INSTALLATION & OPERATION MANUAL GPO72 GAS PIZZA OVEN MODEL GPO72 ML-114737 Model GPO72 VULCAN COMPANY, FORM 31018 (2-97) P.O. BOX 696, LOUISVILLE, KY 40201-0696, TEL.
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 GPO72 GAS PIZZA OVEN PLEASE KEEP THIS MANUAL FOR FUTURE USE GENERAL Vulcan pizza ovens are produced with quality workmanship and material. Proper installation, usage and maintenance of your pizza 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.
The installation location must allow adequate clearances for servicing and proper operation. A minimum front clearance of 48" is required. Do not obstruct the flow of combustion and ventilation air. Adequate clearance for air openings into the combustion chamber must be provided. Make sure there is an adequate supply of air in the room to replace air taken out by the ventilating system. Do not permit fans to blow directly at the pizza oven. Wherever possible, avoid open windows next to the pizza oven.
Left Deck Center Deck Right Deck PL-52617 Fig. 1 Flue Deflector Install the flue deflector. The hardware is provided with the pressure regulator inside the oven. To install, slide the front lip of the flue deflector under the two clips attached to the top of the oven. Then bring back to the rear. Holes in the flue deflector should line up with the holes provided in the oven. Install with the screws provided.
Assembling Stacked Ovens 1. Install the 17" legs on the lower oven and position the lower oven as near to its final location as possible. (For conversion: Legs must be changed to short legs provided in the conversion package. Discard the longer legs.) 2. Mount the upper oven on top of the lower oven. Be sure the flue risers are properly aligned. 3. Tie both ovens together at the rear with the stacking straps and the hardware provided (Fig. 3). 4. Install the connection pipe with unions (Fig. 3).
Optional Electrical Connection Pressure Regulator Gas Valve P L -52 6 2 0 Fig. 4 Install the gas pressure regulator. Natural gas pressure regulators are preset for 3.7" W.C. (Water Column); propane gas pressure regulators are preset for 10" W.C. When connecting fittings to the rear inlet pipe projecting through the body back of the oven, hold back on this pipe with a wrench to eliminate any excess strain on the internal oven piping.
TESTING THE GAS SUPPLY SYSTEM When gas supply pressure exceeds 1/2 psig (3.45 kPa), the oven and its individual shutoff valve must be disconnected from the gas supply piping system. When gas supply pressure is 1/2 psig (3.45 kPa) or less, the oven should be isolated from the gas supply system by closing its individual manual shutoff valve. FLUE CONNECTIONS DO NOT obstruct the flow of flue gases from the flue located on the rear of the oven.
ADJUSTMENTS All pilot lighting adjustments must be performed by a qualified installation or service person. Pilot Burner 1. Remove the thermostat dial, the adjustable baffle knob, and the lower front panel cover. 2. Rotate the adjustment screw (Fig. 5) clockwise to decrease the pilot, or counterclockwise to increase the pilot flame. LIGHT PILOT BURNER PILOT BURNER BODY TUBING CONNECTOR BULB PILOT LIMITING ORIFICE RESET BUTTON PILOT ADJUSTMENT SCREW PL-52621 Fig.
Air Supply 1. Remove the lower front panel cover. 2. Turn thermostat dial to a mid-range temperature. 3. Adjust the air shutters (Fig. 6) until the flame is sharp but not lifting off the burner. Air Shutters PL-52622 Fig.
OPERATION WARNING: THE OVEN AND ITS PARTS ARE HOT. USE CARE WHEN OPERATING AND CLEANING THE OVEN. CONTROLS (Fig. 7) Thermostat — Regulates gas flow to the burners to maintain set temperature. Temperature range for the standard oven is 300-650°F; temperature range for the optional 115 Volt control is 300-700°F. Baffles — Adjustable baffles allow a positive balance of top and bottom heat. To increase top heat and reduce bottom heat, pull the baffle knobs out.
LIGHTING INSTRUCTIONS 1. 2. 3. 4. Remove lower front panel of the oven by pulling straight out. If the pilot is out, turn the thermostat dial to the OFF position. Wait 5 minutes before relighting. The gas valve knob must be in the ON position. Depress the red button (see Fig. 7) and ignite the pilot. Hold red button in approximately 30-45 seconds or until pilot remains on. 5.
Stubborn spots or stains that resist soap and water usually can be removed with a paste of water and a mild scouring powder. When applying these powders, be sure to rub in the direction of the polish lines on the stainless steel to preserve the original finish. Fingerprints are sometimes a problem on highly polished surfaces of stainless steel. They can be minimized by applying a cleaner that will leave a thin, oily or waxy film.
MAINTENANCE WARNING: THE OVEN AND ITS PARTS ARE HOT. CLEANING THE OVEN. USE CARE WHEN OPERATING AND WARNING: DISCONNECT ELECTRICAL POWER SUPPLY BEFORE SERVICING THE OVEN. LUBRICATION Every 6 weeks, lubricate the door bearing. Use Bostik Never-Seez, Catalog # NHTC-14, which is a lubricant that may be used under high temperature conditions. The grease fitting is located on the back of the door bearing (Fig. 8). Grease Fitting PL-52626 Fig.
TROUBLESHOOTING PROBLEM Too Much Bottom Heat POSSIBLE CAUSES 1. 2. 3. 4. 5. Adjustable baffle closed. Overactive flue. Temperature too low. Improper operation. Thermostat calibration (contact your local Vulcan Service Office). Too Much Top Heat 1. 2. 3. 4. Adjustable baffle open. Temperature too high. Faulty ventilation. Thermostat calibration (contact your local Vulcan Service Office). Uneven Baking Side-to-Side 1. Thermostat calibration (contact your local Vulcan Service Office). 2.
