Hobart HBA2E User's Manual
Contents
1. 6 HBA Standard Controls 6 HBA Advanced Controls 10 Back Up Control Operation Optional nennen nnn nnns 15 Programming tne NN 16 Customized ian DIEN UFU UO QUSE E E I ANEDE OA 20 Shutdown A 22 Ean Uu T 23 MAINTENANCE ooo 24 EEE EEE 24 Preventive Maintenance rarnnravnnnnvnnnnnnvnnnnnnnnnenennnnennnnnunnnenennrneunnneunnnruenneneunnneunnnenennsneunnnenennennunen 24 Service and Parts Information c ccecececececccececececccccecucecececececeuecececeneueceueceneauauneceauanavaveeaeananas 24 TROUBLESHOOTING B ar al 25 Burners Will Not Light on Gas NN 25 OWNER PREVENTIVE MAINTENANCE PROCEDURE enm mmm 25 Introduction EEE a a L l ad e 25 Preventive Maintenance Procedure cccccecccceccccuceceucuceueceuenecueneaceneaeeneneenentaeeneatsnenesnentass 25 OPERATION AND CARE OF MODEL HBA GAS RACK OVEN SAVE THESE INSTRUCTIONS GENERAL The Hobart HBA Rack Oven accommodates a roll in rack It is equipped with an electronic oven control for baking and or steaming applications A mechanism in the oven ceiling rotates the rack during baking Model HBA1G is rated at 180 000 Btu hr natural or propane gas Model HBAZG is rated at 300 000 Btu hr or 350 0002. 3 Check interior door release Fig 7 for proper Fig 7 operation ROD MUST EASILY SLIDE UP RAMP AS DOOR IS CLOSED 4 Check door switch for proper operation A When door switch actuator rod is in the down position door open the rod should extend 3 8 to 7 16 from the underside of the header and easily slide up ramp as door is closed Fig 8 Slide ramp should be positioned as shown below If not re form ramp as necessary Fig 8 27 Inspect Air Louvers 1 Check air louvers shutters Fig 9 inside oven and tighten anv loose screws 2 Check oven interior tighten or replace loose or missing panel screws Also check floor anchors Inspect Cavitv Vent 1 Check cavitv vent for proper operation A Push vent Fig 10 button on control panel to open vent and then push again to close vent B Visually check that vent opens Fig 11 and closes Fig 12 when button is pressed o EO l tilar E DO MIX l l 1 li B SHUTTERS U 4 Oy V ZU D Fig 10 Fig 11 Fig 12 Visually Inspect Electrical Connections 1 Inspect all wiring connections for discoloration If discoloration visible contact your local Hobart Bakery Systems service 28 Verifv Ignition Module Safetv Lockout Functions Gas Oniv 1 Verifv ignition module safetv lockout functions A Turn main gas supply off to the oven B Open control p
3. Close the loading door The rack carrier will lift and rotate only during timed bake Unloading Procedure 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 DOOR IS OPENED TO AVOID BURNS OPEN THE DOOR SLOWLY AND KEEP CLEAR OF THE OPENING 1 Press STOP or open the loading door to silence the beeper 2 Wait for the rack carrier to stop and lower 3 For B lifts push the rack stop down to unload the rack from the rack carrier For C lifts push rack stop to the right to open 4 Roll the rack from the rack carrier 5 Close the loading door Operational Hints On the initial startup the oven temperature will default to the factory setting of 375 F 191 C unless changed e During a baking cycle the START and STOP buttons control the BAKE and STEAM settings only They have no effect on the oven heat When the BAKE TIMER times out the oven heat stays at the set temperature Care should be taken not to overbake products e To adjust the temperature during a baking cycle press the UP or DOWN arrow in the oven temp section to enter the new temperature e To adjust steam settings press the corresponding arrows to enter the new values The steam timer cannot be adjusted during bake operation e You can adjust the time remaining with the arrows The set time remains unchang
4. 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 Service is your best choice for performing preventive maintenance SERVICE AND PARTS INFORMATION Contact your authorized Hobart Bakery Systems service office 24 TROUBLESHOOTING BURNERS WILL NOT LIGHT ON GAS OVEN 1 Check that door is shut 2 Press the OFF button to turn the oven off and wait 5 minutes 3 Make sure the gas shutoff valve is in the ON position 4 Press the ON button to turn the oven back on If the above suggestions do not remedy the problem contact a Hobart Bakery Systems service office OWNER PREVENTIVE MAINTENANCE PROCEDURE 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 I 9 i
5. A
6. Btu hr natural or propane gas Model HBA1E is rated at 34 2 kW Model HBA2E is rated at 51 3 kW Hobart Rack Ovens are produced with quality workmanship and material Proper installation usage and maintenance of your oven will result in many years of satisfactory performance It is suggested that you thoroughly read this manual and carefully follow the instructions provided INSTALLATION The Hobart HBA Rack Oven must be installed or moved only by authorized Hobart Bakery Systems trained service technicians OPERATION HBA STANDARD CONTROLS HBA CONTROLS STANDARD MINUTES SET MINUTES REMAINING SECONDS Control Guide Standard Button POWER ON OFF SET TEMP el BAKE TIMER STEAM TIMER ej STOP VENT l 3 Action Press to turn the oven ON or OFF Press to set the desired temperature b degree increments Press to enter the BAKE time 1 minute increments Press to enter the STEAM time 5 second increments Press to start the BAKE TIMER Press to stop the BAKE TIMER or silence the beeper after the BAKE TIMER has timed out Press to open or close the vent Display Control panel displays are lit when the oven is on Oven defaults to Program O If oven is turned off and back on within 2 minutes the oven will come up in the last mode and oven setting The SET TEMP window displays the set temperature The ON light is lit while the oven is heating The actual te
7. circulation blower motor Fig 3 and motor cooling fan CLEAN 8367 Fig 3 Fig 2 Rack Lift and Rotation Assemblies 1 Check rack lift assembly for proper operation A Open door Rack lift should lower to correct height of rack and be in forward loading position to accept rack entry B The oven rack should be easily rolled in and out of oven and the wheels completely off the oven floor when raised 2 Tighten all set screws 4 in carrier Fig 4 A Check and tighten all set screws on carrier 4 set screws Fig 4 26 Inspect Door Components 1 Check loading door latch A Check door gasket for good condition If door gasket needs replacement contact vour local Hobart office for service B Check loading door latch Latch must fully extend Fig 5 when door is closed and contacting door gasket Leave about 1 8 gap for heat expansion C Adjust strike in or out as required by loosening one screw Fig 6 on each side of strike gt SED ES TO ADJUST D Tighten screws LATCH FULLY EXTENDED Fig 6 INTERIOR DOOR RELEASE Fig 5 2 Check door sweep A The door sweep should hit the floor approximately 1 8 evenly across door width when door is in the closed position B Turn oven on C If air blows out from underneath the door or steam door will need to be adjusted If door sweep needs replacement or adjustment contact your local Hobart office for service
8. 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 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 A pom Changing the Programs PROGRAM 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 b MINUTES SET MINUTES REMAINING STEAM TIMER lt ON SECONDS AIRFLOW DELAY MINUTES 3 Enter the new Bake Steam and Delay Airflow settings e Press the UP or DOWN arrows next t
9. off automatically after 30 minutes of no user activity door opened or closed no buttons pushed Setup items only accessible on ovens equipped with advanced controls SHUTDOWN NOTE Before restarting a gas oven power switch and gas burner valve must be off for a minimum of 5 minutes 1 Remove all remaining product NOTE Vent can be used to cool the oven 2 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 00 CLEANING WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES WARNING THE RACK OVEN AND ITS PARTS ARE HOT USE CARE WHEN OPERATING SERVICING OR CLEANING THE RACK OVEN WARNING HOT AIR AND STEAM ARE RELEASED FROM THE OVEN INTERIOR WHEN THE LOADING DOOR IS OPENED TO AVOID BURNS OPEN THE DOOR SLOWLY AND KEEP CLEAR OF THE OPENING Allow the oven to cool Clean the outside of the oven daily with a clean damp cloth Remove rack s and clean as you would any cooking utensil Use warm soapy water and a brush Rinse with clear water and dry with a clean cloth Use care when cleaning around sensitive interior parts such as probes sensors or the rotating mechanism Using a clean cloth and warm soapy water wash the stainless steel interior of the oven Rinse with clear water and dry with a clean cloth Gently scrape heavy buildup off door g
10. HBA RACK OVEN WITH ELECTRONIC OVEN CONTROL MODELS HBA1G HBA2G HBA1E HBA2E GAS GAS ELECTRIC ELECTRIC CORPORATION 701 S RIDGE AVENUE TROY OHIO 45374 0001 937 332 3000 www hobartcorp com FORM 34757 Rev A Nov 2003 IMPORTANT FOR VOUR SAFETV GAS OVENS 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 ALL OVENS 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 HOBART CORPORATION 2003 MODEL HBA RACK OVEN TABLE OF CONTENTS GENERAL 5 INSTALLATION 5 OPERATION m
11. NUTES SET MINUTES REMAINING STEAM TIMER lt SECONDS AIRFLOW DELAY 10 Control Guide Advanced POWER Press to turn the oven Control panel displavs are lit when the oven is on Oven ON or OFF defaults to Program O If oven is turned off and back on OFF 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 to set the desired The AUTO ON OFF TIMER window displays the time time of oven to the oven will automatically turn on automatically turn ON Press to set the desired The AUTO ON OFF TIMER window displays the time time of oven to the oven will automatically turn off automatically turn OFF Press to turn the automatic The indicator light beside the timer ON OFF button is timer ON or OFF lit when the function is enabled Press to set the desired The SET TEMP window displays the set temperature temperature The HEAT ON light is lit while the oven is heating The 5 degree increments actual temperature in the oven cavity is displayed in the OVEN TEMP window Press to enter The BAKE TIMER window displays the amount of time the BAKE time for the current baking cycle The minutes set are the 1 minute
12. VEN 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 DOOR IS OPENED TO AVOID BURNS OPEN THE DOOR SLOWLY AND KEEP CLEAR OF THE OPENING 1 Preheat the oven See Oven Preheat for HBA Standard Controls 2 Manually select baking settings L S G MINUTES SET MINUTES REMAINING STEAM TIMER c ON SECONDS e Press the UP or DOWN arrows next to BAKE TIMER to enter the desired time Timer runs independently from other functions NOTE Steam setting is optional and can be left at O if desired e f steam is desired press the UP or DOWN arrows next to STEAM TIMER to enter the desired time in increments of 5 seconds 3 Slowly open the door and load product 4 Close the door and press the START button The ON light in the BAKE TIMER window blinks as the timer counts down 5 Rack lifts from floor and rotates clockwise 6 The oven beeps after the BAKE TIMER times out Press STOP to silence the beeper 7 Open door Allow rack carrier to stop and lower Remove product 8 Loading Procedure 1 The rack carrier is equipped with a stop on both ends For B lifts ensure stop flap is in the up position to load the rack on the rack carrier For C lifts push rack stop to the left after rack is loaded 2 Roll the rack into the oven so the end brackets channel onto the rack carrier 3
13. WER SECONDS AIRFLOW DELAY 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 LOCIS a TIMER SON MINUTES SET MINUTES REMAINING STEAM TIMER lt ON SECONDS AIRFLOW DELAY C ON MINUTES 2 To make a change in the setup item being displaved 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 office for help with these features 3 To exit the setup mode press the POWER ON OFF button 20 Setup Guide Setup Number Displav 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 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 Minimum Temperature This is the minimum temperature at which the oven can be Setpoint set Range is 50 F to 200 F 10 C to 93 Temperature Offset This value permits an offset of correction between the temperature probe and the real bak
14. anel door to gain access to burner compartment area GN OBSERVE LED Pl I 77 THRU HOLE C Turn the oven on I IN CONTROL AN Box cover D Set the oven to call for heat make sure convection fan is running E Observe LED light through hole in control box cover Fig 13 after trying to light the burner three times the module should lockout See chart below F Turn main gas supply back on to the oven G Set the oven to call for heat making sure convection fan is running and the burner has established a flame H Turn main gas supply off to the oven Fig 13 Observe LED light through hole in control box cover Fig 13 the ignition module should go into lockout See chart below LED DIAGNOSTIC INDICATOR CODES J If the results have been obtained proceed to step 2 K If the results have not been obtained contact your local Hobart Systems Service office DISCONNECT 2 Verify hood exhaust air pressure switch Fig 14 HOOD JE ani TUBING operation E E LI 28 TAR A Setovencontrolto callfor heat make sure convection PRESSURE DN fan is running a B Disconnect tubing from exhaust vent collar burner flame should go out 5532 C Reconnect tubing and burner should establish a Fig 14 flame If not contact your local Hobart Bakery Systems service office 29 3 Verifv draft inducer pressure switch Fig 15 operation A Set oven control to call for hea
15. 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 Tosetthe oventoturn on press and holdthe AUTO ON TIME button The previously entered start time 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 and hold 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 Contact your local Hobart Bakery Systems service office 12 Oven Preheat For best results the oven must be preheated to bake temperature before baking begins 1 The door must be closed for oven to heat The rack carrier wi
16. d by pressing and holding the steam rocker switch up to a maximum of 20 seconds More than this will cool down the oven and steamer excessively Venting the oven must be done manually by opening the door The rack carrier will stop and lower when door is open Close door after venting is complete for rack carrier to lift and resume rotating 5 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 LW MINUTES SET MINUTES REMAINING STEAM TIMER lt 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 to AIRFLOW DELAY to enter the desired time NOTE Steam and airflow delay settings are optional and can be
17. ed unless you 0 out the remaining time e If the door is opened at any time during the baking cycle the TEMP BAKE TIME and STEAM functions will pause Close the door to resume all functions e The vent control can provide a means of cooling down the oven When the oven is in the OFF mode and the door is open press the VENT button once to start or stop the circulation fan The fan will also stop when the door is closed or when the oven is put into the ON mode e he oven monitors the heating system by comparing the current oven temperature to the set temperature If a problem arises in the heating system or if there is a heating system failure both temperature displays will flash If the problem continues contact your authorized Hobart Bakery Systems service office e To cool the oven more than 20 degrees below its current temperature change the SET TEMP to the desired new temperature open the oven door and press the VENT button The SET TEMP display will alternate between COOL and the SET TEMP until the oven has cooled When the oven has reached the set temperature the alarm will beep and the control will return to normal operation Closing the oven door or pressing any control button during Cool Down mode will also return the control to normal operation HBA ADVANCED CONTROLS HBA CONTROLS ADVANCED ON POWER AUTO nnn ON OFF OPM TIMER AUTO AUTO TIMER ON OFF ON TIME TIME OFF OVEN TEMP SET TEMP SONI MI
18. ese settings are not saved to the program memory If any of the baking parameters are changed in a program before or during a bake cycle the oven reverts to a manual program Program 0 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 19 CUSTOMIZED OPERATION The HBA oven standard and advanced 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 office 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 the SET TEMP window TIMER CJ L E ud TIMER SON MINUTES SET MINUTES REMAINING TIMER lt ON PO
19. ged e 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 temperature Care should be taken not to overbake products e To adjust the temperature during a baking cycle press the UP or DOWN arrows in the Oven Temp section to enter the new temperature e To adjust steam settings press the corresponding arrows to enter the new values The steam timer cannot be adjusted during bake operation e You can adjust the time remaining with the arrows The set time remains unchanged unless you 0 out the remaining time fthe door is opened at any time during the baking cycle the TEMP BAKE TIME STEAM and AIRFLOW DELAY settings will pause Close the door to resume all functions e The AIRFLOW DELAY option minimizes airflow at the beginning of the baking cycle The heat is off while the AIRFLOW DELAY is activated e The VENT control can provide a means of cooling down the oven When the oven is in the OFF mode and the door is open press the VENT button once to start or stop the circulation fan Vent light will be lit The fan will also stop when the door is closed or the oven is putinto the ON mode Additionally if the oven temperature is more than 20 degrees higher than the set temperature and the bake timer is not activated the oven will automatically open the VENT The VENT will remai
20. i 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 qualified service for any needed repairs Tools Used For Inspection Procedure e Standard set of hand tools e Vacuum cleaner shop vac PREVENTIVE MAINTENANCE PROCEDURE WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE 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 Inspect Oven Lamps 1 Lamps should be on when oven is powered 2 If not replace lamps Fig 1 A Remove lens cover by turning out of lamp housing B Remove oven lamp by turning lamp out of lamp socket 3 Reverse the procedure to install new lamps Fig 1 m Clean and Vacuum Components and Control Burner Compartment Area Gas Oniv 1 Clean the control burner compartment Fig 2 area of dust and or lint accumulation 2 Vacuum the control burner compartment floor of dust and or lint accumulation 3 Gain access to the top of oven and clean dust that may have accumulated on top of
21. increments left two digits and minutes remaining are the right two digits The windows can be set to display hours and minutes remaining The ON light is lit when bake time is active See Customized Operation to configure this setting STEAM TIMER Press to enter the The STEAM TIMER window displays the amount of STEAM time time set for the steam cycle The ON light is lit when g 5 second increments the steam svstem is active AIRFLOW Press to enter the The DELAV TIMER window displavs the amount of DELAV DELAY time time set for the circulation blower delay cycle A 1 minute increments Press to start the The ON light blinks when the BAKE TIMER is active BAKE TIMER i Control Guide Advanced 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 Press to select bake The PROGRAM window displays the number of the program current program Press to select one of The corresponding indicator light will be lit 1 to 4 four baking steps depending on which step is selected Press to open or The indicator light above the VENT button is lit when the close the vent vent cycle is enabled Auto On Off Timer Timer Settings The Auto ON OFF Timer display shows the current time of day To adjusttime press the arrow buttons The oven can be set to turn itself on and off After the Auto ON OFF Timer is set the POWER ON OFF button
22. ing chamber temperature Call your authorized Hobart 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 Hobart 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 Hobart Bakery Systems service agency for help with this feature 7 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 Hobart 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 01 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 Vent Open Percentage This value is the percentage the bake chamber vent is open after the
23. lass Residue can be removed with a glass cleaner when oven is cool Clean hood filters if equipped with soap and warm water Do not use oven cleaners or steel wool on stainless steel surfaces Never spray down the oven with water or steam Never use cleaners that contain chlorine Chlorine corrodes stainless steel mole MAINTENANCE WARNING THE RACK OVEN AND ITS PARTS ARE HOT USE CARE WHEN OPERATING SERVICING OR CLEANING THE OVEN WARNING HOT AIR AND STEAM ARE RELEASED FROM THE OVEN INTERIOR WHEN THE LOADING DOOR IS OPENED TO AVOID BURNS OPEN THE DOOR SLOWLY AND KEEP CLEAR OF THE OPENING WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT TAGOUT PROCEDURES On gas ovens annually check the flue to be sure it is free of obstructions GENERAL As Needed e Inspect the area 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 e Clean the oven interior and remove loose debris See Cleaning e Clean the windows e Empty grease catcher if equipped Monthly e Clean exhaust hood filters if equipped with soap and water Bi Monthly e Owner Preventive Maintenance Procedure PREVENTIVE MAINTENANCE The HBA 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
24. left at 0 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 next 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 on the bake card supplied with the oven 16 Multi Step Programming Additional programs or steps can be entered within the original program number Up to four individual steps can be added by the operator each with different bake settings For example Program 1 has temperature bake steam and delay time settings set by the operator This is known as Step 1 After the timer times out in Step 1 the oven automatically starts the programmed bake settings in Step 2 The system continues with each step until all steps have been timed out PROGRAM 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 EBEN MINUTES SET MINUTES REMAINING STEAM TIMER
25. ll lift and rotate only during timed bake NOTE The rack carrier will be in the unload position from the last bake 2 Press the POWER ON OFF button to turn the oven on ON POWER EA 3 Press the UP or DOWN arrows next to the SET TEMP window to enter the desired baking temperature Actual temperature of the oven will appear in the OVEN TEMP window SET TEMP lt HEAT ON 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 baking 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 DOOR IS OPENED TO AVOID BURNS OPEN THE DOOR SLOWLY AND KEEP CLEAR OF THE OPENING 1 Preheat the oven See Oven Preheat for HBA Advanced Controls 2 Manually select baking settings DCL TIMER KONI MINUTES SET MINUTES REMAINING STEAM TIMER lt ON SECONDS AIRFLOW DELAY MINUTES e 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 door and load product 4 Close the door and p
26. mperature in the oven cavity is displayed in the OVEN TEMP window The BAKE TIMER window displays the amount of time for the current baking cycle The minutes set are the left two digits and minutes remaining are the right two digits The windows can be set to display hours and minutes remaining The ON light is lit when bake time is active See Customized Operation to configure this setting The STEAM TIMER window displays the amount of time set for the steam cycle The ON light is lit when the steam enters the back chamber The ON light blinks when the BAKE TIMER is active The ON light is off when the BAKE TIMER is inactive The indicator light above the VENT button is lit when the vent cycle is enabled Oven Preheat For best results the oven must be preheated to bake temperature before baking begins 1 The door must be closed for oven to heat The rack carrier will lift and rotate only during timed bake NOTE The rack carrier will be in the unload position from the last bake 2 Press the POWER ON OFF button to turn the oven on ON POWER 3 Press the UP or DOWN arrows next to the SET TEMP window to enter the desired baking temperature Actual temperature of the oven will appear in the OVEN TEMP window SET TEMP lt HEAT ON 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 baking operations Basic Operation WARNING THE O
27. n open until the oven temperature is within 20 degrees of the set temperature 14 e 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 Hobart Bakery Systems service agency e cool the oven more than 20 degrees below its current temperature change SET TEMP to the desired new temperature open the oven door and press VENT The SET TEMP display will alternate between COOL and the SET TEMP until the oven has cooled When the oven has reached the set temperature the alarm will beep and the control will return to normal operation Closing the oven door or pressing any control button during Cool Down mode will also return the control to normal operation BACK UP CONTROL OPERATION OPTIONAL If the main control panel ceases to function properly baking can continue with the use of the Back up Controls if equipped The Back up Controls are located behind the control door on rear wall of the component panel To activate the Back up Controls flip the toggle switch to BACK UP position Temperature and steam are now controlled by the thermostat dial and steam rocker switches located on the back up control panel Set the thermostat dial to the desired temperature Once the oven has reached temperature steam can be injecte
28. o 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 The steam and airflow delay settings are optional and can be left at O if desired 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 18 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 STEPS o O 3 o 22 AIRFLOW DELAY 2 Confirm that the oven is at the set baking temperature 3 Slowly open the doors Wait for the rack lifting device to come to a stop 4 Roll the rack into the oven so the end brackets channel onto the rack lifting carrier See Loading Procedure 5 Close and latch the door Press START A beeper will sound after the BAKE TIMER times out Press STOP to silence the beeper 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 O Delay Timer 0 Program O Any combination of bake settings can be manually entered for one time custom baking operations Th
29. ress the START button The ON light in the BAKE TIMER window blinks as the timer counts down 5 Rack lifts from floor and rotates clockwise 6 The oven beeps after the BAKE TIMER times out Press STOP to silence the beeper 7 Open door Allow rack carrier to stop and lower Remove product Loading Procedure 1 The rack carrier is equipped with a stop on both ends For B lifts ensure stop flap is in the up position to load the rack on the rack carrier For C lifts push rack stop to the left after rack is loaded 2 Roll the rack into the oven so the end brackets channel onto the rack carrier 3 Close the loading door The rack carrier will lift and rotate only during timed bake Unloading Procedure 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 DOOR IS OPENED TO AVOID BURNS OPEN THE DOOR SLOWLY AND KEEP CLEAR OF THE OPENING 1 Press STOP or open the loading door to silence the beeper 2 Wait for the rack carrier to stop and lower 3 For B lifts push the rack stop down to unload the rack from the rack carrier For C lifts push rack stop to the right to open 4 Roll the rack from the rack carrier 5 Close the loading door Operational Hints e On the initial startup the oven temperature will default to the factory setting of 375 F 191 C unless chan
30. t make sure convection fan is running B Disconnecttubing from draft inducer pressure switch Fig 15 burnerflame should go out C Reconnect tubing and burner should establish a flame If not contact your local Hobart Bakery Systems service office DISCONNECT DRAFT INDUCER TUBING PRESSURE SWITCH n is S Fig 15 Verify Operation of Steam 1 Check steam system for proper operation A Turn the water supply on Turn oven on and set to normal bake temperature Allow to cycle three times to stabilize temperature Set control to call for steam m U Observe operation If steam is not observed contact your local Hobart Bakery Systems service office After completion of the owner PM procedure you will need to contact a qualified servicer for any needed repairs Keep a copy of the Owner Preventive Maintenance Checklist for your records 30 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 Verify operation of steam Mc NN BN eee UA oo 4 PROCESS COMPLETED PM Frequency Bi monthly Type of Gas Natural Gas ___ Location Store No Inspector Date Completed Service Notified for Necessarv Repairs Comments Inspector Signature NOTES FORM 34757 Rev A Nov 2003 32 PRINTED IN U S
31. vent evacuate time has expired Range is 5 to 100 P12 End of Bake Automatic This feature enables the Automatic Vent Cycle Select 0 to Vent Enable enable or 1 to disable this feature see P13 for entering time P13 End of Bake Automaitc This is the number of minutes before the end of the bake Vent Time cycle that the vent is open Setup items only accessible on ovens equipped with advanced controls 921 Setup Guide cont Setup Number Displav P14 Steam Timer Mode The STEAM TIMER can be set up to display in seconds or operate in food service mode Select 0 for seconds or 1 for food service mode P15 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 P16 Clock Operation This selects either 12 hours AM PM or 24 hours real time display Press the Bake Time Up button to switch between the two types of display P17 Temperature Setback Time This selects the elapsed time from the last timed bake to when the oven will lower the oven set temperature to the value set in P18 Range is 10 to 180 minutes P18 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 P19 Lights Mode Select 1 for lights on continuously when oven is on or select O for automatic operation Lights will turn
Download Pdf Manuals
Related Search