Vulcan-Hart ML-135309-924RX User's Manual
Contents
1. A 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 After checking for leaks all lines receiving gas should be fully purged to remove air TESTING THE GAS SUPPLY SYSTEM When the gas supply pressure exceeds psig 3 45 kPa the griddle and its individual shutoff valve must be disconnected from the gas supply piping system When the gas supply pressure is psig 3 45 kPa or less the griddle should be isolated from the gas supply system by closing its individual manual shutoff valve GAS PRESSURE REGULATOR INSTALLATION Gas regulator pressure is preset at 5 Water Column W C for natural gas and 10 W C for propane gas No further adjustment should be reguired Install the regulator as close to the griddle on the gas supply line as possible Make sure that the arrow on the underside of the regulator is oriented in the direction of gas flow to the griddle Fig 1 and the regulator is positioned with the vent plug and adjustment screw upright Fig 2 Fig 1 Fig 2 The supply pressure upstream of the regulator should be 7 9 W C for natural gas and 11 12 W C for propane gas At no time should the griddle be connected to supply pressure greater than psig 3 45 kPa or 14 W C ELECTRICAL CONNECTIONS A WARNING Electrical and grounding connections must comply with the applicable portions of the National Electrical Code and or2. STANDARD CUTTING BULLNOSE BOARD 34 OVERAIL 1 7 REAR GREASE STANDARD BULLNOSE 13 TROUBLESHOOTING Heat does not come on Problem with thermostat Call for service when the thermostat is Pilot burner not lit Call for service turned on Problem with gas valve Call for service Manual gas valve not turned on Obstructed pilot orifice Call for service Pilot gas turned off at pilot Call for service Problem with pilot safety valve Call for service Problem with thermocouple Call for service ON OFF switch not in the ON position Pilot burner will not light Obstructed or wrong size pilot orifice Call for service Gas supply not purged of air Call for service Air blowing pilot out Call for service Problem with pilot safety valve Call for service Thermocouple not in flame Call for service Pilot burner will not stay lit Fat appears to smoke Temperature set too high excessively Moisture in food may be turning into steam Food sticks to griddle or Temperature set too high burned around edges or Griddle surface requires cleaning and or seasoning contains dark specs Surface under food not covered with enough cooking oil Temperature set too high Food under cooked inside Food not cooked for long enough time Food itself may have off flavor Food tastes greasy or has Food stored improperly before cooking objectionable off f
3. from Cooking Equipment latest edition available from the National Fire Protection Association Batterymarch Park Quincy MA 02269 In Canada 1 Local codes 2 CAN CSA B149 1 Natural Gas Installation latest edition 3 CAN CSA B149 2 Propane Installation Code latest edition available from the Canadian Gas Association 178 Rexdale Blvd Etobicoke Ontario Canada M9W 1R3 GRIDDLES MOUNTED ON STANDS WITH CASTERS Griddles mounted on stands with casters must use a flexible connector not supplied that complies with the Standard for Connectors for Movable Gas Appliances ANSI Z21 69 CSA6 16 and a quick disconnect device that complies with Gas Fuel ANSI Z21 3 CSA6 9 In addition adeguate means must be provided to limit movement of the appliance without depending on the connector and the guick disconnect device or its associated piping to limit appliance movement Attach the restraining device at the rear of the griddle as shown in Fig 3 Fig 3 Connect Gas Line Strain Relief Here If disconnection of the restraint is necessary turn off the gas supply before disconnecting Reconnect the restraint prior to turning the gas supply on and returning the griddle to its installation position Casters are only supplied on a griddle stand If the griddle is moved for any reason the griddle should be re leveled see LEVELING in this manual FLUE CONNECTIONS Do not obstruct the flow of flue gases from the flue located at the
4. these procedures AFTER EACH USE Clean the griddle with a wire brush of flexible spatula ONCE PER DAY Thoroughly clean the griddle back splash sides and front Remove empty and wash the grease drawer in the same manner as an ordinary cooking utensil ONCE PER WEEK Clean the griddle surface thoroughly Use a griddle stone screen or Scotch Bright pad on the surface as necessary Rub with the grain of the metal while the griddle is still warm not hot A detergent may be used on the plate surface to help clean it but be sure the detergent is thoroughly removed by flushing with clear water After removal of detergent the surface of the plate the griddle should be seasoned according to the instructions in this manual Clean stainless steel surfaces with a damp cloth and polish with a soft dry cloth To remove discoloration use a griddle cleaner If the griddle usage is very high consider conducting this weekly cleaning procedure more than once per week CLEANING A CHROME GRIDDLE PLATE AFTER EACH USE Clean the griddle with a palmetto brush of flexible spatula NEVER USE AN ABRASIVE SCOURING PAD OR GRIDDLE STONE ON A CHROME PLATE SURFACE ONCE PER DAY Thoroughly clean backsplash sides and front Do not hit the backsplash with a spatula or any other tool This may create a gap between the splash and griddle plate that is hard to clean Clean stainless steel and chrome surfaces with a damp cloth and polish with a soft dry cl
5. Heavy Duty Gas Griddles are produced with quality workmanship and materials Proper installation usage and maintenance of your griddle will result in many years of satisfactory performance Thoroughly read this entire manual and carefully follow all of the instructions provided Mod Number of Burners BTU hr Input Rating INSTALLATION Before installing verify that the type of gas supply natural gas or propane agree with the specifications on the rating plate located inside the griddle front panel If the supply and equipment requirements do not agree do not proceed with the installation Contact your dealer immediately UNPACKING This griddle was inspected before leaving the factory The transportation company assumes full responsibility for safe delivery upon acceptance of shipment Check for possible shipping damage immediately after unpacking If the griddle is found to be damaged save the packaging material and contact the carrier within 15 days of delivery Carefully unpack your griddle and make sure that no parts are discarded with packaging material A pressure regulator designed to operate with the griddle has been supplied and must be installed before the griddle is placed into service Refer to GAS PRESSURE REGULATOR INSTALLATION in this manual LOCATION The installation location must be kept free and clear of combustibles When installing never enclose the bottom of the griddle with a raised curb or other construct
6. INSTALLATION amp OPERATION MANUAL 900RX Heavy Duty Gas Griddles s7 v Food Equipment Group VULCAN MODEL MLS 924RX ML 135309 924RX 936RX ML 135310 936RX 948RX ML 135311 948RX 960RX ML 135312 960RX 972RX ML 135313 972RX www vulcanhart com 936RX ITW Food Eguipment Group LLC RETAIN THIS MANUAL FOR FUTURE USE 3600 North Point Blvd Baltimore MD 21222 FORM F 36968 rev 3 08 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 GAS SUPPLIER FOR SERVICE FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS OR LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE A WARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operating and maintenance instructions thoroughly before Installing or servicing this eguipment IN THE EVENT OF A POWER FAILURE DO NOT ATTEMPT TO OPERATE THIS DEVICE INSTALLATION OPERATION AND CARE OF HEAVY DUTY GAS GRIDDLES GENERAL
7. a failure of the electronic ignition system If this happens repeat steps 1 4 with the power switch in the OFF position You will have to reach under the front of the unit and through the pilot cutout to ignite the pilots with an outside ignition source such as a lit taper etc while again depressing the corresponding red button 5 If after completing steps 1 5 and the pilot does not light turn off the main gas shut off to the unit and contact an authorized service agency USING THE GRIDDLE To preheat turn the burners on about 20 25 minutes before cooking A uniform and systematic approach to loading the griddle will produce the most consistent product results The griddle plate is steel but the surface is relatively soft and can be scored or dented by careless use of a spatula or scraper Be careful not to dent scratch or gouge the plate surface Do not try to knock off loose food that may be on the spatula by tapping the corner or the edge of the spatula on the griddle surface ZONE COOKING This griddle features a tubular U shaped burner in 12 sections each controlled by independent thermostats Each 12 section is a separate cooking zone and allows cooking a wide variety of products over a single griddle plate The chart below is a suggested usage of zone cooking When zone cooking it is suggested that you start with your lowest temperature setting at either side of the griddle increasing the zone temperature as you mo
8. e ignition source such as a lit taper etc See pilot lighting procedure on page 8 Each 12 section of the griddle is independently controlled by a mechanical snap action thermostatic valve The thermostats have an operating range of 200 to 550 degrees Once pilots are lit turning the thermostats to the desired setting is all that is required to put the unit into service 900RX PILOT LIGHTING PROCEDURE 1 Turn all thermostats to the OFF position Wait 5 minutes to allow any gas that may have accumulated in the burner compartment to escape 2 Turn on the main gas shut off valve 3 Push the power switches to ON The switches will illuminate and you will hear a clicking sound 4 Depress and hold the red buttons on the pilot safety valves while the electric igniters light the corresponding pilots You will have to monitor the pilot burners through the pilot sight holes The pilot burners are aligned with the red buttons on the pilot safety valves and the pilot sight holes The pilot burners are inset 12 from the front of the unit PILOT BURNER PILOT SIGHT HOLE PILOT SAFETY VALVE BUTTON POWER SWITCH CUTAWAY VIEW 4 Watch for the pilot burners to ignite When the gas at the pilot has been burning for about 45 seconds release the corresponding red button If the pilot does not remain lit repeat the procedure allowing more time before releasing the button 5 The pilot burners can be lit manually in the event of
9. erly and will need to be replaced temperature dial screws and knob set SCrews 11 VES VETS EVE VES SESS EST PREVI TS Te VALVES ESTEVE TV 1 oe Step 4a Set knob amp check Temperature Remove knob Step 4b Adjust temperature dial amp verify temperature setting Step 5 Replace knob amp tighten screws LEVELING The griddle must be level side to side and front to back during operation to ensure proper performance Improper leveling can result in uneven temperature distribution cold spots and possibly damage electrical components 1 Place a level on the griddle 2 Adjust legs by turning the bullet feet at the bottom of each leg Using pliers or a crescent wrench turn the feet counter clockwise to increase height and clockwise to decrease height until leveling is achieved Do not extend the legs more than 1 54 PILOT ADJUSTMENT Using a flathead screwdriver turn the slotted hex head pilot adjustment screw clockwise to decrease the flame and counterclockwise to increase the flame Pilot adjustments should only be performed by Service Personnel SHUTDOWN OF GRIDDLE WITH ELECTRIC IGNITION SYSTEM 1 Turn thermostats to the OFF position to cut off burners 2 Push the power switches to OFF This will cause electrical power to be turned off to the igniters 3 The pilots will remain lit and monitored by the safety valve as long as the main gas Supply is o
10. f surface Use a soft lint free cloth to spread the oil over the entire griddle surface to create a thin film Wipe off any excess oil with a cloth Repeat the procedure until the griddle has a slick mirror like finish CONTROLS There is one pilot and one safety valve for every two burners except on the 36 and 60 models The 36 and 60 models have an odd number of main burners therefore one of the sets of pilots and safety valves in these models will control only one main burner The pilot burners are aligned with the safety valve bush buttons and pilot sight holes The pilot burners are inset 12 from the front panel This model features an electric ignition system that is controlled by the power switch The power switch turns the electric ignition system off and on only It is recommended that the power switch stay in the ON position while the unit is running The burners and pilots will continue to work with the power switch in the OFF position until the gas supply to the unit is cut off The pilots are monitored by thermocouples and pilot safety valves If the pilot goes out and the corresponding power switch is in the ON position the igniter will immediately reignite the pilot If the pilot does not achieve reignition in a short period of time the safety valve will shut off the gas supply to the pilot and main burners In the event of a failure of the electronic ignition system it is possible to ignite the pilots with an outsid
11. ions that would obstruct flow of air into or out of the griddle 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 ventilation system Do not permit air to blow directly at the griddle Avoid open windows next to the griddle wherever possible Avoid wall type fans which create air cross currents within the room 3 This griddle is Design Certified for installation on a non combustible counter with 4 legs or combustible floor with 25 high stand INSTALLATION CLEARANCES COMBUSTIBLE CONSTRUCTION NON COMBUSTIBLE CONSTRUCTION Back 6 0 Right 6 0 Left Side 6 0 INSTALLATION CODES AND STANDARDS The griddle 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 NFPA 54 latest edition This shall include but not be limited to NFPA 54 Section 10 3 5 2 for Venting Copies may be obtained from The American Gas Association Accredited Standards Committee Z223 400 N Capital St NW Washington DC 20001 or the Secretary Standards Council NFPA 1 Batterymarch Park Quincy MA 02169 7471 NOTE In the Commonwealth of Massachusetts All gas appliances vented through a ventilation hood or exhaust system equipped with a damper or with a power means of exhaust shall comply with 248 CMR 3 NFPA Standard 96 Vapor Removal
12. lavor Too much griddle fat used Temperature set too low Temperature set too high Griddle surface needs cleaning and or seasoning Too much griddle fat used Noticeable build up of gum on griddle _14
13. n EXTENDED SHUTDOWN 1 Shut off the main gas supply valve 2 Unplug the griddle electrical supply cord 3 Apply a heavy coat of vegetable oil over the griddle plate to inhibit rust MAINTENANCE A WARNING The griddle and its parts are hot Use care when operating cleaning or servicing the griddle LUBRICATION There are no parts on this unit that require lubrication VENT Daily when the griddle is cool check the flue and clear any obstructions _12 SERVICE AND PARTS INFORMATION Contact the Service Agency in your area to obtain service and parts information For a complete listing of Service and Parts depots refer to or www vulcanhart com When calling for service the following information should be available from the appliance serial plate Model Number Serial Number and Gas Type ACCESSORIES STANDS The griddle has an optional 24 high by 30 deep by 24 36 48 60 or 72 wide stainless steel stand with casters or flanged legs The front casters lock and flanged legs may be bolted to the floor The stand includes a top shelf with marine edges style lip and a lower shelf When mounted on a stand with standard legs and properly leveled the griddle plate cooking surface should approximately 36 from the floor CUTTING BOARDS amp TOWEL BARS Refer to the installation instructions provided with the cutting board or towel bar kit 33 OVERALL Po OVERALL 2 ONT REE 7 5 FRONT GREASE
14. oth 10 ADJUSTMENTS CALIBRATION 1 Once calibration is achieved tighten the Each thermostat controls a 12 zone of the griddle Using a Surface Probe temperature measurement device observe the temperatures at the center points of the cooking zones These points are located by starting 6 from the side splash left or right and every 12 across the width of the griddle with all points located 12 back from the front edge of the griddle plate NOTE Use of infrared thermometers is not recommended These devices are highly sensitive to surface color clean or dirty angle of reading and distance from the unit Set thermostats to 350 F and allow to stabilize allowing the indicator light to cycle ON and OFF at least two times Watch for indicator light to cycle OFF then measure the temperature for that zone The temperature should be 350 F 15 F If not continue to Step 4 a Carefully loosen the knob set screw DO NOT allow the knob to turn Carefully remove the knob from the thermostat shaft exposing the temperature dial b Loosen screws on the temperature dial and adjust to that the temperature indicated by the knob arrow matches the griddle plate temperature reading Knob will have to be placed back on the shaft to verify adjustment IMPORTANT NEVER ADJUST THE SCREW IN THE CENTER OF THE THERMOSTAT SHAFT This will ruin the factory calibration the thermostat will no longer operate prop
15. other local electrical codes A WARNING Disconnect the electrical power to the griddle and follow lockout tagout procedures A WARNING ppliances 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 Power supply for electric ignition is 120 volts 1 amp 50 60 Hertz 1 phase Do not connect the griddle to electrical supply until after gas connections are made OPERATION A WARNING The griddle and its parts are hot Use care when operating cleaning or servicing the griddle BEFORE FIRST USE Before leaving the factory the griddle is coated with vegetable oil as a rust inhibitor Remove this film when the griddle plate is being cleaned prior to its first cooking use Heat the griddle to 200 300 F to loosen and melt the coating then clean the surface with a non corrosive grease dissolving commercial cleaner following the manufacturer s directions Rinse thoroughly and wipe dry with a soft clean cloth Clean all accessories 6 SEASONING THE GRIDDLE Season the griddle to avoid possible surface corrosion before first use and after every cleaning Heat griddle to a low temperature 300 350 F and apply a small amount of cooking oil about one ounce per square foot o
16. rear of the griddle It is recommended that flue gases be ventilated to the outside of the building through a ventilation system installed by qualified personnel From the termination of the flue to the filters of the hood venting system a minimum clearance of 18 must be maintained Information on the construction and installation of ventilating hoods may be obtained from the standard for Vapor Removal from Cooking Equipment NFPA No 96 latest edition available from the National Fire Protection Association Batterymarch Park Quincy MA 02269 STANDS The griddle has an optional 25 high by 30 deep by 24 36 48 60 or 72 wide Stainless steel stand with casters The two front casters lock The stand includes a top shelf with marine edges style lip and a lower shelf GAS CONNECTIONS NOTICE Gas supply connections and any pipe joint compound must be resistant to the action of propane gases Use a NPT gas supply line for the griddle inlet located at the rear of the griddle All of flexible and semi rigid gas supply lines must comply with the applicable ANSI standard To ensure maximum operating efficiency this appliance must be connected with a gas supply line of solid pipe or a commercial type Flexible Connector with the net inside diameter I D as large as or larger than the gas pipe inlet on this appliance Codes reguire that a gas shutoff valve must be installed in the gas line upstream of the griddle
17. ve up the zone line These zone cooking guidelines will vary depending on product temperatures size and shape This guide should be adjusted to suit your product and operational cooking preference ma mus mm ee o mas a m ee ee v a n an a ee vaa ee ee ee sms sm N ZONE 1 ZONE 2 ZONE 3 ZONE 4 300 F 350 F 350 F 400 F PRODUCT PRODUCT PRODUCT Sausage Pancakes Omelet Steak Rare Eggs Hard Fried French Toast Hash Browns Stir Fry Vegetables Eggs Scrambled Bacon Canadian Bacon Salmon Burger Well Done Eggs Sunny Side Up Fish Cakes Steak Well Done Boiled Ham Lobster Chicken Breast Steak Medium Well Scampi Frozen Foods Fresh Burger Medium Well Pork Chops Small Frozen Burger Medium Well CLEANING THE GRIDDLE Empty the grease drawer as needed throughout the day and regularly clean at least once daily Clean the griddle regularly A clean griddle always looks better lasts longer and performs better To produce evenly cooked perfectly browned griddle products keep the griddle plate clean and free of carbonized grease Carbonized grease on the surface hinders the transfer of heat from the griddle surface to the food resulting in spotty browning and loss of cooking efficiency Carbonized grease tends to cling to griddle foods giving them a highly unsatisfactory and unappetizing appearance To keep the griddle clean and operating at peak efficiency follow
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