Hobart ML-132177 - Manuals

– 5 – LOCATION The HO300G and HO300E Mini Rotating Rack Ovens must have the following minimum clearancesto combustibles: • Back and sides: 0" • Bottom: 0" • Top: 18" (45.7 cm) Be sure that electrical, water and drain connections are accessible and can be made per local andnational codes....

– 6 – ASSEMBLY The oven must be installed on a stand, proofer cabinet, or any noncombustible surface. The oven must be sealed to the stand proofer surface with an NSF-approved sealant, such as DowCorning 732 or GE RTV108. Secure the oven to the proofer or stand using the provided tie-down brackets, ...

– 8 – VENTILATION Ventilation requirements will vary with each installation and must comply with applicable portions of theNational Fire Protection Association Standard #96 and with local codes. Exhaust Fan Interlock A connection point (maximum 5-amps) is provided for Indirect Vent (Exhaust Hood) or...

– 9 – PLUMBING CONNECTIONS WARNING: PLUMBING CONNECTIONS MUST COMPLY WITH APPLICABLE SANITARY, SAFETYAND PLUMBING CODES. Oven water supply should have a hardness of 4 to 6 grains per gallon, pH of 6.5 to 8.0 and chloridesless than 30 PPM. Water condition outside of these requirements may void the wa...

– 11 – Control Circuit Connection (All Models) 1. Remove the side service panel on the right side of the oven. 2. Route the single-phase supply wires through the knockout provided in the rear of the oven to the control circuit terminal block. (See data plate for circuit amp requirements.) 3. Connect...

– 13 – 16. Turn the power switch OFF and allow the oven to cool. The oven has been set at the factory to bake assorted products, such as breads, rolls, cookies andmuffins. If the bake is uneven, or if there is a specialty operation, the shutters may need to be adjustedto achieve the desired results....

– 15 – Rack Adjustment Rack adjustments should be made with a typical bake product load on it. Depending on the bakeproduct load, some undertravel or overtravel of the rack position is normal. The components are locatedon top of the oven (Fig. 6). 1. Position the rack so it is square with the oven d...

– 16 – OPERATION WARNING: THE RACK OVEN AND ITS PARTS ARE HOT. USE CARE WHEN OPERATING,SERVICING OR CLEANING THE OVEN. ADVANCED CONTROLS

– 17 – Control Guide - Advanced Button Action Display POWER Press to turn the oven Control panel displays are lit when the oven is on. Oven ON or OFF. defaults to Program 0. If oven is turned OFF and backON within 2 minutes, the oven will come up in the lastmode and oven setting. AUTO ON/OFF Press t...

– 18 – Control Guide - Advanced (cont) Button Action Display Press to stop the BAKE The ON light is off when the BAKE TIMER is inactive. TIMER or silence thebeeper after the BAKETIMER has timed out. PROGRAM Press the The PROGRAM window displays the number of the arrow keys to select current program....

– 19 – 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. 3. Confirm that the doors are closed. 4. Allow ...

– 20 – Operational Hints • On the initial startup, the oven temperature will default to the factory setting of 375°F (191°C)unless changed. • During a baking cycle, the START and STOP buttons control the BAKE, STEAM and AIRFLOWDELAY settings only. They have no effect on the oven heat. When the BAKE ...

– 21 – 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. 2. Confirm that the oven is at the set baking temperature. 3. Slowly open the doors. Wait for the rack to come to a stop. 4. L...

– 22 – SHUTDOWN NOTE: Before restarting a gas oven, power switch and gas burner valve must be off for a minimum of5 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...

– 23 – ACCESSORIES - HPC800 PROOFING CABINET The HO300 Mini Rotating Rack Oven can be ordered with the optional HPC800 Proofing Cabinet. Theproofer 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 ...

– 26 – MAINTENANCE WARNING: THE RACK OVEN AND ITS PARTS ARE HOT. USE CARE WHEN OPERATING,SERVICING OR CLEANING THE OVEN. WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOWLOCKOUT / TAGOUT PROCEDURES. G E N E R A L As Needed • Inspect the area around the oven. The area must be free an...

– 27 – 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. Contactyour authorized Hobart Bakery Systems service agency for assistance. BURNERS W...

– 30 – Inspect Cavity Vent 1. Check cavity vent for proper operation. A. Push VENT button (Fig. 14) on control panel to open vent and push again to close vent. B. Visually check that vent opens (Fig. 15) and closes (Fig. 16) when button is pushed. If vent does not operate, contact your local Hobart ...

– 31 – Verify Ignition Module Safety Lockout Functions 1. Verify ignition module safety lockout functions. A. Turn the oven on and close the doors. B. Turn off gas supply to oven. C. Set the oven control to call for heat, make sure convection fan is running. D. Remove screw securing control panel do...

– 32 – 2. Verify operation of combustion blower pressure switch. A. Turn incoming power off to oven. B. Remove screw securing control panel door and swing door open to access burner compartment area. C. Disconnect vacuum switch lead wires (Fig. 18). D. Loosen hose clamp (Fig. 18) and remove vacuum t...

– 33 – Verify Operation of Steam 1. Check steam system for proper operation. A. Turn the water supply on. B. Turn the oven on and set to normal bake temperature. C. Allow to cycle three times to stabilize temperature. D. Set control to call for steam. E. Observe operation. If steam is not observed, ...