Hobart HO851G manual

O P E R A T I O N FORM 34706 Rev . B (July 2009) 701 S. RIDGE AVENUE TROY , OHIO 45374-0001 937-332-3000 www .hobartcorp.com HO851G REVOL VING TRA Y OVEN MODEL HO851G GAS ML-132160 24 Pan ML-132161 18 Pan ML-132258 36 Pan ML-132259 30 Pan[...]

– 2 – IMPORT ANT FOR YOUR SAFETY THIS MANUAL HAS BEEN PREP ARED FOR PERSONNEL QUALIFIED TO INST ALL GAS EQUIPMENT , WHO SHOULD PERFORM THE INITIAL FIELD ST ART -UP AND ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL. POST IN A PROMINENT LOCA TION THE INSTRUCTIONS TO BE FOLLOWED IN THE EVENT THE SMELL OF GAS IS DETECTED. THIS INFORMA TION CA[...]

– 3 – T able of Contents GENERAL ....................................................................................................................... ...................... 4 INST ALLA TION .................................................................................................................. ................... 4 OPERA TION .....[...]

– 4 – OPERA TION AND CARE OF MODEL HO851G REVOL VING TRA Y OVEN SA VE THESE INSTRUCTIONS GENERAL The Hobart HO851G Revolving T ray Oven has been carefully engineered and tested to deliver an excellent baking environment for a wide variety of products. It is equipped with easy-to-understand digital controls and a large, easy-to-read tray indicat[...]

– 5 – GENERAL OVEN DESCRIPTION (Fig. 1) PL-56261 Panel Stop Clip V entilation Hood Emergency Stop Panel Gas Shut Off V alve Loading Door Sill Service Door Interlock Service Door AUTO Button RUN Button REVERSE Button Loading Door Motor Shaft Power Switch Digital Control Panel Quick-View Panel Manual-Auto Switch Lower Front Panel Fig. 1 DIGIT AL [...]

– 6 – REVERSE BUTTON - Press to move trays in a downward direction. The next tray will stop when it is even with the loading door sill. RUN BUTTON - Press to start the trays moving in a continuous upward direction. AUTO BUTT ON - Press to stop the trays. The next tray will stop when it is even with the loading door sill. Use the Auto button for[...]

– 7 – HO851G DIGIT AL CONTROL P ANEL WITHOUT AUTO ST ART TRA Y NUMBER window - Displays the tray that is currently at the loading door sill. OVEN TEMP . UP and DOWN arrows - Press to set the desired temperature. T emperature window - Displays the current temperature and set temperature if arrow key is pressed. TIMER STOP/ST ART - Press to stop [...]

– 8 – TRA Y NUMBER window - Displays the tray that is currently at the loading door sill. OVEN TEMP . UP and DOWN arrows - Press to set the desired temperature. T emperature window - Displays the current temperature and set temperature if arrow key is pressed. TIMERS STOP/ST ART - Press to stop or start the selected timer . RIGHT arrow - Press [...]

– 9 – ST ART UP PREHEA T The oven and its parts are hot. T o prevent burns, use hot pads or protective mitts when loading or unloading the oven. For the best results, the oven must be preheated before baking begins. 1. Ensure all panels are in place and all personnel are clear of oven before preheating/starting oven. 2. T urn the POWER switch t[...]

– 10 – 4. Continue this same procedure until all the product has been loaded. 5. When the loading door is closed, a buzzer will sound. 6. Press RUN to silence the buzzer and start the trays rotating throughout the entire bake process. Unloading 1. Open the loading door . 2. Press the AUTO button to bring the desired tray to the loading door sil[...]

– 1 1 – Multiple Timers Ovens equipped with Auto Start have six individual timers that can be used for timing operations. T imers run independently and will not start or stop an operation. 1. Press the single RIGHT arrow key next to the top window in the TIMERS section to select one of six timers. The T imer Number will be displayed in the top [...]

– 12 – CLOCK Displays the current time and day of the week. It is also used as a 7-day , single-event programmable timer for the Auto Start cycles. See below . Set the Current Time and Day Hour • Press and hold the UP or DOWN arrows next to the Hours and Minutes window . First, the minutes will begin to change; then after a few seconds, the m[...]

– 13 – Auto Start Hints • Do not use the Auto Start feature when the manual tray operation is engaged or if the ventilation motor is controlled by an external source. • The oven will not Auto Start if the loading door is open. • T o turn the Auto Start feature off, press the ON/OFF key under AUTO ST ART section. • The Auto Start feature[...]

– 14 – Changing Items in Setup Mode The number in the TIMERS section Hour and Minutes window is the Setup Number . The other windows display the setup item(s) (the settings that can be changed). Depending on what setup number is being displayed will determine what windows are lit. 1. T o change the setup number displayed in the Hour and Minutes[...]

– 15 – Setup Guide Items designated with a * are for ovens with Auto Start. Setup Numbers Setup Item 0 Displays program version number in T emperature window and oven type number in Hour and Minutes window . 1 The oven can be set to display the temperature in Celsius or Fahrenheit. 2 This is the minimum temperature that the oven can be set. 3 T[...]

– 16 – CLEANING The oven and its parts are hot. Use care when operating, servicing or cleaning the rack oven. • Allow the oven to cool. • Clean the outside of the oven daily with a clean, damp cloth. MAINTENANCE The oven and its parts are hot. Use care when operating, servicing or cleaning the oven. Disconnect the electrical power to the ma[...]

– 17 – Recommended Lubrication Dow Corning C-40 High T emperature Chain Lubricant • Hobart Part No. 01-10G108-00001 (4 oz) • Hobart Part No. 01-10G108-00002 (1 qt.) Lubrication Frequency Based on Usage Duty Cycle Lubrication Frequency Monthly Every 3 Months Light Duty 56 hours per week (8 hours per day , 7 days per week) X Medium Duty 57 to[...]

– 18 – TROUBLESHOOTING The Quick-View oven status display (Fig. 2) on the control panel shows the status for the various systems of the oven. The Quick-V iew Status Lights (Fig. 3) explains what each light means. Some problems can be corrected by the user . If the corrective action does not solve the problem, contact your authorized Hobart Bake[...]

– 19 – Quick View Status Lights Light Number Normal Operation Problem Probable Cause Corrective Action 1 Light is on. Light is off. Service door is open. Close service door . 2 Light is on. Light is off. Inadequate hood air fl ow . Call service. 3 Light is on. Light is off. T emperature limit of oven has been exceeded. Cool oven down. 4 Light [...]

– 20 – FORM 34706 Rev . B (July 2009) PRINTED IN U.S.A. EMERGENCY TRA Y OPERA TION The emergency tray operation procedures are used only if the trays will not operate by normal pushbutton operation and tray movement is required to unload the product. Electrical T ray Operation If there is a component or electrical part failure in Auto Mode, thi[...]