Garland GAS PIZZA OVENS User's Manual
Contents
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8. 12 Core Plates llle eese 12 Troubleshooting Guide 13 Page 3 DIMENSIONS AND SPECIFICATIONS SERIES Ratings shown are for natural gas REAR amp SIDE __ installations up to 2000 feet 610m GASINLET above sea level input ratings must S A ee be de rated for high altitude installations Specify altitude of product if over 2000 76261732 23 3 8 feet 610m 51 7 8 594mm This product is not approved for residential use 23 3 8 594mm 36 1 2 927mm Installation Notes oe 14 1 2 Non Combustible amp 368mm Combustible Wall Clearances 1 25mm 6 152mm Entry Clearance 67 5 32 1705 24 21 32 35 26 889mm 660mm Manifold LI 31 Operating Pressure 787mm Natural Propane 6 WC 10 WC 15mbar 25mbar 7 21 32 195mm INPUT SPECIFICATIONS coe mm Natural Or Propane GASINLET GAS INLET 3 4 N P T 201mm 45 1 4 12 1 2 1149mm 318mm 203mm MODEL Interior Dimensions In mm Exterior Dimensions In mm NUMBER __ GPD48 48 1220 8 203 36 914 63 1600 52 3 4 1340 45 1 4 1149 203 200 208 151 129 15 14 140 Page 4 Part 1844063 08 06 INSTALLATION Damage Check check carton or crate for possible damage incurred in shipping After
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20. and mild household detergent Core Plates CAUTION The use of water to cool down or clean core plates will void warranty To clean core plates set thermostat dial to 550 degrees F 288 degrees C at the end of the cooking day and allow thermostat to cycle for one hour When the oven has cooled cooking residue will be carbonized and can be removed by sweeping with a stiff brush Stubborn residue can be loosened with a scraper Part 1844063 08 06 TROUBLESHOOTING GUIDE Problem Causes Solutions Hot Spots in Deck Bottoms cook before top Low production oven idling Turn temperature up after loading pizza Make sure to turn the temperature down after bake is compete Bottoms become light during Color overall dark By pass flame high Thermostat Check actual temperature call for service Oven idles during slow periods Increase temperature to bake reduce again when bake is finished Burner flame yellow soft lazy Not enough air mixing Open adjust air shutter ee Burner flame shuts off when oven By pass set too low Adjust by pass reaches set temperature Part 1844063 08 06 Page 13 NOTES Page 14 Part 1844063 08 06 60 40 9 8 off 22914 pI aseg seq ajulayye 159 ej 10 uoneAuop euuure e uoneAuop ep 5 np
21. be allowed to compensate for the amount of air removed by any ventilating system Otherwise a subnormal atmospheric pressure will occur affecting the appliance operation adversely and causing undesirable working conditions 2 Appliances shall be located so as not to interfere with proper circulation of air within the confined space All gas burners and pilots require sufficient air to operate 3 Large objects should not be placed in front of the appliance which might obstruct the airflow through the front Do not obstruct the flow of combustion and ventilation air 4 Do not permit fans to blow directly at the appliance and wherever possible avoid open windows adjacent to the appliance sides and back also wall type fans which create air cross currents within the room DRAFT DIVERTER FLUE CAP Part 1844063 08 06 INSTALLATION continued Less than 10 feet 3 meters Termination Less than 10 feet 3 meters from ridge Installing Under Ventilation Canopy Too strong a pull through the exhaust system will pull heat out of the oven too rapidly and cause uneven baking strong bottoms and light tops All ovens operating under a ventilating canopy should be equipped with a canopy flue diverter assembly supplied to offset too strong a pull Installing with Direct Ventilation Wherever a direct flue is unavoidable it is necessary that 1 The draft diverter shipped with the oven is installe
22. carefully uncrating check for concealed damage Report any damage immediately to your carrier The correct type of gas for which the unit was manufactured is noted on the rating plate and this type of gas must be used 9 The gas pressure must be checked when the unit is installed to ensure that the unit gas pressure is the same as specified on the rating plate If necessary pressure adjustments can be made at the pressure regulator supplied on each unit A Have a qualified gas technician check the gas pressure to make certain that existing gas facilities meter piping etc will deliver the BTU s of gas required at the unit with no more than 2 water column pressure drop When checking pressure be certain that all the equipment on same gas line is turned to the ON position Make certain that the new piping joints and connections have been made in a clean manner and have been purged so that the piping compound chips etc will not clog pilots valves and or controls Use pipe joint sealant that is certified for use with LP gas WARNING using soap solution or similar means DO NOT CHECK WITH AN OPEN FLAME 9 check gas connections for leaks Rating Plate burner input ratings are shown on the serial plate located on the right side panel of the appliance When corresponding with the factory or your local authorized factory service center regarding service problems or re
23. them periodically and replace as needed Make sure that the V shaped diverters are pushed all the way to the back of the oven as far as they will go OPERATION Break In 1 Once the equipment has been installed and tested by qualified professional personnel the oven is ready for operation N Many of the parts used in the oven have thin protective oil covering This oil should be burned off before the oven is used for the production of food products It is normal for the unit to smoke while burning off excess oil Washing the deck of the oven with a damp clean cloth and mild soap solution will remove some of the protective oil coating Part 1844063 08 06 3 Select a temperature of 300 degrees F 150 degrees C and turn the gas cock dial to the ON position 4 Allow the oven to warm to 300 degrees F 150 degrees C and keep it there for FIVE HOURS or at least until all smoke and fumes have disappeared The smoke and fumes are from moisture in the deck and insulation and a light coat of oil 5 Turn the thermostat knob to between 475 degrees F 250 degrees C Allow the oven to warm up to your selected temperature for 1 to 1 hours Page 11 OPERATION Continued 9 When theoven has reached the selected temperature experiment until you get the feel of the oven and the speed of the bake In case of some initial unevenness in the baking have patience for a few days until the oven cures Ligh
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25. 2L GARLAND INSTALLATION OPERATING amp SERVICE INSTRUCTIONS FOR THE GARLAND GPD SERIES GAS PIZZA OVENS WARNING IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTENANCE CAN CAUSE PROPERTY DAMAGE INJURY OR DEATH FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS OR LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE READ THE INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING THIS EQUIPMENT PLEASE READ ALL SECTIONS OF THIS MANUAL AND RETAIN FOR FUTURE REFERENCE THIS PRODUCT HAS BEEN CERTIFIED AS COMMERCIAL COOKING EQUIPMENT AND MUST BE INSTALLED BY PROFESSIONAL PERSONNEL AS SPECIFIED IN THE COMMONWEALTH OF MASSACHUSETTS THIS PRODUCT MUST BE INSTALLED BY A LICENSED PLUMBER OR GAS FITTER APPROVAL NUMBER G 1 07 05 28 For Your Safety Post in a prominent location instructions to be followed in the event the user smells gas This information shall be obtained by consulting your local gas supplier SSI SSI Vw wo Fig NAS o 0 Users are cautioned that maintenance and repairs must be performed by a Garland authorized service agent using genuine Garland replacement parts Garland will have no obligation with respect to any product that has been improperly installed adjusted operated or not maintained in accordance with national and local codes or installation instructions provided with the product or any product th
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27. Combustible Construction 1 25mm sides and 6 152mm rear Suitable for installation on combustible floors Legs must be installed Preparation Carefully remove unit from carton or crate Burner me tie wires and other packing material should be removed from units On stainless steel units the protective material covering the stainless steel should be removed immediately after the unit is installed 2 This unit must be mounted on the factory supplied legs when installed Refer to section titled LEG INSTALLATION for details 3 Provide adequate clearances for proper operation and servicing of the appliance 4 For your safety keep the appliance area free and clear from combustibles 5 These units must be installed under an adequate ventilation system Refer to sections titled Ventilation and Supply for further instructions Page 6 Ventilation This appliance must be installed in a location in which the facilities for ventilation permit satisfactory combustion of gas and proper venting Proper ventilation is imperative for good operation of the appliance The ideal method of ventilating equipment is the use of a properly designed ventilating canopy which should extend at least 6 152mm beyond all sides of the appliance except against the wall if the canopy is a wall installation This is usually part of a mechanical exhaust system Air Supply 1 It is necessary that sufficient room air ingress
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31. ading of the gas supply or a faulty gas pressure regulator You should contact a qualified service agency or the local gas company to check the gas supply ee Dirty burner orifice or ports With the oven cold use a thin wire to check that the spud orifice nozzle is clear If necessary loosen and remove the spud Be careful when cleaning not to enlarge the hole Then using a wire or thin nail clear the burner ports of carbon deposits or other restrictions Periodically after breaking the ovens in check the burner flame and readjust the air mixture if needed Black soot on the oven doors or in the burner compartment may indicate that not enough air is mixing with the gas If this case back off the air adjustment disk until the proper flame and color is set Page 10 By Pass Flame Adjustment Ihe by pass in the thermostat is a small gas supply through the control that is independent of the dial setting It is controlled strictly by the Adjusting Screw This small gas supply maintains a minimum flame or the burner s helping to maintain the heat in the oven and assisting in recovery This adjustment is best done when the oven is being heated for the day s business To adjust the by pass flame follow steps 1 thru 4 1 Turn the oven on and set the thermostat to the desired temperature 2 Allow the oven to pre heat until the burner flame begins to throttle down 3 At this point turn the thermostat dial all the way do
32. arbon monoxide is known to the State of California to cause birth defects or other reproductive harm Keep appliance area free and clear from combustibles Page 2 Part 1844063 08 06 TABLE OF CONTENTS Important Information 2 Dimensions And Specifications GPD 4 Installation 5 Ragne e 5 Gas Connections 5 Installation 6 Preparation pa or adea em eed 6 6 ae eee Lee 6 Installing Under Ventilation 7 Installing With Direct Ventilation 7 Assembly Instructions 7 Leg 7 Hearth 1 Double Deck Assembly 8 Cras Connections sarni ede et OR te eh Se 8 9 Gas Pressure Adjustments 9 Flame amp Air Mixture Adjustment 9 By pass Flame 10 ex dx SPACE IRAE ex 10 Flame Diverters 11 Part 1844063 08 06 Operation M 11 Break me ctp ate sate ate e iens 11 Lighting shutdown Instructions 12 Cleaning 12 Oven Exterior 12 Oven
33. at has its serial number defaced obliterated or removed or which has been modified or repaired using unauthorized parts or by unauthorized service agents For a list of authorized service agents please refer to the Garland web site at http www garland group com The information contained herein including design and parts specifications may be superseded and is subject to change without notice Continuous product improvement is a Garland policy therefore design and specifications are subject to change without notice GARLAND COMMERCIAL INDUSTRIES GARLAND COMMERCIAL RANGES Enodis UK LTD 185 East South Street LTD Swallowfield Way Hayes Middlesex UB3 1DQ ENGLAND Freeland Pennsylvania 18224 1177 Kamato Road Mississauga Ontario L4W 1X4 Telephone 081 561 0433 Phone 570 636 1000 CANADA Fax 081 848 0041 Fax 570 636 3903 Phone 905 624 0260 Fax 905 624 5669 Part 1844063 08 06 2005 Garland Commercial Industries Inc IMPORTANT INFORMATION WARNING This product contains chemicals known to the State of California to cause cancer and or birth defects or other reproductive harm Installation and servicing of this product could expose you to airborne particles of glass wool ceramic fibers Inhalation of airborne particles of glass wool ceramic fibers is known to the State of California to causes cancer Operation of this product could expose you to carbon monoxide if not adjusted properly Inhalation of c
34. d More than 10 3 meters 3 90cm Min Termination More than 10 feet 3 meters from ridge 2 An adequately sized draft regulator barometric damper must be installed in the flue line as close to the oven connection as possible An adequately sized prefabricated metal vent should rise at least 10 feet 3m above the roof of the building in which it is installed or 10 feet 3m above any proximate higher structure and should be equipped with a well designed vent cap Never under any circumstances install a damper or y place steel wool in an oven flue ASSEMBLY INSTRUCTIONS Leg Installation On single deck units tip oven section units back On double deck units tip lower oven section ONLY on its back Each leg is secured with four 3 8 16mm hex head bolts threaded into nuts located on the underside of the base angle When both front legs are installed lift and block up rear of unit Install rear legs Part 1844063 08 06 Hearth Installation NOTE Because of the weight of the hearth plates be very careful to avoid injury to yourself and to shelf joint edges when sliding shelf halves into the oven To install hearth core plates or steel hearth assembly proceed as follows Page 7 ASSEMBLY INSTRUCTIONS Continued p us gt A Slide the wooden frame out of the oven Before installing the hearth core plates steel hearth assembly be sure that the bottom heat d
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36. eading of thermocouple or thermometer with thermostat setting If the two do not agree plus or minus 15 degrees F 8 degrees C carefully remove the thermostat dial not disturbing dial settings Hold calibration plate and loosen the two calibration screws until the plate can be moved independently of the control N Turn calibration plate so that the instrument of thermometer reading is in line with the indicator mark Hold plate and tighten screws firmly 55 Replace dial hz NOTE If the above adjustment is prevented by the two loosened calibration lock screws being in contact with the ends of the screw clearance plate to the proper location reassembly screws in the other tapped holes designed for them NOTE NO ATTEMPT TO RECALIBRATE THE OVEN CONTROL SHOULD BE MADE WITHIN THE WARRANTY PERIOD IF THE TEMPERATURE IS WITHIN 20 DEGREES FAHRENHEIT OF THE DIAL SETTING RECALIBRATION SHOULD BE MADE IF THE CONTROL OUT MORE THAN 20 DEGREES FAHRENHEIT AND LESS THAN 50 DEGREES FAHRENHEIT IF THE CONTROL IS OUT MORE THAN 50 DEGREES FAHRENHEIT FROM THE DIAL SETTING THE CONTROL WILL BE REPLACED UNDER WARRANTY WITHIN THE WARRANTY PERIOD Flame Diverters Flame diverters distribute the heat evenly below the deck They must be in good condition and properly placed in the burner chamber in order to be effective Damaged or improperly installed flame diverters adversely affect the oven performance Check
37. eflectors are properly positioned with the treaded side bumps in the up position If the oven is supplied with a steel hearth assembly place the hearth spacers with the flat side in the up position on the extreme left and right sides of the oven resting on the heat deflectors Making sure the hearth spacers are not disturbed slide the steel hearth assembly into the oven If oven is supplied with hearth core plates slide the plates into the oven GPD 48 is supplied with 2 two hearth core plates GPD 60 is supplied with 3 three hearth core plates 5 Installation instruction Hearth a Place a screwdriver or a similar prying device between the core plate and hearth frame support being careful not to chip the core plate then place two spacer clips PN G03086 1 9 between the core plate and the hearth frame support See instructions sheet PN 1917401 6 from front amp 6 from rear b Place a screwdriver between the back of the right core plate and hearth frame support Pry the core plate forward away from the hearth support and place a clip within the space centered on each core plate c Repeat step 2 for the left core plate d Repeat step 3 for the center core plate for 60 unit Double Deck Assembly 1 Secure legs to lower section 2 Remove stainless steel top trim strip from lower unit if not already removed Page 8 3 6 Tip upper unit backward Remove vent patch at
38. lower rear if not if not already removed Place 1 x 4 x 65 25mm x 100mm x 1650mm long piece of lumber across the rear top of oven to prevent stacks from misarranging Raise the top oven section up and onto the lower oven section Carefully remove piece of lumber ensuring lower section vent collar inserts into upper section vent hole Gas Connection 1 The appliance must be isolated from the gas supply piping system by closing its manual shut off valve during any pressure testing of the gas supply piping system at test pressure equal to or less that psig 3 45 kpa he appliance and its shut off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of V psig 3 45 NOTE The ovens should not be installed on the same line with space heaters broilers or other equipment with high intermittent demand When making gas connections uses a pipe joint compound that is resistant to the action of liquefied petroleum gases Each oven is supplied with two possible gas connection locations One is located on the right side and the other is located on the right rear corner he right side connection is plugged with a 94 counter sunken plug If this connection is used you must cap the rear connection The gas pressure regulator is part of the combination valve and is adjusted to yield a pressure of 6 0 water column for
39. natural gas and 10 water column for propane gas Part 1844063 08 06 ASSEMBLY INSTRUCTIONS Continued 7 A separate shut off valve for each oven must be provided It should be as close as possible to the place where the gas line goes into the oven It must be located so that it is easily accessible A handle or wrench should be chained to the valve where it will always be at hand 3 4 NIPPLE 3 4 COUPLING 3 4 3 4 x 1 TEE 6 1 2 3 4 NIPPLE 3 4 COUPLING 8 For a stack of two ovens two shut off valves one for each oven must be provided 3 4 NPT 90 STREET ELBOW 5 3 4 NIPPLE 1 NPT 90 STREET ELBOW 3 4 UNION 3 4 NPT 90 STREET ELBOW ADJUSTMENTS Gas Pressure Adjustments All GPD Series ovens are equipped with fixed orifices and cannot be adjusted for gas flow If necessary pressure adjustments can be made at the pressure regulator located on the combination gas valve A pressure tap is supplied with the unit and it is installed on the manifold downstream of the main valve The gas pressure must be checked when the unit is installed to ensure that the unit gas pressure is the same as specified on the rating plate Part 1844063 08 06 IMPORTANT All gas burners and pilots need sufficient air to operate and large objects should not be placed in front of this oven which would obstruct the airflow through the front Objects should no
40. ncluding 1 Theappliance and its individual shut off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 2 psi 3 45 kPa 2 The appliance must be isolated from the gas supply piping system by closing its individual manual shut off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than psi 3 45 kPa Before assembly and connections check gas supply A The type of gas for which the unit is equipped is stamped on the data plate located behind lower front panel Connect a unit stamped NAT only to natural gas connect those stamped PRO only to propane gas Page 5 INSTALLATION Continued d If it is a new installation have gas authorities check meter size and piping to assure that the unit is supplied with sufficient amount of gas pressure required to operate the unit If it is additional or replacement equipment have gas authorities check pressure to make certain that existing meter and piping will supply fuel at the unit with not more than 2 water column pressure drop NOTE When checking pressure be sure that all other equipment on the same gas line is pressure regulator is supplied with GARLAND Pizza Ovens Regulator is preset to deliver gas at pressure shown on the rating plate Installation Clearances Minimum clearance for combustible and Non
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42. placement parts be sure to refer to the particular unit by the correct model number including the prefix and suffix letters and numbers and the warranty serial number The rating plate affixed to the unit contains this information Part 1844063 08 06 We suggest installation maintenance and repairs should be performed by your local authorized service agency listed in your information manual pamphlet In the event you have any questions concerning the installation use care or service of the product write or call our Product Service Department This product must be installed by professional personnel as specified Garland U S Range products are not approved or authorized for home or residential use but are intended for commercial applications only Garland U S Range will not provide service warranty maintenance or support of any kind other than in commercial applications Gas Connections The inlet manifold size for connection to the main gas supply is 1 34 NPT inlet for each deck The importance of proper installation of Commercial Gas cooking Equipment cannot be over stressed Proper performance of the equipment is dependent in great part on the compliance of the installation with the manufacturers specifications Installation must conform to local codes with the Nation fuel code ANSI 7223 1 Natural Gas Installation code CAN CGA B149 1 or the Propane Installation code CAN CGA B149 2 as applicable i
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44. t be placed on main rear of oven while in use Flame amp Air Mixture Adjustment After the pilot burner is ignited when heat is desired turn gas cock dial to ON position and set the thermostat dial to the desired temperature The oven burner flame should always have a blue appearance This indicates a Page 9 ADJUSTMENTS Continued good mixture of air and gas When using LP gas the flame will have a blue yellow appearance Follow steps 1 thru 4 to adjust the flame for good quality Loosen the small knurled locking disk N Turn the large adjusting disk towards the air mixture throat to reduce the opening This restricts the amount of air causing the flame to turn yellow gt Turn the adjusting disk gradually out away from the air mixer throat allowing more air into the air mixer until the yellow disappears and a sharp blue flame appears ps When the flame turns blue and spreads out turn the locking disk tight against the adjusting disk There may be intermittent yellow orange flame noticed This is caused by dust particles burning in the Flame Should the burners fail to light check to see if there is a problem with any or all of the following gt The gas supply If there are other gas appliances on the same supply line shut them off temporarily and see if the flame comes back on or if it fluctuates as other gas appliances are turned on and off If so it would indicate overlo
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46. ting Shutdown Instructions 1 Open control panel door located on right hand side of unit To access combination gas control 2 Turn gas cock on combination control to the OFF position Wait 5 minutes 3 Turn gas cock on combination control to the PILOT position 4 Depress gas cock and light pilot burner 5 Hold gas cock depressed for one minute after pilot has been ignited then release Pilot should continue to burn 6 If pilot does not continue to burn after releasing gas cock repeat steps 2 thru 5 or have a qualified serviceman check the system Do not allow anyone else to attempt repairs 7 Once pilot is lit turn gas cock to the position It is not necessary to repeat lighting procedure unless the pilot is extinguished by any cause 8 To shut down unit turn gas cock on combination control to the OFF position CLEANING Oven Exterior Painted Surfaces should be cleaned when cool using a mild soap and warm water solution on a sponge or soft clean cloth Rinse and dry thoroughly with a soft clean cloth Stainless Steel Surfaces usually respond to cleaning as noted above Stubborn stains or heat tint may require the use of a commercial type cleaner such as Penny Brite or stainless steel pad Always rub in the direction of the polished lines Rinse thoroughly with fresh water and wipe dry Page 12 Oven Interior Aluminized Steel Surfaces Should be cleaned with a damp soft cloth
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49. wn This ensures that the thermostat is in the by pass mode There should now be small steady flame remaining across the burner without flickering or going out NOTE It may be necessary to turn the thermostat back up to relight the burner s if there is not flame present 4 Using a small screwdriver reach through the access hold on the control panel to the left of the thermostat knob Turn the by pass adjustment screw to raise or lower the by pass flame as required Counter clockwise raises the flame clockwise lowers the flame Take care not to turn the screw out too far as that will allow gas to leak around the adjustment screw Calibration 1 Field calibration is seldom necessary and should not be attempted unless experience with cooking results definitely proves that the control is not maintaining the temperature to which the dial is set 2 Place the thermocouple of the test instrument or reliable mercury thermometer in the center of the oven approximately one or two inches 25mm 50mm above the hearth Do not place the thermocouple directly in contact with the hearth Part 1844063 08 06 ADJUSTMENTS Continued gt Set the thermostat temperature dial to 500 degrees F 260 degrees C and allow the oven temperature to stabilize thermostat must be allowed to cycle twice before taking a test reading des Check the temperature when the burner just cycles off after the second cycle compare the r
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