Hobart HO300G User's Manual
Contents
1. 4 To change the settings in a Step press the UP arrow in the STEPS section and make changes in each step accordingly 5 To store the program press the PROGRAM UP or DOWN arrows to move to the next program number or press the POWER ON OFF button to exit the program mode 7 USING THE PROGRAMS 1 Press the PROGRAM UP or DOWN arrows to select the desired program number 1 99 The TEMP BAKE STEAM and AIRFLOW DELAY settings are displayed O oo fF STEPS 94 2 1 Confirm that the oven is at the set baking temperature Slowly open the doors Wait for the rack to come to a stop Load product into oven Close the doors Press START A beeper will sound after the BAKE TIMER times out Press STOP to silence the beeper Check product for doneness IF NOT DONE If more bake time is needed press the Bake Timer UP ARROW key until the desired time appears on the Minutes Set window Press the START Key The Timer On indicator light will start blinking IF DONE Allow rack to stop and remove pans Program Hints The oven defaults to the Program 0 settings when first turned on Program 0 settings are as follows Temp 375 F Bake Timer 0 Steam Timer 0 Delay Timer 0 Program 0 Any combination of bake settings can be manually entered for one time custom baking operations These settings are not saved to the program memory lf any of the baking parameters are changed in a program b2. MODELS HO300G AND MINI ROTATING OVENS MODEL ELECTRIC ML 132177 HO300G GAS ML 132178 HOBART 701 S RIDGE AVENUE TROV OHIO 45374 0001 937 332 3000 www hobartcorp FORM 36705 Oct 2005 IMPORTANT FOR VOUR SAFETV 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 BV THIS MANUAL POST IN A PROMINENT LOCATION THE INSTRUCTIONS BE FOLLOWED IN THE EVENT THE SMELL OF GAS IS DETECTED THIS INFORMATION SHOULD 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 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 EQUIPMENT IN THE EVENT OF A POWER FAILURE DO NOT ATTEMPT TO OPERATE THIS DEVICE KEEP AREA AROUND OVEN CLEAR OF COMBUSTIBLES DO NOT OBSTRUCT COMBUSTION AND VENTILATION OPENINGS ON THE OVEN This manual has been prepared to provide information in accordance with ANSI 283 11 2004 for gas equipment HO
3. 1 Gas 27 7 A 27 SPURL OY 9 E 27 Parts service 27 OWNER PREVENTIVE MAINTENANCE 28 MUOU 28 Preventive Maintenance Procedures 28 OPERATION AND CARE OF MODELS HO300G AND MINI ROTATING RACK OVENS KEEP THIS MANUAL FOR FUTURE USE GENERAL Models HO300G Gas HOSOOE Electric Mini Rotating Rack Ovens feature the choice of two rack configurations e Eight 18 x 26 45 7 cm x 66 pan capacity rack with 4 10 2 cm slide spacing e Six 18 x 26 45 7 cm x 66 cm pan capacity rack with 5 31 13 5 cm slide spacing Both oven rack options can be ordered in an end load or side load design A mechanism in the ceiling rotates the rack during baking Model HO300G is rated at 95 000 BTU hr natural or propane gas Model HOSOOE is rated at 18 0 kW electric Hobart Mini Rotating Rack Ovens are produced with quality workmanship and material Proper installation usage and maintenance of the rack oven will result in years of satisfactory performance It is suggested that you thoroughly read this manual and carefully follow the instructions provided INSTALLATION In order to validate the warranty the start up must be performed by an Authorized Service Representative Before installing verify that the electrical servic
4. 60 Hz single phase supplv with ground connected at the control circuit terminal block located behind the right side service panel If oven is installed in conjunction with an HPC800 Proofing Cabinet a separate 120 V supply is required for the proofer OPERATION WARNING THE MINI RACK OVEN AND ITS PARTS ARE HOT USE CARE WHEN OPERATING SERVICING OR CLEANING THE OVEN CONTROLS AUTO ON OFF TIMER auTO ON OFF TIME TIME MINUTES SET MINUTES REMAINING SECONDS AIRFLOW DELAY SON MINUTES Control Guide POWER Press to turn the oven Control panel displavs are lit when the oven is on Oven ON defaults to Program 0 If oven is turned OFF and back ON within 2 minutes the oven will come up in the last mode and oven setting AUTO ON OFF Press to enter current time The AUTO ON OFF TIMER window displays the current TIMER or time for oven to time or the time the oven will automatically turn ON or automatically turn ON or OFF OFF when corresponding Auto On Time or Auto Off Time button is pressed Press arrow keys to set The AUTO ON OFF TIMER window displays the time the desired time of oven to the oven will automatically turn ON automatically turn ON Press arrow keys to set The AUTO ON OFF TIMER window displays the time the desired time of oven to the oven will automatically turn OFF automatically turn OFF ER ON OFF Press to turn the automatic The indicator light beside the timer O
5. BAKERY SYSTEMS SERVICE OFFICE DO NOT ATTEMPT TO RESTART THE OVEN UNTIL IT HAS BEEN INSPECTED BY AN AUTHORIZED SERVICER PROGRAMMING THE OVEN Single Step Programming The program menu stores up to 99 programs that can be recalled bv number when needed A program is a set of baking instructions temperature bake steam and airflow delay settings that the operator defines for any baking operation ON POWER 1 With the oven in the OFF mode press and hold the UP arrow in the STEPS section While pressing and holding the UP arrow press the POWER ON OFF button for 3 seconds When the beep sounds the oven is in program mode 2 Press the PROGRAM UP or DOWN arrows until the program number that is desired is displayed 3 Press the TEMP UP or DOWN arrows to enter the desired temperature MINUTES SET MINUTES REMAINING STEAM TIMER ON SECONDS AIRFLOW DELAV 4 Set the Bake Steam Delav Airflow and Vent settings Press the UP or DOWN arrows next to BAKE TIMER to enter the desired time e Press the UP or DOWN arrows next to STEAM TIMER to enter the desired time e Press the UP arrow next to AIRFLOW DELAY to enter the desired time NOTE Steam and airflow delay settings are optional and can be left at O if desired e Press the VENT button to vent the cavity for the entire time of the step When step is complete vent will close 5 To store the program press the PROGRAM UP or DOWN arrows to move to the nex
6. ee fe a me fo fe NOTE The proofer must be wired separately from the oven DA CONTROLS Proofing 1 Turn the power switch to the ON position 2 Turn the temperature knob to the desired setting 3 the humiditv knob to the desired setting 4 Allow 15 to 20 minutes for proofer to reach set temperature and humidity Load the product the proofer 6 Turn the power switch to the OFF position when done Proofing Hints Controlled temperature and humidity in the proofer promotes yeast fermentation which generates gas and causes the dough to Proofing will vary from product to product A temperature setting of 95 F 35 C and humidity at 85 are typical but will vary depending on the product being proofed and the amount of product being proofed 65 120 TEMPERATURE 65 95 HUMIDITY e For best results proof at lower temperatures rather than higher temperatures e Todry proof set humidity to the lowest setting At this setting the humidity generator is turned off and will not produce humidity e For the best results always allow your proofer to reach set temperature and humidity before putting product in _25 MAINTENANCE WARNING THE MINI RACK OVEN AND ITS PARTS ARE HOT USE CARE WHEN OPERATING SERVICING OR CLEANING THE OVEN WARNING DISCONNECT THE ELECTRICAL POWER TO THE OVEN AND FOLLOW LOCKOUT TAGOUT PROCEDURES GENERAL As Needed e Inspect the ar
7. outlet and floor drain If oven is being installed on an HPC800 Proofing Cabinet it is recommended that separate drain lines be provided If it is necessary to interconnect the oven and proofer drains provide a vent opening in the drain line above the oven drain connection location Adequate drop must be provided such that the oven drain will not flood the proofer cabinet 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 DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES WARNING APPLIANCES EQUIPPED WITH A FLEXIBLE ELECTRIC SUPPLY CORD ARE PROVIDED WITH A THREE PRONG GROUNDING PLUG THIS PLUG MUST 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 The wiring diagram is located behind the side service panel on the right side of the oven Do not connect the HO300G gas model to the electrical supply until after gas connections have been made The HOSOOE is an electrically heated oven consisting of six W shaped elements each rated at 3 0 kW for a total input of 18 0 kW The electrical input is shown in the table below Heating Circuit Supplv Voltage Both gas and electric ovens require a dedicated 15 amp 110 V 50 Hz or 120
8. the SET TEMP window B MINUTES SET MINUTES REMAINING 7 9 POWER SECONDS AIRFLOW DELAV ONI MINUTES Changing Items in Setup Mode The number in the SET TEMP window is the setup number The BAKE TIMER window displays the setup item the settings that can be changed 1 To change the setup number press the SET TEMP UP or DOWN arrows The setup item will be displayed in the BAKE TIMER window KON MINUTES SET MINUTES REMAINING STEAM TIMER lt ON SECONDS AIRFLOW DELAY M 2 To make a change in the setup item being displayed press the BAKE TIMER UP or DOWN arrows To adjust the setting see Setup Guide Do not attempt to change item numbers P4 P5 and P8 Consult your authorized Hobart Bakery Systems service agency for help with these features 3 To exit the setup mode press the POWER ON OFF button 19 Setup Guide Setup Number Displav PI Maximum Temperature This is the maximum temperature at which the oven can be Setpoint set Range is 50 F to 525 F 10 C to 274 C P2 Preheat Temperature This is the default temperature setpoint when the oven is first turned on Program 0 The preheat temperature cannot be set higher than the value in P1 Range is 50 F to 525 F 10 C to 274 C P3 Minimum Temperature This is the minimum temperature at which the oven can be Setpoint set Range 15 50 F to 200 F 10 C to 93 P4 Temperature Offset This
9. value permits an offset of correction between the temperature probe and the real baking chamber temperature Call your authorized Bakery Systems service agency for help with this feature Heat OFF Offset This value adjusts the temperature difference between the set point and stopping of the heating system Call your authorized Bakery Systems service agency for help with this feature Heat Difference Hysteresis This value adjusts the temperature difference between the on temperature and off temperature of the heating system Call your authorized Bakery Systems service agency for help with this feature Maximum Steam Time Time set is the maximum time in seconds that water is supplied during the STEAM TIMER operation Temperature Units The oven can be set to display temperature in Fahrenheit or Celsius To ensure accurate temperature parameters call your authorized Bakery Systems service agency for help with this feature Bake Timer Mode The BAKE TIMER can be set up to display minutes set minutes remaining or hours and minutes Select 0 for minutes set minutes remaining or 1 for hours and minutes If this parameter is changed to hours and minutes a label has been provided to place on the control panel to indicate the change N 0 Vent Evacuate Time Time set is the time in seconds that the vent is 100 open at the beginning of the venting cycle Range is 0 to 180 seconds P11 Vent Open This value is th
10. BART 2005 TABLE OF CONTENTS GENERAT e 4 INSTALLAT IO Ni E E A EE E E A AEE 4 eer eet E E E ee 4 LOC WON oeri E E E E 5 Installation Codes and StandardS 5 AS ONDI 5 216 CONNECHONS e E E EA 6 Testing the Gas Supply System sies e 6 NONO eee 6 FU MDINA a e ele 6 CONNEC MOTA 7 Electrical 7 OPERATIONS 8 8 COC 11 Basic OD CEA OM f 12 Food Servic Steam 14 EA ANI 14 Programming Me 15 tne 18 Customized OD CF ALO ii a e ENAKAN 19 a E E E E 22 ie oe E 22 ACCESSORIES 800 PROOFING 23 FMI CONS b l 23 Drar COMING COS ea ia 23 Electrical Connections 23 Dimensions and Service Connection Diagram s sisien io isib 24 GOTOR 25 MAINTENANCE ar 26 CC TA P ot 5 ence esses cesses ste ness onab ieee A AAE A TEE E EEE E AE A EE EEE 26 Parts and Service Information nenne nnn 26 TROUBECE FOOTING aer E 27 Burners Will Not Light
11. CGA 6 16 and a quick disconnect device that complies with the Standard for Quick Disconnect Devices for Use With Gas Fuel ANSI 221 41 Quick Disconnect Devices for Use with Gas Fuel CAN1 6 9 2 adequate means must be provided to limit the movement of the appliance GAS 5 CAUTION Gas supplv connections and pipe joint compound must resistant to the action of propane gases The HO300G is an indirect gas fired oven consisting of a heat exchanger with eight independent U shaped tubes each with a separate in shot burner rated at 11 875 BTU hr for a total input of 95 000 BTU hr 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 When gas supply pressure exceeds 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 2 psig 3 45 kPa orless the oven should be isolated from the gas supply system by closing its individual manual shutoff valve VENTILATION 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 Exhaust Fan Interlock A connection point maximum 5 amps is provided for In
12. Contact your authorized Hobart Bakery Systems service agency 97 OWNER PREVENTIVE MAINTENANCE PROCEDURES INTRODUCTION This customer preventive maintenance PM section includes procedures to inspect for proper operation and cleaning of components Owner Preventive Maintenance Procedures are written for gas ovens They can also be used for electric ovens by omitting the steps that refer to components found only on gas ovens Customer PMs should be conducted bi monthly per OSHA Bakery Oven Inspection Standard 29 CFR 1910 263 1 9 ii A convenient PM Checklist is provided at the end of this section NOTE This PM procedure does not discuss repair or replacement of components Upon completion of the PM procedure you will need to contact a Hobart Bakery System service agency for any needed repairs Tools Used For Inspection Procedure e Standard set of hand tools e Vacuum cleaner shop vac PREVENTIVE MAINTENANCE PROCEDURES WARNING DISCONNECT THE ELECTRICAL POWER TO THE OVEN AND FOLLOW LOCKOUT TAGOUT PROCEDURES WARNING SHUT OFF THE GAS BEFORE SERVICING THE UNIT WARNING CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES IF TEST POINTS ARE NOT EASILY ACCESSIBLE DISCONNECT POWER AND FOLLOW LOCKOUT TAGOUT PROCEDURES ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST 28 Inspect Oven Lamps 1 Lamps should be on when ove
13. N OFF button is timer ON or OFF lit when the function is enabled ON O OFF SET TEMP Use to enter bake programs The SET TEMP window displays the set temperature The heat ON light is lit while the oven is heating The 8 actual temperature in the oven cavity is displayed in the OVEN TEMP window BAKE TIMER Press arrow kevs to enter BAKE TIMER window displays the amount of time the BAKE time for the current baking cvcle The minutes set are the 1 minute increments left two digits and minutes remaining are the right two Press the up arrow kev digits The windows can be set to displav hours and to enter additional time minutes remaining The ON light is lit when bake time at the end of the bake is active program STEAM TIMER Press to enter the STEAM The STEAM TIMER window displays the amount of time 5 second increments time set for the steam cycle The ON light is lit when 8 in Bakerv mode 1 the steam svstem is active increments in Food Service mode AIRFLOW Press to enter into beginning The DELAY TIMER window displays the amount of DELAY of baking cycle time set for the circulation blower delay cycle a 0 9 minutes Press to start the The ON light blinks when the BAKE TIMER is active BAKE TIMER Control Guide cont Press to stop the BAKE The ON light is off when the BAKE TIMER is inactive TIMER or silence the beeper after the BAKE TIMER has timed out PROGRAM Press the The PROGRAM wi
14. ature Care should be taken not to overbake products To adjust the temperature during a baking cycle press the UP or DOWN arrows in the Oven Temp section to enter the new temperature To adjust the BAKE STEAM and AIRFLOW DELAY settings press the corresponding arrows to enter the new values Press START when finished Circulation blower will pulse during a steam cycle to assist steam distribution It does not attain full speed If the doors are opened at any time during the baking cycle the TEMP BAKE TIME STEAM and AIRFLOW DELAY settings will pause Close the doors to resume all functions The AIRFLOW DELAY option minimizes airflow at the beginning of the baking cycle The heat is off while the AIRFLOW DELAY is activated If the oven temperature is more than 20 F 11 C higher than the set temperature and the bake timer is not activated the oven will automatically open the VENT The VENT will remain open until the oven temperature is within 20 F 11 C of the set temperature The oven monitors the heating system by comparing the current oven temperature to the set temperature If a problem arises in the heating system or there is a heating system failure both temperature displays will flash If the problem continues contact your authorized Bakery Systems service agency The COOL DOWN feature provides a means of cooling down the oven To enable this feature set a temperature at least 25 F 14 C cooler than the oven temperatu
15. ber 4 Set the desired time between steam cycles using the UP or DOWN arrow buttons The range is from 300 seconds 5 min to 990 seconds approximately 17 min and increments by 10 seconds at time 5 After setting the desired cycle press the POWER ON OFF button to save the settings 6 The STEAM TIMER will now operate in 1 second increments up to 10 seconds to set the duration of steaming Examples 300 is selected for P14 3 is entered in STEAM TIMER steam is turned on for 3 seconds every 300 seconds 5 min 990 is selected for P14 3 is entered in STEAM TIMER steam is turned on for 3 seconds every 990 seconds 17 min To return the oven to Bakery Mode repeat the above process to access P14 and set the value in the BAKE TIMER window to 0 The STEAM TIMER will now operate in 5 second increments SAFETY ALARM STANDARD FEATURE NO PARAMETER SETUP REQUIRED If the temperature at the probe is in the range of 570 600 degrees Fahrenheit for 10 seconds the unit will do the following 1 Shut off all features 2 Sound an alarm 3 Flash the OVEN TEMP display actual temperature is displayed 4 Display the letters SHdn in the BAKE TIMER display WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES THERE MAY BE MULTIPLE CIRCUITS BE SURE ALL CIRCUITS ARE DISCONNECTED WARNING IF GAS OVEN SHUT OFF GAS CONTACT YOUR AUTHORIZED HOBART
16. direct Vent Exhaust Hood or optional Direct Vent Draft Hood It is located behind the right side service panel adjacent to the 120 V power connection Consult local codes for vent interlock requirements Indirect Vent Under Exhaust Hood Standard Locate the oven under an exhaust hood with adequate overhangs and exhaust rates to completely capture the byproducts of combustion discharged from the flue From the termination of the flue to the filters of the hood venting system a minimum clearance of 18 must be maintained The hood exhaust fan must be electrically interlocked with the oven PLUMBING CONNECTIONS WARNING PLUMBING CONNECTIONS MUST COMPLY WITH APPLICABLE SANITARY SAFETY AND PLUMBING CODES Oven water supply should have a hardness of 4 to 6 grains per gallon pH of 6 5 to 8 0 and chlorides less than 30 PPM Water condition outside of these requirements may void the warranty Please consult your local water company and or water condition dealer before installing oven Connect the cold water supply to the 2 NPT incoming water connection located at the rear of the oven with the 6 ft flexible clear water line provided Water supply should have a pressure of 30 to 75 psi 207 to 517 kPa when the steam solenoid is open DRAIN CONNECTIONS Connect a gt drain line to the 2 NPT drain connection located at the rear of the oven Route the drain line to a floor drain allowing a minimum 1 air gap between the drain line
17. e not been obtained contact vour local Hobart Bakerv Svstems service office 33 Verifv Operation of Steam 1 Check steam svstem for proper operation A Turn the water supplv Turn the oven on and set to normal bake temperature Allow to cvcle three times to stabilize temperature Set control to call for steam Observe operation If steam is not observed contact your local Hobart Bakery Systems service office After completion of the Owner PM Procedures you will need to contact a qualified servicer for any needed repairs Keep a copy of the Owner Preventive Maintenance Checklist for your records A COPV AS NEEDED MODEL SERIAL NUMBERS RECOMMENDED OWNER PREVENTIVE MAINTENANCE CHECKLIST BAKERY RACK OVENS GAS CHECK FOR PROPER OPERATION OR CLEAN CALL FOR SERVICE AS NECESSARY ean ara vacuum compares areas 1 ion mode skont uara 4 PROCESS COMPLETED PM Frequency LI Bi monthiv Tvpe of Gas Natural Gas _ Propane Location Store No Inspector Date Completed Service Notified for Necessary Repairs Comments Inspector Signature 45 FORM 36705 Oct 2005 o PRINTED IN U S A
18. e s and type of gas supply natural or propane agree with the specifications on the data plate located on top of the oven If the supply and equipment requirements do not agree do not proceed with the installation Contact Hobart Bakery Systems immediately UNPACKING This oven was inspected before leaving the factory The transportation company assumes full responsibility for safe delivery upon acceptance of the shipment Immediately after unpacking check for possible shipping damage If the oven is found to be damaged save the packaging material and contact the carrier within 15 days of delivery Carefully unpack the oven and place in a work accessible area as near to its final installed position as possible Remove protective covering from exterior surfaces prior to placing oven in final location LOCATION The HO300G and Mini Rotating Rack Ovens must have the following minimum clearances to combustibles e Back and sides 0 e Bottom 0 e Top 18 45 7 cm NOTE Minimum 24 clearance needed for service access on the right side If right side is within 30 of radiant heat or grease vapor source vent guard is required Be sure that electrical water and drain connections are accessible and can be made per local and national codes The equipment area must be kept free and clear of combustible substances Do not obstruct the flow of combustion and ventilation air Adequate clearance for air openings into the combustio
19. e seconds the bake chamber vent is open per 60 seconds after the vent evacuate time has expired Range is 5 to 59 P12 End of Bake Automatic This feature enables the Automatic Vent Cycle Select 0 to Vent Enable disable or 1 to enable this feature see P13 for entering time P13 End of Bake Automatic This is the number of minutes before the end of the bake Vent Time cycle that the vent is open 20 Setup Guide cont Setup Number Displav P14 Steam Timer Mode The STEAM TIMER can be set up to function in Bakerv mode single steam function at the beginning of step cycle or Food Service mode 300 to 990 seconds interval between steam functions Interior Light Brightness This value is the brightness of the interior lights The higher the number the brighter the lights Range is 50 to 100 Clock Operation This selects either 12 hours AM PM or 24 hours real time displav Press the Bake Time Up button to switch between the two tvpes of displav Setback Temperature This selects the oven set temperature that the oven will change to when the temperature setback time has been exceeded in P17 Range is 50 F to 300 F 10 C to 149 C Lights Mode Select 1 for lights on continuously when oven is on or select 0 for automatic operation Lights will turn off automatically after 30 minutes of no user activity door opened or closed no buttons pushed P17 Temperature Setback Time This selects the elapsed time from the last t
20. ea around the oven The area must be free and clear from combustibles There must be no obstructions to the air flow Daily e Clean exterior See Cleaning Weekly NOTE Do not change air shutter settings when cleaning oven interior e Clean the oven interior and remove loose debris See Cleaning e Clean the windows Bi Monthly e Owner Preventive Maintenance Procedures Preventive Maintenance The mini rack oven should be kept on a regular preventive maintenance schedule Ovens require specific preventive maintenance based on usage and environmental factors The failure to have the oven properly maintained by following recommended preventive maintenance procedures may result in higher repair costs shortened equipment life or unsafe operating conditions The performance of routine preventive maintenance on any rack oven which is the owner s responsibility will help to ensure continued safe and reliable operation A preventive maintenance program is your best option for continued safe and reliable oven operation We believe that Hobart Bakery System Service is your best choice for performing preventive maintenance PARTS AND SERVICE INFORMATION Contact your authorized Hobart Bakery Systems service agency 26 TROUBLESHOOTING The oven has been set at the factory to bake assorted product such as bagels cookies and muffins If your bake is uneven the shutters may need to be adjusted to achieve the desired results Contact yo
21. efore or during a bake cycle the oven reverts to manual program Program 0 indicating that the program has been altered The oven will continue to operate all the program steps as displayed The PROGRAM UP and DOWN arrows have no effect while the bake cycle is in progress However if the BAKE TIMER has been stopped either by pressing the STOP button or by opening the door then pressing the PROGRAM UP and DOWN arrows will select a new program and cancel the baking cycle that was in progress When selecting programs the system will skip over unprogrammed numbers For example if Program 1 is displayed in the PROGRAM window and no programs are stored in 2 3 and 4 then the system will skip over 2 3 and 4 Program 5 will be the next program displayed Vent opening programs the vent to open for P10 seconds full open and then for P11 seconds every 60 seconds 18 CUSTOMIZED OPERATION The Mini Rack oven controls have the capabilitv of being customized to fit vour own personal needs using the setup mode Before entering the setup mode read all the instructions to make sure you are completely clear on what to do If you need assistance please call your authorized Hobart Bakery Systems service agency Entering Setup Mode With the oven in the OFF mode press and hold the START button While pressing and holding the START button press the POWER ON OFF button for 3 seconds The oven is now in Setup mode and P1 is displayed in
22. g operations Basic Operation WARNING THE OVEN AND ITS PARTS ARE HOT TO PREVENT BURNS USE HOT PADS OR PROTECTIVE MITTS WHEN LOADING OR UNLOADING THE OVEN WARNING HOT AIR AND STEAM ARE RELEASED FROM THE OVEN INTERIOR WHEN THE LOADING DOORS ARE OPENED TO AVOID BURNS OPEN THE DOORS SLOWLY AND KEEP CLEAR OF THE OPENING 1 Preheat the oven See Oven Preheat 2 Manually select baking settings MINUTES SET MINUTES REMAINING AIRFLOW DELAV j g 2 a Press the UP or DOWN arrows next to BAKE TIMER to enter the desired value e Press the UP or DOWN arrows next to STEAM TIMER to enter the desired value e Press the UP arrow next to AIRFLOW DELAY to enter the desired value e The steam and airflow delay settings are optional and can be left at O if desired 3 Slowly open the doors Wait for the rack to stop Load the oven Close the doors 4 Press the START button The ON light in the BAKE TIMER window blinks until the timer times out 5 The oven beeps after the BAKE TIMER times out Press STOP to silence the beeper 12 Operational Hints On the initial startup the oven temperature will default to the factorv setting of 3757F 1917C unless changed using customized operations During a baking cycle the START and STOP buttons control the BAKE STEAM and AIRFLOW DELAY settings only They have no effect on the oven heat When the BAKE TIMER times out the oven heat stays at the set temper
23. imed bake to when the oven will lower the oven set temperature to the value set in P18 Range is 10 to 180 minutes 0 SHUTDOWN NOTE Before restarting a gas oven power and gas burner valve must be off for a minimum of 5 minutes 1 Remove all remaining product NOTE Vent can be used to evacuate steam from oven 2 Allow the oven to cool then press the POWER ON OFF button 3 Clean the baking chamber See Cleaning 4 For lengthy shutdowns disconnect the main power and shut off the gas and water supply CLEANING WARNING THE MINI RACK OVEN AND ITS PARTS ARE HOT USE CARE WHEN OPERATING SERVICING OR CLEANING THE RACK OVEN WARNING DISCONNECT THE ELECTRICAL POWER TO THE OVEN AND FOLLOW LOCKOUT TAGOUT PROCEDURES Allow the oven to cool Clean the outside of the oven daily with a clean damp cloth Clean rack as you would any cooking utensil Use warm soapy water and a brush Rinse with clean water and dry with a clean cloth Use care when cleaning around sensitive interior parts such as probes sensors or the rotating mechanism Gently scrape heavy buildup off door glass Residue can be removed with a glass cleaner when oven is cool Do not use cleaners containing grit abrasive materials bleach harsh chemicals or chlorinated cleaners Do not use oven cleaners Do not use steel wool or stainless steel cleaners on stainless steel surfaces Stainless steel polish can be used on the exterior of the oven ne
24. me will appear in the display Use the UP and DOWN arrows to adjust the start time Then release the AUTO ON TIME button 2 To set the oven to turn off press and hold the AUTO OFF TIME button The previously entered end time will appear in the display Use the UP and DOWN arrows to adjust the end time Then release the AUTO ON TIME button 3 To enable the automatic start press the TIMER ON OFF button until the indicator LED to the right of the TIMER ON OFF button is illuminated Backup Battery The clock is backed up by a lithium battery which keeps the clock circuitry operating when all external power is off If the battery becomes low or dead while the external power is off the display will read 12 00 12 hr mode or 0 00 24 hr mode and will not increment until a new time is set The clock will operate with a dead or missing battery but must be set each time external power is turned on Batteries should be replaced when low or dead to avoid corrosive damage to the circuitry Oven Preheat For best results the oven must be preheated to bake temperature before baking begins 1 Press the POWER ON OFF button to turn the oven ON 2 Press the UP or DOWN arrows in the TEMP section to enter the desired baking temperature SET TEMP lt HEAT ON 3 Confirm that the doors are closed 4 Allow 50 minutes after the oven has reached the set temperature for the steam system to charge 5 The oven is now ready for bakin
25. n 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 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 In Canada 1 Local codes 2 CAN CGA B149 1 Natural Gas Installation Code latest edition 3 CAN CGA B149 1 National Fuel Gas Code latest edition available from The Canadian Gas Association 178 Rexdale Blvd Etobicoke Ontario Canada M9W 1R3 ASSEMBLV oven must be installed on a stand proofer cabinet or any noncombustible surface The oven must be sealed to the stand proofer cabinet or surface with an NSF approved sealant such as Dow Corning 732 or GE RTV108 Secure the oven to the proofer or stand using the provided tie down brackets which mount on the rear of the oven See Accessories HPC800 Proofing Cabinet for proofer specifications Oven Mounted on a Stand or Proofer with Caster For an appliance equipped with casters instructions that 1 the installation shall be made with a connector that complies with the Standard for Connectors for Movable Gas Appliances ANSI 221 69 or Connectors for Moveable Gas Appliances CAN
26. n is powered 2 lfnot replace lamps Unscrew lamp cover Fig 1 to disengage from lamp sockets Remove lamp from socket 3 Reverse procedure to install new lamps Clean and Vacuum Components and Burner Area 1 Clean the burner chamber Fig 2 area of dust and or lint accumulation A Remove screw securing control panel door and swing door open to access burner chamber area B Vacuum the burner chamber area of dust and or lint accumulation NOTE Individual burners may be inspected for clogs or debris without removing individual burners 2 Check and clean all air passageways A Clean all burner chamber air passageways of dust and or lint accumulation 3 Clean convection panel grill Clean convection panel grill Fig 3 of dust and or lint accumulation 4 Clean draft inducer housing grill guard Fig 4 A Access draft inducer housing on top of oven and clean grill cover of dust and or lint accumulation Fig 2 DRAFT INDUCER GRILL GUARD CONVECTION PANEL GRILL Fig 3 Fig 4 29 Inspect Rack Rotation Assemblies NOTE Before performing rack inspection observe condition of rack rotation belt 1 Check rack rotation belt A Gain access to the top of oven and loosen the screws securing rack rotation assembly cover Fig 5 B Lift cover from top of oven Observe condition of the rack rotation belt If belt is worn or damaged c
27. ndow displays the number of the arrow keys to select current program a bake program Q 0 S v Use to enter bake programs The corresponding indicator light will be lit 1 to 4 depending on which step is selected Press to open or The indicator light next to the VENT button is lit when close the vent the vent cycle is enabled lt m 2 Use to cool down To enable this feature set a temperature at least 25 14 cooler than the oven temperature Press the COOL DOWN button The COOL DOWN mode is exited when the oven reaches the new set temperature or if door is opened when temperature is 25 F 14 C below set temperature or by pressing any button Q 10 Auto ON OFF Timer Setting Clock Auto ON OFF Timer display shows the current time of day To set the clock the control must be turned on Press and hold either of the arrow buttons until the colon between the hours and minutes display stops blinking Use the up and down arrow buttons to adjust time of day After 5 seconds of no use the colon will start to blink again The oven can be set to turn itself on and off After the Auto ON OFF Timer is set the POWER ON OFF button can be pressed to turn the oven off This will not disrupt the AUTO ON OFF setting Electrical power to the oven must remain on 1 To set the oven to turn on press holdthe AUTO ON TIME button The previously entered start ti
28. odule should go into lockout See following chart IGNITION MODULE LED 8731 Fig 10 If the results have been obtained proceed to next preventive maintenance procedure If the results have not been obtained contact your local Hobart Bakery Systems service office 32 2 Verifv operation of draft inducer pressure switch A B C Turn incoming power off to oven Remove screw securing control panel door and swing door open to access burner compartment area Loosen hose clamp Fig 11 and remove vacuum tube from the vacuum switch NOTE Some ovens may have rectangular shaped vacuum switches g Reconnect incoming power to oven and turn Set oven to heat and press START The burners should not come on at this time If the burners do not come on proceed to next preventive maintenance procedure If the burners do come on contact your local Hobart Bakery Systems service office Reverse the procedure to install REMOVE VACUUM TUBE Fig 11 NOTE Use normally open common terminals and low vacuum port for the vacuum switch setup 3 Verify operation of draft inducer stack fan pressure switch A Set oven for heat Disconnect tubing from exhaust vent collar Burner should go out Reconnect tubing and burner should establish a flame If the results have been obtained proceed to next preventive maintenance procedure the results hav
29. ontact your local Hobart Bakery Systems service office D Reverse procedure to install 2 Check rack assembly for proper operation A Put oven into operation with customer s typical bake product load weight on rack If rack does not stop in the proper rack load unload position contact your local Hobart Bakery Systems service office NOTE Some under or over travel of rack positioning should be expected depending on product load Inspect Door Components OVEN TOP VIEW 1 Check and or adjust door gaskets SCREWS jil 6 b A While operating oven if air or steam blows out from the top sides or underneath the doors door gasket will need to be adjusted or replaced B If gasket needs replaced contact your 06 local Hobart Svstems service RACK ROTATION office ASSEMBLY COVER ITSP 1514 1514 2 Check door switch operation Fig 5 A Turn oven on and set a normal bake temperature SHUTTERS Inspect Air Louvers 1 With the oven doors closed press START button and observe rack rotation If no rotation contact your local Hobart Bakery Systems service office Check air louvers shutters Fig 6 inside oven and tighten any loose screws y 3 ae 4 L EN MI 8384 Check oven interior and tighten or replace loose or missing panel screws Fig 6 30 Inspect Cavitv Vent 1 Check cavitv vent for proper operation A Pu
30. re Press the COOL DOWN button the display alternately shows the set temperature and COOL and the vent opens Additionally the doors can be opened and the circulation fan will continue to run The COOL DOWN mode is exited by the oven temperature reaching set temperature 25 F 14 C below set temperature if doors are opened or by pressing any button The oven rack will rotate only after there is time entered into the bake timer and the start button has been pressed Rotation will start when both doors are closed If there is no time entered into the bake timer the display will flash Press STOP and the controller will stop flashing Once started the rack will continue to rotate until a door is opened Circulation fan will stop running if the oven set point is reached and there is no 0 time displayed on the controller 13 FOOD SERVICE STEAM MODE This mode can be used to provide steam on a periodic basis throughout operation When this mode is enabled the STEAM TIMER controls how manv seconds of steam are provided to the oven while a value entered in the Parameter 14 P14 setup controls how frequently the steam is operated To enable the Food Service Steam mode 1 Enter the parameter setup mode See Entering Setup Mode 2 Select Parameter 14 3 If the BAKE TIMER window displays 0 it is set up for Bakery Mode factory default Press the UP or DOWN arrow buttons to enter FSS mode display will change to a 3 digit num
31. sh VENT button Fig 7 on control panel to open vent and push again to close vent Visually check that vent opens Fig 8 and closes Fig 9 when button is pushed If vent does not operate contact your local Hobart Bakery Systems service office 2 VENT OPEN MMLITES W Ba PAAR VENT BUTTON Fig 8 VENT CLOSED Fig 9 Visually Inspect Electrical Connections 1 Remove screw securing control panel door and swing door open to access burner compartment area 2 Inspect all wiring connections for discoloration If discoloration is visible contact your local Hobart Bakery Systems service office AJ Verifv Ignition Module Safetv Lockout Functions 1 Verifv ignition module safetv lockout functions A B C D LED DIAGNOSTIC INDICATOR CODES LED OFF No Fault J K Turn the oven on and close the doors Turn off gas supply to oven Set the oven control to call for heat make sure convection fan is running Remove screw securing control panel door and swing door open to access burner compartment area Observe LED on ignition module After trying to light the burner the module should lockout See following chart Turn gas supply back on to oven Set the oven control to call for heat and make sure convection fan is running and the burner has established a flame Turn the gas supply off to the oven Observe LED on ignition module Fig 10 The m
32. t program number or press the POWER ON OFF button to exit the program mode To store additional program settings repeat steps 2 to 4 6 Record program numbers and product associated with them IB Multi Step Programming Additional programs or steps can be entered within the original program number Up to four individual steps can be added the operator each with different bake settings Forexample Program 1 has temperature bake steam and delav time settings set bv the operator This is known as Step 1 After the timer times out in Step 1 the oven automaticallv starts the programmed bake settings in Step 2 The svstem continues with each step until all steps have been timed out ON POWER 1 With the oven in the OFF mode press and hold the UP arrow in the STEPS section While pressing and holding the UP arrow press the POWER ON OFF button for 3 seconds When the beep sounds the oven is in program mode 2 Press the PROGRAM UP or DOWN arrows until the program number that is desired is displayed The Step 1 light is lit 3 Press the TEMP UP or DOWN arrows to enter the desired temperature CJ MINUTES SET MINUTES REMAINING STEAM TIMER lt ON SECONDS AIRFLOW DELAY 4 Set the Bake Steam Delay Airflow and Vent settings e Press the UP or DOWN arrows next to BAKE TIMER to enter the desired time e Press the UP or DOWN arrows next to STEAM TIMER to enter the desired time e Press the UP arrow next
33. to AIRFLOW DELAY to enter the desired time NOTE The steam and airflow delay settings are optional and can be left at O if desired e Press the VENT button to vent the cavity for the entire time of the step When step is complete vent will close 5 Press the UP arrow in the STEPS section to advance to the next step within the program The selected step light is lit Repeat steps 3 and 4 above to set each step if needed in the program 6 To store all the steps in the program press the PROGRAM UP or DOWN arrows to move to the next program number or press the POWER ON OFF button to exit the program mode 16 Changing the Programs ON POWER 1 With the oven in the OFF mode press and hold the UP arrow in the STEPS section While pressing and holding the UP arrow press the POWER ON button for 3 seconds When the beep sounds the oven is in program mode 2 Press the PROGRAM UP or DOWN arrows until the program number that is desired is displayed BAKE TIMER KONI MINUTES SET MINUTES REMAINING STEAM TIMER 1 SECONDS AIRFLOW a DELAV MINUTES 3 Enter the new Bake Steam and Delav Airflow settings Press the UP or DOWN arrows next to BAKE TIMER to enter the desired time Press the UP or DOWN arrows next to STEAM TIMER to enter the desired time Press the UP arrow next to AIRFLOW DELAY to enter the desired time NOTE The steam and airflow delay settings are optional and can be left at O if desired
34. ty Please consult your local water company and or water condition dealer before installing proofer Connect the cold water supply to the s NPT incoming water connection located at the rear of the proofer Water supply should have a pressure of 30 to 75 psi DRAIN CONNECTIONS Connect a a drain line to the 2 NPT drain connection located atthe rear of the proofer Route the drain line to a floor drain allowing a minimum 1 air gap between the drain line outlet and floor drain Provide a vent opening in the drain line above the oven drain connection location 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 DISCONNECT THE ELECTRICAL POWER TO THE OVEN AND FOLLOW LOCKOUT TAGOUT PROCEDURES WARNING APPLIANCES EQUIPPED WITH A FLEXIBLE ELECTRIC SUPPLY CORD ARE PROVIDED WITH A THREE PRONG GROUNDING PLUG THIS PLUG MUST 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 23 DIMENSIONS AND SERVICE CONNECTION DIAGRAM 34 61 87 9 cm TOP VIEW 80 91 205 5 cm 1 75 48 00 4 4 cm 121 9 cm Service Connection Points Power A Water Oven Drain Proofer Drain 33 00 83 8 cm Electrical Data
35. ur authorized Hobart Bakery Systems service agency for assistance BURNERS WILL NOT LIGHT GAS OVENS ONLY 1 Press the ON OFF button to turn the power OFF and wait 5 minutes 2 Make sure the gas shutoff valve is in the ON position 3 Press the ON OFF button to turn the oven ON If the oven does not light on the second attempt turn the gas shutoff valve to the OFF position and call your authorized Hobart Bakery System service agency SAFETY ALARM STANDARD FEATURE NO PARAMETER SETUP REQUIRED If the temperature at the probe is in range of 570 to 600 F for 10 seconds the unit will do the following 1 Shut off all features 2 Sound an alarm 3 Flash the OVEN TEMP display actual temperature is displayed 4 Display the letters SHdn in the BAKE TIMER display WARNING DISCONNECT THE ELECTRICAL POWER TO THE OVEN AND FOLLOW LOCKOUT TAGOUT PROCEDURES THERE MAY BE MULTIPLE CIRCUITS BE SURE ALL CIRCUITS ARE DISCONNECTED WARNING IF GAS OVEN SHUT OFF GAS CONTACT YOUR AUTHORIZED BAKERY SYSTEMS SERVICE OFFICE DO NOT ATTEMPT TO RESTART THE OVEN UNTILIT HAS BEEN INSPECTED BY AN AUTHORIZED SERVICER CIRCULATION MOTOR To conserve energy if there is no bake time 0 entered the circulation blower will only run when oven is below set point and burner heaters are on RACK ROTATION The rack will not rotate if no time O is set and started Check to make certain that doors are properly closed PARTS AND SERVICE INFORMATION
36. ver on the interior When polishing follow the grain of the stainless steel Never spray down the oven with water or steam Be cautious with new or improved cleaning formulas use only after being well tested To rapidly cool down the oven shut off the controller Open both doors and press the vent button This will run the circulation blower without any heat input until the door is closed E ACCESSORIES HPC800 PROOFING CABINET The HO300 Mini Rotating Rack Oven can be ordered with the optional HPC800 Proofing Cabinet The proofer is mounted on four casters two front swivel and two rear fixed The HPC800 Proofer has a 16 pan capacity that accommodates 18 x 26 45 7 cm x 66 cm baking trays with 3 7 6 cm slide spacing Temperature and humidity can be set independently to meet your particular proofing needs Air is circulated continuously to provide positive movement from bottom to top creating a uniform distribution of warm moist air All HPC800 Proofers have easy to clean stainless steel interior and exterior panels with urethane foam insulation PLUMBING CONNECTIONS WARNING PLUMBING CONNECTIONS MUST COMPLY WITH APPLICABLE SANITARY SAFETY AND PLUMBING CODES The proofer should have its own water supply line separate from the oven The proofer water supply should have a hardness of 4 to 6 grains per gallon pH of 6 5 to 8 0 and chlorides less than 30 PPM Water condition outside of these requirements may void the warran
Download Pdf Manuals
Related Search