURE DISPLAY READ SET POINT BUTTON LOAD INDICATOR LIGHT TIME DISPLAY TIME RANGE SWITCH BELT SWITCH TIME KNOB POWER SWITCH PL-41154-1 Fig. 2 SET POINT CYCLE TIME MAN. RESET PROP. BAND DOOR FLAP PL-41155-1 Fig.
Temperature Display — Displays actual oven cavity temperature during cooking cycle. Read Set Point Button — Push to display set temperature. Load Indicator Light — When lit, indicates that the heat is being provided to the oven. Time Display — Displays actual cooking time in minutes and tenths of minutes. Time Range Switch — Use to set cook time range from 2 to 8 minutes, 8 to 15 minutes, or 15 to 20 minutes. Switch must be on cook time range desired in order to change belt speed.
ALTERNATE CONTROLS (Fig. 4) TEMPERATURE DISPLAY SET POINT INDICATOR LIGHT SET POINT SET POINT ARROWS TIME DISPLAY TIME RANGE SWITCH BELT SWITCH POWER SWITCH TIME KNOB DRIVE MOTOR FUSES CONTROL CIRCUIT FUSE PL-41156-1 Fig.
Temperature Display — Displays actual oven cavity temperature during cooking cycle. Set Point — Press to display set temperature. Set Point Arrows — 1. Press the Set Point button so that the set point is displayed, and at the same time, press the Set Point Arrows up or down until the desired set point temperature appears in the digital display. 2. Release the Set Point button. The actual oven cavity temperature will display.
BEFORE FIRST USE 1. Clean the protective metal oils from all surfaces of the oven. 2. Use a non-corrosive, grease dissolving commercial cleaner. Follow manufacturer's directions. 3. Rinse thoroughly with a clean damp cloth and wipe dry with a soft clean cloth. • DO NOT hose down the oven. • Do not use this oven if its controls have been wet. If the controls are wet, contact your Hobart servicer.
Extended Shutdown 1. Turn Power Switch to OFF. 2. Turn gas combination valve to OFF. 3. Turn main gas shutoff valve to OFF. USING THE OVEN 1. Turn the main power switch ON. • The oven will begin operating at the factory set temperature of 525°F (273°C). • The actual oven cavity temperature will appear in the temperature display. • The Load Indicator Light will indicate if the heat is on. 2. Press and hold the Read Set Point or Set Point button to read the temperature set point.
Loading and Unloading the Oven 1. Place product in utensils (if required). 2. Set utensils or products on the entrance end of the belt; not in the oven tunnel. 3. Remove utensils or products from the oven after they completely clear the oven tunnel. Air Distribution Panels The oven is equipped with a top and a bottom air distribution panel. • These panels regulate the quantity of air on the top and bottom of the product that is being cooked.
CLEANING WARNING: DISCONNECT ELECTRICAL POWER SUPPLY BEFORE CLEANING. Daily Clean the outside of the oven daily by wiping with a clean damp cloth. • Avoid using abrasive powders or pads; these cleaners may damage the finish. Clean right-hand and left-hand crumb trays (Fig. 7). 1. Remove and wash in a sink as you would any normal utensil. 2. Replace crumb trays. Clean center crumb tray (Fig. 7). 1. Remove the front panel. a. Grasp each side of the door handle and lift up. b.
Conveyor To maintain proper belt tension, adjust the conveyor belt to remove any slack. 1. Locate the two adjustment screws (Fig. 8) on the right hand end (facing machine) of the conveyor assembly. 2. Loosen the nuts on the inside of the conveyor rack and turn the adjusting screws clockwise to increase belt tension. Be sure to adjust both screws an equal amount. 3. Retighten the nuts on the inside of the conveyor rack.
2. Conveyor Assembly Removal a. Remove conveyor crumb trays (see Fig. 7). b. Remove cover where conveyor shaft enters the left-hand control box (Fig. 9). REMOVE COVER PL-41129-1 Fig. 9 c. Lift up the drive end of the conveyor assembly and slide the conveyor assembly into the oven tunnel to remove the tension on the drive chain. d. Slip the drive chain off the conveyor drive sprocket (Fig. 10). PL-41130 Fig.
e. Pull the entire conveyor assembly from the oven (Fig. 11). PL-41131 Fig. 11 f. Take conveyor assembly to cleaning area. g. Reverse this procedure to replace conveyor assembly. Weekly CAUTION: Intake fans and slots on the back of the oven and control box must be cleaned weekly. Any obstructions may cause motor damage. Use a long bristle brush to clean these areas.
CONVEYOR BELT ASSEMBLING AND DISASSEMBLING (Fig. 12) Install the conveyor belt so that it always runs in the direction indicated by this arrow — the closed end of the loop toward the direction of travel. 1 The arrows in the belt illustrate the movement of the splicing strand between steps. When bending the splicing strand, try to limit bending to straight portions of the strand rather than in the "Z" bend area. 2 3 4 Splice one side completely before starting the other side.
COOKING CHART The times and temperatures shown in this chart are suggested only. Experiment with your food products to determine the cooking temperatures and times that give you the best results. TYPE OF FOOD PRODUCT APPROX. TIME (IN MIN.) ITALIAN Pizza (par baked dough) Pizza (fresh dough) Pizza (thick pan type) Calzone (fresh dough) Pastas (precooked to gratin) 4 to 4.5 5.5 to 6.5 7.5 to 8.5 5 to 6 5 to 6 510 510 510 510 510 BREADS & SUBS Garlic Bread Bread Sticks Submarine Sandwiches 2.5 to 3.
MAINTENANCE WARNING: THE OVEN AND ITS PARTS ARE HOT. BE VERY CAREFUL WHEN OPERATING, CLEANING OR SERVICING THE OVEN. WARNING: DISCONNECT ELECTRICAL POWER SUPPLY BEFORE PERFORMING ANY MAINTENANCE ON THE OVEN. INSPECTION The oven should be inspected at least annually by a Hobart authorized servicer. More frequent cleaning may be required due to oven grease vapors, dust, etc. It is imperative that control compartments, burners, and circulating air passageways of the oven be kept clean.
TROUBLESHOOTING GUIDE POSSIBLE CAUSES PROBLEM ACTION Power switch is on and oven will not operate. • Gas combination valve is in the OFF position. Turn the valve to ON. Burner is on but oven does not start. • Temperature controller setting not properly adjusted. Adjust temperature controller. • Problem with thermocouple. Contact your Hobart servicer. Speed control shows "OL". • Conveyor belt is stuck. Check the belt. Conveyor belt does not turn. • Problem with speed control.